Abrégé

The present disclosure relates to planar transformer (10) comprising a first PCB (1) comprising a first coil pattern surrounding a first opening (11), a second PCB (2) comprising a second coil pattern surrounding a second opening (21), and at least one elastically compressible element (5) sandwiched between the first and second PCB (1, 2). The planar transformer (10) further comprises a top core portion (3) and a bottom core portion (4), wherein the first and second PCB (1, 2) are arranged between the top and bottom core portions (3, 4) and, wherein the at least one elastically compressible element (5) is compressed by the first and second PCB (1, 2) so as to push the first and second PCB (1, 2) away from each other, towards the inner surfaces of the top and bottom core portions (3, 4) of the magnetic core assembly, respectively.

Classes IPC  ?

• H01F 27/26 - Fixation des parties du noyau entre ellesFixation ou montage du noyau dans l'enveloppe ou sur un support
• H01F 27/28 - BobinesEnroulementsConnexions conductrices
• H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre euxFixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support
• H01F 27/33 - Dispositions pour amortissement du bruit

Produits et services

Permanent magnet motors; electric motors for machines; integral permanent magnet motors; non-hydraulic drives for motors; non-hydraulic drives for electric motors; electric drives for regulation and control of torque and speed in electric motors; safety brakes for electric and non-hydraulic machines or electric non-hydraulic motors; electro-mechanical brakes for electric and non-hydraulic machines or electric non-hydraulic motors; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots. Electric apparatus and instruments for regulation and control of machines, electric apparatus and instruments for regulation and control of motors, electric apparatus and instruments for safety devices for avoidance of damages on persons, machines or goods; computer software, computer software for regulation and control of motors; computer hardware for regulation and control of motors; computer software for safety devices for avoidance of damages on persons, machines or goods; computer hardware for safety devices for avoidance of damages on persons, machines or goods; field buses; printed circuit cards; battery chargers; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots.. Engineering services; research services; industrial development services.

Abrégé

An active discharge circuit for electric vehicle inverter, the active discharge circuit intended to be connected in parallel with a DC link capacitor connected between positive and negative lines of a DC power link, wherein the circuit comprises a dissipative current source, a switch connected in series with the current source between the DC lines, and a controller connected to the switch and arranged to apply an activation signal in dependence of a control signal, the activation signal placing the switch in a conducting state, wherein the current source is configured to draw a discharge current and dissipate any energy stored in the DC link capacitor when the switch is in the conducting state. As long as the switch is closed by the activation signal, the current source will draw a constant current and dissipate power, and the voltage across the DC link capacitor will decrease linearly.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• B60L 3/00 - Dispositifs électriques de sécurité sur véhicules propulsés électriquementContrôle des paramètres de fonctionnement, p. ex. de la vitesse, de la décélération ou de la consommation d’énergie
• B60L 15/00 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train
• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries

Abrégé

An assembly (110) for dissipating heat generated by a heat generating electrical component (16) which is surface mounted on a circuit board (11) in a surface mounting process. The assembly comprises a heat buffer (120) made of a thermally and electrically conducing material, and being surface mounted on the circuit board (11) so as to be soldered to a thermal flag (18) of the heat generating electrical component (16). The assembly further comprises a heat sink (12) in thermal contact with the heat buffer, and a galvanic separation (13) between the heat buffer and heat sink. The heat capacitance of the heat buffer can absorb short term increases in heat dissipation from the electrical component, before the heat is further dissipated to the galvanically separated heat sink. This may drastically improve performance of the surface mounted component.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H05K 1/02 - Circuits imprimés Détails
• H05K 1/11 - Éléments imprimés pour réaliser des connexions électriques avec ou entre des circuits imprimés
• H05K 1/18 - Circuits imprimés associés structurellement à des composants électriques non imprimés
• H05K 3/34 - Connexions soudées
• H05K 3/40 - Fabrication d'éléments imprimés destinés à réaliser des connexions électriques avec ou entre des circuits imprimés

Abrégé

An active discharge circuit for electric vehicle inverter, the active discharge circuit intended to be connected in parallel with a DC link capacitor connected between positive and negative lines of a DC power link, wherein the circuit comprises a dissipative current source, a switch connected in series with the current source between the DC lines, and a controller connected to the switch and arranged to apply an activation signal in dependence of a control signal, the activation signal placing the switch in a conducting state, wherein the current source is configured to draw a discharge current and dissipate any energy stored in the DC link capacitor when the switch is in the conducting state. As long as the switch is closed by the activation signal, the current source will draw a constant current and dissipate power, and the voltage across the DC link capacitor will decrease linearly.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
• B60L 3/00 - Dispositifs électriques de sécurité sur véhicules propulsés électriquementContrôle des paramètres de fonctionnement, p. ex. de la vitesse, de la décélération ou de la consommation d’énergie
• B60L 15/00 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p. ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désiréesAdaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train

Produits et services

Permanent magnet motors; electric motors for machines, namely, stepper motors and induction motors, not for land vehicles; electric motors, not for land vehicles; integral permanent magnet motors; non-hydraulic drives for motors; non-hydraulic drives for electric motors; electric drives for regulation and control of torque and speed in electric motors; safety brakes for electric and non-hydraulic machines or electric non-hydraulic motors, other than for land vehicles; electro-mechanical brakes for electric and non-hydraulic machines or electric non-hydraulic motors, other than for vehicles; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots; all the goods listed above being non-hydraulic, non-pneumatic Electric apparatus and instruments for regulation and control of electric current, torque, moment, and speed in non-hydraulic and non-pneumatic machines; electric apparatus and instruments for regulation and control of electric current, torque, moment, and speed in non-hydraulic and non-pneumatic motors; electric apparatus and instruments for safety devices for avoidance of damages on persons, machines or goods, namely, sensors and detector units, transmitters of electric signals, and control devices for electrical motors; recorded computer software for regulation of micro controllers; recorded computer software for regulation and control of non-hydraulic and non-pneumatic motors; computer hardware for regulation and control of non-hydraulic and non-pneumatic motors; recorded computer software for safety devices for avoidance of damages on persons, machines or goods; computer hardware for safety devices for avoidance of damages on persons, machines or goods; computer network interface devices, namely, field buses; printed electronic circuit cards; battery chargers; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots Engineering services in the electrical, electronical and communications fields; industrial research and product development services in the electrical, electronical and communications fields

Produits et services

(1) Permanent magnet motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; electric motors for machines, namely, stepper motors and induction motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; electric motors used in industrial applications excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; linear motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; power tool motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; integral permanent magnet motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; non-hydraulic drives for motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; non-hydraulic drives for electric motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; gear drives for regulation and control of torque and speed in electric motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; safety brakes for electric and non-hydraulic machines or electric non-hydraulic motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; electro-mechanical brakes for electric and non-hydraulic machines or electric non-hydraulic motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots (2) Computers for regulation and control of electric current, torque, moment, and speed in non-hydraulic and non-pneumatic machines excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; safety devices comprised of computers for regulation and control of electric current, torque, moment, and speed in non-hydraulic and nonpneumatic motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; electric apparatus and instruments for safety devices for avoidance of damages on persons, machines or goods, namely, sensors and detector units, transmitters of electric signals, and control devices for electrical motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; computer software for regulation of micro controllers excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; Computer software for the regulation of microcontrollers, computer software for regulation and control of non-hydraulic and non-pneumatic motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; computer hardware for regulation and control of motors excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; computer software for the regulation of safety devices comprised of computers, sensors for detecting torque, movement of electric motors for machines, emergency signal transmitters, electrical controllers for controlling electric motors for machines for electric motors and the avoidance of damages to persons, machines or goods excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; computer hardware for safety devices for avoidance of damages on persons, machines or goods excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; computer network interface devices, namely, field buses excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; printed electronic circuit cards excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots; Chargers for electric accumulators excluding for use in connection with electric welding machines other than as integrated electronic or non-hydraulic drive components for use in regulation, control of torque, speed or brakes in welding robots (1) Electrical engineering, computer engineering; industrial research and product development services in the field of electrical engineering

Abrégé

An assembly (110) for dissipating heat generated by a heat generating electrical component (16) which is surface mounted on a circuit board (11) in a surface mounting process. The assembly comprises a heat buffer (120) made of a thermally and electrically conducing material, and being surface mounted on the circuit board (11) so as to be soldered to a thermal flag (18) of the heat generating electrical component (16). The assembly further comprises a heat sink (12) in thermal contact with the heat buffer, and a galvanic separation (13) between the heat buffer and heat sink. The heat capacitance of the heat buffer can absorb short term increases in heat dissipation from the electrical component, before the heat is further dissipated to the galvanically separated heat sink. This may drastically improve performance of the surface mounted component.

Classes IPC  ?

• H01L 23/36 - Emploi de matériaux spécifiés ou mise en forme, en vue de faciliter le refroidissement ou le chauffage, p. ex. dissipateurs de chaleur
• H01L 23/367 - Refroidissement facilité par la forme du dispositif
• H01L 23/495 - Cadres conducteurs
• H01L 21/48 - Fabrication ou traitement de parties, p. ex. de conteneurs, avant l'assemblage des dispositifs, en utilisant des procédés non couverts par l'un uniquement des groupes ou
• H01L 23/40 - Supports ou moyens de fixation pour les dispositifs de refroidissement ou de chauffage amovibles

Abrégé

Described are, among other things, an electric machine (10) and a housing (12) for an electric machine. The electric machine (10) is provided with a liquid cooling arrangement and comprises a housing (12). The housing (12) is formed as one unitary element and comprises a first space (30) in which first space (30) a stator (21) and a rotor (23) are located. The rotor (23) has a shaft (20). Further, a second space (50) is formed in the housing (12). In the second space (50) electronics (54) for operation of the electric machine is located. Also, a third space (40) is formed in the housing (12), the third space (40) is located, seen in axial direction of the shaft (20), between the first space (30) and the second space (50). The third space (40) comprises at least one inlet (18) for a cooling liquid and at least one outlet (28) for the cooling liquid.

Classes IPC  ?

• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 11/33 - Circuits d’entraînement, p. ex. circuits électroniques de puissance
• H02K 9/08 - Dispositions de refroidissement ou de ventilation par un agent de refroidissement gazeux circulant entièrement à l'intérieur de l'enveloppe de la machine
• H02K 11/21 - Dispositifs pour détecter la vitesse ou la position, ou actionnés par des valeurs de ces variables
• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile

Abrégé

A multiphase electric motor system and a method for controlling a multiphase electric motor system are disclosed. The method for controlling the multiphase electric motor system includes modulating a plurality of carrier signals with a plurality of modulation signals in order to generate a multiphase motor supply signal having a modulated phase signal for each phase of the electric motor. A set of time windows is defined in each period of the multiphase motor supply signal, where an individually selected group of modulated phase signals is modified by delaying the associated carrier signal in each time window, thereby generating a shifted multiphase motor supply signal and providing an efficient DC bus ripple reduction. Hereby, it is e.g. possible to use small filter capacitors/capacitor banks in electrical motor systems. An analogous multiphase electric generator system and method for controlling a multiphase electric generator system are disclosed.

Classes IPC  ?

• H02P 29/50 - Diminution des harmoniques
• H02P 27/08 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions
• H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
• H02M 7/5395 - 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 avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions
• 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
• H02P 25/22 - Enroulements multiplesEnroulements pour plus de trois phases

Abrégé

An optical bus system (1) having a start-up state and at least one operating state is disclosed. The optical bus system (1) includes a mechanical support structure (21) arranged to receive and hold a master module (2) having a downstream optical interface (3) and a set of slave modules (6) each having an upstream optical interface (7) and a downstream optical interface (8). The modules are attached to the mechanical support structure (21) such that optical interfaces of adjacent modules are aligned and in close proximity to each other in order to enable optical communication (24, 25) between adjacent modules. Each slave module (6) is further provided with circuitry to form one or two shunting signal paths (30, 31) depending on operating state after an addressing procedure is completed in the start-up state. Hereby, it is e.g. possible to realize a robust and cost-efficient optical bus system with high bandwidth capability.

Classes IPC  ?

• G06F 13/40 - Structure du bus
• H04L 12/40 - Réseaux à ligne bus
• H04B 10/278 - Réseaux du type bus

Abrégé

An optical torque sensor (1) for measuring a torque on a rotating system having a shaft is presented. The optical torque sensor comprises two wedge prisms (3, 4) coupleable to an input portion and an output portion of the shaft. Furthermore, a light source (5) is arranged to emit a light beam through the wedge prisms toward an optical position sensor (6) which is arranged to receive the light beam and configured to provide a position signal indicative of a position of an incident light spot in the optical position sensor. The optical torque sensor further has control circuitry (30) configured to receive the position signal and to determine a torque value applied to the input portion based on this position signal. Hereby, a cost effective, robust, and compact optical torque sensor is presented, the sensor is particularly suitable for automotive applications such as power steering mechanisms. Also, a power steering system employing such an optical torque sensor is disclosed.

Classes IPC  ?

• G01L 3/12 - Dynamomètres de transmission rotatifs dans lesquels l'élément transmettant le couple comporte un arbre élastique en torsion impliquant des moyens électriques ou magnétiques d'indication impliquant des moyens photo-électriques

Abrégé

An electrical motor system and a method for operating the electrical motor system are disclosed. The electrical motor system comprises a direct current (DC) source, a filter connected in parallel with the DC source and an electric motor with at least two sets of windings. A voltage signal is provided from the DC source to the inverter circuit where the signal is modulated. The modulated signal is then supplied from the inverter circuit to each set of windings with a respective time offset between each set of windings respectively, providing a very efficient DC bus ripple reduction. Hereby, it is e.g. possible to use small filter capacitors/capacitor banks in electrical motor systems.

Classes IPC  ?

• 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
• H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
• H02M 7/521 - 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 thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
• H02M 7/523 - 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 thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs avec un circuit résonnant LC dans le circuit principal

Abrégé

A multiphase electric motor system and a method for controlling a multiphase electric motor system are disclosed. The method for controlling the multiphase electric motor system includes modulating a plurality of carrier signals with a plurality of modulation signals in order to generate a multiphase motor supply signal having a modulated phase signal for each phase of the electric motor. A set of time windows is defined in each period of the multiphase motor supply signal, where an individually selected group of modulated phase signals is modified by delaying the associated carrier signal in each time window, thereby generating a shifted multiphase motor supply signal and providing an efficient DC bus ripple reduction. Hereby, it is e.g. possible to use small filter capacitors/capacitor banks in electrical motor systems. An analogous multiphase electric generator system and method for controlling a multiphase electric generator system are disclosed.

Classes IPC  ?

• H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
• 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
• H02P 29/50 - Diminution des harmoniques
• H02P 27/08 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions

Abrégé

Described are, among other things, an electric machine (10) and a housing (12) for an electric machine. The electric machine (10) is provided with a liquid cooling arrangement and comprises a housing (12). The housing (12) is formed as one unitary element and comprises a first space (30) in which first space (30) a stator (21) and a rotor (23) are located. The rotor (23) has a shaft (20). Further,a second space (50) is formed in the housing (12). In the second space (50) electronics (54) for operation of the electric machine is located. Also, a third space (40) is formed in the housing (12), the third space (40) is located, seen in axial direction of the shaft (20),between the first space (30) and the second space (50). The third space (40) comprises at least one inlet (18) for a cooling liquid and at least one outlet (28) for the cooling liquid.

Classes IPC  ?

• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile
• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 11/33 - Circuits d’entraînement, p. ex. circuits électroniques de puissance

Abrégé

An optical bus system (1) having a start-up state and at least one operating state is disclosed. The optical bus system (1) includes a mechanical support structure (21) arranged to receive and hold a master module (2) having a downstream optical interface (3) and a set of slave modules (6) each having an upstream optical interface (7) and a downstream optical interface (8). The modules are attached to the mechanical support structure (21) such that optical interfaces of adjacent modules are aligned and in close proximity to each other in order to enable optical communication (24, 25) between adjacent modules. Each slave module (6) is further provided with circuitry to form one or two shunting signal paths (30, 31) depending on operating state after an addressing procedure is completed in the start-up state. Hereby, it is e.g. possible to realize a robust and cost-efficient optical bus system with high bandwidth capability.

Classes IPC  ?

• H04B 10/278 - Réseaux du type bus

Abrégé

An electrical motor system and a method for operating the electrical motor system are disclosed. The electrical motor system comprises a direct current (DC) source, a filter connected in parallel with the DC source and an electric motor with at least two sets of windings. A voltage signal is provided from the DC source to the inverter circuit where the signal is modulated. The modulated signal is then supplied from the inverter circuit to each set of windings with a respective time offset between each set of windings respectively, providing a very efficient DC bus ripple reduction. Hereby, it is e.g. possible to use small filter capacitors/capacitor banks in electrical motor systems.

Classes IPC  ?

• H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Produits et services

Motors; electric motors; integral motors; non-hydraulic drives for motors; non-hydraulic drives for electric motors; electric drives for regulation and control of torque and speed in electric motors; safety brakes for electric and non-hydraulic machines or electric non-hydraulic motors; electro-mechanical brakes for electric and non-hydraulic machines or electric non-hydraulic motors; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots. Electric apparatus and instruments for regulation and control of machines, electric apparatus and instruments for regulation and control of motors, electric apparatus and instruments for safety devices for avoidance of damages on persons, machines or goods; computer software, computer software for regulation and control of motors; computer hardware for regulation and control of motors; computer software for safety devices for avoidance of damages on persons, machines or goods; computer hardware for safety devices for avoidance of damages on persons, machines or goods; field buses; printed circuit cards; battery chargers; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots. Engineering services; industrial research and development services.

Produits et services

Motors; electric motors; integral motors; non-hydraulic drives for motors; non-hydraulic drives for electric motors; electric drives for regulation and control of torque and speed in electric motors; safety brakes for electric and non-hydraulic machines or electric non-hydraulic motors; electro-mechanical brakes for electric and non-hydraulic machines or electric non-hydraulic motors; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots. Electric apparatus and instruments for regulation and control of machines, electric apparatus and instruments for regulation and control of motors, electric apparatus and instruments for safety devices for avoidance of damages on persons, machines or goods; computer software, computer software for regulation and control of motors; computer hardware for regulation and control of motors; computer software for safety devices for avoidance of damages on persons, machines or goods; computer hardware for safety devices for avoidance of damages on persons, machines or goods; field buses; printed circuit cards; battery chargers; all the goods listed above not for use for welding machines as such nor in connection with welding other than as integrated electronic or non-hydraulic drive components for regulation, control of torque, speed or brakes in welding robots. Engineering services; research services; development services.

Abrégé

The present invention relates to an electrical control circuitry configured to provide a control signal for switching a semiconductor switch between a conductive state and a non-conductive state, the semiconductor switch arranged to supply electrical power from a power source to a load connected to an output terminal of the semiconductor switch, wherein the electrical control circuitry is configured to switching, using the control signal, the semiconductor switch from the non-conductive state to the conductive state, the control signal having a first predefined slew rate, determining an electrical peak current level in at least one of the load and the semiconductor switch, comparing the electrical peak current level with a predefine maximum peak current level, switching, using the control signal, the semiconductor switch from the conductive state to the non-conductive state if the electrical peak current level is above the predefined peak current level, the control signal having a second predefined slew rate, the second predefined slew-rate being higher than the first predefined slew rate, and switching, using the control signal, the semiconductor switch from the non-conductive state to the conductive state, the control signal having a second predefined slew rate.

Classes IPC  ?

• H03K 17/16 - Modifications pour éliminer les tensions ou courants parasites

Abrégé

An embodiment of the present invention discloses an apparatus for recyclable absorption of electric retardation energy from a multiple axis industrial robotics system, including a robot control unit and at least one drive unit, which generates the electrical retardation energy at retardation. By an apparatus according to the present invention, the electric retardation energy, which occurs when a drive unit is retarded and is transferred into generator mode, may be recycled by the brake unit of the apparatus, which accelerates a mechanical device connected to the brake unit. The electric retardation energy is thus transferred into kinetic energy that may be stored in mechanical devices. An embodiment of the present invention also refers to a corresponding method for recyclable absorption of electric retardation energy from a multiple axis industrial robotics system.

Classes IPC  ?

• H02P 3/26 - Dispositions pour l'arrêt ou le ralentissement de moteurs, génératrices électriques ou de convertisseurs dynamo-électriques pour arrêter ou ralentir individuellement un moteur dynamo-électrique ou un convertisseur dynamo-électrique pour arrêter ou ralentir un moteur à courant alternatif par freinages électrique et mécanique combinés
• B25J 19/00 - Accessoires adaptés aux manipulateurs, p. ex. pour contrôler, pour observerDispositifs de sécurité combinés avec les manipulateurs ou spécialement conçus pour être utilisés en association avec ces manipulateurs
• H02P 3/14 - Dispositions pour l'arrêt ou le ralentissement de moteurs, génératrices électriques ou de convertisseurs dynamo-électriques pour arrêter ou ralentir individuellement un moteur dynamo-électrique ou un convertisseur dynamo-électrique pour arrêter ou ralentir un moteur à courant continu par freinage en récupération