Abrégé

In the present invention, a data storage unit stores a manufacturing condition for a product, a setting condition for facility equipment, and, as actual results data acquired from measurement equipment, time-series data for the time of manufacturing. A quality abnormality factor estimation calculation unit acquires a quality abnormality site of an abnormal product of which a quality evaluation value calculated from quality data exceeds an allowable range. The quality abnormality factor estimation calculation unit constructs a quality abnormality factor estimation model on the basis of the time series data as relates to a normal product group or on the basis of the manufacturing condition and setting condition, estimates a factor candidate for a quality abnormality on the basis of the constructed quality abnormality factor estimation model, and calculates the degree of relevance of the estimated factor candidate to the quality abnormality. A display information generation unit generates information for displaying, on a display unit, the quality data of the abnormal product, the quality abnormality site, the time series data or the manufacturing condition and setting condition, and the factor candidate and degree of relevance estimated and calculated by the quality abnormality factor estimation calculation unit.

Classes IPC  ?

• B21B 38/00 - Procédés ou dispositifs de mesure spécialement adaptés aux laminoirs, p.ex. détection de la position, inspection du produit
• B21C 51/00 - Dispositifs de mesure, de calibrage, d'indication, de comptage ou de marquage, spécialement conçus pour être utilisés dans la production ou la manipulation des matériaux concernés par les sous-classes

Abrégé

In the present invention, a first power converter (7) selectively executes a charging operation in which a portion of first AC power from a power system (200) is converted into DC power and stored in a power storage device (130), and a discharge operation in which the DC power in the power storage device (130) is converted into second AC power. A control device (23) is communicatively connected to a server (210) that balances the power supply and demand in the power system (200). When the power system (200) is sound, the control device (23) controls the charging operation so that the power storage device (130) is in a fully charged state. If an advance notice signal of a demand response is received from the server (210), the control device (23) controls the discharge operation so as to supply the total power of the first AC power and the second AC power to a load, and stops the discharge operation in response to the SOC of the power storage device (130) having declined to a standby SOC. The control device (23) controls the discharge operation or the charging operation in accordance with a demand response command received from the server (210).

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A first communication line transmits a control signal from an I/F circuit to an n-th drive circuit. A second communication line transmits a state detection signal of semiconductor switches from the n-th drive circuit to the I/F circuit. An i-th drive circuit includes a driver for an i-th semiconductor switch, an abnormality detection circuit for detecting an abnormality of the i-th semiconductor switch, and first and second notification members. The abnormality detection circuit detects the abnormality of the i-th semiconductor switch and an operation state of the i-th semiconductor switch, and notifies a detection result using the first notification member. The abnormality detection circuit generates the state detection signal indicating an operation state of the i-th to n-th semiconductor switches, detects a mismatch between the control signal and the operation state of the i-th to n-th semiconductor switches, and notifies a detection result using the second notification member.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02H 3/05 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion - Détails avec des moyens pour accroître la fiabilité, p.ex. dispositifs redondants
• H02H 7/12 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour redresseurs pour convertisseurs ou redresseurs statiques
• H02M 1/092 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques pour la commande simultanée de dispositifs à semi-conducteurs connectés en série ou en parallèle les signaux de commande étant transmis optiquement
• H02M 7/797 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

In the present invention, a SCADA web HMI client apparatus comprises a plurality of PLCs, a plurality of HMI client devices, and a SCADA device. A SCADA server device comprises a communication driver and a client management unit connected to the plurality of HMI client devices. The client management unit transmits, to the communication driver, in-use screen information indicating a screen currently used by an HMI client device. For each screen displayed by the HMI client device, the communication driver: acquires a screen-specific device list in which parts and PLC numbers and memory addresses for storing signal data corresponding to the parts are respectively determined; selects signal data determined in the screen-specific device list corresponding to the currently used screen indicated by the in-use screen information; further adds a screen identifier to the selected signal data; and transmits the resulting data to the client management unit for each data type.

Classes IPC  ?

• G05B 23/02 - Test ou contrôle électrique

Abrégé

In an electrode unit of an active gas generation apparatus according to the present disclosure, a dielectric film support member includes a support surface supporting a high voltage side dielectric film from a lower side. A lower surface of the dielectric film suppression member provided on an upper side of a ground side dielectric film includes a dielectric contact region overlapped with a peripheral region of the high voltage side dielectric film and the support surface of the dielectric film support member in a plan view and a dielectric non-contact region overlapped with an intermediate region of the high voltage side dielectric film in a plan view. The high voltage side dielectric film is suppressed from the dielectric contact region on an upper side by the dielectric film suppression member receiving suppress strength of a plurality of suppression auxiliary members.

Classes IPC  ?

• H05H 1/24 - Production du plasma

Abrégé

This voltage control device is provided with: an inverter that converts DC power output from a battery into AC power and supplies the AC power to a power system; and a control device that is connected to the inverter. The control device executes: a process of calculating a first virtual impedance by using various variables when a voltage drop of an output voltage of the inverter is equal to or greater than a threshold value due to a fluctuation in an AC voltage of the power system; a process of calculating a second virtual impedance to be temporarily added to the first virtual impedance so that an output current of the inverter is not greater than a rated value; a process of calculating a virtual effective voltage and a virtual reactive voltage by multiplying each of an effective current and a reactive current calculated by the output current of the inverter by a virtual impedance obtained by adding the first virtual impedance and the second virtual impedance; and a process of performing a voltage control so that the effective current and the reactive current respectively approach an effective current command value and a reactive current command value required for the power system on the basis of the virtual effective voltage and the virtual reactive voltage.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

This voltage control apparatus is provided with: an inverter that converts DC power outputted from a battery into AC power and that supplies the AC power to a power system; and a control device that is connected to the inverter. The control device, when a voltage drop of the output voltage of the inverter is equal to or higher than a threshold due to fluctuation of the AC voltage of the power system, executes: a process for calculating a virtual impedance by using a variable including an active voltage command value and a reactive voltage command value calculated by a voltage command value, and an active current command value and a reactive current command value calculated by the output voltage of the inverter and the voltage command value; a process for calculating a virtual active voltage and a virtual reactive voltage by multiplying, by the virtual impedance, each of the active current and the reactive current calculated by the output current of the inverter; and a process for controlling the voltage so that the active current and the reactive current respectively approach the active current command value and the reactive current command value required for the power system, on the basis of the virtual active voltage and the virtual reactive voltage.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux

Abrégé

In an active gas generation apparatus according to the present disclosure, a first number of high voltage electrode structures are held in a holding space in corresponding grooves in the first number of grooves, respectively, and the second number of ground electrode structures are held in the holding space in corresponding grooves in the second number of grooves, respectively. The first number of high voltage electrode structures and the second number of ground electrode structures are alternately disposed along a Y direction, and a first planar region of each of the first number of high voltage electrode structures and a second planar region of each of the second number of ground electrode structures face each other with a separation space therebetween.

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse

Abrégé

According to the present disclosure, there is provided an inexpensive power conversion system that can achieve loss reduction and space saving. The power conversion system includes: a power converter configured to convert direct-current power input from a direct-current power supply, into alternating-current power or direct-current power; a capacitor provided between a positive electrode direct-current line and a negative electrode direct-current line connected to input terminals of the power converter; a ground line provided with a first ground resistor and configured to connect the negative electrode direct-current line and a ground potential; a discharge line configured to connect the positive electrode direct-current line and the ground line on the ground potential side of the first ground resistor; and a discharge switch provided in the discharge line and configured to be turned on to discharge residual charges of the capacitor.

Classes IPC  ?

• H02M 7/537 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation

Abrégé

A mechanical switch (4) includes a mechanical contact (40) and coils (42, 44) that open and close the mechanical contact (40) by receiving supply of drive currents from a drive power supply (30). The drive power supply (30) comprises capacitors (C1, C2) and switches (320, 340) connected between the capacitors (C1, C2) and the coils (42, 44), respectively. The switches (320, 340) is temporarily turned on to turn on/off the mechanical switch (4) to supply the drive currents from the capacitors (C1, C2) to the coils (42, 44), respectively. The drive power supply (30) further comprises a charge circuit (36) that charges the capacitors (C1, C2) during an off-period of the switches (320, 340), detection circuits (52, 54) that detect the charge currents and voltages of the capacitors (C1, C2), respectively, and a diagnosis circuit (58) that diagnoses a deterioration state of each of the capacitors (C1, C2) from the detected charge current and voltage.

Classes IPC  ?

• G01R 31/00 - Dispositions pour tester les propriétés électriques; Dispositions pour la localisation des pannes électriques; Dispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs

Abrégé

This power conversion device is provided with an arm unit and a control device that controls the arm unit. The arm unit includes a plurality of cells connected in series. The plurality of cells include a pair of connection terminals, a plurality of semiconductor switch elements, a power storage element connected in parallel to the plurality of semiconductor switch elements, and a voltage detector for detecting the voltage of the power storage element. The control device can switch, in a manner corresponding to each of the plurality of cells, the states of a plurality of semiconductor switch elements included in a corresponding cell so as to be in any of states including at least a state in which the connection terminals of the corresponding cell output at least one of a positive and a negative voltage and a state in which the connection terminals are electrically connected to each other. For each instance of a predetermined timing, the control device selects any one of the plurality of cells for switching of the states thereof on the basis of the voltages of the power storage elements of each of the plurality of cells and the durations of the states of the plurality of cells, then switches the states of the plurality of semiconductor switch elements included in the selected cell.

Classes IPC  ?

• G05F 1/70 - Régulation du facteur de puissance; Régulation du courant réactif ou de la puissance réactive
• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs

Abrégé

This DC power conversion device of one embodiment is configured so that a first bridge circuit is driven by a first drive signal and converts first DC power to first AC power. A second bridge circuit is driven using a second drive signal and converts second DC power of second DC voltage to second AC power. An inductance element is provided between the first bridge circuit and the second bridge circuit. A control device determines a phase difference between the first drive signal and the second drive signal that are used for dual active bridge (DAB) phase-shift control, respectively generates the first drive signal and the second drive signal in accordance with the phase difference, and drives the first bridge circuit and the second bridge circuit. In the case where an allowable range for the phase difference is determined using the first DC voltage and the second DC voltage and the magnitude of a current flowing in the inductance element is limited, the control device generates the first drive signal and the second drive signal such that the phase difference is limited within the allowable range.

Classes IPC  ?

• H02M 3/28 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire

Abrégé

The present disclosure provides a strip thickness control device for a hot rolling mill that can reliably pass a leading end of a material-to-be-rolled without raising equipment cost even in a case of rolling the material-to-be-rolled extremely thinly. The strip thickness control device for a hot rolling mill includes a strip thickness meter installed at a delivery side of a last one of rolling stands in a series direction, a gap calculating unit that calculates a gap between rolls in each of the rolling stands, the gap being larger than a product target strip thickness of the material-to-be-rolled and corresponding to a passable strip thickness that enables a leading end of the material-to-be-rolled to be passed stably, a gap setting unit that sets the gap calculated by the gap calculating unit for each of the rolling stands, an automatic strip thickness control unit that executes automatic strip thickness control of minimizing a strip thickness deviation between a strip thickness measured value of the strip thickness meter and the passable strip thickness, and a target strip thickness changing unit that changes the passable strip thickness to the product target strip thickness by adding a strip thickness bias to the strip thickness deviation at a predetermined ramp rate after the leading end of the material-to-be-rolled is passed through the last one of the rolling stands.

Classes IPC  ?

• B21B 37/20 - Commande automatique du calibrage dans des laminoirs en tandem
• B21B 38/04 - Procédés ou dispositifs de mesure spécialement adaptés aux laminoirs, p.ex. détection de la position, inspection du produit pour mesurer l'épaisseur, la largeur, le diamètre ou d'autres dimensions transversales du produit

Abrégé

Provided is a power supply device for an electrolytic cell, said power supply device comprising: a first converter that converts AC power supplied from a power grid into rectified power; a second converter that has a conversion circuit for converting the rectified power outputted from the first converter into DC power suited to the electrolytic cell, and supplies the DC power converted by the conversion circuit to the electrolytic cell 2; and a control device that controls the operation of the conversion from the rectified power to the DC power by the conversion circuit. The conversion circuit has a pair of input terminals, a pair of output terminals, a pair of switching elements, a pair of rectifying elements, a pair of charge storage elements, and a pair of reactors. As a result, this power supply device for an electrolytic cell can reduce a ripple component superimposed on the DC current that is supplied to the electrolytic cell.

Classes IPC  ?

• C25D 21/00 - Procédés pour l'entretien ou la conduite des cellules pour revêtement électrolytique
• C25B 9/65 - Dispositifs pour l'alimentation en courant; Connexions d'électrodes; Connexions électriques intercellulaires
• C25C 7/00 - Eléments structurels, ou leur assemblage, des cellules; Entretien ou conduite des cellules
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

Provided is an overload avoidance support system comprising a recording means, a data aggregation device, a determination device, and a guidance device. The recording means records, in a database, a plurality of pieces of past operation data including product information relating to steel sheet manufactured in the past, steel sheet time unit information, rolling facility time unit information, steel sheet length unit information and rolling facility length unit information, as well as limit reaching, alarms, and handling methods that occurred during rolling. The data aggregation device aggregates the plurality of pieces of recorded past operation data for each piece of product information. The determination device determines, from among the aggregated plurality of pieces of past operation data, past operation data regarding another steel sheet similar to the past operation data regarding a target steel sheet to be rolled as similar past operation data. Before the rolling of the target steel plate, the guidance device causes a display unit to display a guidance including the limit reaching, the alarms, and the handling method included in the similar past operation data.

Classes IPC  ?

• B21B 37/00 - Dispositifs ou procédés de commande spécialement adaptés aux laminoirs ou aux produits laminés

Abrégé

A control device of a power conversion device includes: an amplitude calculating circuit which calculates each of values of amplitudes of fundamental wave components of the alternating currents of the respective phases based on the current values of the alternating currents of the respective phases and a fault determining circuit which performs a magnitude comparison between each of the values of the amplitudes of the fundamental wave components of the alternating currents of the respective phases calculated by the amplitude calculating circuit and a predetermined determination value and which determines a fault of the alternating-current capacitor when the value of the amplitude of at least any phase among the values of the amplitudes of the fundamental wave components of the alternating currents of the respective phases is smaller than the predetermined determination value.

Classes IPC  ?

• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• G01R 31/28 - Test de circuits électroniques, p.ex. à l'aide d'un traceur de signaux
• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif

Abrégé

A cooler of an embodiment includes a contact surface, a flow path formation portion, a supply portion, a discharge portion, and at least one retention portion. The contact surface is in contact with a cooling target object. A flow path through which a refrigerant flows is formed in the flow path formation portion. The supply portion supplies the refrigerant to the flow path. The discharge portion discharges the refrigerant from the flow path. The retention portion changes a flow path cross-sectional area so as to promote retention of the refrigerant locally in the flow path.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

A control apparatus including a first operation control circuit configured to open a direct-current switch when a power conversion apparatus is in a waiting state and a first direct-current voltage value is greater than a predetermined first threshold, a clocking circuit configured to, when the direct-current switch is opened, clock an elapsed time after the direct-current switch is opened, and a soundness determination circuit configured to calculate a first difference voltage value that is a difference between the first direct-current voltage value and a second direct-current voltage value when the power conversion apparatus is in the waiting state and the direct-current switch is opened, and the elapsed time is greater than or equal to a predetermined first time, to determine that the direct-current switch is abnormal when the first difference voltage value is less than or equal to the predetermined second threshold.

Classes IPC  ?

• H02H 3/26 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants
• H02H 7/122 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour redresseurs pour convertisseurs ou redresseurs statiques pour onduleurs, c. à d. convertisseurs de courant continu en courant alternatif
• H02H 7/20 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour équipement électronique

Abrégé

The purpose of the present disclosure is to provide a structure for an active gas generation device capable of supplying a uniform active gas to a treatment space. An electrode unit (55) in an active gas generation device (75) according to the present disclosure comprises a ground conductor (60) provided below a ground-side electrode constituting unit (E2). A housing bottom (1a) of a housing (1) has a housing opening (41), where the housing opening (41) includes an upper region (41a) and a lower tapered region (41t) of which the opening area increases the further downward. A plurality of gas ejection ports (70) provided to the ground conductor (60) are provided so as to approach each other the further downward such that a plurality of partial active gases collide in a collision region (80), where the collision region (80) is present within the lower tapered region (41t) or within the upper region (41a) which is above the lower tapered region (41t).

Classes IPC  ?

• H05H 1/24 - Production du plasma

Abrégé

An uninterruptible power supply system that includes a selection unit that selects, of a plurality of uninterruptible power supply devices, a necessary number of uninterruptible power supply devices to supply power to a load. Each of the uninterruptible power supply devices performs, when this device is selected, an operating action of supplying power to the load, when this device is not selected, a standby action of not supplying power to the load, and during the standby action, a diagnostic action of diagnosing whether or not a predetermined part of this device has a failure. The selection unit changes uninterruptible power supply devices to be selected, such that the plurality of uninterruptible power supply devices have an equal operating time.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• G01R 31/42 - Tests d'alimentation d'alimentations en courant alternatif

Abrégé

An insulating tape includes a base layer, two adhesive layers, and two reinforcing layers. The base layer has a first surface and a second surface opposite to the first surface. The two adhesive layers contain nano-sized silica particles, and each overlap a corresponding one of the first surface and the second surface. The two reinforcing layers are each provided for a corresponding one of the first surface and the second surface, and are bonded to the base layer by the adhesive layers.

Classes IPC  ?

• H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre
• H02K 3/32 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement

Abrégé

The present invention provides a means for suppressing overvoltage breakdown of semiconductor elements in a power converter due to lightning surges in a multilevel power conversion system.　This multilevel power conversion system comprises a multilevel power converter (30) and a control device (40) including: an operation control unit (51) that, on the basis of a predetermined condition, transitions the operation mode of the multilevel power converter (30) to a standby mode in which power conversion is not performed between a DC input/output unit (31) and an AC input/output unit (32); and a gate signal generation unit (53) that, in the standby mode, generates and outputs a gate signal to put one and/or both of a third semiconductor switching element (3) and a second semiconductor switching element (2) into a state of continuity or a switching state.

Classes IPC  ?

• H02M 7/487 - Onduleurs bloqués au point neutre

Abrégé

This uninterruptible power supply device is provided with: a semiconductor switch (1) that is connected between a bypass AC power supply (11) and a load (14), that is turned on when the bypass AC power supply is operational, and that is turned off when a bypass AC power supply is interrupted; and an inverter (8) that supplies, to the load, an AC power provided from an AC power supply (13) or obtained by converting a DC power supplied from a battery (13), when the bypass AC power supply is interrupted, and that supplies, to the load, an assist current (Ia) for the difference between a load current (IL) and a threshold current (Ith) when the load current is greater than the threshold current at a time of the bypass AC power supply being operational. Accordingly, even when the load current increases due to load fluctuation, a current flowing through the semiconductor switch can be maintained at or below the threshold current.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique

Abrégé

An anti-flicker device (100) is connected to a power system to which is connected a power conditioner (30) for connecting a distributed power source (40) to a grid. The anti-flicker device (100) is provided with: a power converter (110) for performing power conversion between a power storage element (120) and the power system; a voltage detector (134) for detecting an alternating current voltage on the power system; and a control device (130) for controlling the output of the power converter (110) on the basis of the detected alternating current voltage. The control device (130) controls the power converter (110) so as to: respond to a rise in the effective value of the alternating current voltage by converting direct-current power outputted from the power storage element (120) to alternating-current power and outputting the foregoing to the power system; and respond to a drop in the effective value of the alternating current voltage by converting alternating-current power from the power system to direct-current power and outputting the foregoing to the power storage element (120).

Classes IPC  ?

• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux

Abrégé

Provided is a drive circuit (1), wherein a common substrate (10) generates a common drive signal (DRS) for on/off control of a plurality of power semiconductor elements (61p-63p) connected in parallel. Each of a plurality of individual substrates (30a, 31, 30c) is individually provided to a corresponding power semiconductor element, and supplies the drive signal to the corresponding power semiconductor element. Among the plurality of individual substrates, one individual substrate or some of the individual substrates (31) include(s) a detection circuit (41). The detection circuit (41) changes the drive signal (DRS) by transmitting an abnormality detection signal (DTS) to the plurality of individual substrates and the common substrate when an abnormality in the electrical characteristics of the corresponding power semiconductor element (62p) is detected.

Classes IPC  ?

• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H03K 17/08 - Modifications pour protéger le circuit de commutation contre la surintensité ou la surtension
• H03K 17/12 - Modifications pour augmenter le courant commuté maximal admissible

Abrégé

An uninterruptible power supply apparatus includes a feed compensation circuit and a bypass circuit. The bypass circuit is provided in electrically parallel with the feed compensation circuit. The bypass circuit includes first to third switches and first to third circuits. The first to third switches are connected respectively to the first to third phases of a three-phase AC load. The first to third circuits are provided in electrically parallel with the first to third switches, respectively. The first circuit includes a first snubber circuit, a second snubber circuit, and a power line. The second circuit includes a first snubber circuit, a second snubber circuit, and a power line. The third circuit includes a first snubber circuit, a second snubber circuit, and a power line. Respective power lines of the first to third circuits are electrically connected to each other.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• H02M 1/34 - Circuits d'amortissement

Abrégé

A fluid check piping of an embodiment includes a piping main body, a check window, and a check plate. The piping main body is arranged along a horizontal direction, and a fluid flows through an inside of the piping main body. The check window is provided on an upper portion of a circumferential wall of the piping main body, and the inside of the piping main body is capable of being viewed from an outside of the piping main body. The check plate is provided on an inner circumferential surface of the piping main body, is rotatably arranged side-by-side with the check window, droops by its own weight, and rises so as to block the check window in response to a pressure of the fluid.

Classes IPC  ?

• F16L 55/00 - Dispositifs ou accessoires à utiliser avec, ou en liaison avec, les tuyaux ou les systèmes de tuyaux

Abrégé

A processor (500), upon receiving execution data, causes an execution program to proceed on the basis of the execution data. The processor (500), upon receiving update data, writes the update data to a memory (502) and causes an update of an update program to proceed. If a programmable device (50) is reset after completion of the update of the update program, the processor (500) terminates the execution program and launches the update program as the execution program.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique

Abrégé

A PI controller that calculates a PI control value for charge limitation, which is a PI control value for a deviation between a DC voltage applied to an inverter circuit and a charge limiter operating voltage when the DC voltage is higher than the charge limiter operating voltage, and calculates a PI control value for discharge limitation, which is a PI control value for a deviation between the DC voltage and a discharge limiter operating voltage when the DC voltage is lower than the discharge limiter operating voltage. A limiter regulator increases a limitation on a charging power command value from a host device by a command value limiter in accordance with the PI control value for charge limitation and increases a limitation on a discharging power command value from the host device by the command value limiter in accordance with the PI control value for discharge limitation.

Classes IPC  ?

• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont

Abrégé

A controller according to one embodiment of the present invention is for a power conversion device comprising: a semiconductor switching element that generates heat by power conversion; a heat sink of the semiconductor switching element; and a cooling mechanism that cools the heat sink. The controller includes an element temperature estimation unit and a control unit. The element temperature estimation unit derives an estimated value of the temperature of the semiconductor switching element by using either the drive amount of the semiconductor switching element or the temperature at a predetermined position within a prescribed range from the position of the semiconductor switching element. The control unit identifies an abnormal state of the cooling mechanism when the temperature difference between the estimated value of the temperature of the semiconductor switching element and the temperature at the prescribed position in the power conversion device has exceeded a predetermined threshold temperature. The threshold temperature is set to be lower than the upper limit temperature of an allowable range for the temperature difference and higher than a reference temperature predetermined in association with the calorific value of the semiconductor switching element.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation

Abrégé

This electric power conversion apparatus (2) comprises an electric power converter (3) and a control device (4). The control device (4) comprises: a first electric current command calculation unit (24) that calculates a first electric current command value on the basis of voltage representative values and DC voltage command values of all electric power storage elements (10); an electric power calculation unit (23) that calculates unbalanced components of the output electric power from arms; a first electric power command calculation unit (27) that calculates unbalanced component command values so that the voltage values of the electric power storage elements are balanced among the arms; a phase electric current command calculation unit (28) that generates an electric current command value for each phase on the basis of the unbalanced components and the unbalanced component command values; a second electric current command calculation unit (30) that calculates a second electric current command value on the basis of the output voltage representative values and the electric current command value for each phase; a voltage command generation unit (35) that generates an output voltage command value for each unit converter on the basis of the output electric current, the first electric current command value, and the second electric current command value; and a gate signal generation unit (70) that generates a control signal for each switching element, on the basis of the output voltage command value.

Classes IPC  ?

• H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs

Abrégé

A wind pressure type shutter includes first and second rotation shafts, and first and second flaps. The first flap rotatably hung on the first rotation shaft closes a flow path in a vertical position and opens the flow path in a position rotated from the vertical position. The second flap rotatably attached to the second rotation shaft closes the flow path and prevents the rotation of the first flap by an upstream-side end portion of the second flap in a horizontal position, and opens the flow path in a position rotated from the horizontal position. When a negative pressure is generated downstream of the second flap, the second flap rotates to open the flow path and the upstream-side end portion is disengaged from the first flap, so that the first flap rotates toward a downstream side to open the flow path.

Classes IPC  ?

• H02B 1/14 - Volets ou protecteurs pour empêcher l'accès aux contacts
• H02B 1/56 - Refroidissement; Ventilation

Abrégé

A motor control device includes a signal identifying unit and an overvoltage detecting unit. The signal identifying unit includes an optical isolator that converts an electrical signal supplied via a terminal to which an external device is connected and a switch that turns off a connection circuit connected to the terminal. The overvoltage detecting unit is configured to turn off the switch when a voltage applied to the connection circuit is greater than a threshold voltage.

Classes IPC  ?

• H02H 7/08 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques
• H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité

Abrégé

This quality defect analysis assistance system for a rolled product is provided with a plurality of recording devices, a conversion device, and a search device. A first recording device records steel sheet time-unit information, rolling facility time-unit information, and manual operation time-unit information in a time-axis performance database in association with a product ID of the steel sheet. The conversion device converts each of the steel sheet time-unit information, the rolling facility time-unit information, and the manual operation time-unit information into length-unit information. A second recording device records each information converted by the conversion device in a product-unit database in association with the product ID. A third recording device records a rolling plan of the rolling plant and an error occurrence record of the rolling facility in the product-unit database. The search device uses the product ID of the steel sheet determined to be a defective product as a search key to extract information on the defective product from the time-axis performance database, the product-unit database, a machine-unit database, and an electricity-unit database.

Classes IPC  ?

• B21B 38/00 - Procédés ou dispositifs de mesure spécialement adaptés aux laminoirs, p.ex. détection de la position, inspection du produit

Abrégé

A drive system according to an aspect of an embodiment includes a rotor phase detection unit, a phase estimation unit, a phase error adjustment unit, and a drive control unit. The rotor phase detection unit detects a phase of a rotor of a synchronous motor and outputs phase information indicating the detected phase. The phase estimation unit generates an initial phase command of defining a position of the rotor of the synchronous motor by using a correction amount for correcting a phase error. The phase error adjustment unit generates the correction amount for adjusting a phase error of an initial magnetic pole position of the synchronous motor by using a phase error of the initial phase command at a timing defined by the phase information. The drive control unit controls the driving of the synchronous motor by using the initial phase command obtained by adjusting the phase error.

Classes IPC  ?

• H02P 6/20 - Dispositions pour le démarrage
• H02P 6/06 - Dispositions pour la régulation de la vitesse d'un seul moteur dans lesquelles la vitesse du moteur est mesurée et comparée à une grandeur physique donnée pour ajuster la vitesse du moteur
• H02P 6/16 - Dispositions de circuits pour détecter la position

Abrégé

A SCADA server apparatus includes a communication driver, and a client management unit connected to the HMI client apparatuses in one-to-one relationship. The client management unit includes a reception thread receiving signal data transmitted from the communication driver, first and second signal data buffers capable of storing the signal data received by the reception thread in association with a signal data identifier for each data type, and a transmission thread reading out the signal data stored in the first or second signal data buffer and transmitting the read signal data to the HMI client apparatuses. During a period when the transmission thread reads out the signal data from one of the first and second signal data buffers and transmits the signal data to the HMI client apparatuses, the signal data stored in another of the first and second signal data buffers is overwritten.

Classes IPC  ?

• G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques

Abrégé

This material property prediction device for a rolled product comprises: an approximation model generation unit for generating, off-line, an approximation model by which to comprehensively predict material properties of group of rolled products produced by a rolling line; and a material property prediction unit for predicting, by using the approximation model, material properties in each three-dimensional mesh-like region of the rolled products produced by the rolling line. The approximation model generation unit comprises: a data set generation unit which has a condition setting part for setting rolling conditions for the group of rolled products and a material calculation part for calculating material properties and metallurgical phenomena under the rolling conditions and which generates a data set used for generating the approximation model; and a model parameter determination unit for determining parameters for representing the approximation model by using the data set.

Classes IPC  ?

• B21B 37/00 - Dispositifs ou procédés de commande spécialement adaptés aux laminoirs ou aux produits laminés

Abrégé

A reactive power control device includes a voltage acquisition unit that detects a grid voltage and a DC voltage; a modulation rate calculation unit that calculates a modulation rate; a reactive power command acquisition unit that obtains a first reactive power command from a host device; a blind zone determination unit that determines whether the first reactive power command is at a blind zone level; a reactive power command calculation unit that limits or compensates the first reactive power command according to the modulation rate and calculates a second reactive power command when the blind zone determination unit determines that the first reactive power command is not at the blind zone level; and a reactive power command output unit that outputs the second reactive power command when the second reactive power command is calculated, and outputs the first reactive power command when the second reactive power command is not calculated.

Classes IPC  ?

• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux

Abrégé

This SCADA web HMI system comprises a PLC, an HMI client machine, and a SCADA server machine connected via a computer network. The PLC transmits block data relating to a field apparatus group that constitutes an industrial plant to the SCADA server machine at prescribed periods. The SCADA server machine comprises a communication driver that receives the block data, and a client management unit that is connected one-to-one with a plurality of HMI client machines, and performs WebSocket communication with each HMI client machine. The HMI client machines each execute a web browser that displays an HMI screen on which parts showing the status of the industrial plant are disposed, and update the status of the parts according to the signal data received from the client management unit. The HMI client machine comprises a client installer for installing SCADA web programs loaded during startup of the web browser.

Classes IPC  ?

• G05B 19/05 - Automates à logique programmables, p.ex. simulant les interconnexions logiques de signaux d'après des diagrammes en échelle ou des organigrammes

Abrégé

This paper wind-up device comprises: a first wind core which is provided on a first arm and on which paper is to be wound up, the first arm turning around a rotation axis; a first motor that drives the first wind core; a second wind core which is provided on a second arm and on which the paper is to be wound up after the first wind core, the second arm turning around the rotation axis; and a control device that performs rotation control of the first motor and the second motor. In the rotation control, after the wind-up of the paper by the first wind core is completed, and during operation of a traverse cutter that cuts the paper near the second wind core after the second wind core, due to the turning of the second arm, came to a position at which to wind up the paper, if the torque value of the second motor is equal to or greater than a torque reference value, the control device switches the control mode of the second motor from speed control to torque control, and performs tension correction control for adjusting the torque value of the second motor such that the tension of the paper falls within a target range.

Classes IPC  ?

• B65H 19/22 - Changement de la bobine dans les mécanismes d'enroulage ou en liaison avec les opérations d'enroulage
• B65H 18/10 - Mécanismes d'enroulage des bandes dans lesquels l'énergie est appliquée à la broche de la bobine
• B65H 19/26 - Coupure de la bande sur son trajet vers la bobine à garnir
• B65H 23/198 - Positionnement, tension, suppression des à-coups ou guidage des bandes longitudinal en commandant ou régulant le mécanisme d'avance de la bande, p.ex. le mécanisme agissant sur la bande courante dans les mécanismes d'enroulage ou en liaison avec les opérations d'enroulement avec commande à moteur

Abrégé

In a control device (3) for an MMC power conversion device, an AC voltage control unit (24) calculates a positive-phase reactive current command value (Id*) on the basis of a detection value of the AC voltage of an AC power system. A DC voltage control unit (20) calculates a positive-phase active current command value (Iq*) on the basis of a representative value of the voltages of power storage elements of converter cells constituting a power converter. A reverse-phase current command value calculation unit (22) calculates reverse-phase current command values (Idn*, Iqn*) for suppressing voltage imbalances of the power storage elements between multiple arms. An output current control unit (25) controls the AC current of the AC power system on the basis of the positive-phase reactive current command value (Id*), the positive-phase active current command value (Iq*), and the reverse-phase current command values (Idn*, Iqn*). The output current control unit (25) limits a positive-phase reactive current (Id) when the magnitude of an arm current passing through each of the arms is equal to or greater than the maximum allowable current value.

Classes IPC  ?

• G05F 1/70 - Régulation du facteur de puissance; Régulation du courant réactif ou de la puissance réactive
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs

Abrégé

An uninterruptible power supply device comprises: an AC/DC converter 11 that converts AC power supplied from a commercial AC power supply (15) into DC power and supplies the DC power to a DC line (DL); a DC/AC converter (13) that converts the DC power received from the DC line into AC power and supplies the AC power to a load (17); a DC/DC converter (12) that provides/receives DC power to/from the DC line and a battery (16); and a bidirectional converter (14) that, when the battery is fast charged, is operated in cooperation with the AC/DC converter (11), converts the AC power supplied from the commercial AC power supply into DC power, and supplies the DC power to the DC line. Thus, deficiency in DC power can be prevented during a fast-charging operation, and the battery can be fast charged while supplying rated power to the load.

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

This power conversion device of one mode of an embodiment is a power conversion device in which for the position of an electric motor, the detection result of the position is outputted from a position sensor each first cycle, and a delay time occurs from a first timing at which the detection result of the position of the electric motor is updated by the position sensor to a second timing at which the information on the position of the electric motor is acquired each second cycle during the control cycle of the electric motor. The power conversion device comprises a compensation amount adjustment unit and a control unit. The compensation amount adjustment unit counts the time from the first timing to the second timing and generates a compensation value for compensating the position information on the basis of the counting result. The control unit implements position control on the electric motor on the basis of the compensated result position information and information on the position command of the electric motor.

Classes IPC  ?

• H02P 23/14 - Estimation ou adaptation des paramètres des moteurs, p.ex. constante de temps du rotor, flux, vitesse, courant ou tension

Abrégé

A power conversion device (101) comprises: an AC/DC converter that is connected to a three-phase AC power source (102), and that converts AC power to DC voltage; and a controller (107) that controls the AC/DC converter. The controller (107) includes: an AC current control unit that outputs an AC output voltage command for each phase on the basis of a current detection value detected by a current detector (104); a third harmonic superimposition unit that performs control to superimpose a frequency that is triple the fundamental frequency onto the AC output voltage command; a PWM unit that determines a switching pattern of a plurality of semiconductor switching elements by comparing a signal superimposed by the third harmonic superimposition unit with a carrier wave; and a zero-phase current calculation unit that calculates a zero-phase current on the basis of the current detection value. The AC current control unit excludes a frequency component of a predetermined range of the zero-phase current from the target of control on the basis of a zero-phase current value obtained by the zero-phase current calculation unit.

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

An uninterruptible power supply device that includes a housing having a rectangular parallelepiped shape, a plurality of power conversion units, and a bus unit for connecting the plurality of power conversion units in parallel to each other. The plurality of power conversion units are stacked in a vertical direction and housed in the housing. The bus unit is arranged in the housing to face a rear surface of the housing. The bus unit includes a plurality of buses extending in the vertical direction, at least one support member that supports the plurality of buses such that the plurality of buses are spaced apart from each other in a horizontal direction, and at least one fixing member that removably fixes each support member to the housing.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

A twin-fluid nozzle spray apparatus according to one aspect includes a gas regulator that outputs compressed gas at a predetermined pressure in a compressed-gas supply system, a positive displacement pump that includes a relief valve configured to feed pressurized liquid at a pressure exceeding a predetermined pressure in a pressurized-liquid supply system back to a liquid supply side, and outputs the pressurized liquid, a liquid regulator or a needle valve that outputs the pressurized liquid output by the positive displacement pump while maintaining a pressure of the pressurized liquid at a discharge pressure having a predetermined value, and a twin-fluid nozzle that mixes and sprays the compressed gas output by the gas regulator and the pressurized liquid output by the liquid regulator or the needle valve.

Classes IPC  ?

• B05B 7/08 - Pistolets pulvérisateurs; Appareillages pour l'évacuation avec des orifices de sortie séparés, p.ex. pour former des jets parallèles, pour former des jets croisés
• B05B 1/30 - Buses, têtes de pulvérisation ou autres dispositifs de sortie, avec ou sans dispositifs auxiliaires tels que valves, moyens de chauffage agencés pour commander un débit, p.ex. à l'aide de conduits de section réglable

Abrégé

A first controller (40) comprises a first processor and a first memory. A second controller (50) comprises a second processor and a second memory. When transmitting data from the first controller (40) to the second controller (50), the first controller (40) repeatedly executes an operation of writing the transmission data to the first memory according to a clock signal, and reads out the transmission data from the first memory for output to a communication line. The second controller (50) writes received data, which is received from the communication line, into the second memory according to the clock signal, and reads out the received data from the second memory according to the clock signal. The second controller (50) transfers a data value in a current clock cycle to the second processor if a plurality of data values in a plurality of consecutive clock cycles, including the current clock cycle, match in the read received data.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• H04L 1/08 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue par émission répétée, p.ex. système Verdan

Abrégé

In the present invention, a base member (20) includes a bottom plate (21) and a side plate (23). In the bottom plate (21), a plurality of first capacitors (10) are arranged in a second direction that is an alignment direction. The side plate (23) is joined to an end of the bottom plate (21) in a third direction and disposed vertically from the bottom plate (21) in a first direction. A pair of fins of each of a plurality of fixing members (70) are attached to the side plate (23) so that the plurality of capacitors (10) are fixed to the base member (20). In the side plate (23), respective fixing members (70) of odd-numbered rows in the alignment direction are provided at the same position in the first direction. Respective fixing members (70) of even-numbered rows in the alignment direction are provided at the same position in the first direction, wherein, in the first direction, the positions of the fixing members (70) of the even-numbered rows are different from the positions of the fixing members (70) of the odd-numbered rows. Fins of two fixing members (70) adjacent to each other in the second direction are arranged side by side in the first direction.

Classes IPC  ?

• H01G 2/02 - Dispositifs de montage
• H01G 4/38 - Condensateurs multiples, c. à d. combinaisons structurales de condensateurs fixes

Abrégé

An object of the present disclosure is to obtain an active gas generation apparatus capable of supplying a highly concentrated active gas from a gas ejection port to a processing space at a subsequent stage. Then, in the active gas generation apparatus (51) of the present disclosure, in a main dielectric space being a space in which an electrode dielectric film (30) and an electrode dielectric film (40) face each other, a region where electrode conductive films (31) and (41) overlap each other in a plan view is defined as a main discharge space (50). In an auxiliary dielectric space being a space where the electrode dielectric film 30 and a shield dielectric film 8 face each other, a region including a dielectric through hole (14) and a cover through hole (15) is defined as an auxiliary discharge space (58). The auxiliary discharge space (58) includes a part of a buffer space (9) above the shield dielectric film (8), and a path leading from the auxiliary discharge space (58) to the gas ejection port (61.62) is defined as an active gas flow path.

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse

Abrégé

A plurality of connection members extend in a first direction perpendicular to a vertical direction. A plurality of terminal members are attached to the plurality of connection members, respectively. Each of the plurality of terminal members includes a fixed portion and a connected portion. The fixed portion is attached to a connection member and extends in the first direction. The connected portion is joined to one end portion of the fixed portion in a longitudinal direction, and an electric wire is connected to the connected portion. The connected portion extends in a direction orthogonal to the direction in which the fixed portion extends. Each of the plurality of terminal members is attached to the connection member in any of a first attitude in which the connected portion extends upward in the vertical direction and a second attitude in which the connected portion extends downward in the vertical direction.

Classes IPC  ?

• H02B 1/20 - Schémas de barres omnibus ou d'autres fileries, p.ex. dans des armoires, dans les stations de commutation

Abrégé

A web browser (5) makes a communication thread (7) and a DOM update thread (6) run in parallel. The communication thread (7) overwrites, when signal data having the same unique identifier as received signal data already exists in a buffer area, the signal data stored in the buffer area with the received signal data. When receiving a signal data request event from the DOM update thread (6), the communication thread (7) transmits all signal data stored in the buffer area to the DOM update thread (6). The DOM update thread (6) updates a DOM for all the signal data. The DOM update thread (6) transmits, after updating the DOM, the signal data request event to the communication thread and updates, according to the updated DOM, a display content of a display part displayed on the web browser (5).

Classes IPC  ?

• G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
• G06F 9/54 - Communication interprogramme
• G06F 13/00 - Interconnexion ou transfert d'information ou d'autres signaux entre mémoires, dispositifs d'entrée/sortie ou unités de traitement

Abrégé

A detection device according to an embodiment detects a presence or absence of a processing material adhered to an interior wall of a drum of a mill pulverizing a mineral. The detection device is configured to store an initial torque detected at a preset initial rotation angle, calculate a maximum torque based on the initial torque, the initial rotation angle, and a rotation angle greater than the initial rotation angle, calculate a ratio of a torque at the rotation angle divided by the maximum torque, compare the ratio and a preset threshold, and determine that the processing material is adhered to the interior wall of the drum when the ratio is equal to the threshold or greater than the threshold.

Classes IPC  ?

• B02C 17/18 - Désagrégation au tonneau, c. à d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets - Parties constitutives
• B02C 25/00 - Systèmes de commande spécialement adaptés au broyage ou à la désagrégation
• G01L 5/00 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques
• G01N 33/24 - Matériaux de la terre

Abrégé

Provided is a DC power supply device that is connected to a load that can become a DC power supply, the DC power supply device comprising: a main circuit unit that has a high potential output terminal connected to a high potential input terminal of the load, and a low potential output terminal connected to a low potential input terminal of the load, and that is connected to a power supply, converts the power supplied from the power supply to DC power according to the load, and that supplies the converted DC power to the load; and a first rectifying element that is provided at one of between the high potential input terminal and the high potential output terminal, and between the low potential input terminal and the low potential output terminal, and suppresses the inflow of energy from the load to the main circuit unit. As a result, provided is a DC power supply device that can suppress the inflow of energy from the load.

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02M 3/155 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

An electric power conversion unit comprising a casing, a first element, a second element, and an anti-explosion plate. The first element is disposed inside the casing. The second element is disposed adjacent to the first element in a horizontal direction inside the casing. The anti-explosion plate covers the first element and the second element in a top view of the casing. The anti-explosion plate is a laminate conductor connected to the first element and the second element.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

Provided is an HMI screen creation device capable of creating an HMI screen in which a plurality of operation elements can be exclusively placed with a high degree of freedom without degrading the quality of the HMI screen. An HMI screen design device according to the present disclosure comprises a drawing unit having a stencil area in which the plurality of operation elements to be placed on the HMI screen are arranged so as to be selectable and a drawing area in which a drawing is prepared by placing the operation elements selected on the stencil area, and a drawing data generating unit that generates drawing data, which is data about the drawing, in which the plurality of operation elements are placed. The drawing unit includes an exclusive grouping means that mutually exclusively groups the plurality of operation elements placed on the drawing.

Classes IPC  ?

• G06F 3/04817 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] fondées sur des propriétés spécifiques de l’objet d’interaction affiché ou sur un environnement basé sur les métaphores, p.ex. interaction avec des éléments du bureau telles les fenêtres ou les icônes, ou avec l’aide d’un curseur changeant de comport utilisant des icônes
• G05B 23/02 - Test ou contrôle électrique
• G06F 3/14 - Sortie numérique vers un dispositif de visualisation
• G06F 8/34 - Programmation graphique ou visuelle

Abrégé

An insulation diagnostic device according to an embodiment performs an insulation diagnosis of a three-phase AC motor on the basis of a U-phase current, a V-phase current, and a W-phase current supplied to the three-phase AC motor, and includes: a current vector calculation module that calculates at least one of a zero sequence current vector or a negative sequence current vector on the basis of the U-phase current, the V-phase current, and the W-phase current; a reference current vector storage unit that stores a reference current vector in advance; a current difference vector calculation module that calculates a current difference vector that is a difference between a current vector calculated by the current vector calculation module and the reference current vector; and a determination module that determines an insulation state of the three-phase AC motor on the basis of the current difference vector.

Classes IPC  ?

• G01R 31/14 - Circuits à cet effet
• G01R 31/34 - Tests de machines dynamoélectriques
• H02P 21/14 - Estimation ou adaptation des paramètres des machines, p.ex. flux, courant ou tension

Abrégé

A respiratory ventilators system having an inlet configured to be connected to a pressurized air or gas source; an outlet configured to be connected to a patient interface; a valve in-line between the inlet and the outlet; and a control unit configured to control the valve for controlling flow of pressurized air or gas from the source to the patient, wherein the valve includes an air or gas reservoir or accumulator incorporated into the valve body.

Classes IPC  ?

• A61M 16/20 - Valves spécialement adaptées aux dispositifs respiratoires médicaux
• A61M 16/00 - Dispositifs pour agir sur le système respiratoire des patients par un traitement au gaz, p.ex. bouche-à-bouche; Tubes trachéaux
• A61M 16/04 - Tubes trachéaux
• A61M 16/06 - Masques respiratoires ou pour l'anesthésie
• A61M 16/10 - Préparation de gaz ou vapeurs à respirer

Abrégé

Provided is a power conversion system comprising a power conversion device and equipment. The power conversion device includes: an inverter that converts power into AC power and outputs the AC power; and a filter circuit in which a circuit component provided on the AC output side of the inverter and having a damping resistor and/or a filter reactor, and an AC capacitor that is disconnected from the circuit in the event of a fault, are connected in series. The equipment includes: a voltage recognition unit that recognizes the voltage value of a voltage generated by the circuit component; a voltage calculation unit that calculates a prescribed voltage calculation value on the basis of the voltage value of the voltages generated by the circuit component and recognized by the voltage recognition unit; a fault determination unit that compares the magnitude of the voltage calculation value calculated by the voltage calculation unit with a predetermined threshold value, and determines that there is a fault in the AC capacitor when the voltage calculation value is smaller than the predetermined threshold value; and an operation control unit that stops the power conversion device when the fault determination unit has determined that there is a fault in the AC capacitor while the power conversion device is running.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

Provided is a charge/discharge management system comprising a plurality of output units which are used for connection to EVs and a charger which charges the EVs connected to the plurality of output units, the charger comprises a power supply unit which converts power supplied from a power supply to DC power matching the EVs, a switching unit which switches paths between the power supply unit and the plurality of output units to thereby supply the DC power output from the power supply unit to any one of the plurality of output units, and a control unit which controls the operation of the power conversion performed by the power supply unit and controls the operation of the path switching performed by the switching unit and the control unit starts the charge of the EV having a charge amount of an electricity storage device lower than or equal to a charge start value. As a result, there is provided the charge/discharge management system which can suppress over-discharge of the plurality of EVs more simply while suppressing an increase in facility cost.

Classes IPC  ?

• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs

Abrégé

This hot rolling line comprises: a rough rolling mill; a finishing rolling mill; an intermediate device group provided between the rough rolling mill and the finishing rolling mill; a rough outlet side thermometer provided between the rough rolling mill and the intermediate device group; a finishing inlet-side thermometer provided between the finishing rolling mill and the intermediate device group; and a control device. The intermediate device group includes a cooling device which uses cooling water to cool a material-to-be-rolled. The control device includes: a setting calculation device which determines a flow rate setting value of the cooling water in the cooling device; a feed forward control device which executes, on the basis of the flow rate setting value, a feed forward control of the flow rate of the cooling water in the cooling device; and a learning device which calculates learning values on the basis of actual flow rate values of the cooling water in the cooling device and finishing inlet-side temperature values indicating actual temperature values of the material-to-be-rolled measured by the finishing inlet-side thermometer.

Classes IPC  ?

• B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer

Abrégé

According to an embodiment, a power conversion system includes a plurality of converters and a control unit. The plurality of converters are provided in parallel for each phase of a multi-phase alternating current power system. The control unit uses a plurality of carrier signals having a prescribed phase difference from each other in carrier comparison type pulse width modulation (PWM) control. The control unit detects a current of a primary side of the plurality of converters at each of four or more even-numbered timings when the four or more even-numbered timings are defined at prescribed time intervals during one cycle of a specific carrier signal among the plurality of carrier signals. The control unit generates a reference voltage for the PWM control using a value of the detected current of the primary side and a value of a reference current of the primary side and updates the reference voltage at each of the four or more even-numbered timings. The control unit controls a specific converter among the plurality of converters using the specific carrier signal and the updated reference voltage.

Classes IPC  ?

• H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 5/458 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge ou des dispositifs à semi-conducteurs pour transformer le courant continu intermédiaire en courant alternatif utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

A rack includes first to fourth column members and first and second guide members. A case of an electric device has first and second side surfaces in a width direction that are supported by the first and second guide members, respectively. First and second restriction members are attached to inner surfaces of the first and second side surfaces of the case, respectively, for restricting the case from moving in a front direction of the rack. Second restriction member is attached to face the first restriction member in the width direction. In a state where the electric device is housed within the rack, the first restriction member is located between the first and third column members in a front-back direction. The second restriction member is located between the second and fourth column members in the front-back direction.

Classes IPC  ?

• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails
• H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
• H05K 7/18 - Structure des bâtis ou des cadres

Abrégé

Provided is an electricity storage system comprising: a plurality of power storage devices capable of discharging and charging direct current power; a plurality of power conversion devices that convert the direct current power stored in the plurality of power storage devices into power corresponding to the load, supplies power to the load on the basis of the direct current power stored in the plurality of power storage devices, converts the power of the load into direct current power corresponding to the plurality of power storage devices, and charges the plurality of power storage devices on the basis of the power on the load side; and a control device that controls power conversion operations of the plurality of power conversion devices, wherein the control device includes a conversion device determining unit that determines the power conversion device to which the operation command is to be transmitted, among the plurality of power conversion devices, and the conversion device determining unit determines the number of power conversion devices to which the operation command is to be transmitted, on the basis of information regarding states of the plurality of power storage devices and the plurality of power conversion devices. This provides an electricity storage system and a control device capable of suppressing power loss.

Classes IPC  ?

• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
• H02J 3/16 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par réglage de puissance réactive
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

A control panel (1) according to an embodiment comprises: a housing (2); a unit (10) placed on a base panel (3) inside the housing; a caster (19) that is provided to a bottom section (10d) of the unit and is able to travel on the base panel; an upper section fixing panel (17) that fixes a depth-side upper end (10fu) of the unit when storing the unit; a guiding groove (32) that regulates movements of the caster so that the unit is lowered as far as a fixing position toward the depth side when storing the unit; and a unit fixing part (14) that fixes a depth-side lower end (10fd) of the unit when the entirety of the lower surface of the unit comes into contact with the base panel. As a result, there is provided a control panel with which fixing performance of a unit to a housing is improved, damage to components inside the unit or to connected conductors and cables can be prevented, and ease and workability for taking the unit in and out of the housing can be improved.

Classes IPC  ?

• H02B 1/36 - Baies avec des unités débrochables
• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails

Abrégé

A control apparatus for a power conversion system is a control apparatus for a power conversion system including a power converter connected to a power supply or a capacitor through a wire, a coil disposed at a position around the wire where a magnetic flux is linked with the coil when a short-circuit failure in which a voltage of the power supply or the capacitor is short-circuited occurs, the magnetic flux being generated by the short-circuit failure, and a voltage detection circuit configured to detect a voltage value of a voltage across the coil. The control apparatus includes: a voltage acquisition unit configured to acquire the voltage value of the voltage across the coil detected by the voltage detection circuit; and a failure detection unit configured to detect a short-circuit failure of the power converter, based on the voltage value acquired by the voltage acquisition unit.

Classes IPC  ?

• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
• H02H 7/122 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour redresseurs pour convertisseurs ou redresseurs statiques pour onduleurs, c. à d. convertisseurs de courant continu en courant alternatif
• H02M 7/493 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande les convertisseurs statiques étant agencés pour le fonctionnement en parallèle
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont

Abrégé

This DC electric power conversion device comprises a chopper circuit having a first switch that is connected in series to a first connection point and a second connection point, a first diode that is connected in antiparallel to the first switch, a second switch that is connected in series to the first connection point and a third connection point, a second diode that is connected in antiparallel to the second switch, a first capacitor that is connected in series to the second contact point and the third contact point, a second capacitor that is connected in series to the third contact point and a fourth contact point, and a DC power supply and a first reactor that are connected in series to the fourth connection point and the first connection point in the stated order. In the chopper circuit, when a step-up mode is in effect, an electric current path returning to the DC power supply from the DC power supply via the first reactor, the first connection point, the second switch, the third connection point, the second capacitor, and the fourth connection point in the stated order is formed while the first switch is off and the second switch is on, and an electric current path returning to the DC power supply from the DC power supply via the first reactor, the first connection point, the first diode, the second connection point, the first capacitor, the third connection point, the second capacitor, and the fourth connection point in the stated order is formed while the first switch and the second switch are both off. Additionally, in the chopper circuit, when a step-down mode is in effect, an electric current path returning to the second capacitor via the second capacitor, the third connection point, the first capacitor, the second connection point, the first switch, the first connection point, the first reactor, the DC power supply, and the fourth connection point in the stated order is formed while the first switch is on and the second switch is off, and an electric current path returning on the second capacitor via the second capacitor, the third connection point, the second diode, the first connection point, the first reactor, the DC power supply, and the fourth connection point in the stated order is formed while the first switch and the second switch are both off.

Classes IPC  ?

• H02M 3/155 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

A load current distribution adjustment device of a power conversion device for energy storage system includes a cross-current calculation unit configured to calculate a cross-current, a first correction amount calculation unit configured to calculate a first correction amount of a voltage command value on the basis of the cross-current calculated and an output voltage of the own power conversion device, a gain calculation unit configured to calculate a weighting gain on the basis of an average voltage of DC voltages and a DC voltage of the own power conversion device, a second correction amount calculation unit configured to calculate a second correction amount of the voltage command value on the basis of the first correction amount and the weighting gain, and an output current control unit configured to control the output current on the basis of the predetermined voltage command value and the second correction amount.

Classes IPC  ?

• H02M 3/155 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

A motor driving system according to an embodiment comprises a converter device and an inverter device. The converter device converts a first AC voltage into a DC voltage. The inverter device converts the DC voltage into a second AC voltage and outputs the second AC voltage to a motor. The converter device causes the DC voltage to follow a DC voltage command value. The inverter device causes the speed of the motor to follow a speed command value. The inverter device corrects the speed command value on the basis of the DC voltage command value and the DC voltage. The inverter device applies the corrected speed command value to control the motor.

Classes IPC  ?

• H02P 21/22 - Commande du courant, p.ex. en utilisant une boucle de commande
• H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs

Abrégé

An uninterruptible power supply apparatus includes an operation unit for setting a second reference voltage, a computation unit that calculates a first reference voltage higher than the set second reference voltage and lower than a maximum value of the first reference voltage, a first reference voltage generation unit that generates the first reference voltage calculated by the computation unit, and a second reference voltage generation unit that generates the second reference voltage set by the operation unit. Thus, a voltage of a DC line can be made lower than the maximum value of the first reference voltage for improved efficiency of the uninterruptible power supply apparatus.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique

Abrégé

The purpose of the present disclosure is to provide a vehicle test device, such as a chassis dynamometer, which eliminates the need for advance preparation concerning the tire turning angle and enables an accurate angular displacement amount recognition. Displacement sensors (7L, 7R) according to the present disclosure detect tire turning angles of tires (6L, 6R) using a distance measurement region (90) in the tires (6L, 6R) as detection targets, and acquire angle measurement information (S7L, S7R). A controller (15) receives the angle measurement information (S7L, S7R) from the displacement sensors (7L, 7R), obtains a steering angle that matches the tire turning angles indicated by the angle measurement information (S7L, S7R), and outputs, to a motor drive device (19), steering angle instruction information (SG) that instructs the obtained steering angle. The motor drive device (19) drives a turning motor (42) of roller turning mechanisms (3L, 3R) in accordance with the steering angle instruction information (SG).

Classes IPC  ?

• G01M 17/007 - Véhicules à roues ou à chenilles

Abrégé

A plate crown control device controls tandem rolling equipment based on delivery-side plate crown setting calculation values of stands calculated by setting calculation, mechanical plate crown setting calculation values of the stands, and setting values of bending forces and shift positions of the stands. A processor calculates first learning current values based on differences between mechanical plate crown observation values and mechanical plate crown actual calculation values. The processor prorates first learning values with first learning current values and smoothing gains and updates the first learning values. The processor calculates, in the setting calculation for the next and subsequent materials, setting values of bending forces and shift positions of the stands using mechanical plate crown setting calculation values after correction obtained by adding the first learning values to the mechanical plate crown setting calculation values.

Classes IPC  ?

• B21B 37/38 - Commande de la planéité ou du profil pendant le laminage de bandes, de feuilles ou de tôles utilisant la flexion du cylindre
• B21B 37/16 - Commande de l'épaisseur, de la largeur, du diamètre ou d'autres dimensions transversales

Abrégé

An electric power conversion unit includes a housing, a plurality of fans, a heat sink, and a plurality of semiconductor elements. The fan generates a flow of air at an inside of the housing. The heat sink forms a flow path of the air on an upstream side of a flow route of the air at the inside of the housing. The plurality of semiconductor elements is arranged and aligned along a direction which intersects a flow direction of the air in the heat sink on an element arrangement plane of the heat sink.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

In the present invention, regarding first control indexes for steel-sheet winding temperature, four values, i.e., target, simple prediction, detailed prediction, and measured values, are calculated. Additionally, regarding second control indexes for steel-sheet winding temperature, three values, i.e., target, simple prediction, and measured values, are calculated. The target value and the detailed prediction value corresponding to the first control indexes are used for calculating a water spray amount (FF water spray amount) in FF banks. The target values corresponding to the first and second control indexes and the measured values corresponding to the first and second control indexes are used for calculating a water spray amount (FB water spray amount) in FB banks. The water spray amount in the FF banks is controlled on the basis of the positions of segments constituting the steel sheet, an initial water spray amount, and the FF water spray amount. The water spray amount in the FB banks is controlled on the basis of the positions of the segments constituting the steel sheet, an initial water spray amount, and the FB water spray amount.

Classes IPC  ?

• B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer
• B21B 37/76 - Commande du refroidissement sur la table de sortie

Abrégé

This plate thickness control device of a rolling mill, which rolls a material-to-be-rolled to obtain a target plate thickness of a product, comprises a thickness deviation learning unit and a gap correction amount calculation unit. The plate thickness deviation learning unit learns a tendency of a plate thickness deviation that is the difference between the plate thickness of a product and the actual plate thickness of a material-to-be-rolled, which is measured in the outlet side of the rolling mill. In addition, the plate thickness deviation learning unit adopts, as the material-to-be-rolled, a material-to-be-rolled intended to be rolled by means of the rolling mill, and predicts, before rolling the material-to-be-rolled, the plate thickness deviation of the material-to-be-rolled on the basis of product information including the kind of steel and the plate thickness of a product of the material-to-be-rolled, and a value of the material-to-be-rolled measured at the upstream side of the rolling mill. The gap correction amount calculation unit calculates a gap correction amount for correcting a roll gap of the rolling mill so as to negate the plate thickness deviation predicted by the plate thickness deviation learning unit. The plate thickness control device of the rolling mill adjusts the roll gap of the rolling mill on the basis of the gap correction amount calculated by the gap correction amount calculation unit before rolling the material-to-be-rolled.

Classes IPC  ?

• B21B 37/20 - Commande automatique du calibrage dans des laminoirs en tandem

Abrégé

First to third capacitors (UC1 to UC3) each have an identical shape of a rectangular parallelepiped. The rectangular parallelepiped has a first surface (P1) with a first side and a second side orthogonal to each other, a second surface (P2) with the second side and a third side orthogonal to each other, and a third surface (P3) with the third side and the first side orthogonal to each other. The first side has a length not less than twice and less than three times a length of the third side. The first and second capacitors (UC1, UC2) are arranged such that the first surfaces (P1) thereof are perpendicular to an installation surface (10), the first surfaces (P1) face each other while being spaced apart from each other, and the second surfaces (P2) are horizontal to the installation surface (10). The third capacitor (UC3) is arranged such that the first surface (P1) thereof faces the second surfaces (P2) of the first and second capacitors (UC1, UC2) while being spaced apart from each other and the third surface (P3) thereof is flush with the third surfaces (P3) of the first and second capacitors (UC1, UC2).

Classes IPC  ?

• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif

Abrégé

A power conversion device includes a major circuit part converting a power of a distributed power source into AC power corresponding to a power system, and a controller controlling an operation of the major circuit part; the controller includes an estimated value calculation part and a reactive power calculation part; the estimated value calculation part calculates an estimated value of a resistance component of a system impedance of the power system, an estimated value of a reactance component of the system impedance, and an estimated value of a voltage value of the infinite bus power system based on an active power value of a connection point to the power system, a reactive power value of the connection point, and a voltage value of the connection point.

Classes IPC  ?

• H02J 3/01 - Dispositions pour réduire les harmoniques ou les ondulations
• H02J 3/16 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par réglage de puissance réactive
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

This cubicle is an outdoor-installation-type cubicle comprising a surface part formed using a coated sheet metal that is exposed on the outside of the cubicle, and a coating protective member mounted on the edge of the surface part. The coating protective member is provided with a front cover part, a rear cover part, and an edge end cover part. The front cover part contacts the front side of the edge when mounted on the edge of the surface part. The rear cover part contacts the rear side of the edge when mounted on the edge of the surface part. The edge end cover part connects the front cover part and the rear cover part, and wraps around the tip of the edge when mounted on the edge of the surface part. The front cover part, the rear cover part, and the edge end cover part are integrally molded using ASA resin.

Classes IPC  ?

• H02B 1/30 - Enveloppes; Leurs parties constitutives ou accessoires à cet effet - Parties constitutives ou accessoires

Abrégé

The purpose of the present disclosure is to provide an ultrasonic atomization device capable of obtaining a mist supply amount of raw material solution mist with good responsiveness and accuracy. The ultrasonic atomization device (201) according to the present disclosure comprises: a non-contact type mist supply pipe (40) which is disposed above an atomization vessel (1), including a mist output pipe (1t), without contact with the atomization vessel (1); and a leakage prevention tank (45) which is connected to the mist output pipe (1t) without contact with the non-contact type mist supply pipe (40). The leakage prevention tank (45) accommodates an appropriate sealing liquid (16). At this time, the appropriate sealing liquid (16) is also accommodated inside a liquid accommodation space (SP14) disposed between the leakage prevention tank (45) and the mist output pipe (1t).

Classes IPC  ?

• B05B 17/06 - Appareils de pulvérisation ou d'atomisation de liquides ou d'autres matériaux fluides, non couverts par les autres groupes de la présente sous-classe opérant suivant des procédés particuliers utilisant des vibrations ultrasonores

Abrégé

The purpose of the present disclosure is to provide an ultrasonic atomization device that can precisely obtain the mist supply amount of raw material solution mist with good responsivity. An ultrasonic atomization device (101) according to the present disclosure has a non-contact type mist supply pipe (20) above an atomization vessel (1) such that the non-contact type mist supply pipe (20) is not in contact with the atomization vessel (1) including a mist output pipe (1t). A pipe overlapping space (SP12) is provided between a coupling pipe part (23) of the non-contact type mist supply pipe (20) and an upper region (A1t) of the mist output pipe (1t). A leakage prevention gas supply pipe (25) is provided inside the pipe overlapping space (SP12) such that the leakage prevention gas supply pipe (25) is in contact with neither the mist output pipe (1t) nor the non-contact type mist supply pipe (20). The leakage prevention gas supply pipe (25) outputs mist leakage prevention gas (G2) from a gas output port (28) provided in an upper part of the leakage prevention gas supply pipe (25).

Classes IPC  ?

• B05B 17/06 - Appareils de pulvérisation ou d'atomisation de liquides ou d'autres matériaux fluides, non couverts par les autres groupes de la présente sous-classe opérant suivant des procédés particuliers utilisant des vibrations ultrasonores

Abrégé

A switching device for charging equipment includes a controller that controls the switching of the connections by a switching part, the switching part includes a plurality of first switching elements provided to correspond respectively to the plurality of power supplies; and a plurality of second switching elements located between each of the plurality of first switching elements and each of the plurality of charging stations, the plurality of second switching elements allow direct current power supplied from the plurality of power supplies to be selectively supplied via the plurality of first switching elements to each of the plurality of charging stations, the controller controls the switching of the connections by the switching part by controlling switching of each of the plurality of first switching elements and the plurality of second switching elements.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• B60L 53/14 - Transfert d'énergie par conduction
• B60L 53/30 - PROPULSION DES VÉHICULES À TRACTION ÉLECTRIQUE; FOURNITURE DE L'ÉNERGIE ÉLECTRIQUE À L'ÉQUIPEMENT AUXILIAIRE DES VÉHICULES À TRACTION ÉLECTRIQUE; SYSTÈMES DE FREINS ÉLECTRODYNAMIQUES POUR VÉHICULES, EN GÉNÉRAL; SUSPENSION OU LÉVITATION MAGNÉTIQUES POUR VÉHICULES; CONTRÔLE DES PARAMÈTRES DE FONCTIONNEMENT DES VÉHICULES À TRACTION ÉLECTRIQUE; DISPOSITIFS ÉLECTRIQUES DE SÉCURITÉ POUR VÉHICULES À TRACTION ÉLECTRIQUE Échange d'éléments d’emmagasinage d'énergie dans les véhicules électriques - Détails de construction des stations de charge

Abrégé

In this uninterruptible power supply system (1), each uninterruptible power supply device (U) includes a reactor (21) and a semiconductor switch (23) which are connected in series between a bypass AC power supply (6) and a load (8). When turning on each semiconductor switch, load current (IL) is shunted to the series connection bodies of the N reactors and semiconductor switches. Accordingly, in comparison with a case without the reactors, it is possible to suppress and reduce variation in the magnitudes of currents (I1 to IN) flowing through the N semiconductor switches, thereby enabling reduction in the size of the semiconductor switch and reduction in cost.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique

Abrégé

A SCADA web HMI client device comprises a processor and a memory. The memory stores a user access level, image data for an HMI screen, and screen access authority information, all received from a web server. The screen access authority information includes an operation access level of the HMI screen and operation permission/prohibition of the HMI screen by the web browser. The processor draws the HMI screen in an operable state on the web browser in a case where the user access level is greater than or equal to the operation access level and where operation of the HMI screen by the web browser is permitted. The processor draws the HMI screen in an inoperable state on the web browser in a case where the user access level is less than the operation access level or operation of the HMI screen by the web browser is not permitted.

Classes IPC  ?

• G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques

Abrégé

A solar power generation system includes solar cell panels, power conversion devices, and a control device; the plurality of power conversion devices convert direct current power supplied from the plurality of solar cell panels into alternating current power corresponding to a power system, the plurality of power conversion devices supply, to the power system, the alternating current power; the control device includes a total output value calculation part, a difference calculation part, and an upper limit command value calculation part, the total output value calculation part is configured to calculate a total active power value indicating a magnitude of currently-outputtable active power from all of the plurality of power conversion devices, the difference calculation part is configured to calculate a difference between a total upper limit command value and the total active power value, and calculate a difference per device of the plurality of power conversion devices.

Classes IPC  ?

• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p.ex. module CA
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02S 50/00 - Surveillance ou tests de systèmes PV, p.ex. équilibrage de charge ou identification des défauts

Abrégé

A drive system (1) drives a multi-phase AC motor (2) having a plurality of windings. The drive system (1) includes a first power converter (3U), a second power converter (3V), a first conversion controller (20U), and a second conversion controller (20V). The first power converter (3U) causes a current to flow through a winding of a first phase of the multi-phase AC motor (2). The second power converter (3V) causes a current to flow through a winding of a second phase of the multi-phase AC motor (2). The first conversion controller (20U) decides on either a three-level phase voltage waveform or a five-level phase voltage waveform on the basis of setting information for designating a type of phase voltage waveform and controls the first power converter (3U) so that the decided phase voltage waveform is output from the first power converter (3U). The second conversion controller (20V) controls the second power converter (3V) so that a phase voltage waveform having the same type as the phase voltage waveform of the first power converter (3U) is output from the second power converter (3V) on the basis of the setting information for designating the type of phase voltage waveform.

Classes IPC  ?

• H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
• H02P 27/14 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions avec au moins trois niveaux de tension

Abrégé

Provided is an electrolytic cell power supply device that comprises: a first converter that converts AC power supplied from a power grid into DC power; a power storage element that performs power storage of the DC power outputted from the first converter; a second converter that converts the DC power stored in the power storage element and supplies the converted power to an electrolytic cell; and a control device that controls operation of the first converter and the second converter. The control device has an anti-corrosion driving mode that, when a power grid outage occurs and on the basis of the DC power stored in the power storage element, controls the operation of the second converter so as to suppress generation, in the electrolytic cell, of a reverse current, which is a current component flowing in the direction opposite to the normal electrolysis direction. Due to this configuration, an electrolytic cell power supply device is provided that enables, using a simpler configuration, suppression of reverse current generation.

Classes IPC  ?

• C25B 15/00 - Conduite ou entretien des cellules
• C25B 9/65 - Dispositifs pour l'alimentation en courant; Connexions d'électrodes; Connexions électriques intercellulaires

Abrégé

A control device (15) of this uninterruptible power supply device executes a test mode during execution of an inverter power feed mode to bring a bypass circuit (8) into a conducting state and to reduce an output current (IO) of an inverter (5), thereby determining whether or not the bypass circuit operates normally on the basis of an output voltage (VO) of the inverter. Thus, when the bypass circuit is not operating normally, stop of an operation of a load (23) can be prevented by repairing or replacing the bypass circuit in the event of an inverter failure.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique

Abrégé

This uninterruptible power supply includes a switch that is turned off while an AC power supply is normal and turned on during power failure, a converter that converts AC power supplied from the AC power supply into DC power to supply resultant DC power to a DC link portion while the AC power supply is normal, and that supplies DC power supplied from a battery through the switch to the DC link portion during power failure, an inverter that converts DC power from the DC link portion into AC power to supply resultant AC power to a load, and a chopper circuit that allows DC power from the DC link portion to be stored in the battery while the AC power supply is normal.

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique

Abrégé

Provided is a tension control device capable of suppressing a speed overshoot of rolling stock after exiting a final rolling stand of a finishing mill, to improve the accuracy of a stopping position of a tail end of the rewound rolling stock. The tension control device controls the tension of the rolling stock when the rolling stock that has exited the final rolling stand of the finishing mill is being wound onto a mandrel via a pinch roll. The tension control device is configured to be capable of switching a rotational drive of the mandrel between speed control and current control. The tension control device comprises a selecting means for comparing a torque required for speed control and a torque required for current control and selecting the smaller torque as a final torque, and an integrator for integrating an output of the speed control, and is additionally provided with a limit setting unit for setting a limit corresponding to a tension reference for the integrator, the configuration being such that the output of the integrator does not become saturated.

Classes IPC  ?

• B21C 47/02 - Enroulement ou bobinage

Abrégé

A bidirectional chopper (2) selectively performs a charging operation for storing DC power received from DC bus lines (L1, L2) into an electricity storage device (7) and a discharging operation for outputting the DC power of the electricity storage device (7) to the DC bus lines (L1, L2). An inverter (3) converts the DC power received from the DC bus lines (L1, L2) into AC power to supply the AC power to a load (8) and converts a regenerative power generated by the load (8) into DC power to output the DC power to the DC bus lines (L1, L2). In the electricity storage device (7), a SOC reference value is set that is smaller than the upper limit value of an SOC usable range and larger than the lower limit value of the usable range. When an AC power supply (6) is healthy, a control device (5) controls the bidirectional chopper (2) so that the SOC of the electricity storage device (7) becomes the SOC reference value. When the AC power supply (6) is failed, the control device (5) controls, on the basis of the usable range, the discharging operation corresponding to the powering operation of the load (8) and the charging operation corresponding to the regenerative operation of the load (8).

Classes IPC  ?

• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• B66B 1/34 - Systèmes de commande des ascenseurs en général - Détails
• B66B 5/02 - Utilisation de dispositifs de vérification, de rectification, de mauvais fonctionnement ou de sécurité des ascenseurs réagissant à des conditions de fonctionnement anormales

Abrégé

A control device according to one embodiment is for a power conversion device combining a converter for converting AC power to DC power and an inverter for converting DC power to AC power. The control device comprises a DC voltage controller, a compensation calculator, a controller, and a stabilization controller. The DC voltage controller performs a proportional operation and an integral operation on a DC voltage deviation, which is the deviation between a DC voltage detection value related to DC voltage on the DC side of the converter and a DC voltage reference on the DC side, and generates an output value using the results of the proportional operation and the integral operation. The compensation calculator adjusts a compensation amount for suppressing fluctuation of the DC voltage by using a request output value of the inverter. The control unit controls the conversion amount of the converter using a calculation result that is based on the generated output value and the adjusted compensation amount. When a predetermined condition related to the size of the DC voltage deviation and the result of the integral operation is satisfied, the stabilization controller changes the result of the integral operation to a value smaller than the absolute value of the result of the integral operation.

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

A drive device according to a first aspect of an embodiment comprises an impedance adjusting unit. The impedance adjusting unit uses a current value flowing through elements of a power converter and adjusts the impedance of a path for sending a control signal from a drive unit of the elements to a semiconductor switching element among the elements.

Classes IPC  ?

• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques

Abrégé

A frequency stabilization system according to one aspect of the present invention comprises: a power conversion unit that converts, into AC power, DC power output by a solar panel and/or a storage battery, and outputs the AC power to a power grid; a bidirectional DC converter that is connected in series to the storage battery, and controls, on the basis of an effective power command value, the charging and discharging of the power conversion unit by the storage battery; a grid frequency detection unit that detects the grid frequency of AC power output to the power grid by the power conversion unit; a required power calculation unit that calculates the required power for the power grid on the basis of the detected grid frequency; a command value calculation unit that calculates the effective power command value for the bidirectional DC converter on the basis of the calculated required power; and an output control unit that, on the basis of the calculated effective power command value, controls charging and discharging outputs to the power conversion unit of the storage battery by the bidirectional DC converter.

Classes IPC  ?

• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

First and second bases (21) are positioned opposite each other. An inverter (23) is mounted on one of the first and second bases (21). A converter (24) is mounted on the first base (21a). A chopper (25) is mounted on the second base (21b). At least a portion of fins (22) thermally connected to the converter (24) via the first base (21a) is thermally connected to the chopper (25) via the second base (21b).

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

In the present invention, an electric power converter comprises a housing, and first and second three-phase block semiconductor units of identical structure within the housing, wherein: each of the first and second three-phase block semiconductor units has a cooler, a semiconductor, a gate driver substrate, a first AC terminal, a second AC terminal, and a third AC terminal; the first AC terminals, the second AC terminals, and the third AC terminals are positioned facing each other within the housing so that the coolers are arranged on the outer side within the housing and so that the semiconductors, the gate driver substrates, the first AC terminals, the second AC terminals, and the third AC terminals are arranged on the inner side within the housing; the first three-phase block semiconductor unit is configured so that, due to a signal distribution substrate provided to the electric power converter, a U-phase signal is transmitted to the first AC terminal, a V-phase signal is transmitted to the second AC terminal, and a W-phase signal is transmitted to the third AC terminal; and the second three-phase block semiconductor unit is configured so that, due to the signal distribution substrate provided to the electric power converter, wiring is switched so that a U phase and a W phase are reversed, a W-phase signal being transmitted to the first AC terminal, a V-phase signal being transmitted to the second AC terminal, and a U-phase signal being transmitted to the third AC terminal.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/493 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande les convertisseurs statiques étant agencés pour le fonctionnement en parallèle

Abrégé

The purpose of the present disclosure is to provide an ultrasonic atomization device that can precisely detect the liquid surface level of a raw material solution. In an ultrasonic atomization device (100) of the present disclosure, a raw material solution separation pipe (20) is provided to a side surface of an atomization container (1). The raw material solution separation pipe (20) has a raw material solution accommodation space (22) that is for accommodating a raw material solution (15) and a raw material solution passage port (20B) that is for performing supply and discharge of the raw material solution (15) between a raw material solution container and the raw material solution separation pipe (20). A liquid surface detector (40) is provided in proximity to the raw material solution separation pipe (20). The liquid surface detector (40) detects the level of the liquid surface (15A) of the raw material solution (15) in the raw material solution accommodation space (22) and outputs a liquid surface detection signal (S40) indicating the detected level of the liquid surface (15A).

Classes IPC  ?

• B05B 17/06 - Appareils de pulvérisation ou d'atomisation de liquides ou d'autres matériaux fluides, non couverts par les autres groupes de la présente sous-classe opérant suivant des procédés particuliers utilisant des vibrations ultrasonores

Abrégé

A power conversion device includes a first relay unit, one or more second relay units, and a safety control unit. The first relay unit includes a first logic processing unit that transmits a response signal supplied from a first power conversion unit and a response signal of a downstream side of its first relay unit to an upstream side. Each of the one or more second relay units includes a second logic processing unit that transmits a response signal transmitted from one second power conversion unit among the one or more second power conversion units and a response signal transmitted from a downstream side of the one second relay unit to an upstream side of the one second relay unit. The safety control unit is disposed on an upstream side of the first logic processing unit and configured to perform functional safety control of the first power conversion unit and the one or more second power conversion units by transmitting a control command for functional safety control to the first relay unit and thus monitor a state of the functional safety control of the first power conversion unit and states of the functional safety control of the one or more second power conversion units.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs

Abrégé

The purpose of the present disclosure is to provide an active gas generation device having a structure for preventing dielectric breakdown of a dielectric film. In an electrode unit (51) of an active gas generation device (71) according to the present disclosure, a dielectric film support member (10) has a support surface (10F) that supports a high voltage–side dielectric film (2) from below. The lower surface of a dielectric film suppression member (11) provided above a ground-side dielectric film (3) has: a dielectric substance contact area (112) that overlaps a peripheral area of the high voltage–side dielectric film (2) and the support surface (10F) of the dielectric film support member (10) in a plan view; and a dielectric substance non-contact area (111) that overlaps an intermediate area of the high voltage–side dielectric film (2) in a plan view. The high voltage–side dielectric film (2) is suppressed from the dielectric substance contact area (112) thereabove by the dielectric film suppression member (11) that receives the pressing force of a plurality of suppression assist members (32).

Classes IPC  ?

• H05H 1/24 - Production du plasma

Abrégé

A power supply system for an independent system includes a plurality of power supply devices, a plurality of power conversion devices, and a control device, the plurality of power conversion devices are connected in parallel to the independent system, the plurality of power conversion devices are voltage source voltage-controlled, the plurality of power conversion devices convert power supplied from the plurality of power supply devices into alternating current power corresponding to the independent system, the plurality of power conversion devices supply the alternating current power after the conversion to the independent system, the control device controls conversion operations of the power of the plurality of power conversion devices, the control device calculates a plurality of active power command values of the plurality of power conversion devices according to active power required by the independent system, and calculates a plurality of reactive power command values.

Classes IPC  ?

• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 7/493 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande les convertisseurs statiques étant agencés pour le fonctionnement en parallèle

Abrégé

A phase angle detection system according to one aspect of an embodiment of the present invention detects the phase angle of an electric motor in a drive system equipped with a transmission unit that changes the rotation speed of the electric motor. This phase angle detection system comprises: a first sensor; a second sensor; and an arithmetic processing unit. The first sensor outputs a first signal for detecting at least a specific phase angle of a rotor of the electric motor. The second sensor outputs a second signal that enables the detection of the amount of rotation of an output shaft of the transmission unit. In the arithmetic processing unit, the amount of deviation included in a detection result of the specific phase angle from the first signal is predefined for each rotational direction of the electric motor, and the deviation amount of the first signal determined by the rotational direction of the electric motor, the detection result of the first signal, and the second signal are used to calculate an estimated value of the absolute angle of the rotor of the electric motor.

Classes IPC  ?

• H02P 6/16 - Dispositions de circuits pour détecter la position

Abrégé

A drive system according to an aspect of the embodiment includes a first phase estimation unit, a second phase estimation unit, a state determination unit, and a drive control unit. The first phase estimation unit generates a first phase obtained by estimating a phase of a rotor on the basis of an initial phase at a startup stage of the synchronous motor. The second phase estimation unit generates a second phase obtained by estimating the phase of the rotating rotor on the basis of the operation state of the synchronous motor. The state determination unit determines the operation state of the synchronous motor. The drive control unit controls the driving of the synchronous motor by using any one of the first phase and the second phase according to the determination result of the operation state of the synchronous motor. The first phase estimation unit corrects the first phase by using the detection result of the rotor position detected from the start of the startup procedure of the synchronous motor to the successful startup.

Classes IPC  ?

• H02P 21/18 - Estimation de la position ou de la vitesse
• H02P 21/00 - Dispositions ou procédés pour la commande de machines électriques par commande par vecteur, p.ex. par commande de l’orientation du champ
• H02P 21/34 - Dispositions pour le démarrage
• H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs