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US20140029316 METHOD AND CIRCUIT FOR CONTROLLING A SWITCHING REGULATOR  
A method for controlling a switching regulator includes defining a waiting time during which a trigger signal corresponding to a recirculation signal of the switching regulator is ignored holding a...
US20120120697 Three-phase isolated rectifer with power factor correction  
A new class of Three-Phase Isolated Rectifiers with Power Factor Correction provides a high efficiency, small size and low cost due to direct conversion from three-phase input voltage to output DC...
US20140050000 DC-Link Voltage Balancing Control for Multilevel Inverters  
A method for balancing a voltage of an inverter determines an expected voltage of a capacitor based on a voltage of the capacitor at a start of a switching cycle and determines a duty cycle...
US20110051480 20ยบ PHASE-SHIFTING AUTOTRANSFORMER  
The invention relates to autotransformers used notably for converting alternating (AC) electric power into direct (DC) power. And more precisely, to autotransformers designed to be connected to a...
US20120188806 POWER DISTRIBUTION SYSTEM  
A power distribution system includes a DC-DC converter which outputs a DC power after converting the DC power outputted from a DC power source to a desired voltage level. In the power distribution...
US20130235632 Active Rectifier with Modulation  
Described is a rectification circuit to generate a direct current at an output of the rectification circuit subject to an alternating voltage at an input of the rectification circuit. The...
US20140022829 Hybrid Adaptive Power Factor Correction Schemes For Switching Power Converters  
The embodiments disclosed herein describe a method of a controller of a switching power converter that provides a configurable power factor control method for the switching power converter. In one...
US20110176333 Power Converter with Isolated and Regulation Stages  
In a power converter, the duty cycle of a primary winding circuit causes near continuous flow of power through the primary and secondary winding circuits during normal operation. By providing no...
US20110149607 Controller for a Power Converter  
A power converter employing a controller configured to increase a dead time between conduction periods of first and second power switches therein and method of operating the same. In one...
US20140211529 METHODS AND SYSTEMS FOR OPERATING A BI-DIRECTIONAL MICRO INVERTER  
A micro inverter includes a synchronous bi-directional power converter and a controller communicatively coupled to the synchronous bi-directional power converter. The controller is configured to...
US20110255314 SWITCHED POWER CONVERTER WITH EXTENDED HOLD-UP TIME  
A power supply module having a PFC stage has a hold-up capacitor (34) for continuing output power for a time after an ac power supply (2) stops. The hold-up capacitor is charged by a winding (40)...
US20110134664 Startup Circuit and Power Converter Employing the Same  
A startup circuit with reduced power dissipation, method of operating the same and a power converter employing the startup circuit. In one embodiment, the startup circuit for a controller includes...
US20130301319 PRINTED CIRCUIT BOARD  
A power source circuit includes a switching circuit 4 that converts a direct current voltage obtained by converting an alternating voltage from an alternating power source input through a pair of...
US20130272038 EXCITATION CONTROL CIRCUIT, CONTROL METHOD AND ELECTRICALLY EXCITED WIND POWER SYSTEM HAVING THE SAME  
The present invention provides an excitation control circuit, a control method using the same and an electrically excited wind power system having the same. The excitation control circuit comprises...
US20090256419 AC/AC POWER CONVERTER FOR AIRCRAFT  
A matrix converter circuit having two AC/AC matrix converters coupled in parallel in a first mode to power a starter and decoupled in a second mode to each power separate functions used in aircraft...
US20140268968 TRANSFORMER FOR AN INVERTER SYSTEM AND AN INVERTER SYSTEM COMPRISING THE TRANSFORMER  
A transformer comprises a primary winding 231; a secondary winding 233; a first electrostatic screen 234 located between the primary winding and the secondary winding and most proximate to the...
US20130200829 POWER SUPPLY APPARATUS OF HOME APPLIANCE  
A power supply apparatus of a home appliance which meets standby power regulation of 0.5 watts using one SMPS. As compared with a general circuit which meets the standby power regulation using two...
US20110134667 REDUNDANT CONTROL METHOD FOR A POLYPHASE CONVERTER WITH DISTRIBUTED ENERGY STORES  
The invention relates to a method for controlling a converter having at least two phase modules (100) that comprise an upper and a lower valve branch (T1, . . . , T6), each of which is equipped...
US20110286253 Three-phase inverter circuit and method for operating a three-phase inverter circuit  
A three-phase inverter circuit includes an inverter comprising a plurality of controllable power switches, and an electronic control device adapted to control the power switches. The control device...
US20120087163 POWER SUPPLY APPARATUS  
A relay contact is connected between positive power supply input terminals of first and second inverters, and a relay contact is connected between negative power supply input terminals of the...
US20130051103 METHOD OF CONTROLLING AN INVERTER AND A CONTROLLER FOR CONTROLLING AN INVERTER  
A method of controlling an inverter for converting a DC input to an AC output, the method including measuring a voltage of an AC output produced by the inverter; determining a drive voltage for...
US20110310641 METHOD OF UPGRADING A PLANT FOR TRANSMITTING ELECTRIC POWER AND SUCH A PLANT  
A plant for transmitting electric power through HVDC includes two converter stations interconnected by a monopolar direct voltage network and each having an alternating voltage side for feeding...
US20120063175 COMPENSATION CIRCUIT AND METHOD FOR A SYNCHRONOUS RECTIFIER DRIVER  
Provided are circuits and methods for driving the synchronous rectifier (SR) of a power converter. A non-linear voltage sense compensator is applied across the drain and source of the SR, and a...
US20140223949 CONTROL DEVICE FOR SWITCHING POWER SUPPLY CIRCUIT, AND HEAT PUMP UNIT  
A mode controller shifts, along with increase in an electric power in first and second of chopper circuits and, operation modes of the first and the second of the chopper circuits from a first mode...
US20120155119 POWER CONVERTER INTEGRATED WITH FLYBACK CONVERTER  
There is provided a power converter integrated with an auxiliary converter. The power converter includes: a flyback converter converting an input power of a power supply input terminal into a...
US20130147273 RESONANT POWER MANAGEMENT ARCHITECTURES  
Disclosed are various embodiments of resonant power management of a mobile device. In one embodiment, a mobile device including a power management unit (PMU) including a resonant inverter, a...
US20140226365 METHOD FOR CHECKING A SEPARATION POINT BETWEEN A PHOTOVOLTAIC INVERTER AND POWER SUPPLY NETWORK AND PHOTOVOLTAIC INVERTER  
The invention relates to a method for checking a separation point (14) between a photovoltaic inverter (1) and a power supply network (7) having multiple phases (L1, L2, L3) and a neutral conductor...
US20100091529 ELECTRICAL ENERGY CONVERTER  
An electrical energy converter (100) arranged to be connected to at least one source of electrical energy (114, 116) and to condition the energy generated by that source to be suitable for feeding...
US20110103103 POWER SUPPLY WITH LOW POWER CONSUMPTION HICCUP STANDBY OPERATION  
A power supply including a converter, a capacitance, and a hiccup control module. The converter converts an input voltage to both an output voltage and a preliminary standby voltage when in its...
US20140268935 AC/DC CONVERTING CIRCUIT AND STARTING METHOD THEREOF  
An AC/DC converting circuit and a starting method thereof are provided. An AC detection or a rectified AC voltage detection is disabled when the AC voltage or the rectified AC voltage not up to a...
US20110075446 Circuit for Converting a Pulsed Input Voltage to a DC Voltage  
The present disclosure presents a circuit for converting a pulsed input voltage to a DC output voltage. The circuit comprises input nodes for receiving the pulsed input voltage and output nodes for...
US20110273016 DISTRIBUTED POWER HARVESTING SYSTEMS USING DC POWER SOURCES  
A method for maintaining reliability of a distributed power system including a power converter having input terminals and output terminals. Input power is received at the input terminals. The input...
US20110141776 Power Supply with Output Overcurrent Detection and Error Latch Protection  
A power supply employs an error detecting circuit to output an error signal when detecting an overvoltage or overcurrent occurred in one of output powers and employs a latch trigger circuit to...
US20130308356 INPUT RELAY ARCHITECTURE FOR RECTIFYING POWER CONVERTERS AND SUITABLE FOR AC OR DC SOURCE POWER  
Power converter circuitry for converting power from a power source of any one of a number of power source types, and in which arcing at relays in the event of a shutdown is avoided. A shunt circuit...
US20110292687 High Voltage Capacitive Power Transformer  
A high voltage transformer for transforming electric power from a high voltage direct current source to a lower voltage direct current or to a lower voltage alternating current, without...
US20120057385 POWER CONTROL CIRCUIT  
This invention relates to a power control circuit, and, an inventive PWM controller, switching circuit, high voltage discharge circuit and magnetic amplifier are also introduced and used to...
US20120161523 PHOTOVOLTAIC POWER GENERATION SYSTEM  
A photovoltaic power generation system is disclosed, which can allow a user to easily acquire information on a photovoltaic inverter, easily control the photovoltaic inverter, and save electric...
US20130128635 METHOD FOR OPERATING A CONVERTER AND A SWITCHING CELL AND A CONVERTER  
Exemplary embodiments are directed to a method for operating a converter, wherein the converter includes a plurality of bridge branches having one or more switching cells connected in series. Each...
US20110157944 TEMPERATURE MONITORING FOR CIRCUIT BREAKERS  
Method for detecting and/or monitoring the temperatures of at least two electronic power switches, in particular semi-conductor power switches that are coupled with or arranged on a common cooling...
US20110026277 DRIVING CIRCUIT  
A driving circuit for an opto-coupler comprising a switched mode regulator configured to convert a first voltage to a second voltage, the switched mode regulator operable in accordance with a...
US20110291486 METHOD FOR DISTRIBUTED POWER HARVESTING USING DC POWER SOURCES  
A system and method for combining power from DC power sources. Each power source is coupled to a converter. Each converter converts input power to output power by monitoring and maintaining the...
US20110280047 Switching power adaptor circuit  
An improved structure for a switching power adaptor circuit, primarily providing a switching power adaptor circuit for a RCC (Ringing Choke Converter) system, in which a control circuit is mainly...
US20110280050 POWER CONVERTER  
The invention refers to a power converter and to a method for power conversion. The power converter includes a primary winding adapted to receive a primary alternating voltage. The converter...
US20110292692 OPTO-COUPLED SENSING  
The present invention provides an isolated regulating power converter with opto-coupled feedback of output (Vo) with respect to a reference level (Vset) for regulation to a converter controller....
US20110179291 POWER ADAPTOR DETECTION SYSTEM  
A power adaptor detection system includes a power adaptor device configured to receive electrical power at a first voltage and to convert the electrical power to a second voltage. The second...
US20130044524 PROTECTION CIRCUIT IN TRIAC APPLICATIONS  
Aspects of the disclosure provide a circuit. The circuit includes a transistor configured to control energy entering the circuit from a power supply, a capacitor coupled with the transistor to...
US20130141950 POWER CONVERTER AND INTEGRATED DC CHOKE THEREFOR  
A power conversion system and a DC link choke therefore are presented, in which a continuous core structure is provided with first and second legs around which four or more windings are located,...
US20130010504 POWER CONVERTER AND INTEGRATED DC CHOKE THEREFOR  
A power conversion system and a DC link choke therefore are presented, in which a continuous core structure is provided with first and second legs around which four or more windings are located,...
US20110051462 POWER FACTOR IMPROVEMENT CIRCUIT  
An over-voltage protection circuit of the invention is connected with a DC-DC converter having a structure in which a plurality of switching elements is serially connected to a direct current...
US20140198547 MULTILEVEL INVERTER  
There is provided a multilevel inverter capable of easily perform balancing of voltages by way of controlling switching of voltage dividing based on an offset between voltages divided by capacitors...