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Patent Searching and Data


Matches 401 - 450 out of 6,825

Document Document Title
WO/2011/131655A3
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/2011/124745A1
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/2011/120679A3
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/2011/120679A2
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/2011/115330A1
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/2011/112630A1
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/2011/109969A1
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/2011/104285A1
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/2011/100817A1
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/2011/100819A1
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/2011/097852A1
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/2011/095828A1
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/2011/097203A1
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/2011/092475A1
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/2011/086108A1
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/2011/086108A4
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/2011/085805A1
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/2011/084227A3
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/2011/082935A1
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/2011/080393A1
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/2011/076827A3
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/2011/070481A3
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/2011/066860A1
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/2011/067090A2
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/2011/067090A3
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/2011/064277A2
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/2011/064277A3
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/2011/062508A3
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/2011/058273A2
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/2011/060280A3
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/2011/058273A3
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/2011/060280A4
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/2011/054194A1
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/2011/052364A1
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/2011/047784A1
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/2011/048719A1
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/2011/041425A3
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/2011/029480A1
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/2011/029482A1
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/2011/024668A1
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/2011/022442A3
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...  
WO/2011/022304A1
A DC to AC inverter unit used in a solar cell power system can include a controller capable of adjusting the inverter's minimal operating voltage to increase the inverter unit power capacity.  
WO/2011/022442A9
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...  
WO/2011/022442A2
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...  
WO/2011/018542A3
The invention relates to a method for controlling a back-to-back converter in the event of disturbances in the network limiting the capacity of the converter on the side of the network to control the voltage of the DC stage. In this case...  
WO/2011/015227A1
A voltage source converter (30) for HVDC power transmission comprising at least one phase element (32) consisting solely of series connected diodes (40) to interconnect, a DC network (34) and an AC network (36). The voltage source conver...  
WO/2011/012689A3
This invention discloses a high-voltage frequency conversion device, which comprises a phase-shifting transformer and 3n power units, wherein every n power units are serially connected to form one phase, three phases are connected in the...  
WO/2011/012143A1
Apparatus and method for generating electric energy in an electric power transmission system comprising an AC cable comprising a core, wherein a portion of the core is partially surrounded by an apparatus comprising a ferromagnetic body ...  
WO/2011/012689A2
This invention discloses a high-voltage frequency conversion device, which comprises a phase-shifting transformer and 3n power units, wherein every n power units are serially connected to form one phase, three phases are connected in the...  
WO/2011/009285A1
A movable shore power variable frequency power supply device includes an onshore power supply electric box (4), an onboard power receiving system (3) and a variable frequency power supply device (1). The input terminals of the variable f...  

Matches 401 - 450 out of 6,825