Disclosed is a control circuit for control of a semiconductor switching device, such as an IGBT. The control circuit comprising a first feedback path between a first electrode and a control electrode of said semiconductor switching device which has a capacitance. The circuit is operable such that the capacitance in the first feedback path is dependent on the voltage level at said first electrode. In another embodiment the control circuit is operable such that a feedback signal begins to flow in the first feedback path immediately as the semiconductor switching device begins switching off, thereby causing a control action on the semiconductor switching device.
H03K 17/082 - Modifications pour protéger le circuit de commutation contre la surintensité ou la surtension par réaction du circuit de sortie vers le circuit de commande
H03K 17/16 - Modifications pour éliminer les tensions ou courants parasites
2.
POWER CONVERTER WITH DIGITAL CURRENT CONTROL CIRCUIT
A current control circuit (208) for a power converter (200) to control the switching thereof, wherein the current control circuit comprises a digital controller (210) using a logical input signal (226) to produce a logical control signal (212) with a fixed fundamental frequency for the power converter.
An uninterruptible power supply (UPS) system (100) comprises a plurality of UPS units (UPS-1, UPS-2) connected in parallel. Each UPS unit comprises a power converter (124) for supplying a share (i load l, i_load_2) of a total load current (i_tot). The total load is shared automatically between UPS units of power ratings, in a proportionate manner. A controller 130 of each converter is arranged to establish real-time feedback control of a current supplied by the power converter. An exchange current (i_exch) for each converter represents an imbalance between an output current of the converter in question and output currents of the parallel converters. Exchange current sensing circuits of the parallel-connected UPS units are connected together. The controller steers the exchange current of each converter toward a value (i_ exc_c) that is a non-zero proportion of a current (i_mut) sensed within the converter. Said non-zero proportion is calculated such that the exchange current will be steered towards a positive value in the case of a converter with higher than average nominal power rating and toward a negative value in the case of a converter with lower than average power rating.
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
4.
CALIBRATION OF CURRENT SENSORS IN PARALLEL POWER CONVERTERS
An uninterruptible power supply (UPS) system (100) comprises a plurality of UPS units (UPS-1, UPS-2) connected in parallel. The controllers (130) of the units are programmed to implement a voltage calibration procedure and a current calibration procedure, in order that measurements of voltage and current made by sensors within the different units will agree. In the current calibration procedure, the load is disconnected (302) while one of the units is selected as a master and operates in a voltage control mode (VCM) (Steps 304-308). Each other unit is selected in turn and operated in a current control mode (310, 312). Current measurements made in the master unit are communicated (314) via a data bus to the selected unit and compared (316) with measurements made in the unit itself. The unit adapts its current sensing gains to match the master unit.
G01R 31/42 - Tests d'alimentation d'alimentations en courant alternatif
G01R 35/00 - Test ou étalonnage des appareils couverts par les autres groupes de la présente sous-classe
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
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
5.
METHODS AND APPARATUS FOR CONTROLLING POWER SWITCHES VIA A DIGITAL COMMUNICATION BUS
Methods and apparatus are provided that can be used to control a set of power switches operating as a power converter. The method comprises providing a set of power switches and at least one switch driver, each power switch being operable to connect and disconnect one of a set of input power line to an output power line, each switch driver setting the state(s) of an associated power switch or switches; generating by a controller a set of switch commands, each command indicating a desired state of a respective one of said power switches at a moment in time; sending each switch command from the controller to a driver module containing the switch driver associated with the respective power switch; receiving at each driver module switch commands for its associated power switch(es) and causing each switch driver to set the state(s) of the appropriate power switch(es) accordingly; wherein the step of sending said switch commands comprises multiplexing commands for at least a subset of said switches into a series of multi-bit command frames and transmitting said command frames on a serial communication channel, and wherein the step of receiving said switch commands comprises receiving said multi-bit command frames from said communication channel and extracting individual switch commands therefrom. The method and apparatus can be used for example in a UPS system.
H02M 1/084 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques utilisant un circuit de commande commun à plusieurs phases d'un système polyphasé
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
6.
CONVERTER CONTROLLER WITH HALF BRIDGE ADAPTIVE DEAD TIME CIRCUIT AND METHOD
The present disclosure relates to a controller, a circuit and method for controlling a power converter using pulse width modulation (PWM). At least one logic block (13, 15, 16) of the controller is configured to re¬ move a command (4) which is configured to control the other power semiconductor switch (2) in a half-bridge (1,2) so that the other power semiconductor switch (2) remains in a non-conductive state while an antiparallel diode (6) allows an electric current (5) to pass in one direction, called the diode's forward direction, while blocking current in the opposite direction. In case the diode (6) is conducting instead of the other power semiconductor switch during the duration of the state of the command, the switching command (4) for the latter is omitted. The controller is further configured to modify the dead time interval (Tdead) between switching from the power semiconductor switch (3) to another power semiconductor switch (4) or vice versa in order to avoid a discontinuity in the transfer function (25).
A ventilation system for a fuel cell power module is provided. The ventilation system includes a ventilation enclosure for evacuating fluids from the fuel cell power module, the ventilation enclosure having an air inlet for providing ingress of air to the enclosure. The ventilation system further concludes a ventilation shaft in fluid communication with the ventilation enclosure and an evacuation pump arranged to exhaust fluid from the ventilation enclosure to a desired location.
An air pressure differential sensing system includes a conduit defining an air passage through which air flows upon application of an air pressure differential across different regions of the air passage, a flap pivotally connected to the conduit, and a sensing device mounted proximate to the air passage and separate from the flap. The flap is configured to move about a pivotal axis in response to the air flowing through the air passage. The sensing device is configured to sense an angular position of the flap about the pivotal axis, the angular position of the flap being a function of the air pressure differential.
G01F 1/28 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement par débitmètre à force d'entraînement, p. ex. du type à palette ou à poussée
A system for cooling rack mounted equipment includes: a rack configured to house rack mounted equipment, the rack providing a front port bordered by a top and two sides; and a cold-air duct separable from and attached to the rack about the top and two sides, the duct being configured to be in fluid communication with a region adjacent to the duct to receive air from the region, the duct includes: a front member; side members coupled to the front member; and an end member configured to selectively allow the passage of air through the end component from the region into the duct; where the duct is attached to the rack to form a substantially airtight seal between the rack and the duct.
F25D 17/08 - Dispositions pour la circulation des fluides de refroidissementDispositions pour la circulation de gaz, p. ex. d'air, dans les enceintes refroidies pour la circulation de gaz, p. ex. convection naturelle par circulation d'air forcée en utilisant des conduits
A system and method for evaluating equipment in a data center, the equipment including a plurality of equipment racks, and at least one cooling provider. In one aspect, a method includes receiving data regarding each of the plurality of equipment racks and the at least one cooling provider, the data including a layout of the equipment racks and the at least one cooling provider, and a power draw value for each of the equipment racks, storing the received data, determining air flow between the at least one cooling provider and each of the equipment racks, determining inlet and exit air temperature for the at least one cooling provider based on the layout, the power draw and the airflow, for each equipment rack, determining inlet and exit air temperature based on the layout, the power draw and the airflow, and displaying an indication of the inlet and exit temperature for each of the plurality of equipment racks and the at least one cooler. In the method, determining the inlet and exit temperature of each of the equipment racks and the at least one cooling provider includes establishing a set of S coupled equations, with S equal to a number of temperature values to be determined, and solving the S coupled equations.
A power distribution apparatus includes a reader, one or more electrical outlets, and one or more antennas mounted in proximate relation to one or more of the electrical outlets. An asset includes a power cord having a transponder attached thereto, and the power cord may be coupled to one of the electrical outlets. A method for identifying and managing an asset includes mounting the power distribution apparatus in an equipment rack, reading, by the reader through one or more of the antennas, identification data contained in the transponder, communicating information including the identification data through a network to a controller, and determining, by the controller, a control action based on the information.
According to one aspect, embodiments of the invention provide a system for monitoring at least one circuit branch coupled to a power line, the system comprising at least one first module comprising a Current Transformer (CT) configured to be coupled to the at least one circuit branch and to produce a reference signal having a level related to a current level of the at least one circuit branch, a rectifier coupled to the CT and configured to produce a rectified reference signal, a capacitor coupled to the rectifier, and a first microcontroller coupled to the capacitor and the rectifier, wherein, the capacitor is configured to store energy from the rectified reference signal, and wherein, the first microcontroller is configured to be powered by the energy stored in the capacitor and to sample the rectified reference signal to determine the current level of the at least one circuit branch.
A method and an apparatus for controlling distribution of power. The apparatus is used for controlling application of power to a plurality of devices including at least one master device and at least one controlled device. The apparatus includes: a power inlet constructed and arranged to receive power from a power source; a plurality of power outlets including at least one master power outlet (12M) and at least one controlled power outlet (12S); and means for generating a power profile of the at least one master device electrically connected to the master power outlet, determining a characteristic of a stand-by power consumption level of the at least one master device and controlling a supply of power from the power inlet to the at least one controlled power outlet in response to a comparison of a characteristic of power delivered to the at least one master device with the characteristic of the stand-by power consumption level.
H01R 13/66 - Association structurelle avec des composants électriques incorporés
H02H 3/24 - 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 une baisse ou un manque de tension
H02H 3/42 - 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 au produit de la tension et du courant
A 3-phase uninterruptible power supply (UPS) including first, second, and third AC/DC converters, a DC/DC converter, and at least one DC/AC converter coupled to multiple electrical buses. The first, second, and third AC/DC converters each being configured to receive AC power and to provide multiple DC signals to the multiple electrical buses. The DC/DC converter being configured to convert DC voltages present on the multiple electrical buses to a DC voltage that can be used to charge a battery. The DC/AC converter being configured to receive DC power from the multiple electrical buses and to provide an AC output. The 3-phase UPS being configured such that when suitable AC power is provided to the AC/DC converters, the DC/DC converter is configured to charge a battery, and when suitable AC power is not provided to the AC/DC converters, the DC/DC converter is configured to provide DC power to the multiple electrical buses using power provided by the battery.
Systems and methods of operating uninterruptible power supplies in parallel in a power distribution system to provide power to a load are provided. At least one uninterruptible power supply inverter provides power to the load. A communication interface provides a measured value of at least one of inverter output current of a first uninterruptible power supply and a measured value of the load current to a second uninterruptible power supply, and receives a measured value of at least one of inverter output current of the second uninterruptible power supply and the load current. A controller controls the uninterruptible power supplies to operate in one of a master state and a slave state. In the master state the uninterruptible power supply is configured to control the voltage to the load, and in the slave state the uninterruptible power supply is configured to determine a reference output current value based at least in part on at least one of the measured value of inverter output current of the second uninterruptible power supply and the measured value of the load current. The uninterruptible power supply in the slave state drives its inverter output current toward the reference output current value to provide its share of the load current.
H02J 9/00 - Circuits pour alimentation de puissance de secours ou de réserve, p. ex. pour éclairage de secours
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
An airflow detecting device includes at least one pivot rod, a first vane portion hingedly secured to the at least one pivot rod and a second vane portion hingedly secured to the at least one pivot rod. The airflow detecting device further includes a first sensor assembly coupled to the first vane portion and the second vane portion. The first sensor assembly generates a signal when the one of the first vane portion and the second vane portion is moved relative to the other of the second vane portion and the first vane portion when effected by airflow. The airflow detecting device further includes a control module secured to the at least one pivot rod and coupled to the first sensor assembly to receive the signal from the first sensor assembly. The control module is configured to determine the direction and the amount of airflow based on the signal from the first sensor assembly. Other embodiments of airflow detecting devices are further disclosed.
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
G01P 5/02 - Mesure de la vitesse des fluides, p. ex. d'un courant atmosphériqueMesure de la vitesse de corps, p. ex. navires, aéronefs, par rapport à des fluides en mesurant les forces exercées par le fluide sur des corps solides, p. ex. anémomètre
G01P 5/04 - Mesure de la vitesse des fluides, p. ex. d'un courant atmosphériqueMesure de la vitesse de corps, p. ex. navires, aéronefs, par rapport à des fluides en mesurant les forces exercées par le fluide sur des corps solides, p. ex. anémomètre en utilisant la déflexion par des plaques en chicane
G01P 13/02 - Indication de la direction uniquement, p. ex. par une girouette
A cooling container (700) comprises a container housing with a chilled water storage tank including a first interface for receiving chilled water. The chilled water tank has a plurality of straight pipes (710, 810) joined by elbows connections (720, 820, 825) to provide a folded path, the full path length being greater than the length of the container housing, and a second interface for outputting the chilled water. A number of interfaces within the container housing are configured to receive a chiller module or a free cool unit.
An asset identification and tracking system includes a plurality of antennas each constructed and arranged to be mounted to one of a plurality of rack positions within an equipment rack, a receiver coupled to each of the antennas, and an antenna selector coupled to each of the antennas for selectively enabling communication between one of the antennas and the receiver. The system may further include a controller coupled to the receiver and to the antenna selector. The system may further include a data center manager coupled to the controller for identifying and tracking an asset. Each of the plurality of antennas may be configured to receive a signal emitted by a RFH) tag attached to an asset mounted within the equipment rack. The receiver may include an RFID reader.
A front-end converter in an uninterruptible power supply system includes: a boost circuit having first and second inputs, and positive, negative, and neutral output nodes, and being configured to provide a positive capacitor voltage between the positive and neutral nodes and to provide a negative capacitor voltage between the negative and neutral nodes; an inductor coupled to the first input; first AC and neutral AC inputs to receive AC power; a battery; a first device to selectively couple the inductor to the first AC input or a positive port of the battery; and a second device to selectively couple a negative port of the battery to the second input; where the inductor is shared between an online mode of the converter and an on-battery mode of the converter and the battery is coupled through the inductor to the first input during the on-battery mode.
H02J 9/04 - 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
H02M 7/155 - 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 utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs
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
An electrical ganged-outlet apparatus (100) includes a unitary outlet body (120) including a plurality of electrical outlets (112) and a back surface. Each of the electrical outlets (112) has at least a first (314) and a second (316) receptacle contact element, and a line terminal (320). The line terminal (320) is electrically connected to the first receptacle contact element (314) and extends from the back surface. The outlet body (120) has at least one neutral bus bar (322) disposed against the back surface, and the neutral bus bar (322) is electrically connected to the second receptacle contact element (316).
H01R 25/00 - Pièces de couplage adaptées à la coopération simultanée avec plusieurs pièces complémentaires identiques, p. ex. pour la distribution d'énergie à plusieurs circuits
H01R 13/66 - Association structurelle avec des composants électriques incorporés
H01R 25/16 - Rails ou barres omnibus pourvus de plusieurs points de connexion pour pièces complémentaires
A switch circuit and method for converting a hard switch into a soft switch. In one example, the circuit includes a first switch (510) having a first node and a second node, and a switch control circuit coupled in parallel with the first switch (510) between the first and second nodes. The switch control circuit includes a series resonant circuit including a capacitor (560) and an inductor (550) coupled together in series, a second switch coupled in parallel with the series resonant circuit, a third switch (530) coupled in series between the first node and the series resonant circuit, and a first diode (570) coupled between the series resonant circuit and the second node, an negative terminal of the first diode being coupled to the second node.
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
H03K 17/13 - Modifications pour commuter lors du passage par zéro
H03K 17/16 - Modifications pour éliminer les tensions ou courants parasites
Methods and system for consolidating alarms using a data center monitoring appliance are provided. The method includes receiving at least one alarm from an physical infrastructure device via the network, determining that the at least one alarm is subject to a consolidation filter, the consolidation filter specifying characteristics of a consolidated alarm and generating the consolidated alarm according to the characteristics specified in the consolidation filter. The system includes a network interface, a memory and a controller coupled to the network interface and the memory and configured to receive at least one alarm from an physical infrastructure device via the network interface, determine that the at least one alarm is subject to a consolidation filter, the consolidation filter specifying characteristics of a consolidated alarm and generate the consolidated alarm according to the characteristics specified in the consolidation filter.
According to one aspect, embodiments of the invention provide a method of monitoring an electrical connection, the method comprising monitoring a temperature of the electrical connection, monitoring a level of current passing through the electrical connection, and determining, in response to monitoring temperature and current, whether the temperature of the electrical connection exceeds a temperature threshold associated with the level of current passing through the electrical connection.
According to one aspect, embodiments of the invention provide a method of monitoring an electrical connection, the method comprising monitoring a temperature of the electrical connection, monitoring a level of current passing through the electrical connection, and determining, in response to monitoring temperature and current, whether the temperature of the electrical connection exceeds a temperature threshold associated with the level of current passing through the electrical connection.
A power supply system includes an AC power line with an uninterruptible power supply (UPS) device coupled to receive power from the AC power line. The UPS includes control circuitry that couples power conversion circuitry of the UPS to the AC power line when the available AC power is acceptable. The power supply system also includes a second UPS device coupled to receive power from the AC power line. The second UPS includes a timer delay, such that the control circuitry is configured to couple power conversion circuitry to the AC power line when the available AC power is acceptable, and upon expiration of the timer.
A method of installing a power distribution system in a facility includes acts of: obtaining a power distribution unit including at least one rack mounted power distribution unit, the power distribution unit including an electrical connection having an electrical bus configured to directly connect to a riser of a power bus way; installing the power busway from a terminus located at the output of the UPS to the electrical connection at the power distribution unit; and directly connecting the power busway to the output of the UPS with a busbar-to-busbar connection between the output of the UPS and the terminus of the busway.
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
A computer implemented method and a data center management appliance for simulating noπstandard operation of an element of a data center is provided. The method includes acts of determining a one data center resource affected by a data center element, selecting a simulator from a plurality of simulators based on the data center resource and the data center element and generating a impact analysis of the nonstandard operation of the data center element using the simulator. The data center management appliance includes a network interface, a memory and a controller coupled to the network interface and the memory. The controller is configured to determine a data center resource affected by a data center element, select a simulator from a plurality of simulators based on the data center resource and the data center element and generate a impact analysis of nonstandard operation of the data center element using the first simulator.
Systems and methods of operating a voltage converter are provided. The converter includes an output inductor and an output capacitor coupled to a rectifier circuit. The converter also includes a clamp circuit having a clamping diode and a clamping capacitor coupled in series, with the serial combination in parallel with the output inductor. The clamp circuit can also include a recovery inductor coupled to the output capacitor, and a switch configured to selectively couple and decouple the recovery inductor in parallel with the clamping capacitor.
H02M 7/06 - 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 sans électrode de commande ou des dispositifs à semi-conducteurs sans éléctrode de commande
29.
APPARATUS AND METHOD FOR SCALABLE POWER DISTRIBUTION
In one aspect, the invention provides a system for power distribution. According to some embodiments, the system includes a rack mountable power distribution unit including a housing having a first end and a second end, the housing also including an outer wall defining a cavity within the housing, and fastening elements configured to allow the housing to be mounted within an electrical equipment rack. In accordance with these embodiments, the outer wall of the housing includes an opening extending linearly between the first end and the second end of the housing and a plurality of electrical conductors located within the cavity and oriented linearly between the first end and the second end. In accordance with further embodiments, the system includes a tap module including a plurality of contacts extending therefrom wherein each of the plurality of contacts is configured to be inserted into the opening before engaging one of the plurality of electrical conductors within the cavity, respectively.
H01R 25/14 - Rails ou barres omnibus réalisés de telle sorte que les pièces complémentaires puissent leur être connectées en tout point de leur longueur
30.
SYSTEM AND METHOD FOR OPTIMIZING POWER LOADS IN A POWER DISTRIBUTION UNIT
A method of optimizing power loads of a power strip is disclosed. The power strip is of the type having single or three phase power input, a plurality of circuit breakers, and a plurality of outlets. The arrangement is such that at least one circuit breaker is associated with at least one outlet. The method includes: obtaining real-time current measurements for each phase of the single or three phase power input of the power strip; obtaining real-time current measurements for each circuit breaker of the plurality of circuit breakers of the power strip; logging the real¬ time current measurements for each phase of the single or three phase power input and for each circuit breaker of the plurality of circuit breakers; and analyzing the real-time current measurements of the single or three phase power input and the plurality of circuit breakers to determine a preferential order of outlets in which to apply a new load.
H02J 1/14 - Équilibrage de la charge dans un réseau
H02J 3/14 - 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 interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
G06F 1/26 - Alimentation en énergie électrique, p. ex. régulation à cet effet
Systems and methods are provided for an uninterruptable power supply having a positive DC bus, a neutral DC bus, and a negative DC bus. The uninterruptible power supply includes a battery charger circuit having an inductor, a first charger output, and a second charger output. A first switch connected to a first end of the inductor is configured to couple the positive DC bus with the first charger output. A second switch connected to a second end of the inductor is configured to couple the negative DC bus with the inductor. The neutral DC bus can be coupled to the second charger output. The battery charger circuit can be configured to draw power from at least one of the positive DC bus and the negative DC bus to charge a battery coupled to the first charger output and the second charger output.
A cable trough includes a tray (22) having a tray portion (24) extending along a generally horizontal plane with two opposite side edges (30, 32), a first side wall portion (26) extending along one side edge of the tray portion on a plane generally perpendicular to the plane of the tray portion, and a second side wall portion (28) extending along the other side edge of the tray portion on a plane generally perpendicular to the plane of the tray portion. The cable trough further includes a first side wall (34) having at least one first attachment configuration constructed and arranged to secure the first side wall to the first side wall portion of the tray, and a second side wall (36) having at least one second attachment configuration constructed and arranged to secure the second side wall to the second side wall portion of the tray. Various cable trough systems and methods are further disclosed.
G06F 1/18 - Installation ou distribution d'énergie
H02G 3/04 - Tubes ou conduits de protection, p. ex. échelles à câbles ou goulottes de câblage
A47B 21/06 - Tables ou bureaux spécialement adaptés aux postes de travail informatiques individuels, p. ex. pour le traitement de texte ou pour la saisie manuelle des donnéesTables ou bureaux spécialement adaptés pour la dactylographieDispositifs auxiliaires pour la fixation à de telles tables ou à de tels bureaux caractérisés par des moyens pour fixer, maintenir ou dissimuler des câbles
A solar powered apparatus that includes a battery, at least one photovoltaic cell (which may be part of a solar module comprising multiple photovoltaic cells), and a DC-capable AC appliance, such as a compact fluorescent light. The solar powered apparatus may also include a first DC to DC converter that receives a first electrical signal from the at least one photovoltaic cell and provides a charging signal to the battery, and a second DC to DC converter that receives a second electrical signal from the battery and provides a DC power signal to the DC-capable AC appliance.
H02N 6/00 - Générateurs dans lesquels le rayonnement lumineux est directement converti en énergie électrique (cellules solaires ou ensembles de cellules solaires H01L 25/00, H01L 31/00)
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
A system and method for providing surge protection. The system includes a surge protector (100) for protecting a load (104) coupled to a power source (102). The surge protector (100) includes an input having a first node, a second node, and a third node for respectively coupling to line, neutral, and ground connections of the power source (102), an output having a fourth node, a fifth node, and a sixth node for respectively coupling to line, neutral, and ground connections of the load (104), a first voltage limiting circuit (110) coupled between the fourth node and the fifth node, a first inductor (116) coupled between the first node and the fourth node, and a second voltage limiting circuit (106) coupled between the first node and the second node. The system and method provide protection for sensitive circuits against power surges on power lines.
H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
H02H 9/06 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension utilisant des éclateurs à étincelles
35.
TOOL-LESS INSTALLATION SYSTEM AND METHOD OF U-MOUNTED DEVICES
A device is configured to be secured within an equipment rack of the type having two spaced-apart mounting flanges, with each flange having a plurality of openings formed therein spaced-apart from one another a predetermined distance. The device includes an elongated body having two, opposite ends and two attachment configurations, one for each end of the elongated body. Each attachment configuration has at least one retention element to be inserted within the openings of the mounting flanges. At least one attachment configuration has a plunger pin configured to retain the device to the mounting rails. The attachment configuration is constructed and arranged to facilitate tool-less installation and removal of the device with the mounting rails. Other embodiments of the device and a method of securing the device to an equipment rack are further disclosed.
Without battery cell balancing, voltages of multiple series-connected battery cells may quickly become out of balance, which causes some cells of the battery to deteriorate faster than others, and reduces the life cycle of the battery. Embodiments of the present invention address this problem by providing a system for balanced charging of multiple series-connected battery cells. The system includes resistors that are selectably and electrically coupled in parallel with respective battery cells via activation and deactivation of respective switches. The system also includes a control unit that is configured to determine a battery cell having a lowest voltage among the battery cells, and to activate and deactivate the switches as a function of differences in voltages between the voltage of the lowest battery cell and voltages of each of the other battery cells, thus, providing balanced charging of the multiple series-connected battery cells.
According to one aspect, embodiments of the invention provide power converter circuitry including an input including a plurality of input lines each configured to be coupled to a phase of a multiphase AC power source having a sinusoidal waveform, a plurality of DC buses including a first positive DC bus having a first nominal DC voltage, a second positive DC bus having a second nominal DC voltage, a first negative DC bus having a third nominal DC voltage and a second negative DC bus having a fourth nominal DC voltage; a first power converter coupled to the input and configured to supply power from the multiphase AC power source to the plurality of DC buses during a first positive region of the sinusoidal waveform and a first negative region of the sinusoidal waveform; and a second power converter coupled to the input and configured to supply power from the multiphase AC power source to at least some of the plurality of DC buses during a second positive region of the sinusoidal waveform and a second negative region of the sinusoidal waveform.
H02M 7/217 - 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 utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
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
Methods and apparatuses supporting an electrical connection in a manner that eliminates or reduces a danger of electrical sparking are disclosed. A sparkless electrical connector has a conductor, configured to provide flow of electricity between an electrical source and a load, and a resistive element, operatively coupled to the conductor, to resist flow of electricity during a state of partial connection with the electrical source or the load. The resistive element may be not in contact with a terminal of the source or load during a state of full connection. The resistive element may be a coating of an anodized material on a pin of the conductor. The coating provides a resistance sufficient to prevent sparking during connection of the conductor and at least one of the electrical source and the load. Techniques disclosed herein benefit users and manufacturers in the areas of safety, cost, simplicity, and reliability.
A system for cooling a medium includes a line having coolant flowing therein, and a sub-cooling unit in fluid communication with the line. The sub-cooling unit receives a portion of the coolant diverted from the line to cool coolant flowing in the line. A method of cooling a medium is further disclosed.
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique
Techniques for power analysis for data centers are disclosed In one particular exemplary embodiment, the techniques may be realized as a method for power analysis for a plurality of computing platform components comprising receiving information associated with a component, retrieving, using a computer processor, electronically stored data associated with the component, estimating power usage of the component based at least in part on the stored data, and outputting an indicator of power usage.
G06F 7/38 - Méthodes ou dispositions pour effectuer des calculs en utilisant exclusivement une représentation numérique codée, p. ex. en utilisant une représentation binaire, ternaire, décimale
Disclosed are methods for charging batteries utilizing a charge balance approach, and charger systems using those methods. In one example, a method for charging a battery includes monitoring an amount of charge released by the battery while in a discharge state, recording the amount of charge released while in the discharge state, applying a voltage which results in current in reverse direction to the battery at a first voltage level for a time sufficient to introduce an amount of charge substantially equal to the recorded amount of charge released by the battery while in the discharge state, and maintaining the battery in a stand-by mode by applying a voltage which results in current in reverse direction to the battery at a second voltage level, the second voltage level being in a range sufficient to prevent self-discharge of the battery and insufficient to induce evaporation of electrolyte in the battery.
Systems and methods for operating an uninterruptable power supply are provided. The uninterruptable power supply may include a rectifier that has a transistor and an inductor. The uninterruptable power supply may also include a controller. A current sensor can be configured to detect inductor current and to provide a detected inductor current value to the controller to generate a current error value based and to generate a pulse width modulation control signal based in part on the current error value. The controller can apply the pulse width modulation control signal to the transistor to adjust a switching frequency of the transistor.
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 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
43.
DUAL COLUMN GANG OUTLETS FOR MINIMIZING INSTALLATION SPACE
A power distribution unit disclosed herein includes a plurality of power outlets arranged in adjacent columns, the first and the second terminals of the power outlets in a first column formed along a first line, the first and the second terminals of the power outlets in a second column formed along a second line, ground terminals of the power outlets in the first column formed along a third line, and ground terminals of the power outlets of the second column formed along a fourth line, wherein the first line, the second line, the third line, and the fourth line are arranged in parallel, and wherein the plurality of power outlets are arranged in one of an arrangement in which the third and fourth lines are positioned between the first and second lines, and an arrangement in which the first and second lines are positioned between the third and fourth lines.
H01R 25/00 - Pièces de couplage adaptées à la coopération simultanée avec plusieurs pièces complémentaires identiques, p. ex. pour la distribution d'énergie à plusieurs circuits
44.
Method and apparatus for installation and removal of overhead cooling equipment
Disclosed is a data center comprising a first row of equipment racks, a second row of equipment racks, a hot aisle defined by a space between the first row of equipment racks and the second row of equipment racks, and a track system above the hot aisle of the data center upon which cooling units may be mounted. Cooling units may be moved along the track system. The track system may include portions of track secured to the top sides of one or more cooling units. Also disclosed is a method for installing a cooling unit above a hot aisle of a data center including a plurality of equipment racks.
Systems and methods for operating an uninterruptable power supply are provided. The uninterruptable power supply may include a rectifier that has a transistor and an inductor. The uninterruptable power supply may also include a controller. A current sensor can be configured to detect inductor current and to provide a detected inductor current value to the controller to generate a current error value based and to generate a pulse width modulation control signal based in part on the current error value. The controller can apply the pulse width modulation control signal to the transistor to adjust a switching frequency of the transistor.
G05F 1/00 - Systèmes automatiques dans lesquels les écarts d'une grandeur électrique par rapport à une ou plusieurs valeurs prédéterminées sont détectés à la sortie et réintroduits dans un dispositif intérieur au système pour ramener la grandeur détectée à sa valeur ou à ses valeurs prédéterminées, c.-à-d. systèmes rétroactifs
46.
Dual column gang outlets for minimizing installation space
A power distribution unit disclosed herein includes a plurality of power outlets arranged in adjacent columns, the first and the second terminals of the power outlets in a first column formed along a first line, the first and the second terminals of the power outlets in a second column formed along a second line, ground terminals of the power outlets in the first column formed along a third line, and ground terminals of the power outlets of the second column formed along a fourth line, wherein the first line, the second line, the third line, and the fourth line are arranged in parallel, and wherein the plurality of power outlets are arranged in one of an arrangement in which the third and fourth lines are positioned between the first and second lines, and an arrangement in which the first and second lines are positioned between the third and fourth lines.
Disclosed is a data center comprising a first row of equipment racks, a second row of equipment racks, a hot aisle defined by a space between the first row of equipment racks and the second row of equipment racks, and a track system above the hot aisle of the data center upon which cooling units may be mounted. Cooling units may be moved along the track system. The track system may include portions of track secured to the top sides of one or more cooling units. Also disclosed is a method for installing a cooling unit above a hot aisle of a data center including a plurality of equipment racks.
A cooling unit, which is configured to contain and cool air between two rows of equipment racks defining a hot aisle, includes a housing configured to be secured mounted on the two rows of equipment racks such that the housing spans the hot aisle, a heat exchanger supported by the housing and coupled to and in fluid communication with a coolant supply and a coolant return, and an air movement assembly supported by the housing and configured to move air over the heat exchanger. Other embodiments of the cooling unit and methods of cooling are further disclosed.
A cooling unit, which is configured to contain and cool air between two rows of equipment racks defining a hot aisle, includes a housing configured to be secured mounted on the two rows of equipment racks such that the housing spans the hot aisle, a heat exchanger supported by the housing and coupled to and in fluid communication with a coolant supply and a coolant return, and an air movement assembly supported by the housing and configured to move air over the heat exchanger. Other embodiments of the cooling unit and methods of cooling are further disclosed.
A modular cooling system configured to treat IT air generated by a data center includes a frame and a plurality of cooling sub-system modules supported by the frame. The plurality of cooling sub-system modules are configured to operate in parallel to achieve total cooling effect or a lesser cooling effect with some level of redundancy within the data center. Each cooling sub-system module includes a housing configured to support cooling equipment, an air-to-air heat exchanger supported by the housing to cool IT air generated by the data center, the air-to-air heat exchanger having at least one tube configured to direct IT from one end of the air-to-air heat exchanger to an opposite end of the air-to-air heat exchanger and configured so that outdoor air circulates around the at least one tube, and a mechanical cooling system supported by the housing. The mechanical cooling system is configured to receive IT air treated by the air-to-air heat exchanger and to provide further cooling to the treated IT air. Other embodiments of the cooling system and methods of cooling are further disclosed.
A pumped refrigerant cooling system for use in a row of equipment racks is configured to contain electronic equipment. The system includes a communication network and a refrigerant distribution unit in fluid communication with a chilled refrigerant supply and a heated refrigerant return. A cooling module is in fluid communication with the refrigerant distribution unit by a supply line and a return line. The cooling module is coupled to the communication network, and includes an evaporator and a fan configured to direct air over the evaporator. A sensor package is configured to monitor temperature and pressure reference points provided in the pumped refrigerant cooling system and the equipment racks. The system further includes a controller forming part of the cooling module and coupled to the communication network and the sensor package. The controller, based on information obtained from the sensor package, is configured to manipulate the flow of refrigerant through the evaporator by controlling the delivery of refrigerant to the evaporator and is configured to manipulate the flow of air over the evaporator by controlling the speed of the fan.
G01M 1/38 - Machines ou dispositifs combinés pour déterminer et corriger à la fois le balourd
G05B 13/00 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé
G05B 15/00 - Systèmes commandés par un calculateur
52.
Method and apparatus for attachment and removal of fans while in operation and without the need for tools
Disclosed is an air containment cooling system for containing air between two rows of equipment racks. The air containment cooling system comprises a canopy assembly configured to enclose a hot aisle defined by two rows of equipment racks and a cooling system embedded within the canopy assembly, the cooling system being configured to cool air disposed within the hot aisle, the cooling system including a heat exchanger, a mounting plate coupled to the canopy assembly, and a fan assembly configured to move air to the heat exchanger, the fan assembly being releasably mounted on the mounting plate. The fan assembly may include a fan unit having a fan and a motor and a mounting ring configured to mount the fan unit thereon. The mounting ring may have at least one mounting post configured to pass through a key slot formed in the mounting plate.
Disclosed is an air containment cooling system for containing air between two rows of equipment racks. The air containment cooling system comprises a canopy assembly configured to enclose a hot aisle defined by two rows of equipment racks and a cooling system embedded within the canopy assembly, the cooling system being configured to cool air disposed within the hot aisle, the cooling system including a heat exchanger, a mounting plate coupled to the canopy assembly, and a fan assembly configured to move air to the heat exchanger, the fan assembly being releasably mounted on the mounting plate. The fan assembly may include a fan unit having a fan and a motor and a mounting ring configured to mount the fan unit thereon. The mounting ring may have at least one mounting post configured to pass through a key slot formed in the mounting plate.
A method of detecting loss of refrigerant within a cooling system of the type having a condenser, a refrigerant receiver in fluid communication with the condenser, a sensor configured to detect a level of refrigerant within the receiver, an evaporator in fluid communication with the receiver, and a pump or compressor in fluid communication with the evaporator and the condenser, includes establishing a baseline measurement of refrigerant mass contained in the receiver with the sensor during certain power loads applied to the cooling system, monitoring a mass of refrigerant in the receiver with the sensor at a certain power load applied to the cooling system, and identifying whether the monitored mass of refrigerant is less than the baseline measurement of refrigerant mass over a predetermined period of time. Systems for detecting loss of refrigerant are further disclosed.
A pumped refrigerant cooling system for use in a row of equipment racks is configured to contain electronic equipment. The system includes a communication network and a refrigerant distribution unit in fluid communication with a chilled refrigerant supply and a heated refrigerant return. A cooling module is in fluid communication with the refrigerant distribution unit by a supply line and a return line. The cooling module is coupled to the communication network, and includes an evaporator and a fan configured to direct air over the evaporator. A sensor package is configured to monitor temperature and pressure reference points provided in the pumped refrigerant cooling system and the equipment racks. The system further includes a controller forming part of the cooling module and coupled to the communication network and the sensor package. The controller, based on information obtained from the sensor package, is configured to manipulate the flow of refrigerant through the evaporator by controlling the delivery of refrigerant to the evaporator and is configured to manipulate the flow of air over the evaporator by controlling the speed of the fan.
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
H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
A heatsink includes a thermally conductive body including a plurality of fins configured to conduct and dissipate heat. The body is configured to receive a circuit board containing heat-producing electrical components along a width of the body. The heatsink further includes a pivot mechanism pivotally coupled to the body and configured and disposed to contact the heat-producing electrical components. The heatsink further includes a bias device connected to the body and the pivot mechanism and configured to change from a first state to a second state to cause the pivot mechanism to rotate relative to the body to move a contact portion of the pivot mechanism toward the body. The heatsink is configured to receive the heat-producing electrical components between the contact portion of the pivot mechanism and the body, and the bias device is configured to bias the contact portion of the pivot mechanism to urge the heat-producing electrical components against the body when the bias device is in the second state.
A system and method for evaluating equipment in a data center, the equipment including a plurality of equipment racks, and at least one cooling provider. In one aspect, a method includes receiving data regarding each of the plurality of equipment racks and the at least one cooling provider, the data including a layout of the equipment racks and the at least one cooling provider, a power draw value for each of the equipment racks, and a maximum cooler capacity value for the at least one cooling provider; storing the received data; determining cooling performance of at least one of the plurality of equipment racks based on the layout; determining a cooling load for the at least one cooler and a difference between the cooling load and the maximum cooler capacity value; for each equipment rack, determining a maximum rack capacity based on the layout and the difference between the cooling load and the maximum cooler capacity value; and displaying an indication of the maximum rack capacity for each equipment rack.
A system and method for evaluating equipment in a data center, the equipment including a plurality of equipment racks, and at least one cooling provider. In one aspect, a method includes receiving data regarding each of the plurality of equipment racks and the at least one cooling provider, the data including a layout of the equipment racks and the at least one cooling provider, a power draw value for each of the equipment racks, and a maximum cooler capacity value for the at least one cooling provider; storing the received data; determining cooling performance of at least one of the plurality of equipment racks based on the layout; determining a cooling load for the at least one cooler and a difference between the cooling load and the maximum cooler capacity value; for each equipment rack, determining a maximum rack capacity based on the layout and the difference between the cooling load and the maximum cooler capacity value; and displaying an indication of the maximum rack capacity for each equipment rack.
A system and method for evaluating equipment in an improper cluster in a data center, the equipment including a plurality of equipment racks, and at least one cooling provider. In one aspect, the method includes receiving data regarding each of the plurality of equipment racks and the -at least one cooling provider, the data including a layout of the improper cluster of equipment racks and the at least one cooling provider, storing the received data, identifying at least one gap 304, 306 in the layout, determining cooling performance of at least one of the plurality of equipment racks based, at least in part, on characteristics of the at least one gap, and displaying the layout of the data center, wherein the layout includes an indication of the cooling performance of the at least one of the plurality of equipment racks.
A system and method for providing a layout of equipment in a data center, the equipment including a plurality of equipment racks, and at least one rack-based cooling provider. In one aspect, the method includes receiving data regarding airflow consumption for each of the plurality of equipment racks and cooling capacity of the at least one cooling provider, storing the received data, determining a layout of the data center, displaying the layout of the data center. In the method determining a layout can include pairing each equipment rack of the plurality of equipment racks with another equipment rack of the plurality of equipment racks based on airflow consumption of each of the plurality of equipment racks to create a plurality of pairs of equipment racks, determining a combined airflow consumption value for each of the pairs of equipment racks, arranging the pairs of equipment racks to form a two-row cluster of equipment racks based on the combined airflow consumption value of the equipment racks, wherein each pair includes an equipment rack in a first row of the cluster and an equipment rack in a second row of the cluster, and determining a location of the at least one cooling provider in the cluster.
A system and method for configuring network critical physical infrastructure (NCPI) devices is provided. In one example, a method is provided including acts of gathering, by a data center management appliance, at least one device configuration from an NCPI device via a network, modifying the at least one device configuration and providing the modified at least one device configuration to the NCPI device via the network. In another example, a data center management appliance is provided that includes a storage medium, a network interface and a controller coupled to the storage medium and the network interface and configured to gather at least one device configuration from a first NCPI device via the network interface, modify the at least one device configuration and provide the modified at least one device configuration to the first NCPI device via the network interface.
A power device (100) having illuminated power outlets is disclosed. The power device includes a housing (150a, 150b), a power input interface (110) to the housing, and a plurality of power outlets (125 a-d) on the housing for distributing power from the input. Within the housing of the power device, a printed circuit board (230) has at least one LED (235 a-d) positioned adjacent to at least one of the plurality of outlets to illuminate the openings of the outlets from within the interior housing.
H01R 13/717 - Association structurelle avec des composants électriques incorporés avec une source lumineuse intégrée
H01R 25/00 - Pièces de couplage adaptées à la coopération simultanée avec plusieurs pièces complémentaires identiques, p. ex. pour la distribution d'énergie à plusieurs circuits
H01R 13/66 - Association structurelle avec des composants électriques incorporés
Systems and methods are provided for an uninterruptable power supply having a positive DC bus, a neutral DC bus, and a negative DC bus. The uninterruptible power supply includes a battery charger circuit having an inductor, a first charger output, and a second charger output. A first switch connected to a first end of the inductor is configured to couple the positive DC bus with the first charger output. A second switch connected to a second end of the inductor is configured to couple the negative DC bus with the inductor. The neutral DC bus can be coupled to the second charger output. The battery charger circuit can be configured to draw power from at to least one of the positive DC bus and the negative DC bus to charge a battery coupled to the first charger output and the second charger output.
Methods and apparatus supporting an electrical connection are disclosed. Systems previously equipped with wire interfaces, such as battery terminals, can be equipped with a connector assembly to significantly reduce a hazard of electrical shock to a user. The connector assembly includes a stress relief component that attenuates a force, applied to the stress relief component, to reduce its effect on the connector assembly. By attenuating the force, the connector assembly maintains a substantially fixed position relative to the battery pack component and mitigates a potential for disruption in electrical connectivity. Techniques disclosed herein benefit users of battery packs or other devices as well as manufacturers by increasing safety, reliability, and ergonomics.
A system and method for designing aspects of a cooling system for a data center is provided. A method is provided including computing cooling redundancy at each rack position in a data center, in real time. The redundancy can be reported using the traditional N + 1, N + 2, etc. notation, where N is the number of coolers required to meet the primary cooling load type specification. The redundancy can also be reported in terms of a Cooling Reliability Index (CRI) which also takes into account the inherent availability of the specific cooling units in the design.
A system and method for directing a user to configure a power device via an alphanumeric user interface is provided. The power device may include data storage storing a plurality of operational parameters. The method includes acts of prompting, during an initial power-up of the power device, a user to enter an indication of quality of power supplied to the power device, receiving the indication via the user interface, determining a first value for each of the plurality of operational parameters of the power device based at least in part on the indication and applying each first value of the plurality of operational parameters to the power device.
G06F 9/44 - Dispositions pour exécuter des programmes spécifiques
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
A method of estimating battery lifetime includes monitoring a charge characteristic of a battery during a first time period, monitoring an operating condition of the battery, determining a first battery life value for the first time period based on the operating condition of the battery, the charge characteristic, and a duration of the first time period, determining an overall battery life value using the first battery life value and a second battery life value for a second time period, and estimating a remaining battery lifetime for the battery based on the overall battery life value.
G01R 31/36 - Dispositions pour le test, la mesure ou la surveillance de l’état électrique d’accumulateurs ou de batteries, p. ex. de la capacité ou de l’état de charge
G01R 27/02 - Mesure de résistances, de réactances, d'impédances réelles ou complexes, ou autres caractéristiques bipolaires qui en dérivent, p. ex. constante de temps
68.
SYSTEM AND METHOD FOR ALTERING A USER INTERFACE OF A POWER DEVICE
A system and method for altering a user interface of a power device is provided. The user interface includes an interface structure. The method includes acts of receiving user preference information, determining additional configuration information of the power device, adapting the interface structure based at least in part on the user preference information and the additional configuration information and providing at least a portion of the adapted interface structure to a user via the user interface.
A method for estimating an efficiency of a power device includes identifying a state of operation of the power device, measuring power-related information produced by the power device, and determining an estimated efficiency of the power device based in part on the state of operation of the power device and power loss parameters associated with the power device by using the measured power-related information. Other methods and devices for measuring efficiency are further disclosed.
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
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
H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
70.
Method for portioning output current of a DC-DC converter
At least some aspects of the invention are directed to methods and apparatus for controlling an uninterruptible power supply and subsystems of a UPS. A first aspect of the invention is directed to a method of controlling a DC-DC converter having a predetermined maximum peak load current value. The DC-DC converter has first and second outputs to couple to a load with a capacitor coupled across the first and second outputs. The method includes in a first mode of operation, charging the capacitor to a predetermined output voltage value, and in a second mode of operation, providing output current having the maximum peak load current value to a load coupled to the output of the DC-DC converter, wherein a first portion of the output current is provided by the DC-DC converter and a second portion of the output current is provided by discharging the capacitor to a voltage value that is less than the predetermined output voltage value.
H02M 3/335 - 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 utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
71.
METHOD FOR PORTIONING OUTPUT CURRENT OF A DC-DC CONVERTER BETWEEN ITS OUTPUT CAPACITOR AND ITS POWER STAGE
At least some aspects of the invention are directed to methods and apparatus for controlling an uninterruptible power supply and subsystems of a UPS. A first aspect of the invention is directed to a method of controlling a DC-DC converter (30) having a predetermined maximum peak load current value. The DC-DC converter has first and second outputs to couple to a load (62) with a capacitor (52) coupled across the first and second outputs. The method includes in a first mode of operation, charging the capacitor to a predetermined output voltage value, and in a second mode of operation, providing output current having the maximum peak load current value to a load coupled to the output of the DC-DC converter, wherein a first portion of the output current is provided by the DC-DC converter and a second portion of the output current is provided by discharging the capacitor to a voltage value that is less than the predetermined output voltage value.
H02M 3/335 - 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 utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 3/337 - 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 utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs en configuration push-pull
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
72.
METHOD AND APPARATUS FOR OVERVOLTAGE PROTECTION OF AN INVERTER
Aspects of the invention are directed to methods and apparatus to protect an inverter from failure due to neutral lifting. In one aspect, the present invention provides a method of controlling an inverter in a UPS, the inverter being selectively coupled to a power line and comprising an input to receive an input voltage from the power line. The method comprises acts of monitoring the input voltage, detecting based on the act of monitoring, that the input voltage exceeds a predetermined high threshold value, isolating the inverter from the power line responsive to detecting that the input voltage exceeds a predetermined high threshold value, determining whether or not a neutral lifting condition exists on the power line, indicating that the inverter is in a fault state if the neutral lifting condition exists, and reconnecting the inverter to the power line if the neutral lifting condition does not exist.
H02H 7/122 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour convertisseursCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour redresseurs pour convertisseurs ou redresseurs statiques pour onduleurs, c.-à-d. convertisseurs de courant continu en courant alternatif
73.
Method and apparatus for improving the performance of an inverter
Aspects of the invention are directed to methods and apparatus to protect an inverter from failure due to neutral lifting. In one aspect, the present invention provides a method of controlling an inverter in a UPS, the inverter being selectively coupled to a power line and comprising an input to receive an input voltage from the power line. The method comprises acts of monitoring the input voltage, detecting based on the act of monitoring, that the input voltage exceeds a predetermined high threshold value, isolating the inverter from the power line responsive to detecting that the input voltage exceeds a predetermined high threshold value, determining whether or not a neutral lifting condition exists on the power line, indicating that the inverter is in a fault state if the neutral lifting condition exists, and reconnecting the inverter to the power line if the neutral lifting condition does not exist.
H02H 7/00 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail
H02B 1/20 - Schémas de barres omnibus ou d'autres fileries, p. ex. dans des armoires, dans les stations de commutation
An electrically conductive fork includes first and second arm members each having an electrical contact and a pivot portion, the pivot portion configured to receive a portion of a rod, where the first and second arm members are configured to pivot around the rod, and a connector mechanically connecting the first and second arm members in fixed relation to each other prior to insertion of a busbar between the electrical contacts, where the connector is configured to yield to a force imparted on the connector and allow the first and second arm members to pivot around the rod in response to insertion of the busbar between the electrical contacts, and the insertion of the bus bar causes the electrical contacts to separate and pivot the first and second arm members around the rod and impart the force on the connector.
H01R 25/16 - Rails ou barres omnibus pourvus de plusieurs points de connexion pour pièces complémentaires
H01R 25/14 - Rails ou barres omnibus réalisés de telle sorte que les pièces complémentaires puissent leur être connectées en tout point de leur longueur
H01R 11/12 - Pièces d'extrémité se terminant par un œillet, un crochet ou une fourchette
H01R 25/00 - Pièces de couplage adaptées à la coopération simultanée avec plusieurs pièces complémentaires identiques, p. ex. pour la distribution d'énergie à plusieurs circuits
Systems and methods for data center power supply control are provided that identify a parameter of at least one of a plurality of servers that form at least part of a data center that includes an uninterruptable power supply. An estimated parameter of a virtual server can be identified, and one of the plurality of servers can be selected based at least in part on the parameter and the estimated parameter. The virtual server can be provided to the selected server, and the power provided to at least one of the plurality of servers can be reduced, shut down, or otherwise adjusted.
Systems and methods for data center control are provided that identify parameters of one or more data centers, where each data center includes a plurality of devices. The systems and methods receive a command to execute an application, and identify a selected data center from the one or more data centers as a location to run the application based at least in part on an evaluation of the parameters.
Aspects of the invention are directed to systems and method for limiting losses in an uninterruptible power supply. In one aspect, the present invention provides an uninterruptible power supply (UPS) (10) comprising an input (12) to receive input power having an input voltage, an output (14) to provide output power having an output voltage, a neutral line, an automatic voltage regulation (AVR) transformer (20) coupled to the input (12) and the output (14) of the UPS (10) and having an input, an output, a core and at least one switch controllably coupled to at least one of the core, the input and the output, and a means (34) for isolating the core of the AVR transformer (20) from the neutral line when the input voltage is substantially equal to a defined output voltage.
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
G05F 1/24 - Régulation de la tension ou de l'intensité là où la variable effectivement régulée par le dispositif de réglage final est du type alternatif utilisant des transformateurs montés en série ou en opposition comme dispositifs de réglage final
78.
METHOD AND SYSTEM FOR DETECTING AIR PRESSURE NEUTRALITY IN AIR CONTAINMENT ZONES
An airflow detecting system includes a tubular structure (34) having an inner surface (36) defining an interior of the tubular structure, one open end (40) and an opposite open end (42). The tubular structure is configured to receive and expel air through both the one end and the opposite end. The system further includes a flap (48) connected to the inner surface of the tubular structure by a hinge (50). The flap is configured to impede airflow within the interior of the tubular structure upon the application of differential pressure across the two ends of the tubular structure. The system further includes a device (52) attached to the flap in a position in which the device spans the hinge. The device is configured to measure a parameter associated with the movement of the flap in response to airflow within the interior of the tubular structure. Other embodiments and methods are further disclosed.
G01F 1/28 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques par détection des effets dynamiques de l’écoulement par débitmètre à force d'entraînement, p. ex. du type à palette ou à poussée
G01P 13/00 - Indication ou enregistrement de l'existence ou de l'absence d'un mouvementIndication ou enregistrement de la direction d'un mouvement
A communication system and protocol that permits a first device to communicate a plurality of messages in a predetermined order to a user of the first device, where the plurality of messages, their content, and their predetermined order need not be known to the first device until the messages are provided to the first device by a second device. The user of the first device is permitted to move backward or forward through the messages in the predetermined order while utilizing a minimal amount of resources of the first device, such as processor power and memory.
G08B 5/22 - Systèmes de signalisation optique, p. ex. systèmes d'appel de personnes, indication à distance de l'occupation de sièges utilisant une transmission électriqueSystèmes de signalisation optique, p. ex. systèmes d'appel de personnes, indication à distance de l'occupation de sièges utilisant une transmission électromécanique
An air containment cooling system for containing and cooling air between two rows of equipment racks includes a canopy assembly configured to enclose a hot aisle defined by the two rows of equipment racks, and a cooling system embedded within the canopy assembly. The cooling system is configured to cool air disposed within the hot aisle. Other embodiments and methods for cooling are further disclosed.
A communication system and protocol that permits a first device to communicate a plurality of messages in a predetermined order to a user of the first device, where the plurality of messages, their content, and their predetermined order need not be known to the first device until the messages are provided to the first device by a second device. The user of the first device is permitted to move backward or forward through the messages in the predetermined order while utilizing a minimal amount of resources of the first device, such as processor power and memory.
A system and method for providing energy assessment and optimization in a data center that includes at least one cooling provider, and at least one cooling consumer, the at least one cooling consumer having cooling requirements. The method according to one aspect includes receiving data regarding cooling availability and power consumption for the at least one cooling consumer, cooling capacity of the at least one cooling provider, and a physical relationship between the at least one cooling consumer and the at least one cooling provider in the data center, storing the received data, determining airflow distribution effectiveness between the at least one cooling consumer and the at least one cooling provider, and displaying at least one value representative of the effectiveness of the distribution of airflow in the data center between the at least one cooling consumer and the at least one cooling provider.
Methods and apparatuses for providing a solution for incompatibility between nonsinusoidal waveform uninterruptible power supply (UPS) systems and active power factor correction (PFC) loads are disclosed. An embodiment of the invention includes generating a nonsinusoidal signal waveform (e.g., a voltage waveform), to be delivered to the load, with a pulse width modulation (PWM) duty width, sampling the nonsinusoidal signal waveform to collect output signal samples, and adjusting the duty width to control the nonsinusoidal signal waveform as a function of the output signal samples to deliver a desired signal characteristic (e.g., RMS signal level) to the load. In embodiments of the invention, the output duty width is adjusted differently in cases of rising and falling power consumption, respectively, by the load. Techniques disclosed herein find broad applicability in UPS systems and inverters and improve efficiency and reliability for end users and utility providers.
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
A power reduction aggregation system includes a central server and a plurality of power reduction devices. The central server of the power reduction aggregation system includes: a network interface configured to transmit and receive information to and from a communication network; a power grid status module coupled to the network interface and configured to transmit a power status message to the network, via the network interface, toward at least two power reduction devices connected to the network; and a power savings compensation module configured to determine an aggregate compensation earned for providing an aggregate energy reduction induced by the at least two power reduction devices in response to receiving the power status message, and further configured to determine individual portions of the aggregate compensation associated with each of the at least two power reduction devices.
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
G06Q 50/00 - Technologies de l’information et de la communication [TIC] spécialement adaptées à la mise en œuvre des procédés d’affaires d’un secteur particulier d’activité économique, p. ex. aux services d’utilité publique ou au tourisme
A power reduction system includes a central server and a plurality of power reduction devices. The central server of the power reduction aggregation system includes: a network interface configured to transmit and receive information to and from a communication network; a power grid status module coupled to the network interface and configured to transmit a power status message to the network, via the network interface, toward at least two power reduction devices connected to the network; and a power savings compensation module configured to determine an aggregate compensation earned for providing an aggregate energy reduction induced by the at least two power reduction devices in response to receiving the power status message, and further configured to determine individual portions of the aggregate compensation associated with each of the at least two power reduction devices.
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
G06Q 50/00 - Technologies de l’information et de la communication [TIC] spécialement adaptées à la mise en œuvre des procédés d’affaires d’un secteur particulier d’activité économique, p. ex. aux services d’utilité publique ou au tourisme
86.
METHOD AND SYSTEM FOR OPTIMIZING A COOLING MODEL OF A DATA CENTER
A system and method for design aspects of a cooling system for a data center is provided. In one example, a method is provided including acts of receiving an indication to position a perforated tile in a model, calculating cooling available in a model space adjacent to the tile, and displaying an indication of cooling availability within the context of the model on a computer system. In another example, a method is provided for manipulating representations of data elements in a model of a data center. The method allows a user to move multiple representations by adjusting the position of a layer of the model space relative to another layer in the model space.
Aspects of the invention are directed to apparatus and methods for controlling power distribution to a plurality of devices including a primary device and at least one secondary device, the primary device having at least a first mode of operation and a second mode of operation, with the second mode of operation being a lower power mode of operation than the first mode of operation.
G05B 19/04 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique
H01R 33/06 - Dispositifs à deux pôles portant deux broches, lames ou contacts analogues conducteurs de courant ayant leurs axes parallèles entre eux
H02H 3/24 - 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 une baisse ou un manque de tension
An air containment system includes a plurality of panel assemblies configured to be arranged in side-to-side relation to form a ceiling. In one embodiment, each panel assembly includes a flexible panel having a first end, a second opposite end, a first side and a second opposite side, a first end connector configured to secure the first end of the flexible panel to one of a rack and a wall, and a second end connector configured to secure the second end of the flexible panel to one of a rack and a wall. Other embodiments of the air containment system and related methods are further disclosed.
A power supply system includes an AC power line with an uninterruptible power supply (UPS) device coupled to receive power from the AC power line. The UPS includes control circuitry that couples power conversion circuitry of the UPS to the AC power line when the available AC power is acceptable. The power supply system also includes a second UPS device coupled to receive power from the AC power line. The second UPS includes a timer delay, such that the control circuitry is configured to couple power conversion circuitry to the AC power line when the available AC power is acceptable, and upon expiration of the timer.
A power supply system includes an AC power line (402) with an uninterruptible power supply (UPS) device (400) coupled to receive power from the AC power line(402). The UPS(400) includes control circuitry (412) that couples power conversion circuitry of the UPS to the AC power line (402) when the available AC power is acceptable. The power supply system also includes a second UPS device coupled to receive power from the AC power line. The second UPS includes a timer delay, such that the control circuitry is configured to couple power conversion circuitry to the AC power line when the available AC power is acceptable, and upon expiration of the timer.
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
91.
Apparatus and method for scalable power distribution
According to one aspect of the invention, a plug-in module is provided for installing in a power distribution assembly. In one embodiment, the plug-in module may include an overcurrent protection device, a power cable, which may include a first end coupled to the overcurrent protection device, and a second end coupled to the first end, one or more receptacle outlets attached to the second end and electrical contacts coupled to the overcurrent protection device and configured to couple the plug-in module to a plurality of stationary electrical conductors of the power distribution assembly.
H01H 73/00 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel
92.
METHODS AND SYSTEMS FOR MANAGING FACILITY POWER AND COOLING
A method and corresponding apparatus provide a determination of available power capacity of a phase of a power supply in a data center rack. The method includes metering the power of a power supply and calculating an average peak power draw per phase of the power supply. Using average peak power draw per phase of the power supply and the expected power draw data corresponding to data center equipment coupled to the power supply, the available power capacity can be calculated on a per phase of the power supply. A method and corresponding apparatus for managing data center equipment may use the phase based available power capacity calculations to determine the optimal placement of new data center equipment within a data center configuration.
H02J 3/14 - 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 interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
H02J 3/26 - Dispositions pour l'élimination ou la réduction des asymétries dans les réseaux polyphasés
A method of calculating net sensible cooling capacity of a cooling unit (10) includes measuring a discharge pressure from of fluid from a compressor (30) and a suction pressure from an evaporator (44), calculating a condensing temperature of fluid flowing from the compressor and an evaporating temperature of fluid flowing from the evaporator, calculating a mass flow rate of fluid flowing from the compressor, calculating enthalpy of fluid flowing from the compressor, of fluid flowing from the thermal expansion valve (48), and of fluid flowing from the evaporator, calculating a mass flow rate of fluid flowing through the hot gas bypass valve (64), and calculating net sensible cooling capacity. Embodiments of cooling units and other methods are further disclosed.
Systems and methods are provided for an uninterruptable power supply having a positive DC bus, a neutral DC bus, and a negative DC bus. The uninterruptible power supply includes a battery charger circuit having an inductor, a first charger output, and a second charger output. A first switch connected to a first end of the inductor is configured to couple the positive DC bus with the first charger output. A second switch connected to a second end of the inductor is configured to couple the negative DC bus with the inductor. The neutral DC bus can be coupled to the second charger output. The battery charger circuit can be configured to draw power from at least one of the positive DC bus and the negative DC bus to charge a battery coupled to the first charger output and the second charger output.
According to one aspect of the invention, a UPS (12) includes an input (18) configured to be coupled to an AC power source (14), a DC power source (20), an output (22) configured to receive power from at least one of the AC power source (14) and the DC power source (20), a first switched receptacle outlet (24) coupled to the output (22) and configured to be coupled to a first electpiσal load (16) and a second receptacle outlet (26) coupled to the output (22) and configured to be coupled to a second electrical load (16). According to some embodiments, the UPS also includes a control unit (34) configurable to provide a first configuration associated with the first switched receptacle outlet (24), where the first configuration is employed by the control unit (34) to control a connection of the first switched receptacle outlet (24) to the output (22) independent of the second receptacle outlet (26).
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
G06F 1/30 - Moyens pour agir en cas de panne ou d'interruption d'alimentation
Systems and methods are provided for an uninterruptable power supply having a positive DC bus, a neutral DC bus, and a negative DC bus. The uninterruptible power supply includes a battery charger circuit having an inductor, a first charger output, and a second charger output. A first switch connected to a first end of the inductor is configured to couple the positive DC bus with the first charger output. A second switch connected to a second end of the inductor is configured to couple the negative DC bus with the inductor. The neutral DC bus can be coupled to the second charger output. The battery charger circuit can be configured to draw power from at least one of the positive DC bus and the negative DC bus to charge a battery coupled to the first charger output and the second charger output.
H02M 3/158 - 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 avec commande automatique de la tension ou du courant de sortie, p. ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
H02J 9/04 - 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
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
Systems and methods disclosed herein monitor and control input to a converter in one or more of a UPS, a frequency converter, or a line conditioner. Distortion due at least in part to ripple voltage can be removed from a control signal that controls input current to the converter. The systems and methods described herein afford a simple and effective way to reduce or eliminate one or more of subharmonic oscillation and total harmonic distortion from a converter input current during synchronous and asynchronous modes of operation. The converter may include one or more of a rectifier and an inverter.
A dehumidifier unit includes a first coil in fluid communication with a source of cooling fluid, a second coil in fluid communication with the source of cooling fluid, a third coil in fluid communication with the source of cooling fluid, and a thermal unit disposed between the source of cooling fluid and the second and third coils. The thermal unit may be adapted to remove heat from cooling fluid flowing to the second coil and adapted to heat cooling fluid flowing to the third coil. A fan may be configured to move air across the first, second and third coils. The first coil may be configured to pre-cool air moving over the first coil, the second coil may be configured to dehumidify the air moving over the second coil, and the third coil may be configured to warm the air moving over the third coil. Other embodiments and methods of cooling are further disclosed.
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par humidificationSystèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaireAppareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
F24F 5/00 - Systèmes ou appareils de conditionnement d'air non couverts par ou
A dehumidifier unit includes a first coil in fluid communication with a source of cooling fluid, a second coil in fluid communication with the source of cooling fluid, a third coil in fluid communication with the source of cooling fluid, and a thermal unit disposed between the source of cooling fluid and the second and third coils. The thermal unit may be adapted to remove heat from cooling fluid flowing to the second coil and adapted to heat cooling fluid flowing to the third coil. A fan may be configured to move air across the first, second and third coils. The first coil may be configured to pre-cool air moving over the first coil, the second coil may be configured to dehumidify the air moving over the second coil, and the third coil may be configured to warm the air moving over the third coil. Other embodiments and methods of cooling are further disclosed.
F25D 17/06 - Dispositions pour la circulation des fluides de refroidissementDispositions pour la circulation de gaz, p. ex. d'air, dans les enceintes refroidies pour la circulation de gaz, p. ex. convection naturelle par circulation d'air forcée
100.
Systems and methods for uninterruptible power supply control
Systems and methods are provided for distributing power to a load by controlling an uninterruptible power supply that has an inverter and a filter, where the filter has an inductor and a capacitor. The systems and methods apply a pulse width modulation control signal to the inverter, sample inverter inductor current and compare the inductor current to a reference current. A duty cycle of the pulse width modulation control signal is adjusted to drive the inductor current at a second sampling time to a value substantially equal to a reference current at a first sampling time. The systems and methods can filter harmonic distortion from output signals and control uninterruptible power supply output.
H02M 7/757 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation 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 thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs
H02M 7/758 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation 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 thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la forme d'onde ou de la fréquence de sortie
H02M 7/797 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation 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
H02M 7/81 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation 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 agencés pour la marche en parallèle
brevets
