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US20070230226 Multilevel intelligent universal auto-transformer  
A power conversion device includes a first switched converter circuit coupled to a device input and a second switched converter circuit coupled to the first switched converter circuit and a device...
US20100296326 Power Circuit With Passthrough  
A power circuit device has a housing. A connection electrically couples AC power to an interior portion of the housing. A female electrical socket is coupled to the housing and is electrically...
US20120262958 POWER FACTOR CORRECTION CIRCUIT  
A power factor correction circuit is provided which may include a first switched-mode converter circuit comprising a first inductor, at least one second switched-mode converter circuit having a...
US20130181635 LED Driver with Primary Side Sensing  
The disclosed switching regulator, including a controller for a switching regulator, is adaptable to supplying, or controlling the supply of, regulated current to a load that is isolated from a...
US20130114321 INVERTER TOPOLOGY CIRCUIT, INVERSION METHOD AND INVERTER  
An inversion method and an inverter, in which a fifth switch tube, a sixth switch tube, a fifth diode, a sixth diode, and a first capacitor are added in the existing inverter circuit including a...
US20120307536 SYNCHRONOUS RECTIFIER DRIVER CIRCUIT RECTIFIER  
A synchronous rectifier includes a primary rectifier circuit and a secondary rectifier circuit. The primary rectifier circuit is configured to produce first and second half-rectified signals from...
US20130336024 Power Conversion System Including Two Transformers with Two Secondary Windings, and Drive Chain Comprising Such a Conversion System  
The power conversion system comprises: a first transformer adapted to be connected to an AC network, the first transformer including a first primary winding and two first secondary windings, andtwo...
US20060176720 Rotating rectifier with strap and diode assembly  
The present invention is a rectifier assembly having three phase straps with two diodes mounted to each phase strap. The rectifier assembly also includes a first support and a second support, which...
US20140029319 RECTIFIER MODULE FOR POWER CONVERSION CIRCUITS  
A rectifier module comprises a conductive housing made of injection molded aluminum or aluminum alloy. Diodes are inserted into recesses formed in the housing. The housing is placed at an...
US20110188277 CIRCUIT CONFIGURATION WITH A STEP-UP CONVERTER, AND INVERTER CIRCUIT HAVING SUCH A CIRCUIT CONFIGURATION  
An inverter circuit contains a first and second DC sources for providing a DC voltage, a common step-up converter for boosting the DC voltage, an intermediate circuit capacitor connected between...
US20130094267 EVEN-LEVEL INVERTER  
There is provided an even-level inverter, including: a voltage-dividing circuit dividing input DC power into an even number of voltage levels; a plurality of switching devices connected to...
US20120314465 CONTACTLESS ELECTRICITY-SUPPLYING DEVICE  
There is provided a contactless electricity-supplying device that can safely and efficiently supply power to a load. A contactless electricity-supplying device includes a plurality of...
US20140098579 SWITCHED-MODE POWER SUPPLY  
Consistent with example embodiments disclosed, there are switched-mode power supplies (SMPS) in which a signaling capacitor transmits information across a transformer of the power supply. Such...
US20140140105 HIGH EFFICIENCY AND FAST RESPONSE AC-DC VOLTAGE CONVERTERS  
The present invention discloses circuits and methods for high efficiency and fast response AC-DC voltage converters. In one embodiment, an AC-DC voltage converter can include: (i) a first stage...
US20130329463 HIGH EFFICIENCY AND FAST RESPONSE AC-DC VOLTAGE CONVERTERS  
The present invention discloses circuits and methods for high efficiency and fast response AC-DC voltage converters. In one embodiment, an AC-DC voltage converter can include: (i) a first stage...
US20110157935 Fully Resonant Power Supply  
A power supply produces one or more conditioned and scaled output voltages with low noise. The power supply has various components to produce a plurality of higher output voltages from a plurality...
US20140176086 CAPACITOR CHARGER SYSTEM, POWER MODULATOR AND RESONANT POWER CONVERTER  
A capacitor charger system has a resonant power converter to connect to a capacitor via a rectifier. The resonant power converter has a switch-based bridge network, an internal transformer, a...
US20120170323 CHARGING AC ADAPTOR  
A charging AC adaptor includes: a first diode bridge connected to an AC terminal; a chopper controller connected to the first diode bridge; an insulating air core transformer connected to the...
US20140334208 SYNCHRONOUS RECTIFICATION IN THE THREE-LEVEL INVERTER-CONVERTER TOPOLOGIES  
A power module for a three-level power inverter/converter that employs synchronous rectification for use in a uni-directional active rectifier mode to reduce static losses and enhance efficiency...
US20130286695 CONTROLLER FOR AN INVERTER CIRCUIT, INVERTER, AND METHOD FOR OPERATING AN INVERTER  
Damage to an inverter due to an excessively high start-up current, when using space vector control without a voltage sensor in conjunction with small connection inductances, can be prevented with a...
US20120092899 DYNAMIC CONVERTER TOPOLOGY  
Methods and apparatus of dynamic topology power converters are provided. One method includes monitoring at least one variable of the power converter and based on the at least one monitored...
US20140204641 SYSTEM FOR REGULATING THE OUTPUT OF A HIGH-VOLTAGE, HIGH-POWER, DC SUPPLY  
A system for regulating the output of a high-voltage, high-power DC supply, the system includes a high-voltage DC power supply, a storage capacitor, and at least one non-dissipative regulator...
US20140185334 SWITCHING POWER SUPPLY  
Aspects of the invention provide a switching power supply in which frequency reduction control in a light load condition both in a power factor correction converter and a DC-DC converter restrains...
US20130155742 MICRO-POWER RECTIFIER AND METHOD THEREOF  
A micro-power rectifier including a plurality of charge pumps and a method of the micro-power rectifier are provided. The charge pumps respectively include an input capacitor, an output capacitor,...
US20130016543 DC TO AC CONVERTER  
A DC to AC converter includes a first switch, a second switch, a first half bridge inverter, and a second half bridge inverter. The first switch includes a first terminal and a second terminal. The...
US20130322142 MULTILEVEL POWER CONVERTER  
An AC-DC power converter is provided. The power converter includes an electrical terminal including a positive node and a negative node. The power converter also includes a first switch coupled...
US20080239764 Forward power converter controllers  
This invention relates to control techniques and controllers for resonant discontinuous forward power converters (RDFCs). A method of controlling a resonant discontinuous forward converter (RDFC),...
US20140376294 Single-Phase Inverter and Three-Phase Inverter  
A single-phase inverter and a three-phase inverter are disclosed. The single-phase inverter includes a first and a second inverting topology unit, a first and a second direct-current voltage boost...
US20140043861 CONTROLLING AN ADAPTER TRANSFORMER VOLTAGE  
An adapter for electrical power that includes a rectifier coupled to a transformer with a primary coil and a secondary coil. The secondary coil includes a first end tap, a second end tap, and a...
US20120224400 ELECTRICAL EQUIPMENT  
A television includes a power supply circuit including a transformer that converts input voltage to output voltage, an input voltage monitoring circuit that monitors the input voltage based on a...
US20140036549 Switching Power Converter Dynamic Load Detection  
A secondary-side dynamic load detection system and method rapidly identifies when a dynamic load has been placed on the output (e.g., when an electronic device is re-connected to the switching...
US20130058140 METHOD FOR LIMITING THE GENERATOR VOLTAGE OF A PHOTOVOLTAIC INSTALLATION IN CASE OF DANGER AND PHOTOVOLTAIC INSTALLATION  
An inverter operable to interface with a generator that has a number of partial strings includes an inverter bridge circuit configured to connect to the partial strings, and a control device...
US20120188805 POWER SUPPLY CONVERSION CIRCUIT OF MULTI-PHASE POWER SUPPLY  
A power supply conversion circuit includes a PWM chip and many sub-circuits. Each sub-circuit includes an inductor, a first capacitor connected to ground, a first resistor connected in series with...
US20140204617 POWER CONVERTER WITH CURRENT FEEDBACK LOOP  
In a power converter, a deviation calculator calculates, in each cycle, a deviation between a value of an input electrical parameter of a switch circuit and a target value selected by a selector in...
US20120218792 DIGITAL PHASE ADJUSTMENT FOR MULTI-PHASE POWER CONVERTERS  
A multiphase power converter includes one or both of a phase control circuit and a valley switching locking circuit. The phase control circuit measures a phase difference between a first phase...
US20130343102 SYNCHRONIZED ISOLATED AC-AC CONVERTER WITH VARIABLE REGULATED OUTPUT VOLTAGE  
In an AC-AC converter comprising a primary side, a secondary side and a regulator, wherein the regulator comprises a voltage regulation circuit configured to determine an error voltage based on an...
US20110007526 FREQUENCY LIMITATION METHOD WITH TIME HYSTERESIS USED IN QUASI-RESONANT CONTROL  
A frequency limitation method used in quasi-resonant control of a switching regulator is disclosed. The switching frequency is limited through setting a minimum time limit, such as a minimum...
US20080079400 GENERATOR WITH HIGH PHASE ORDER  
An apparatus for producing electrical power from mechanical power, includes a generator with a rotor and a stator for conversion of mechanical power to a polyphase alternating current having more...
US20140376279 POWER ESTIMATION DEVICE USING COAXIAL WINDING TRANSFORMER  
Disclosed is a power estimation device using a coaxial winding transformer which includes: a switching control unit that generates primary current by performing switching control on power source; a...
US20130027981 HOLD-UP TIME EXTENSION CIRCUIT FOR A POWER CONVERTER  
A power system has a power converter adapted for converting a first input voltage at an input thereof to a first output voltage at an output thereof, and a hold-up time extension circuit comprising...
US20140063870 APPARATUS AND METHODS FOR RESTORING POWER CELL FUNCTIONALITY IN MULTI-CELL POWER SUPPLIES  
A method is provided for operating a multi-cell power supply that includes multiple series-connected power cells in each of multiple legs. Each power cell includes a bypass device that may be used...
US20120163048 INVERTER, POWER GENERATION SYSTEM AND METHOD OF OPERATING A POWER GENERATION SYSTEM  
The invention relates an inverter that may be set up as part of a power generation system for the connection of a number of substrings, which, using DC switches, can be connected to each other in...
US20120300525 CONVERTER ARRANGEMENT AND METHOD IN CONNECTION WITH CONVERTER ARRANGEMENT  
An exemplary converter arrangement and method in connection with the arrangement includes a converter arranged in a closed container or similar structure. The container has a high voltage...
US20140133190 ISOLATED SWITCH-MODE DC/DC CONVERTER WITH SINE WAVE TRANSFORMER VOLTAGES  
A converter includes a transformer including a primary winding and a secondary winding, a primary-side circuit connected to first and second input terminals and to the primary winding and including...
US20140192570 POWER GENERATION SYSTEM AND METHOD FOR OPERATING A POWER GENERATION SYSTEM  
According to an embodiment, a power generation system is provided comprising a power generator; a plurality of converter modules, each converter module having a DC link, wherein the DC link of each...
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...
US20140328096 ACTIVE POWER FACTOR CORRECTION CIRCUIT FOR A CONSTANT CURRENT POWER CONVERTER  
The present disclosure provides techniques for power factor correction on a constant current system. In an example embodiment, the present disclosure provides a power factor correction circuit...
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...