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US20130155741 POWER SUPPLY DEVICE AND ELECTRIC POWER CONVERSION DEVICE USING THE SAME  
A comparator compares a voltage of a node into which electric current flows from a system of a first voltage and a reference voltage for maintaining the node at a second voltage. A step-up-type...
US20110286247 SENSING ARRANGEMENTS  
A sensing arrangement and method a sense winding is used to provide a voltage which represents the voltage appearing across an in-circuit magnetic component. In a flyback phase, when the component...
US20100309689 Bootstrap Circuitry  
This invention generally relates to a bootstrap circuit for a switch mode power supply, a controller for a switch mode voltage converter, a switch mode flyback converter comprising the bootstrap...
US20110255317 INTELLIGENT MULTI-STAGE VARIABLE-POWER SWITCH POWER SUPPLY DEVICE  
An intelligent multi-stage variable-power switch power supply device has an output of a bridge rectifier connected with the input of an EMI filter and the output of the EMI filter connected with a...
US20120008354 DISCHARGE LOOP FOR POWER SUPPLY CIRCUIT AND ACTIVE CONTROL CIRCUIT THEREOF  
Provided is a discharge loop for power supply and the active control circuit thereof for actively regulating the discharging operation of the discharge loop of the power supply. The inventive...
US20100301793 POWER SUPPLY ARRANGEMENT  
The invention relates to a frequency converter, which is fitted to supply power between a polyphase alternating electricity source and an electric machine. The frequency converter comprises a...
US20130155747 HIGH-EFFICIENCY, THREE-LEVEL, SINGLE-PHASE INVERTER  
A highly efficient transformerless inverter and a method of controlling the same. The inverter is designed for use in a distributed power generation system, such as a home having photovoltaic cells...
US20130194838 THREE-PHASE SOFT-SWITCHED PFC RECTIFIERS  
A low input-current harmonic three-phase boost rectifier includes an input stage for receiving a three-phase input voltage in relation to a neutral node and an output stage adapted to couple to at...
US20110249478 POWER OUTPUT STAGE FOR A PULSE-CONTROLLED INVERTER  
A power output stage for a pulse-controlled inverter includes a half-bridge. The half-bridge has a control terminal and power terminals. The power terminals include a terminal for a positive supply...
US20130027979 CONVERTERS AND INVERTERS FOR PHOTOVOLTAIC POWER SYSTEMS  
A power system includes a plurality of DC/DC converters and a DC/AC inverter. The plurality of DC/DC converters having outputs electrically connected in parallel for supplying a DC voltage bus to...
US20130010500 CONVERTERS AND INVERTERS FOR PHOTOVOLTAIC POWER SYSTEMS  
A power system includes a plurality of DC/DC converters and a DC/AC inverter. The plurality of DC/DC converters having outputs electrically connected in parallel for supplying a DC voltage bus to...
US20120081937 Converters and Inverters for Photovoltaic Power Systems  
A power system includes a plurality of DC/DC converters and a DC/AC inverter. The plurality of DC/DC converters having outputs electrically connected in parallel for supplying a DC voltage bus to...
US20110235376 MULTI-LEVEL PARALLEL PHASE CONVERTER  
A multi-level parallel phase power converter has a power source, a converter, and an electrical node. The converter includes multiple converter modules. Each of the converter modules has multiple...
US20120170338 CONVERTER  
A voltage source converter (10) for use in three-phase high voltage DC power transmission and reactive power compensation. The voltage source converter (10) comprises three converter limbs...
US20080231127 ELECTRICAL MACHINE WITH ELECTRONIC POWER UNIT FOR CONVERSION  
A matrix converter (3) for the conversion of a polyphase alternating current (6) into a desired alternating output current (7) in which m phases of the polyphase alternating current (6) are...
US20100052577 POWER SUPPLY SYSTEM FOR A BUILDING  
An electrical system, which includes a light switch housing and an AC-to-DC converter carried by the light switch housing. The electrical system includes an input power line which provides an AC...
US20110080759 FEEDING SYSTEM FOR AN INDUCTIVE LOAD FROM AN ENERGY SOURCE WITH VARIABLE POWER  
A system is provided for the feeding of an inductive load, with electric power of continuous current, generated from an energy source and, more in particular, to a feeding system for a vibratory...
US20120201060 DYNAMIC ELECTRICAL CONVERTER SYSTEM  
A dynamic electrical converter system configured to receive a variable voltage input which is then converted to a proper electrical configuration for a load. The converter assembly utilized...
US20110075455 DC-AC Inverters  
A method of operating a DC-AC inverter to produce AC power having alternating positive and negative half cycles is disclosed. The inverter includes an input connected to a DC power source, an...
US20130286702 ADJUSTABLE SPEED DRIVE LIFETIME IMPROVEMENT SYSTEM  
The present techniques include methods and systems for operating an inverter to maintain a lifespan of the inverter. In some embodiments, the switching frequency and/or the output current of the...
US20140009080 INDUCTOR CURRENT DETECTION CIRCUIT AND LED DRIVER  
The present invention pertains to an inductor current detection circuit in a switching mode power supply, and a light-emitting diode (LED) driver thereof. In one embodiment, an inductor current...
US20130223110 POWER CONVERSION SYSTEM AND ASSOCIATED METHOD  
It allows connecting or disconnecting polyphase conversion stages (2a, 2b), comprising at least two polyphase back-to-back conversion stages (2a, 2b) connected between a rotary electric machine (3)...
US20130258726 ARRANGEMENT FOR TRANSMITTING POWER BETWEEN A DC POWER LINE AND AN AC POWER LINE  
An arrangement transmits power between a DC power line and an AC power line carrying a voltage having a number of phases. The arrangement includes a number of transformers, one for each phase and a...
US20110013426 SNUBBER CAPACITOR GENERATING AN AUXILLARY POWER SUPPLY VOLTAGE  
An integrated circuit (IC) forming a pulse-width modulator controls the switching operation of an output stage of a switching power supply. A snubber capacitor that is coupled to a primary winding...
US20070139976 Power management module and method of manufacture  
A power management module, provides an inductor including one or more electrical conductors disposed around a ferromagnetic ceramic element including one or more metal oxides having fluctuations in...
US20120069609 METHOD FOR LOWERING POWER LOSS AND CIRCUIT  
A method and circuit for suppressing a bias current and decreasing power consumption. A current suppression circuit is coupled to a circuit element, which is capable of conducting the bias current....
US20080316783 Interleaved power factor correction pre-regulator phase management circuitry  
Methods for power factor correction (PFC) and for reducing conduction losses and switching losses in a power converter as well as the power converter and phase management circuitry for the power...
US20120106206 POWER SUPPLY WITH SINGLE STAGE CONVERTER FOR PERFORMING POWER FACTOR CORRECTION AND RESONANT CONVERSION  
The invention discloses a power supply having a single stage converter for performing power factor correction to reduce high-frequency harmonics in the input current and performing resonant...
US20110280054 INVERTER CIRCUIT  
This inverter circuit includes first and second switching elements and an output transformer which has a first primary winding connected in series between the first switching element and the second...
US20130279227 CAPACITOR EMBEDDED BETWEEN BUSBARS, ELECTRIC POWER DEVICE AND ELECTRIC POWER CONVERSION DEVICE  
The present invention provides an inter-bus-bar built-in capacitor capable of reducing the size of a capacitor used in an inverter or the like or downsizing the capacitor, and provides power...
US20070211504 AC-DC converter circuit and power supply  
An AC-DC converter and a power supply are described.
US20120099351 ELECTRONIC APPARATUS  
An electronic apparatus having reinforced power saving and safety functions, the electronic apparatus may include: a power supply which converts alternating current (AC) power input from an AC...
US20130135903 Hybrid DC/DC Converters and Methods  
An embodiment hybrid dc/dc converter comprises a first power source and a low power converter coupled to the first power source. The low power converter generates an output connected in series with...
US20120175964 SERIALLY CONNECTED INVERTERS  
A photovoltaic power generation system, having a photovoltaic panel, which has a direct current (DC) output and a micro-inverter with input terminals and output terminals. The input terminals are...
US20140022823 Temperature Compensation of Output Diode in an Isolated Flyback Converter  
An isolated flyback converter having temperature compensation (TC) uses primary side sensing and an output diode, the output diode having a variable voltage drop related to its temperature. A...
US20110103110 Method of operating an inverter and inverter control arrangement  
A method of operating an inverter for converting a DC power into AC power by use of a pulse width modulation switching scheme is provided is disclosed. The inverter is controlled by use of the...
US20070133230 Multiphase Voltage Sources Driven AC_LED  
Multiphase voltage sources are used in driving an AC_LED; different light timing is achieved by changing the relative phase or frequency of the voltage sources. Different light color mixing is also...
US20110002150 Rectifier Circuit with High Efficiency  
Disclosed is a rectifier circuit in order to adaptively reduce a threshold voltage of a diode module constituting the rectifier circuit using an output voltage of the rectifier circuit. A PMOS...
US20130051092 APPARATUS FOR A MICROINVERTER PARTICULARLY SUITED FOR USE IN SOLAR POWER INSTALLATIONS  
A microinverter is disclosed for use in a solar power installation. The microinverter incorporates a voltage-to-current control loop that initially converts output current produced by a...
US20090174361 Energy Harvesting In RFID Systems  
Methods, systems, and apparatuses for providing power to devices that are part of RFID systems are described. Energy is harvested at portable/mobile devices, stored and conditioned to provide...
US20140003093 MULTI-LEVEL CONVERTER, AND INVERTER HAVING THE SAME AND SOLAR POWER SUPPLY APPARATUS HAVING THE SAME  
There are provided a multi-level converter capable of outputting power having various voltage levels with respect to a single input power supply by using a simple circuit, an inverter having the...
US20120281446 PREVENTING LOAD DUMP OVERVOLTAGES IN SYNCHRONOUS RECTIFIERS,  
In a method for reducing load dump overvoltages during operation of a synchronous rectifier for a polyphase alternating current having a number of inputs which correspond to the number of...
US20110063878 POWER-SUPPLY CONTROLLER  
An embodiment of a controller for a power supply includes circuitry that is operable to allow the power supply to operate as follows. During a first portion of a supply period, a first current...
US20110051465 RESONANT SWITCHING POWER SUPPLY DEVICE  
Provided is a technique of making the leakage inductance of a transformer serve as a current resonant reactor and connecting a stray capacitance Cf1 in parallel to the leakage inductance in a...
US20110103115 VOLTAGE SOURCE CONVERTER  
A Voltage Source Converter having at least one phase leg connected to opposite poles of a direct voltage side of the converter and comprising a series connection of switching cells has inductance...
US20110286244 ADJUSTABLE SPEED DRIVE LIFETIME IMPROVEMENT METHOD  
The present techniques include methods and systems for operating an inverter to maintain a lifespan of the inverter. In some embodiments, the switching frequency and/or the output current of the...
US20110075445 Wide range DC power supply with bypassed multiplier circuits  
A power supply provides dc power over a wide range of output voltages at full operating power by utilizing multiplying circuits (200) supplied by a source of high-frequency alternating current...
US20100202171 Portable power supply for laboratory equipment  
A portable power supply for controlling laboratory experiments, the power supply includes input terminals that receive control signals and power terminals that supply power to laboratory devices....
US20110134674 Active rectifier and method for energy harvesting power management circuit  
An active rectifier (12) couples a first input voltage (Vin1) to a first electrode of a first transistor (M3) having a second electrode coupled to an output (4) conducting an output voltage (Vout),...
US20130336011 Switched Mode Power Supply and a Method for Operating a Switched Mode Power Supply  
A switched mode power supply includes a first switch connected to an input terminal for inputting an input voltage, a second switch, an inductor and an output capacitor, a transformer connected to...