Matches 1 - 50 out of 149 1 2 3 >


Match Document Document Title
US20130250635 CONTROL TECHNIQUES FOR PHOTOVOLTAIC POWER PLANTS  
A photovoltaic power plant includes solar cells and inverters that convert direct current generated by the solar cells to alternating current. The reactive powers generated by the inverters are...
US20150016161 POWER CONVERTER  
A power converter includes inverters, AC sides of the inverters being connected in parallel, a power command value determiner configured to determine a first power command value and a second power...
US20140016380 MULTI-LEVEL VOLTAGE CONVERTER  
A multi-level voltage converter includes a multi-point converter circuit and at least one full bridge inverter circuit. The multi-point converter circuit is configured for converting a DC voltage...
US20110216562 DC-TO-DC POWER CONVERSION  
This disclosure includes systems and methods for managing the interaction between inverter-based DC and other power systems. In one embodiment, a 3-phase isolation transformer is fluxed to create...
US20140119075 Parallel Connected Inverters  
A distributed power system wherein a plurality of power converters are connected in parallel and share the power conversion load according to a prescribed function, but each power converter...
US20120319490 Parallel Connected Inverters  
A distributed power system wherein a plurality of power converters are connected in parallel and share the power conversion load according to a prescribed function, but each power converter...
US20110235377 Circuit and Method for Generating an AC Voltage from a Plurality of Voltage Sources Having a Temporally Variable DC Output Voltage  
A circuit comprising at least one parallel-connected partial circuit for feeding at least one inverter circuit. A partial circuit consists of an unregulated voltage source having a temporally...
US20060250828 Inverter power electronics design  
An inverter design with makes use of an integrated power module in place of discrete transistors. The use of an integrated power module facilitates the creation of a field replaceable component...
US20150016160 POWER CONVERTER  
A power converter includes inverters, AC sides of the inverters being connected in parallel, and a controller configured to control total output power of the inverters by controlling output power...
US20120026764 CONTROL SYSTEM FOR HIGH-EFFICIENCY OPERATION IN PARALLEL INVERTER INSTALLATIONS  
A control system for parallel connected inverter legs energized by a power source and configured for servicing a load is disclosed. The invention facilitates the number of running inverter legs to...
US20130242628 SOLAR POWER CONDITIONER  
A solar power conditioner includes: a synchronous controller; and electric power converters connected in series with each other and arranged at panel groups, respectively. Each electric power...
US20130148390 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...
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...
US20140078797 CONTROL FOR FAULT-BYPASS OF CASCADED MULTI-LEVEL INVERTER  
A cascaded multi-level inverter is controlled in fault bypass operation. Rather than relying on approximations or feedback forms, the reference voltages are generated as an analytic solution. The...
US20130155735 STACKED VOLTAGE SOURCE INVERTER WITH SEPARATE DC SOURCES  
A stacked voltage source inverter having separate DC sources is described herein. This inverter is applicable to low or medium voltage, low to medium power applications such as photovoltaic...
US20130051094 CASCADED FLYING CAPACITOR MODULAR HIGH VOLTAGE INVERTERS  
A high voltage inverter is provided which includes a plurality of k-level flying capacitor H bridge modules, k being greater than 2, each having a positive dc terminal, a negative dc terminal, and...
US20130201736 SOLAR INVERTER SYSTEM AND CONTROL METHOD THEREOF  
A solar inverter system includes a first inverter, a second inverter, and a controller. The first inverter has a first input terminal, and a first output terminal. The first input terminal is...
US20110194319 ALTERNATING CURRENT POWER SUPPLY DEVICE AND METHOD OF CONTROLLING SAME  
An alternating current power supply device comprises a DC power supply for generating direct current power, a plurality of, e.g., three first DC/AC inverter to third DC/AC inverter which are...
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...
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....
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...
US20110198936 Circuit Arrangement Including a Multi-Level Converter  
Disclosed is a circuit arrangement including at least one multi-level-converter.
US20140177300 SWITCHED-MODE POWER SUPPLY SYSTEM AND AIRCRAFT COMPRISING SUCH A SYSTEM  
An electric power supply system, comprising: a main switching cell (6) comprising a first main branch (14) and a second main branch (16) each including a main switch (T1, T2), andan auxiliary...
US20140306544 PHOTOVOLTAIC SYSTEM WITH BIASING AT THE INVERTER  
A photovoltaic system for converting a DC voltage from a photovoltaic generator into an AC voltage, includes a transformerless power inverter which comprises high-frequency-clocked switching...
US20130063991 VOLTAGE CONVERTER CONFIGURATIONS FOR SOLAR ENERGY SYSTEM APPLICATIONS  
A system includes a low switching frequency power converter configured to be coupled to a solar cell, wherein the low switching frequency power converter is configured to generate alternating...
US20120175955 SMART MICROGRID RECONFIGURABLE AC INTERFACE  
Presented is a system and method for providing reconfigurable AC interfaces for AC power systems. The method comprises embedding a reconfigurable AC interface for transferring power between power...
US20130207583 VOLTAGE OUTPUT CIRCUIT, LOAD DRIVE CIRCUIT, AND METHOD FOR OUTPUTTING VOLTAGE  
A voltage output circuit includes: an oscillator circuit configured to output an oscillation signal while changing an oscillation frequency thereof; and a voltage generating circuit configured to...
US20130314957 HIGH VOLTAGE HIGH POWER MULTI-LEVEL DRIVE STRUCTURE  
A high voltage, high power multi-level drive structure includes a plurality of neutral-point-piloted (NPP) converter cells stacked together. At least one clamping diode is connected to one or many...
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...
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...
US20130107587 PHOTOVOLTAIC ARRAY EMULATORS  
Photovoltaic (PV) array emulators and methods are described. In one example, a method for use in testing a PV inverter includes coupling a first PV inverter to an alternating current (AC) power...
US20090147554 PARALLEL CONNECTED INVERTERS  
A distributed power system wherein a plurality of power converters are connected in parallel and share the power conversion load according to a prescribed function, but each power converter...
US20150062984 POWER CONVERSION CIRCUIT AND POWER CONVERSION SYSTEM  
A power converter, includes a first terminal and a second terminal which are connected to a direct current; a third terminal connected to an alternating current; N multi-level bridge arms...
US20130107590 SOLID STATE PULSED POWER GENERATOR  
A power generator includes one or more full bridge inverter modules coupled to a semiconductor opening switch (SOS) through an inductive resonant branch. Each module includes a plurality of...
US20120092908 Multi-Level Parallel Power Converters  
Multi-level power converters are disclosed. In one embodiment, a multi-level power converter includes an input for receiving an input voltage and a converter output for providing a variable output...
US20090034303 DISCONTINUOUS PULSE WIDTH MODULATION FOR DOUBLE-ENDED INVERTER SYSTEM  
Systems and methods are provided for controlling a double-ended inverter system having a first inverter and a second inverter. The method comprises determining a required output current and...
US20120002450 BIDIRECTIONAL INVERTER FOR CONVERSION BETWEEN A DIRECT CURRENT SOURCE AND AN ALTERNATING CURRENT GRID  
A bidirectional inverter is disclosed, the inverter including DC terminals and being connectable to a grid via grid AC terminals. The inverter includes a first subinverter and a second...
US20080259661 Control Process for Redundancy Use in the Event of a Fault of a Polyphase Power Converter Having Distributed Energy Stores  
The invention relates to a method for controlling a power converter having at least two phase modules, which each have an upper and a lower valve branch, each having at least three...
US20140211521 SCALABLE SINGLE-STAGE DIFFERENTIAL POWER CONVERTER  
An embodiment of the invention is a scalable single stage differential power converter. The inverter can be implemented in signal, split and multi-phases. A multiphase converter can be achieved...
US20090296434 High efficiency, multi-source photovoltaic inverter  
A photovoltaic (PV) inverter system operates continuously in a buck converter mode to generate a sum of full wave rectified sine wave currents at a current node common to a plurality of buck...
US20120020125 VOLTAGE REGULATOR FOR FUEL CELL AND METHOD THEREFOR  
A voltage regulator for a fuel cell and a method therefor are disclosed. Inputs of converters are connected to the fuel cell in parallel and outputs of the converters are connected between a...
US20110241591 DEVICE WITH A POLYPHASE ELECTRICAL MACHINE, AND RELATED ELECTRICAL MACHINE  
The invention relates to a device having a polyphase electrical machine, wherein a plurality of inverters (36, 37, 38), which are controlled by an interlaced control modulated by pulse width to an...
US20120099353 POWER CONVERTING APPARATUS  
A power converting apparatus includes a main inverter having a high-voltage DC power supply that operates at a low frequency employing SiC MOSFETs having a high withstand voltage exceeding 600 V...
US20060256593 Voltage controller with true RMS indicator  
A power controller for a model vehicle layout provides output AC power in response to user input. A sensor circuit and indicating device, such as a digital display screen, an LED bank, or a dial...
US20130286697 POWER QUALITY MANAGEMENT SYSTEM  
A power quality management system includes a plurality of phase balancers, each phase balancer including single phase converters coupled between two phase lines and a plurality of controllers to...
US20080144342 ADAPTIVE POWER ELECTRONICS INTERFACE FOR HYBRID ENERGY SYSTEMS  
An adaptive hybrid energy system is provided. The system includes a first DC energy source that generates a first DC electrical output by converting a first type of energy into an electrical...
US20140293668 Hybrid AC/DC Converter For HVDC Applications  
A power electronic converter, for connecting AC and DC networks and transferring power therebetween, comprises: first and second DC terminals for connection in use to a DC network; at least one...
US20120275202 SERIES MULTIPLEX POWER CONVERSION APPARATUS  
A series multiplex power conversion apparatus includes a plurality of phases. Each of the plurality of phases includes a plurality of power conversion cells coupled in series to each other. Each...
US20120218790 POWER CONVERSION SYSTEM  
A power conversion system includes n (n being an integer of 2 or more) power conversion devices (P1 to P4) connected in parallel to a load (4); and a communication line (2) connected to the n...
US20150138855 APPARATUS FOR CONTROLLING PARALLELED INVERTER  
An apparatus for controlling paralleled inverter is disclosed. In the apparatus for controlling paralleled inverter, one synchronization signal is shaped by at least two inverters to respectively...

Matches 1 - 50 out of 149 1 2 3 >