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Matches 251 - 300 out of 2,790

Document Document Title
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...  
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...  
WO/2011/022304
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/2011/022442
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...  
WO/2011/018542
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/2011/015227
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/2011/012143
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/2011/012689
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/2011/012689
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/2011/009285
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...  
WO/2011/008567
The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output s...  
WO/2011/008567
The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output s...  
WO/2011/001146
A capacitive impedance decoupling AC power controller comprising, a plurality of zero loss capacitors (12) in parallel each of desired capacitance C farads. The plurality of zero loss capacitors in parallel (12) are commonly connected in...  
WO/2010/145706
An arrangement for exchanging power with a three-phase electric power network comprises a Voltage Source Converter (5) having three phase legs (A-C) with each a series connection of switching cells. The three phase legs are interconnecte...  
WO/2010/142961
A system for distribution of electrical energy to a load is provided. The system comprises a load tap changer to distribute electrical energy to the load, wherein the load tap changer is controllable for operation in either phase angle f...  
WO/2010/144805
A versatile distribution transformer (10) having an electromagnetic transformer (12) and a power electronic module (14) is provided. A pocket (100) having connectors electrically connected to at least one winding structure (22) of the el...  
WO/2010/133721
The present invention relates to a protection circuit for a wind-power generator that includes a filter between the DC bus of the converter and earth, providing an additional path for the earth currents of the system, thereby reducing ex...  
WO/2010/131644
Provided is a control device for hybrid work machinery, whereby the degree of freedom in disposing necessary components is increased and the size of the hybrid work machinery is decreased. A first power conversion unit (14) is connected ...  

Matches 251 - 300 out of 2,790