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US20110013427 UTILITY GRID POWER AVERAGING AND CONDITIONING  
As system is disclosed for providing power averaging for the utility grids and more specifically to utilizing a unique EESU unit with the capability to store electrical energy over 24 hour periods...
US20140112032 WIND TURBINE FAULT DETECTION CIRCUIT AND METHOD  
A wind turbine fault detection circuit and method is disclosed herein. In a described embodiment, the wind turbine fault detection circuit comprises a magnetometer in the form of a hall-effect...
US20120217153 Self-Tuning Power Supply  
A pulse width encoded switching power supply, which may be electrically connected to an electroluminescent (EL) material is described. The power supply exploits both mechanical and electronic...
US20130235624 Electric Inverter  
Electrical frequency converter (20) for coupling an electrical power supply grid (21) with an electrical drive (22) is described. One rectifier (23) and one inverter (24) are provided, in which...
US20130200831 POWER SUPPLY DEVICE  
A power supply device includes: an inverter that converts a DC power supplied from a battery pack into an AC power and outputs the AC power; and an adapter shapes a waveform of the AC power...
US20110286580 High-voltage x-ray generator  
A power supply for a device which has a load, comprising a first resonant generator and a second resonant generator, coupled in parallel, each generator having a phase output. The power supply...
US20140104898 WIRELESS ELECTRIC POWER RECEIVER FOR WIRELESSLY REGULATING ELECTRIC POWER USING SWITCH  
A wireless electric power receiver for receiving wireless electric power from a wireless electric transmitter is provided. The wireless electric power receiver includes an electric power receiving...
US20140104897 Control Method During Zero-Crossing Operation Of Bridge Arms In UPS  
A control method is disclosed that involves controlling zero-crossing operation of bridge arms in a UPS, wherein the UPS has a rectifying bridge with first and second switching transistors, a...
US20130343092 DC/DC CONVERTER WITH SELECTABLE COUPLING RATIO AND POWER INVERTER USING THE SAME  
The DC/DC converter has a full bridge circuit, a transformer and a rectifying unit. The full bridge circuit is connected to a source DC voltage. The transformer is connected to full bridge circuit...
US20140021374 POWER SOURCES  
Methods and systems are described for providing a high frequency high voltage source. For example, a power source for use in a particle accelerator, an arc welder or an inductive heater.
US20130229834 Transformer Construction  
The invention relates to a transformer construction comprising a plurality of transformer cores configured to share magnetic flux paths and, as a result, at least one of the cores comprises a post...
US20150214888 INTEGRAL INVERTER AND SOLAR CELL MODULE INCLUDING THE SAME  
Discussed is an integral inverter usable with a solar cell module including a solar cell panel. The integral inverter includes a terminal connected to the solar cell panel, an inverter member...
US20090265040 Matrix Converters For Wind Energy Conversion Systems  
The invention is an efficient matrix converter for wind energy conversion systems (WECS) using permanent magnet DC generators, incorporating control algorithms integrated with rotor aerodynamics,...
US20140312823 Harmonics Suppression in a Power Delivery Device  
Embodiments described herein provide a power delivery system, as well as a method of configuring the power delivery system. The power delivery system includes two or more rectifiers electrically...
US20110157928 DC-TO-AC CONVERTING CIRCUIT WITH WIDE INPUT VOLTAGE  
A DC-to-AC converting circuit includes a transformer, a first modulation switching circuit, a second modulation switching circuit and a third modulation switching circuit, an inverter switching...
US20140204632 BYPASSED CASCADED CELL CONVERTER  
In a converter for converting energy from a generator to a power network, wherein the converter comprises multiple power modules, wherein each power module includes at least two power cells and a...
US20120081933 PHOTOVOLTAIC POWER CONDITIONING UNITS  
We describe a photovoltaic (PV) panel power conditioning circuits, in particular for a PV panel with multiple sub-strings of connected solar cells. The power conditioning unit comprises a set of...
US20140362620 MULTILEVEL INVERTER  
A multilevel inverter having a configuration adequate to enhance efficiency while reducing conduction loss is disclosed, the multilevel inverter including a rectifier, a smoothing unit and an...
US20150117073 STABLE REGENERATIVE BI-DIRECTIONAL CELL FOR BRIDGE POWER INVERTERS  
A high efficiency, multi-mode, regenerative AC-DC-AC inverter power system contains an inverter bridge, a bi-phase matrix (BP-Mtx) containing reverse current oriented, series-connected sets of...
US20120294050 INVERTER GENERATOR  
In an inverter generator having a first, second and third inverters, a first, second and third controllers adapted to control turning ON/OFF of switching elements thereof and to operate the first...
US20150138849 PRE-CHARGING CIRCUIT OF INVERTER  
A pre-charging circuit of inverter is disclosed, the pre-charging circuit of inverter including a relay arranged between an output node of the rectifier and an input node of the DC-link capacitor,...
US20150049525 INVERTER AND POWER SUPPLYING METHOD THEREOF AND APPLICATION USING THE SAME  
An inverter and a power supply method thereof and an application thereof are provided. The inverter includes a DC-DC conversion circuit, an inverting circuit and an auxiliary power circuit. The...
US20130100716 HIGH-POWER MEDIUM-VOLTAGE DRIVE POWER CELL  
The present invention provides a high-power medium-voltage drive power cell, which comprises: a rectifier module for rectifying the three-phase AC input voltage to get a DC voltage; an IGBT...
US20150130379 GROUND FAULT DETECTING CIRCUIT AND POWER CONVERTING DEVICE INCLUDING THE SAME  
In the ground fault detecting circuit, one terminals of first to third resistance elements are connected to first to third AC lines, respectively, the other terminals of the first to third...
US20110103105 POWER TRANSFORMER AND POWER CONVERTER INCORPORATING SAME  
Embodiments of the present invention provide novel techniques for using multiple 18-pulse rectifier circuits in parallel. In particular, each rectifier circuit may include an autotransformer...
US20110261597 INVERTER TYPE ENGINE GENERATOR  
Generator output specifications according to destination are satisfied by an alternator with a single output band and a generator output voltage is made automatically adjustable in accordance with...
US20130182468 WIND POWER CONVERTER  
A wind power converter comprises a multiple of phase power converters, each of which being adapted to convert power output from a corresponding phase of a wind generator to a corresponding phase...
US20070159858 Bi-directional energy conversion system  
An alternating current (AC) to direct current (DC) high efficiency conversion architecture comprises an AC-to-DC conversion input stage operative to receive an instantaneous AC input, a DC output...
US20140333205 STABILIZATION CIRCUIT FOR LOW-VOLTAGE LIGHTING  
An electronic transformer stabilization circuit includes a detection circuit and a reactive load. The detection circuit may be configured to receive a transformer output or a transformer signal...
US20120250372 GRID TIED INVERTER, SYSTEM AND METHOD  
A grid tied inverter comprising an unfolding circuit connectable to an electricity grid; and a DC to DC current fed converter operable to generate a current waveform from a battery, the current...
US20110127837 POWER CONVERSION APPARATUS  
A power conversion apparatus includes an inverter for converting DC power to AC power for supply to a load, a converter for converting AC power from an AC power supply to DC power for supply to...
US20130121041 POWER CONVERTER BASED ON H-BRIDGES  
A power converter includes an active front end (AFE) that is coupled by a dc link stage to a plurality of H-bridge inverters. One or more multi-phase electro-magnetic energy conversion devices,...
US20120294049 PARALLEL RUNNING CONTROL APPARATUS FOR INVERTER GENERATORS  
In a parallel running control apparatus for an inverter generator A having a first, second and third inverters each connected to three windings wound around an alternator driven by an engine and...
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...
US20140286059 SPARSE AND ULTRA-SPARSE PARTIAL RESONANT CONVERTERS  
The AC portion of the input of the ultra-sparse partial resonant power converter contains three pairs of forward-conducting-bidirectional-blocking switches connected in a first direction, and two...
US20120163044 MULTILEVEL POWER CONVERTER OR INVERTER ARRANGEMENT USING H BRIDGES  
Multilevel voltage arrangement having a transformer and a power converter or inverter comprising one or more common DC links connectable to a power source, said arrangement comprising one first...
US20060233000 Power converter motor drive btb system and system linking inverter system  
The invention provides a bidirectional power converter, that can be connected directly to an AC system without interposing a transformer, that is small in size, light in weight, inexpensive to...
US20140104896 REGENERATIVE VOLTAGE DOUBLER RECTIFIER, VOLTAGE SAG/SWELL CORRECTION APPARATUS AND OPERATING METHODS  
Single and multiphase regenerative voltage doubler rectifiers, sag/swell corrector apparatus, and operating methods are presented in which rectifier switching devices are selectively pulse width...
US20130176753 Three Phase Active Rectifier System  
A voltage source inverter comprises a rectifier converting AC power to DC power at an output. An inverter receives DC power and converts the DC power to AC power. A link circuit is connected...
US20120081934 PHOTOVOLTAIC POWER CONDITIONING UNITS  
We describe a photovoltaic (PV) panel system comprising a PV panel with multiple sub-strings of connected solar cells in combination with a power conditioning unit (microinverter). The power...
US20140293663 Modular Configurable Multi-Megawatt Power Amplifier  
In an embodiment, a power converter includes: a plurality of power amplifier units, each having: a plurality of slice each with a power conversion module including an AC/DC/AC converter; a mains...
US20140268928 POWER CELL BYPASS METHOD AND APPARATUS FOR MULTILEVEL INVERTER  
Multilevel inverters, power cells and bypass methods are presented in which a power cell switching circuit is selectively disconnected from the power cell output, and a bypass which is closed to...
US20130010505 METHOD FOR CONTROLLING A POWER CONVERTER IN A WIND TURBINE GENERATOR  
A method for controlling a power converter in a wind turbine generator, the power converter being connected to a power grid, the method comprising obtaining an alternating current (AC) line...
US20150098257 MULTIFUNCTION POWER CONVERTER WITH OPTION FOR INTEGRATED MAGNETICS  
Power converter modules and parallel conversion systems are presented in which the modules are provided in a rollable enclosure having AC and DC electrical connections, and an interior including a...
US20150200603 INTEGRAL INVERTER AND SOLAR CELL MODULE INCLUDING THE SAME  
Discussed is an integral inverter usable with a solar cell module including a solar cell panel. The integral inverter includes a terminal connected to the solar cell panel, a bypass diode...
US20130181532 HIGH-VOLTAGE POWER CONVERTER  
The present invention relates to a high-voltage power converter comprising a number of controllable switching valves, each switching valve comprising a plurality of series connected switching...
US20140211520 SYSTEM AND METHOD FOR POWER CONVERSION  
A grid-side transformerless power conversion system configured to perform power conversion between a power grid and a load, the transformerless power conversion system includes a first converter,...
US20130026834 POWER CONVERSION DEVICE  
An uninterruptible power supply device including a filter for rejecting, in the voltage of a power supply node between a converter and an inverter, a ripple voltage of a frequency twice a...
US20090219696 POWER CONVERSION DEVICE AND FABRICATING METHOD FOR THE SAME  
A power conversion device in which the inductance of a main circuit is reduced, a surge voltage is suppressed, elements are properly cooled, which is miniaturized and reduced in weight as a whole,...
US20150009726 GROUND SCHEME IDENTIFICATION METHOD  
The present techniques include methods and systems for detecting the grounding condition of an electrical system to automatically determine a suitable electrical drive configuration. The drive...