Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 751 - 800 out of 7,488

Document Document Title
WO/2010/015461A3
The invention relates to a device (12) comprising an electric machine (16), a voltage detection device, and an analysis device. A fixed or movable part of the electric machine (16) has a field winding (F1) to which a first electric volta...  
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/2011/104285A1
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/2011/070481A3
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/2011/095828A1
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/2009/118299A3
The invention relates to a circuit arrangement (10) for operating a universal motor (11) which is designed to drive a drum of a domestic device for treating items of laundry, said universal motor (11) comprising a stator with at least on...  
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/2011/085805A1
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/2011/022442A3
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/2011/082935A1
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/2009/066839A3
The present invention relates to a motor controller (200) of an air conditioner, including an inverter (220) including a plurality of switching elements and adapted to convert a DC voltage, input through switching operations of the switc...  
WO/2009/066838A3
The present invention relates to a motor controller (200) for air conditioner including a converter (210) having at least one switching element for converter, the converter converting AC utility power into DC power by a switching operati...  
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/2011/012689A3
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/2011/064277A2
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/2011/058273A2
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/2011/054194A1
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/2008/110964A3
A motor control circuit (MC) comprising input terminals (ITl, IT2) to receive a rectified input voltage (Vrm), and output terminals (OTl, 0T2) to supply a motor drive signal (Vm). A switching circuit (1) is alternately in an on- state (T...  
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/2011/008567A3
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/2011/022442A9
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/2010/032761A8
Pulses in effective power caused by odd-order harmonic components in the current flowing to an inductive load are reduced is cases where AC voltage is output to the load. Voltage control factor (Ks) of an inverter (4) has a DC component ...  
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/2009/034420A3
A power system and a control method thereof are disclosed. The power system comprises: providing a plurality of power sources; electrically connecting a plurality of converters between the power sources and at least one load, wherein the...  
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/2011/022304A1
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/2011/022442A2
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/2011/015227A1
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/2011/012143A1
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...  
WO/2011/008567A2
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/2011/001146A1
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/2010/145706A1
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/2010/144805A1
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/2010/142961A1
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/2010/099459A3
A hybrid distribution transformer is provided that includes an electromagnetic transformer and a voltage source converter that is operable to reduce fluctuation in the output voltage of the hybrid distribution transformer in the event of...  
WO/2010/091260A3
A hybrid transformer is provided that includes an electromagnetic transformer and an AC-AC converter with a DC bridge. The AC-AC converter is operable to keep the input voltage and current of the hybrid transformer substantially in phase...  
WO/2009/032660A3
A colorimetric composition is disclosed comprising a polycarbonate resin, a dye, and a thiopropionate. The composition undergoes an irreversible color shift to a darker color upon exposure to sunlight or UV radiation. Processes for produ...  
WO/2010/133721A1
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...  

Matches 751 - 800 out of 7,488