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Matches 251 - 300 out of 2,808

Document Document Title
WO/2011/141905
A method for construction of voltage or current power sources receiving an AC input, the power sources based on inclusion of a buffer stage feeding a converter operating with an output driver to a load. The buffer stage includes a buffer...  
WO/2011/140597
The present invention provides methods and apparatus for converting a single phase power supply source into a three phase power supply source. The single phase power supply source is utilised as a first output of the three phase power su...  
WO/2011/138110
The invention relates to a circuit for controlling a linear compressor, comprising a first input connection (130) and a second input connection (131) for providing the linear compressor with an electric supply voltage (Uv), an output con...  
WO/2011/139227
An electronic voltage stability device for airflow cabinets (100) such as biological safety cabinet or laminar flow cabinet or ductless fume hoods for delivering adjustable and stable airflow (130). The electronic voltage controlling dev...  
WO/2011/139269
A converter module for a variable speed drive having a semiconductor device for precharge is described. The precharge circuit includes switching modules, one switching module with a first semiconductor switch connected in parallel or ser...  
WO/2011/134057
Provided are methods, circuits, and systems for obtaining power from a power generator such as a photovoltaic cell or a fuel cell. The methods, circuits, and systems comprise converting substantially DC output power from the power genera...  
WO/2011/135691
A hybrid construction machine is made compact, and an electric swing motor thereof is driven immediately after an engine is started. A generator (5) connected to an engine (2) generates alternating current power. A converter (30) is conn...  
WO/2011/134057
Provided are methods, circuits, and systems for obtaining power from a power generator such as a photovoltaic cell or a fuel cell. The methods, circuits, and systems comprise converting substantially DC output power from the power genera...  
WO/2011/134990
The invention relates to a device for the power control of an electrical consumer that is connected to an alternating voltage supply network, comprising a circuit element (12, 14) which lies in series with the consumer and which has a co...  
WO/2011/131655
The present invention relates to an electricity generating system (40) having at least one direct-current unit (42) for providing a direct current (IDC), which is obtained using regenerative energy, and at least one inverter (48). For th...  
WO/2011/124745
The invention relates to an adjustment device (1) for controlling the electric drive (2) of an elevator in connection with a voltage reduction of the supplying network. The electric drive of an elevator comprises an electric motor (3) an...  
WO/2011/120679
The invention relates to a transformerless cycloconverter for connecting a first three-conductor grid (50), in particular a three-phase grid, to a second three-conductor grid (51), in particular a three-phase grid, by means of bridge mod...  
WO/2011/120679
The invention relates to a transformerless cycloconverter for connecting a first three-conductor grid (50), in particular a three-phase grid, to a second three-conductor grid (51), in particular a three-phase grid, by means of bridge mod...  
WO/2011/115330
The present disclosure relates to an automatic voltage regulator, comprising: a primary coil unit that induces an alternating current (AC) voltage, inputted from a power source, to a secondary coil according to a turn ratio; a secondary ...  
WO/2011/112630
A ground power unit (14) having a power supply unit capable of accepting a wide range of AC input voltages and producing one or more DC power signals for powering components of the GPU is disclosed. In one embodiment, the power supply un...  
WO/2011/109969
A high-voltage insulation power supply circuit comprises at least a magnetic transformer and a high-voltage-resistant wire connected to the magnetic transformer. A high-voltage insulation rod comprises at least a magnetic transformer, a ...  
WO/2011/104285
The invention relates to a method for compensating for fluctuations in the power output by an electrical machine (10), which operates as a generator, to a power supply network by means of an electrical energy storage system (68) with rec...  
WO/2011/100819
A controller device and corresponding method for modifying an AC input power to provide a reduced power AC output power to a load when coupled to the controller device. The AC output power has a series of cut-out pulses in half cycles of...  
WO/2011/100817
A microprocessor operated controller device and associated method for modifying an AC input power to provide a reduced power AC output power to a load when coupled to the controller device. The AC output power has a series of cut-out pul...  
WO/2011/097852
An energy supply system of electronic high voltage power mutual-inductor, at least includes: an input module, used to receive current and eliminate disturbance in the current; a transition module, used to transfer the received current to...  
WO/2011/095828
A lighting control system comprises an input for receiving a mains supply voltage; an output for providing an output voltage signal for powering plural lamps; a controller; a first transformer connected to the input and being for reducin...  
WO/2011/097203
Photosensor circuits include a relay coil configured to control application of an alternating current (AC) power source to a load. The circuit includes a pulse width modulator circuit configured to generate a pulse width modulated signal...  
WO/2011/092475
The present invention relates to an apparatus, system and method for controlling voltage. The voltage control apparatus, which is for controlling the voltage of a domestic power supply, comprises an electrical input (108, 109, 208, 209, ...  
WO/2011/086108
The invention relates to a radio-frequency (RF) voltage supply system (1) for supplying a multipole mass spectrometer, in particular a quadrupole mass spectrometer, with the alternating RF voltage (142) used to generate a multipole field...  
WO/2011/085805
The invention relates to a method and device for operating an asynchronous motor having increased efficiency. According to the invention, ranges for a motor size of the asynchronous motor are specified. In addition, a value of the motor ...  
WO/2011/086108
The invention relates to a radio-frequency (RF) voltage supply system (1) for supplying a multipole mass spectrometer, in particular a quadrupole mass spectrometer, with the alternating RF voltage (142) used to generate a multipole field...  
WO/2011/084227
A system and method for managing a 4 leg transformerless Uninterrupted Power Supply is disclosed. The system comprises a 3 leg inverter modulation signal generator that applies signals to a modulation circuit that generates a 4th leg mod...  
WO/2011/082935
The invention relates to a method for operating a direct converter circuit, wherein the power semiconductor switches of the switchgear cells (2) of the associated phase module (1) are actuated by means of an actuating signal (S1). In ord...  
WO/2011/080393
The invention relates to a mining vehicle and method for its energy supply. The mining vehicle has a carriage (3), driving equipment (4) for moving the carriage (3), and at least one mining work device (2). Further, the mining vehicle (1...  
WO/2011/076827
The invention relates to an electrodynamic braking device for a universal motor, wherein a field winding is fed from a grid during a braking operation, and an armature is directly short-circuited, and a braking process is performed by me...  
WO/2011/070481
Driver circuits (1) for driving load circuits (2, 3) receive source signals from sources and provide feeding signals to the load circuits (2,3) and charging signals to capacitor circuits (21). These capacitor circuits (21) provide suppor...  
WO/2011/066860
The invention relates to a method for controlling a voltage intermediate circuit converter (K). In order to be able to operate such a voltage intermediate circuit converter (K) in a particularly secure manner, a voltage-related control d...  
WO/2011/067090
The invention relates to a method for operating an inverter circuit wherein the inverter circuit has n input phase connections (U1, V1, W1) and p output phase connections (U2, V2, W2), wherein n ≥ 2 and p ≥ 2, (n p) comprises two-pol...  
WO/2011/067090
The invention relates to a method for operating an inverter circuit wherein the inverter circuit has n input phase connections (U1, V1, W1) and p output phase connections (U2, V2, W2), wherein n ≥ 2 and p ≥ 2, (n p) comprises two-pol...  
WO/2011/064277
A drive device and method for controlling a rotating machine. The drive device includes plural inverters (60) configured to transform first alternate currents, AC; DC links (62a, 62b)connected to the plural inverters (60) and configured ...  
WO/2011/064277
A drive device and method for controlling a rotating machine. The drive device includes plural inverters configured to transform first alternate currents (AC); DC links connected to the plural inverters and configured to transmit the DC ...  
WO/2011/062508
A power converter providing required hold up for a primary converter, particularly a cycloconverter, without the required hold up capacity by an auxiliary converter including storage capacitors having the requisite capacity. The auxiliar...  
WO/2011/060280
A power isolation system and method is disclosed. The system includes a transformer suitable for use in the power isolation system, and a semiconductor device electrically connected to the transformer to provide a reduction of the inrush...  
WO/2011/060280
A power isolation system and method is disclosed. The system includes a transformer suitable for use in the power isolation system, and a semiconductor device electrically connected to the transformer to provide a reduction of the inrush...  
WO/2011/058273
The invention relates to a matrix converter circuit having n symmetrical levels per phase including n conversion arms respectively supplied by n intermediate symmetrical voltage levels and connected at the output thereof to a common poin...  
WO/2011/058273
The invention relates to a matrix converter circuit having n symmetrical levels per phase including n conversion arms respectively supplied by n intermediate symmetrical voltage levels and connected at the output thereof to a common poin...  
WO/2011/054194
A static power supply for retractable cables comprises a static power supply housing (11) and a cable reel housing (6). A frequency converter with a frequency and an input voltage of mains supply is disposed in the static power supply ho...  
WO/2011/052364
A power conversion device (1) is configured from an inductor (L) connected in series to an alternating-current power source (20) and a load (30), a full-bridge MERS (100) connected in parallel to the load (30), a control circuit (110), a...  
WO/2011/048719
Disclosed is a power semiconductor module wherein a driver IC (7), which operates in a power supply system that is electrically insulated from a control IC (8), is mounted in the vicinity of a switching element (4) on a first conductor p...  
WO/2011/047784
The invention relates to a device having an energy recovery supply unit and to a fault detection method. The supply unit is connected to the supplying power network via at least one inductor. The invention is characterized in that a netw...  
WO/2011/041425
An apparatus including an alternator that is drivable an engine for producing a first AC electric current, a rectifier in electrical communication with the alternator lot producing a DC electric current an inventor in electrical communic...  
WO/2011/029482
An inverter provides alternating current (iout) to a load (130) containing a welding circuit. The inverter includes at least one commutation circuit (110) and a bridge circuit (120) connected to a bus forwarding power from a DC power sou...  
WO/2011/029480
The invention concerns a method, voltage source converter and computer program product for limiting the current in a DC power transmission system (20). The voltage source converter (12) has an AC side and a DC side and a fault current pa...  
WO/2011/024668
Disclosed is an engine system which can implement the specification change of power-supply voltage from an alternating-current power supply without additionally providing a transformer when the power supply voltage to be subjected to spe...  
WO/2011/022442
Methods and systems for power conversion. An energy storage capacitor is contained within an H-bridge subcircuit which allows the capacitor to be connected to the link inductor of a Universal Power Converter with reversible polarity. Thi...  

Matches 251 - 300 out of 2,808