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9007789 Electric circuit for high voltage power conversion  
The present invention provides an electric circuit wherein a multi-phase bridge is connected in series with a plurality of single-phase bridges. The multi-phase bridge is composed of a plurality...
9001543 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...
9001538 Switching power supply apparatus  
A transformer that realizes ZVS operation includes a primary winding and a secondary winding. A control circuit turns switching elements on and off in a complimentary manner in order to repeatedly...
9001536 Voltage smoothing circuit for smoothing voltage from power supply  
A voltage smoothing circuit is configured to smooth a voltage outputted from a power supply portion. The voltage smoothing circuit includes first and second smoothing capacitors, a first balancing...
9001535 Power quality device and its control apparatus  
A control apparatus for a power quality device comprises: a power quality analysis module, for sampling a power supply network to obtain a power quality information, and performing an analysis and...
9001534 Transformer driver circuit with IC protection circuitry  
A transformer driver circuit couples to a transformer having a primary winding, a secondary winding, and a transformer tap that is connected to a first voltage source. The primary winding...
9001544 Inverter device  
In an inverter device, a first three-level circuit includes first to fourth preceding-stage switch elements connected in series between a first input end and a ground and a first charging and...
9002529 Power control method and device  
The present invention discloses a method and an apparatus for power control. An apparatus for power control in accordance with an embodiment of the present invention can include: a voltage...
9001539 AC-DC resonant converter that provides high efficiency and high power density  
The disclosed embodiments provide an AC/DC power converter that converts an AC input voltage into a DC output voltage. This AC/DC power converter includes an input rectifier stage which rectifies...
9001532 Method of forming a synchronous rectifier controller and structure therefor  
In one embodiment, a synchronous rectifier controller is configured to initiate forming an off-time interval for a first period of time responsively to the controller forming a disable state of a...
9001531 Control device for DC-DC converter and control method controlling the same  
A control device for a DC-DC converter, which receives an input power and generates an output voltage, includes a first error amplifier for comparing a reference voltage signal and the output...
RE45453 Inverter, more specifically for photovoltaic plants  
On an inverter (1) for converting an electric direct voltage, in particular of a photovoltaic direct voltage source into an alternating voltage with a direct voltage input with two terminals (DC+,...
9001533 Feedback circuit and power supply device including the same  
Disclosed are a feedback circuit and a power supply device including the same. The power supply device converts input voltage into output voltage suitable for load condition according to a...
9001540 Power source apparatus  
A power source apparatus includes: a first series circuit that has a first rectifier element, a first switching element, and a third rectifier element; a second series circuit that has a second...
9000705 Power controller  
There is provided a power controller including a drive circuit connected to a DC power supply to apply a first voltage to the drive circuit and configured to supply power to an external load, a...
9000744 Switch control device with zero-cross point estimation by edge detection, power supply device comprising the same, and switch control method with zero-cross point estimation by edge detection  
Provided are a switch control device, a switch control method, and a power supply device. The present invention generates power voltage required to operate the switch control device by using...
9001541 Switch control circuit, power factor corrector including the same, and driving method of the power factor corrector  
The present invention relates to a switch control circuit, a power factor corrector including the same, and a driving method thereof. According to an exemplary embodiment of the present invention,...
9000601 Power semiconductor module  
The respective main electrodes of the semiconductor switching elements such as IGBTs, which are respectively mounted on the plurality of insulating boards, are electrically connected to each other...
9000742 Signal generating circuit  
A signal generating circuit includes: a first signal amplifying circuit arranged to generate a first amplified signal according to a first supply current, a reference signal, and an output signal...
9001542 Current-source power converting apparatus  
A current-source power converting apparatus according to an embodiment includes an inverter and a drive controller. The inverter includes, in every output phase, a plurality of switching elements...
9000615 Solar power module with safety features and related method of operation  
A solar power module, and related method of operation, that protects the bypass diodes in the solar power module from overheating due to partial shading, and also protects firefighters and...
9000825 Active diode circuit  
Various active diode circuits are described. In one example, there is provided an active diode circuit having an active diode and a control circuit. The active diode includes an anode terminal, a...
9001537 Power factor correction circuit  
A power factor correction (PFC) circuit includes an AC power, a first bridge arm and a second bridge arm. The first bridge arm includes first and second switches connected in series with each...
9001530 Integrated circuit with voltage conversion  
An integrated circuit may include a signal generator configured to generate a switching signal and a switching unit coupled to the signal generator. The switching unit may be configured to...
9001529 System and method for power transfer control based on available input power  
The present invention employs system and method in for distinguishing between power capabilities of various external power sources and a system that can communicate the identified power...
8995153 Passive power factor correction circuit  
The disclosure relates to a passive power factor correction circuit. The passive power factor correction circuit comprises: a filtering device being used for decreasing high order harmonic of an...
8995133 Electrical connection assembly  
An electrical connection assembly includes a metal housing and an electrical module having a plurality of electrical components mounted on a component base. The base is supported on the housing. A...
8995155 Photovoltaic power conditioning system and method employing parallel and series connection structures  
A photovoltaic power conditioning system and method is provided. The system includes an isolated DC/DC converter (41), a DC/AC inverter (42), and a sine filter (43). The isolated DC/DC converter...
8994304 Method for controlling interior permanent magnet synchronous motor  
Disclosed is a method for controlling a permanent magnet synchronous motor to maximize use of voltages of a battery by voltage phase control within weak magnetic flux area and to achieve...
8994279 Method and apparatus to control a DC-DC converter  
Control circuits and techniques are provided for use with DC-DC converters. The circuits and techniques may, in some implementations, be used with LED driver systems. In some embodiments control...
8995157 Sensing and control for improving switched power supplies  
A power converter and a method of operation thereof is disclosed including an input, an output, a sensor unit, a switched power converter, and a processor module. The power converter may convert...
8995151 Power electronic converter  
A power electronic converter for high/medium voltage direct current power transmission and reactive power compensation comprises a primary converter unit and an auxiliary converter unit, the...
8994355 DC-DC down-converter with time constant comparison regulation system  
A voltage converter device includes a voltage regulator having a supply terminal for receiving a supply voltage and an output terminal for providing a regulated voltage. A voltage multiplier is...
8995156 DC/DC converter with resonant converter stage and buck stage and method of controlling the same  
A direct current to direct current (DC/DC) converter includes a resonant converter stage, a buck stage, and a processor apparatus. The resonant converter stage includes a bridge circuit. The buck...
8994318 Electrical on-board network and method for operating an electrical on-board network  
An electrical on-board network of a vehicle, having at least two power circuits and an electrical machine allocated to a drive of the vehicle. The electrical machine has at least two phase...
8995159 High-frequency matrix converter with square wave input  
A device for producing an alternating current output voltage from a high-frequency, square-wave input voltage comprising, high-frequency, square-wave input a matrix converter and a control system....
8994462 Circuit and method of frequency jitter, and application thereof in switched-mode power supply (SMPS)  
The present invention is to provide a frequency jitter circuit and a method for generating frequency jitter. The frequency jitter circuit, comprising: an oscillating circuit, configured to...
8995154 Power supply circuit system  
A power supply circuit system includes a ring oscillator provided with a variable resistance circuit, a charge pump circuit outputting a boosted voltage in response to an oscillation output signal...
8995152 Inverter circuit  
An inverter circuit 40 with reduced loss in semiconductor elements when starting up, having switching elements Q1 and Q2 in series, and connected to both ends of a direct current power source...
8995621 Compact X-ray source  
A compact x-ray source can include a circuit (10) providing reliable voltage isolation between low and high voltage sides (21, 23) of the circuit while allowing AC power transfer between the low...
8995128 Power conversion apparatus  
A power conversion apparatus according to an embodiment includes a case that can be provided on a mounting wall surface and places therein an electric reactor and a power conversion board for...
8995158 Circuit arrangement with a rectifier circuit  
A rectifier circuit includes first and second load terminals, a first semiconductor device having a load path and configured to receive a drive signal, and a plurality of second semiconductor...
8995150 Primary side sense output current regulation  
The embodiments disclosed herein describe a method of a controller to maintain a substantially constant average output current at the output of a switching power converter. In one embodiment, the...
8988908 Capacitive power supply with surge current limitation  
A capacitive power supply including: a first capacitive element and a first resistive element in series between a first terminal of a power switch and at least one rectifying element having a...
8988906 Power conversion apparatus  
A power conversion apparatus includes an inverter circuit, a system voltage measurement unit measuring a system voltage, a voltage drop detector detecting a voltage drop of a power system, based...
8988900 DC capacitor-less power converters  
Three resonance-based universal power converter topologies are disclosed. One includes a partially resonant parallel L-C link and incorporates intermediate cross-over switching circuits between...
8988915 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....
8988182 Transformers and methods for constructing transformers  
Transformers and methods of constructing transformers are disclosed. In one embodiment, a method of constructing a transformer includes wrapping a first primary winding around a core, wrapping a...
8988136 Hybrid charge pump and method for operating the same, power management IC comprising the pump  
A hybrid charge pump including a hybrid circuit configured to snub an over shoot or under shoot present in an input pulse in a snubbing operation if a level of the pulse is a first level, store...
8988904 Power supply with integrator for controlling current  
The present invention relates to a power supply for controlling current that uses a flyback converter for electrical insulation between a load line unit and the power supply for controlling...