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US20110122662 Buck and buck/boost converter systems having auxiliary circuits and method thereof  
The configurations of a buck type and a buck/boost type converter systems and a controlling method thereof are provided in the present invention. The proposed buck/boost type converter system...
US20120139435 Method for Controlling a Voltage Transformer for Overvoltage Protection, Voltage Transformer and Operating Device having a Voltage Transformer  
A method for controlling a voltage transformer for operating a switchable load having at least one inductance and a switch, which is activated by a digital control device. When the switch is...
US20130094263 POWER SUPPLY DEVICE  
A power supply device includes an input connector, an alternating current (AC)/direct current (DC) converter, a plurality of voltage converters, and a plurality of output connectors corresponding...
US20130279204 POWER SUPPLY SYSTEM, POWER CONVERTER AND VOLTAGE REGULATING METHOD  
A power converter includes a power module, a feedback module, and a control module. The power module is used for converting an input voltage into an output voltage. The feedback module is...
US20120146534 DC/AC Inverter  
A fluorescent lamp device includes a frequency generator for generating a pulse signal, a driver circuit coupled to said frequency generator for generating at least one driving signal according to...
US20140254221 CONSTANT POWER INVERTER WITH CREST FACTOR CONTROL  
An electrosurgical generator is provided. The generator includes a DC-DC buck converter configured to output a DC waveform, the DC-DC buck converter including at least one first switching element...
US20130215657 ACTIVE BRIDGE RECTIFICATION  
Technique for controlling a circuit that converts an AC input voltage into a DC output voltage using transistors arranged in first and second transistor pairs. Each transistor of the first pair is...
US20120229034 DRIVING CONTROLLER AND FULL-BRIDGE CONVERTING CIRCUIT  
The present invention provides a full-bridge driving controller and a full-bridge converting circuit, which have the function of soft switch, to provide a DC output voltage. The present invention...
US20130169051 UNINTERRUPTIBLE POWER SUPPLY  
An uninterruptible power supply (UPS) includes a rectifier, a buck converter, a solar energy module, a boost converter, a controller, and a power distribution unit (PDU). The solar energy module...
US20110051463 APPARATUS AND METHOD FOR STANDBY POWER REDUCTION OF A FLYBACK POWER CONVERTER  
An apparatus and method for a flyback power converter reduce the standby output voltage of the flyback power converter by switching the reference voltage provided by a shunt regulator of the...
US20090001909 AUTOMOTIVE POWER INVERTER WITH REDUCED CAPACITIVE COUPLING  
An automotive power inverter is provided. The power inverter includes a chassis, a microelectronic die coupled to the chassis and having an integrated circuit formed thereon, and an insulating...
US20140078785 ADAPTER POWER SUPPLY  
An adapter power supply of the invention comprises a switching element that performs switching of an input voltage obtained by rectifying an input AC voltage to deliver switched voltage to a...
US20140146571 PULSED POWER GENERATOR  
An active voltage drop control-type pulse power generator includes power stages, a power inverter, a power loop, a control inverter, a control loop, and a compensation unit. The power stages...
US20110198936 Circuit Arrangement Including a Multi-Level Converter  
Disclosed is a circuit arrangement including at least one multi-level-converter.
US20140268910 COUPLED INDUCTOR DC STEP DOWN CONVERTER  
A step down power converter include a switch, an inductor, a diode, a capacitor, and a winding magnetically coupled to the inductor. The diode, the inductor and the capacitor are coupled in series,...
US20090189393 MICRO WIND TURBINE TOPOLOGY FOR SMALL SCALE POWER GENERATION  
A wind energy converter has a generator adapted to be coupled directly to a wind turbine without need for a mechanical gear unit. A rectifier is coupled to the generator and a converter is coupled...
US20140029320 Power Conversion with Added Pseudo-Phase  
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...
US20130063994 POWER CONVERSION WITH ADDED PSEUDO-PHASE  
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...
US20130063988 POWER CONVERSION WITH ADDED PSEUDO-PHASE  
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...
US20120014151 Power Conversion with Added Pseudo-Phase  
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...
US20140268912 NO LOAD DETECTION AND SLEW RATE COMPENSATION  
The power regulation control circuit is implemented during two modes. A first mode is a sleep mode and a second mode is a wake-up mode. During the sleep mode, the power supply detects a no-load...
US20110032732 Secondary side post regulator of flyback power converter with multile outputs  
A flyback power converter with multiple outputs has a transformer, a low-voltage output circuit, a high-voltage output circuit, and a secondary side post regulator circuit is provided. The...
US20140160802 FAULT PROTECTION AND CORRECTION OF LINE AND LOAD FAULTS  
A fault protection and correction circuit for the control of a power converter is disclosed. An example circuit generates a waveform that drives a switch on or off and controls the power converter....
US20140140107 ISOLATED POWER CONVERTER, INVERTING TYPE SHUNT REGULATOR, AND OPERATING METHOD THEREOF  
An isolated power converter, an inverting type shunt regulator, and an operating method thereof are disclosed. The isolated power converter includes a transformer, an inverting type shunt...
US20090067206 Rectifier Circuit and Three-Phase Rectifier Device  
Choppers are provided respectively in the output stages of two diode bridges, and their output sides are connected in parallel to a smoothing capacitor. By controlling the operations of the two...
US20140009988 Modulation of Multi-Phase Inverter  
The multi-phase inverter modulating method provides for calculating a duty cycle vector (D) calculated as a function of electric parameters defining a rotating vector (Vo) representative of an...
US20140301122 POWER SOURCE AND METHOD FOR COOLING SUCH A POWER SOURCE  
The invention relates to a power source (10) for providing a direct current, comprising a heavy-current transformer (12) with at least one primary winding (13) and at least one secondary winding...
US20110260639 POWER SUPPLY DEVICE HAVING CURRENT CONTROL CIRCUIT CAPABLE OF CORRECTING POWER FACTOR  
Disclosed herein is a power supply device capable of correcting power factor. The power supply device includes a rectification circuit, a first constant current circuit, a capacitor, and a second...
US20120176826 SOURCE AND MULTIPLE LOADS REGULATOR  
A circuit that has one or more control units that divide a load into two or more load groups, with each load group comprised of at least one load element. The one or more control units directing...
US20090122584 Energy Distributing Circuit Arrangement, Including a DC/DC-Converter  
The present invention relates to a current distributing circuit arrangement (20, 20′), adapted for charging a plurality of arrays of co-ordinated energy supplying DC-networks (“A” (DC)), (“B” ...
US20130343111 POWER GENERATION AND TRANSMISSION SYSTEM  
A power generation and transmission system, including: a wind turbine having an electrical generator (12) producing AC electrical power at a production frequency; a converter connected to the...
US20140177300 SWITCHED-MODE POWER SUPPLY SYSTEM AND AIRCRAFT COMPRISING SUCH A SYSTEM  
An electric power supply system, comprising: a main switching cell (6) comprising a first main branch (14) and a second main branch (16) each including a main switch (T1, T2), andan auxiliary...
US20130088894 POWER MODULE PROTECTION AT START-UP  
A power conversion unit includes a power converter and a controller coupled to the secondary or output stage of the power converter. The power conversion unit is configured to generate an output...
US20130135902 SWITCHING POWER SUPPLY CIRCUIT  
A highly power-efficient switching power supply is realized. A switching power supply circuit of the present invention comprises: a pulse generation unit configured to generate a pulse for...
US20090109718 INTEGRATED CIRCUIT INCLUDING A CONTROLLER FOR REGULATING A POWER SUPPLY  
An integrated circuit includes a controller configured to regulate an output of a power supply based on a first signal. The integrated circuit includes an input configured to receive the first...
US20130002639 DC-DC CONVERTER AND ORGANIC LIGHT EMITTING DISPLAY INCLUDING THE SAME  
A DC-DC converter and an organic light emitting display including the same are disclosed. The DC-DC converter generates first and second power voltages for the organic light emitting display with...
US20140233284 OVER VOLTAGE PROTECTION FOR ELECTRIC MACHINES  
A system and method for protecting an electrical power generation system from an over-voltage. The output voltage of a multi-phase rectifier, operatively connected between the output terminals of...
US20130223117 POWER SUPPLY SYSTEM  
The invention provides a power supply system that is capable of converting a variable AC voltage to a regulated DC voltage that is configured to be supplied to an associated device. The power...
US20120163036 POWER SUPPLY UNIT SUPPLYING STANDBY POWER BY SHARING SWITCH OF MAIN CONVERTER  
There is provided a power supply unit supplying a standby power by sharing a switch of a main converter. The power supply unit includes: a main converter, and a standby converter. The main...
US20130257054 Gas Turbine - Variable Frequency Transformer Power Systems and Methods  
Systems and methods are provided that include a gas turbine, a generator coupled to the gas turbine and configured to generate a first electrical power output, and a variable frequency transformer...
US20120127769 Soft Switching Power Converters  
Soft switching power converters are described. In one example, a grid tie solar power converter includes an input for receiving a direct current (DC) power input, an h-bridge coupled to the input,...
US20140218986 Multilevel Converter And A Method For Controlling Multilevel Converter Including Balancing Cell Voltages  
A multilevel converter for controlling a multilevel converter is provided. The multilevel converter is a single phase converter with one phase leg, or a three phase converter with three phase legs,...
US20130147275 INVERTER WITH AN AC INTERFACE FOR THE CONNECTION OF AC MODULES  
An inverter for feeding a grid-compatible AC voltage into a grid is described, wherein the inverter includes an inverter bridge for converting a DC voltage to a first AC voltage and a grid...
US20140306544 PHOTOVOLTAIC SYSTEM WITH BIASING AT THE INVERTER  
A photovoltaic system for converting a DC voltage from a photovoltaic generator into an AC voltage, includes a transformerless power inverter which comprises high-frequency-clocked switching units,...
US20130242619 RESET VOLTAGE CIRCUIT FOR A FORWARD POWER CONVERTER  
An example method includes controlling a duty ratio of a switch to regulate an output of a forward power converter and storing a first voltage. The first voltage is equal to an input voltage of the...
US20140192561 CONTROL CIRCUIT FOR SWITCHING POWER CONVERTERS WITH SYNCHRONOUS RECTIFIERS  
A control circuit for switching power converters with synchronous rectifiers is disclosed for providing start-up and shut-down protection. The control circuit for switching power converters with...
US20110235378 POWER SUPPLY SYSTEM FOR ELECTRONIC DEVICE  
A power supply system includes an AC power source, a converter, a relay switch, and a waveform monitoring circuit. The AC power source provides an AC voltage. The converter is capable of converting...
US20140104902 METHOD FOR THE OPERATION OF AN INVERTER, AND INVERTER  
The invention relates to a method for operating an inverter (1), in particular a pulse-controlled inverter, comprising multiple phase systems (2, 3, 4), each of which has an outer conductor (7, 8,...
US20120161528 Solar Photovoltaic Systems  
Improved techniques for photovoltaic power generation are described. Inverter failure is can be a significant problem in solar photovoltaic systems as it can lead to loss of opportunity to harvest...
US20130070505 Inverter Control When Feeding High Impedance Loads  
An inverter controller comprising a current regulator unit, a voltage regulator unit coupled to the current regulator unit, an inverter unit coupled to the voltage regulator unit, and a drive unit...