Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
12/18/2014 > 28 patent applications in 19 patent subcategories.

20140369078 - Bridge converter with snubber circuit: A bridge converter with a snubber circuit is applied to a power apparatus and a load apparatus. The bridge converter includes a transformer, a first diode, a secondary side first switch unit, a first capacitor, a second diode, a second capacitor, a secondary side second switch unit, a direct current... Agent:

20140369080 - Compound semiconductor device and method of manufacturing the same: An AlGaN/GaN HEMT includes: a compound semiconductor layer; a source electrode and a drain electrode formed on an upper side of the compound semiconductor layer; and an Al—Si—N layer being a high-resistance layer disposed in a lower portion of at least one of the source electrode and the drain electrode... Agent:

20140369077 - Pfc circuit for charging converter: A power factor correction (PFC) circuit for a charging converter, includes an input terminal connected with an alternating-current source, and an output terminal connected with a converter. The output terminal is connected to an electrolytic capacitor, such that the PFC circuit is connected in parallel with the converter through the... Agent: Hyundai Motor Company

20140369076 - Power supply device: A power supply device includes a full-bridge circuit including first to fourth switches switching power input from a power input unit, the first and second switches and the third and fourth switches being connected to both terminals of the power input unit in parallel; a resonance unit connected between a... Agent: Samsung Electro-mechanics, Co., Ltd.

20140369075 - System and method for controlling dc - dc converter: A system and a method for controlling a DC-DC converter include a microcomputer for deriving an input limiting current value by dividing an input limiting power value by an input voltage value. A conversion circuit scales the input limiting current value to a limiting voltage value. A voltage control circuit... Agent: Hyundai Motor Company

20140369079 - Voltage converter for a motor vehicle: The invention relates to a voltage converter (1) for a motor vehicle. Said voltage converter (1) comprises a transformer (10) and a power output stage (7). The power output stage (7) comprises at least two semiconductor switches (20, 22, 24, 26) that are connected to the transformer (10), in particular... Agent:

20140369081 - Power converter: LLC power converters are disclosed that operate in the soft switching region and are defined by a range of frequencies within which soft switching occurs. The LLC power converters include an LLC tank circuit in which the values of the inductors and the capacitors are scaled by a frequency scaling... Agent:

20140369082 - Power supply device: There is provided a power supply device, including an insulating direct current to direct current (DC/DC) converter unit including a primary side winding and a secondary side winding inductively coupled to the primary side winding and inducing a voltage in the secondary side winding in a first direction or a... Agent: Samsung Electro-mechanics Co., Ltd.

20140369084 - Electrical circuit for delivering power to consumer electronic devices: An electrical circuit for providing electrical power for use in powering electronic devices is described herein. The electrical circuit includes a power converter circuit that is electrically coupled to an electrical power source for receiving alternating current (AC) input power from the electrical source and delivering direct current (DC) output... Agent:

20140369083 - Resonant converter, power supply and power controlling method thereof: A resonant converter, a power supply and a power controlling method thereof are provided. The power supply includes a resonant converter which includes a square wave generator configured to alternately turn on and off first and second switches according to a frequency to generate a square wave, a resonant wave... Agent: Samsung Electronics Co., Ltd.

20140369085 - Power delivery device and control method of the same: There can be provided a power delivery (PD) device capable of achieving protocols, e.g. Hard Reset, without using any alternative power source, and a control method of thereof. The PD device includes: a power source; a power line configured to deliver power supplied from the power source, to an outside;... Agent:

20140369086 - Power supply apparatus and image forming apparatus: The power supply apparatus includes a transformer, a switch element that drives a primary side of the transformer, and a control unit that controls a drive frequency of the switch element, wherein when a state of driving the switch element at a first drive frequency is shifted to a state... Agent:

20140369087 - Determining a phase and a frequency of an electric quantity of an operating electrical device: A method and an apparatus for determining a phase and a frequency of an electric quantity being associated with an operation of an electrical device are described. The method comprises extracting a fundamental component of the electric quantity, calculating a positive sequence component of the electric quantity based on the... Agent: Siemen Aktiengesellschaft

20140369088 - Multi-level inverter: A multi-level inverter includes: a rectifying unit to rectify received a three-phase voltage; a smoothing unit to receive the rectified voltage and provide the rectified voltage as voltages having different levels to first to third different nodes; and an inverter unit including a plurality of switch units to transfer the... Agent: Lsis Co., Ltd.

20140369089 - Power conversion control device: A period composed of a total of three periods, namely a period when an actual voltage vector is employed and periods before and after it can be regarded as an isolation period when an actual voltage vector is isolated in a vicinity where switching for commutation in a current-source converter... Agent:

20140369090 - Inverter apparatus: In an inverter apparatus, an output voltage of an active filter circuit that steps up and smoothes a DC voltage is converted into an AC voltage by an inverter circuit. The active filter circuit includes a capacitor and a rectifier device connected between an input node and an output node.... Agent:

20140369091 - Method for operating a drive control device, facility with means for executing the method and drive control device with such a facility: A drive controller and a method for operating a drive controller having a converter with a DC link circuit, includes measuring during operation phase currents generated by the converter; forming from the measured phase currents a current vector in a first coordinate system; rotating, with a first transformation angle and... Agent:

20140369092 - Method of reducing input current distortion in a rectifier: A method is disclosed for reducing input current harmonic distortion in a Vienna-type active rectifier that includes the steps of sensing voltage values from upper and lower halves of a DC bus associated with the rectifier, determining an average of the sensed voltage values, calculating upper and lower scale factors... Agent: Hamilton Sundstrand Corporation

20140369093 - Adaptive rcd snubber and method for switching converter: Exemplary embodiments provide a method and an adaptive RCD snubber circuit for a switching converter having a series-connection of a main inductor and a main switching device. A voltage stress of the main switching device is sensed, and the sensed voltage stress is controlled to a reference level by controlling... Agent: Abb Research Ltd,

20140369094 - Converter cell and associated converter arm and method: It is presented a converter cell comprising: a first terminal and a second terminal; an energy storage device connected on a first end to the second terminal; a first switch connected on a first end to the first terminal; a second switch arranged between the two terminals; and a third... Agent: Abb Technology Ag

20140369095 - Pumping circuit: A pumping circuit includes a charge pump configured to generate a pumping voltage based on a first voltage in response to an oscillation signal, and an oscillator configured to provide a period-controlled oscillation signal based on the first voltage and a second voltage.... Agent: Sk Hynix Inc.

20140369096 - Power conversion apparatus: A power conversion apparatus including a three-phase transformer interconnected to a three-phase power system, the three-phase transformer including a primary winding group that receives three-phase electric power of the three-phase electric power system, a first secondary winding group and a second secondary winding group that receive electric power transferred from... Agent: Toshiba Mitsubishi-electric Industrial Sytems Corporation

20140369097 - Switch mode power converter having burst mode with current offset: A controller for use in a power converter includes a load sensing circuit coupled to output an error signal in response to a feedback signal representative of an output of the power converter. The error signal is representative of a load coupled to an output of the power converter. A... Agent:

20140369098 - Micro inverter with dc-to-ac converter and solar photovoltaic system having the same: A DC-to-AC converter receives a DC power generated from a solar panel and converts the received DC power into an AC power outputted through a power line. The DC-to-AC converter includes a signal input port for externally connecting an environment sensing apparatus. The environment sensing apparatus senses environment conditions around... Agent: Delta Electronics, Inc.

20140369099 - Power converter including smoothing capacitor and discharge resistor: A power converter includes a body including a switching element; a plurality of semiconductor modules each having a control terminal projected from the body; a circuit board controlling the switching element; a cooler that cools the semiconductor modules; a smoothing capacitor smoothing direct-current voltage applied to the switching element; a... Agent:

20140369100 - Rectifier circuit: A rectifier circuit includes an inductor connected to AC inputs of a diode bridge circuit, a capacitor series circuit connected to a DC output, and bi-directional switches that are connected between the series connection point of the capacitors and the AC inputs of the diode bridge circuit. In order to... Agent: Fuji Electric Co., Ltd.

20140369101 - Method of deriving switch current signals in a rectifier: A method of deriving synchronous switch currents for a three-phase Vienna-type active rectifier that includes the step of generating gate driver signals for each phase of the rectifier by pulse width modulation, wherein the gate driver signals include a top gate driver signal, a clamp gate driver signal and a... Agent: Hamilton Sundstrand Corporation

20140369102 - High power converter comprising low power switches and a switch control device for generating a pulse with a reference value and at least two control values: A system for converting a first voltage into a second voltage, comprising: input terminals and output terminals; switching members disposed between the terminals, which can convert voltage; and a device for controlling the switching members, said device comprising a cell for controlling a switching member and a member for managing... Agent:

  
12/11/2014 > 24 patent applications in 18 patent subcategories.

20140362606 - Dc-dc conversion device: A DC-DC conversion device includes four semiconductor switch elements 101 to 104 in a full-bride configuration on the primary side of a transformer 2. With this configuration, it is possible to increase the turn ratio of a primary winding 21 and secondary winding 22 of the transformer 2 and thus... Agent: Fuji Electric Co., Ltd.

20140362605 - Duty control method and system for low voltage dc-dc converter: A duty control method for a low-voltage DC-DC converter (LDC) is provided in which a duty ratio of a high-efficiency and low-voltage DC-DC converter that has a boost converter and a full-bridge converter combined therein is variable-controlled to output low-voltage. In particular, control of a duty ratio of the LDC... Agent: Hyundai Motor Company

20140362607 - Magnetic integration double-ended converter: A magnetic integration double-ended converter with an integrated function of a transformer and an inductor includes an integrated magnetic member having a magnetic core with three magnetic columns having at least three windings (NP, NS1, NS2) and at least one energy storage air gap, where a primary winding (NP) and... Agent:

20140362608 - Method for programmable primary-side-regulated power converter: The invention discloses a method for controlling a programmable primary-side-regulated power converter. The method includes the following steps. A light load situation is enabled for a first time period at a secondary side of a transformer. A transmit-code is generated at the secondary side of the transformer. A current pulse... Agent:

20140362609 - Power supply device: A power adaptor to supply power for a portable device has an input circuit (21) for receiving mains input power, a power switch device (25), a power inductance (24) and an output circuit (22) coupled to the power inductance to provide the supply power for the portable device, and a... Agent: Koninklijke Philips N.v.

20140362610 - Circuits and methods for constant output current in a flyback converter: Flyback converters are disclosed herein. An embodiment of a flyback converter includes a transformer having a primary side and a secondary side. A switch is connected to the primary side of the transformer, wherein the switch controls the current in the primary side of the transformer. A resistance is connected... Agent:

20140362611 - Energy-saving power converter: A transformer primary side of a transformer starts storing energy when a first switch unit is turned on. A transformer secondary side auxiliary winding of the transformer generates a secondary side voltage. A voltage of a second input side of a comparison unit is higher than a voltage of a... Agent:

20140362613 - Lc snubber circuit: The present disclosure relates to an LC snubber circuit for a switching converter, wherein the switching converter includes an inductor and a switching device connected in series. The LC snubber circuit can include a first snubber diode, a snubber capacitor, a second snubber diode, and a snubber transformer having a... Agent:

20140362612 - Switching power converter with primary-side dynamic load detection and primary-side feedback and control: A switching power converter provides regulated voltage to a load. The switching power converter comprises a transformer including a first primary winding coupled to an input voltage, a second primary winding, a secondary winding coupled to an output of the switching power converter, and an auxiliary winding, a first switch... Agent:

20140362615 - Power supply apparatus and printing apparatus: The power supply includes a transformer for generating a first output voltage by a first secondary winding, and a superimposing voltage by a second secondary winding, and a driver. Furthermore, the circuit includes first and second rectifying and smoothing circuits for respectively rectifying and smoothing the first output voltage and... Agent:

20140362614 - Switching power supply device, switching power supply control method and electronic apparatus: Provided is a switching power supply device in a critical mode, including a load detection section that detects a load. When the detected load is lighter than a setting value, an upper limit of a switching frequency is lowered stepwise.... Agent: Sony Corporation

20140362616 - High voltage switching power supply: A dual resonance circuit is formed of two transformers, two resonance inductors and two resonance capacitors for a resonance type switching power supply employing parallel connected transformers. The secondary winding of the transformer is configured in a center tap structure, and a top and bottom symmetrical voltage multiplying rectifier is... Agent:

20140362617 - Vector control of grid-connected power electronic converter using artificial neural networks: Systems and methods for performing vector control of grid-connected power electronic converters using a neural network are described herein. Optionally, the grid-connected power electronic converters can be used in renewable and electric power system applications. In order to improve performance and stability under disturbance conditions, integrals of error signals can... Agent: The Board Of Trustees Of The University Of Alabama

20140362619 - Hvdc converter: An AC-AC converter system includes transformer arrangements and HVDC converter units on primary and secondary sides of the system, respectively. The system exhibits first and second three-phase AC networks, and the converter units are interconnected via a DC connection. By integrating at least part of two transformer arrangements in one... Agent:

20140362618 - 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 primary converter unit including at least one primary converter limb including first and second DC terminals for connection in use to a DC network... Agent: Alstom Technology Ltd.

20140362620 - 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 inverter unit, wherein the inverter unit includes a first switch unit interposed between the first node and a first output terminal, second switch... Agent: Lsis Co., Ltd.

20140362621 - Systems and methods for two-level protection of power conversion systems: Systems and methods are provided for protecting a power conversion system. A system controller includes a two-level protection component and a driving component. The two-level protection component is configured to detect an output power of a power conversion system and generate a protection signal based on at least information associated... Agent: On-bright Electronics (shanghai) Co., Ltd.

20140362622 - Controlling operation of a converter having a plurality of semiconductor switches for converting high power electric signals from dc to ac or from ac to dc: A method for controlling operation of a power converter is provided. The method includes determining, in a rotating dq-reference frame, a direct current error signal and a quadrature current error signal, performing a first control procedure, and performing a second control procedure. The method also includes obtaining a direct voltage... Agent:

20140362623 - Control method, control device and mobile electric power storage apparatus: The invention is a control method and a control device for determining components of a control voltage of an inverter adapted for feeding power to a grid, in the course of which a vector direction (θ*) of a voltage of the grid is determined, on the basis of active power... Agent:

20140362624 - Spin torque diode element, rectifier and power generation module: Provided is a spin torque diode element having an excellent frequency characteristic and an excellent rectification efficiency. The spin torque diode element according to the present invention includes first and second magnetization free layers and a magnetization fixed layer that is shared by the magnetization free layers and has a... Agent: Hitachi, Ltd.

20140362625 - Motor vehicle electrical system having an active bridge rectifier and overvoltage protection during a load dump, rectifier system, associated operating method and means for its implementation: A vehicle electrical system includes: an active bridge rectifier which is connected to a generator via multiple phase terminals, and having terminals on the direct voltage side; a unit for recognizing load shedding at the active bridge rectifier and short-circuiting the phase terminals in a clocked manner, as the result... Agent: Robert Bosch Gmbh

20140362626 - Multilevel inverter device: A multilevel inverter device comprises: a series circuit of a first switching element 21 and a second switching element 22 connected between a terminal at a high voltage side and a terminal at a low voltage side of a DC electric power supply 2; a series circuit of two capacitors... Agent: Panasonic Corporation

20140362627 - Current equalizing busbar: The present application discloses a current equalizing busbar for a converter comprising: a direct current busbar connected to a DC terminal of the converter and positive terminals and negative terminals of respective power modules; and an alternate current busbar connected to AC terminals of the respective power modules and a... Agent: Delta Electronics, Inc.

20140362628 - Modular multiple converter comprising reverse conductive power semiconductor switches: A submodule for a modular multilevel converter has at least one unipolar energy storage device, first and second connection terminals and a power semiconductor circuit with power semiconductor switches that are driven with a control signal and freewheeling diodes connected in parallel with an assigned power semiconductor switch in the... Agent:

  
12/04/2014 > 17 patent applications in 11 patent subcategories.

20140355308 - Overnight power adapter: Techniques and devices related to power adapters for mobile devices and, in particular, small form factor power adapters that allow a voltage droop during a power pulse exceeding a maximum output of the power adapter are discussed. For example, a small form factor and low voltage power adapter may include... Agent:

20140355309 - Selected-parameter adaptive switching for power converters: A selected-parameter adaptively switched power conversion system, for example, includes a counter for determining a period of an output oscillation a power supply switch, where the output oscillation starts when an output current generated by stored power of the power supply coil decays substantially to zero. An event generator for... Agent: Texas Instruments Incorporated

20140355310 - Full bridge dc-dc converter that applies current doubler: A full bridge DC-DC converter to which a current doubler is applicable is provided and includes a transformer and a switching circuit that converts a high direct current voltage into a high alternating current voltage and then outputs the high alternating current voltage to the primary side of the transformer.... Agent: Hyundai Motor Company

20140355311 - Galvanically isolated dc/dc converter and method of controlling a galvanically isolated dc/dc converter: A galvanically isolated DC/DC converter includes a first and a second side converter circuit coupled between a pair of first side DC terminals and a pair of second side DC terminals, respectively. The first side converter circuit has a first and a second switching element, each including a switch and... Agent: L-3 Communications Magnet-motor Gmbh

20140355312 - Isolated power supply, control signal transmission circuit and method thereof: In one embodiment, method of generating a control signal for an isolated power supply, can include: (i) generating a first ground noise component with a first predetermined proportionality to a ground noise signal; (ii) generating a first peak signal based on a first control signal having the ground noise signal,... Agent: Silergy Semiconductor Technology (hangzhou) Ltd

20140355313 - Resonant dc-dc converter control device: A control device is configured to, when the direct current output voltage of a resonant DC-DC converter is of a value that exceeds the maximum value that can be output in a fixed frequency control region, there is a switch from fixed frequency control to frequency modulation control. Because of... Agent: Fuji Electric Co., Ltd.

20140355314 - Storage time control: We describe a method of controlling turn off time delay of a switching device of a switch mode power converter (SMPC). The SMPC has an inductive component comprising an input winding coupled to receive power from an input; and a switching device to, when on, conduct input winding current. In... Agent: Cambridge Semiconductor Limited

20140355315 - Switching power supply device, switching power supply control method, and electronic apparatus: A switching power supply device includes a switching element to which a DC input is supplied, a frequency control circuit which controls a switching frequency of the switching element, a frequency detection circuit which detects the switching frequency of the switching element, and a duty ratio control circuit which controls... Agent: Sony Corporation

20140355316 - Control device for use with switching converters: The present application provides a control device for controlling a switching converting module to generate an output signal of constant output current from a rectified AC power supply signal. The switching converting module comprises a primary winding for receiving the rectified AC power supply signal and a power switch coupled... Agent: Si-en Technology (xiamen) Limited

20140355317 - Apparatus and a method for enhancing power output: An apparatus and a method for enhancing power output, the apparatus comprising: a thyristor having an anode, a cathode and a gate; and a controller connected to the gate, the cathode and the anode wherein, when the anode is provided with a voltage, the controller is configured for activating the... Agent: Dytech Energy Pte. Ltd.

20140355318 - Feed-in/feedback converter: A method of controlling a frequency converter comprises steps for measuring phase currents flowing in a three-phase supply network, for generating a first modulation space vector that comprises an angle that is synchronous to a supply voltage of the three-phase supply network and a determined modulation index as an amplitude,... Agent:

20140355319 - Ac-dc converter having soft-switched totem-pole output: An AC-DC converter has a totem-pole output circuit having first and second semiconductor switches, each having a channel coupled to a switching node and having a parasitic capacitance associated with the channel. An inductor has one terminal thereof connected to a switching node. First and second bypass devices are coupled... Agent:

20140355320 - Control circuit for ac-dc power converter: A control circuit for an AC-DC power converter includes a junction field effect transistor (JFET), a first resistor, a second resistor, and a third resistor. The JFET includes a substrate, a drain, a source, a gate, a first oxide layer, and a second oxide layer. The first oxide layer is... Agent: Richtek Technology Corporation

20140355321 - Single-phase power converter, three-phase two-phase power converter, and three-phase power converter: This power converter (1) is provided with: unit cells (11-M) having a semiconductor switch, a DC capacitor (C) and a charge/discharge current I/O terminal; a first arm (12-P) and a second arm (12-N) comprising multiple unit cells (11-M) connected to each other in cascade; an arm connecting unit (13) which... Agent:

20140355322 - Stacked switched capacitor energy buffer circuit: A stacked switched capacitor (SSC) energy buffer circuit includes a switching network and a plurality of energy storage capacitors. The switching network need operate at only a relatively low switching frequency and can take advantage of soft charging of the energy storage capacitors to reduce loss. Thus, efficiency of the... Agent: Massachusetts Institute Of Technology

20140355324 - Inverter unit: An inverter unit includes a first circuit board and a second circuit board arranged at a predetermined space so as to face each other. Each of the first circuit board and the second circuit board has a main circuit forming area. A plurality of power devices are mounted in the... Agent: Kabushiki Kaisha Toyota Jidoshokki

20140355323 - Methods and systems for converting a dc-voltage to an ac-voltage: A device includes a full-bridge configured to convert a direct current (DC) voltage to an alternating current (AC) voltage. The full-bridge includes at least first, second, third and fourth bridge sections. Each of the first, second, third and fourth bridge sections includes a switch of a first type configured to... Agent:

  
11/27/2014 > 17 patent applications in 9 patent subcategories.

20140347893 - Llc bidirectional resonant converter and methods of controlling: A LLC bidirectional resonant converter comprising: a resonant tank, a first switching circuit connected to the resonant tank via first power conduits, a second switching circuit connected to the resonant tank via second power conduits, a switching element, and at least one switchable inductive element which is arranged by the... Agent:

20140347889 - Power conversion apparatus and power conversion method: A power conversion apparatus includes a primary side circuit and a secondary side circuit magnetically coupled to the primary side circuit via a transformer, and converts power between a primary side port of the primary side circuit and a secondary side port of the secondary side circuit, using switching of... Agent: Toyota Jidosha Kabushiki Kaisha

20140347890 - Power conversion apparatus and power conversion method: A power conversion apparatus includes: a primary side circuit; a secondary side circuit that is magnetically coupled to the primary side circuit by a transformer; and a control unit that adjusts a transmitted power transmitted between the primary side circuit and the secondary side circuit by changing a phase difference... Agent: Toyota Jidosha Kabushiki Kaisha

20140347892 - Power conversion apparatus and power conversion method: A power conversion apparatus includes a plurality of power supply circuits each including a primary side circuit, and a secondary side circuit that is magnetically coupled to the primary side circuit via a transformer. Electrical power that changes according to a phase difference between switching of the primary side circuit... Agent: Toyota Jidosha Kabushiki Kaisha

20140347891 - Power conversion apparatus and power correction method: A power conversion apparatus includes a primary side circuit, a secondary side circuit that is connected to the primary side circuit through a reactor and magnetically coupled thereto through a transformer, and a control unit that adjusts power transmitted between the primary side circuit and the secondary side circuit by... Agent: Toyota Jidosha Kabushiki Kaisha

20140347894 - Current shaping for dimmable led: Aspects of the disclosure provide a circuit that includes a detector and a controller. The detector is configured to detect a firing start by a triode for alternating current (TRIAC) in a power supply. The controller is configured to control a switch in connection with a magnetic component in response... Agent: Marvell World Trade Ltd

20140347895 - Switching power-supply device: A switching power-supply device includes a COMP-voltage comparator circuit that compares a COMP-voltage obtained by performing phase compensation on the feedback signal, with a first threshold voltage which is a threshold value; and an intermittent-oscillation control circuit that, if it is detected by the COMP-voltage comparator circuit that the COMP-voltage... Agent: Sanken Electric Co., Ltd.

20140347896 - Dc link module for reducing dc link capacitance: A dc link module for a power circuit includes a first connector for connecting to a first power conversion circuit, a second connector for connecting to a second power conversion circuit, wherein the second power conversion circuit is connected to a load circuit arranged to at least intermittently operate as... Agent: City University Of Hong Kong

20140347897 - High voltage direct current transmission and distribution system: A direct current to alternating current inverter sub-system is for a HVDC distribution system. The DC to AC inverter sub-system includes an enclosure and a DC to DC galvanically isolated buck converter having a DC input electrically connectable to a HVDC cable and a DC output. A DC to AC... Agent: Eaton Corporation

20140347898 - Modular multi-level power conversion system with dc fault current limiting capability: A power converter module is provided. The power converter module includes a first converter leg and a second converter leg. The first converter leg includes a first switching unit and a second switching unit coupled in series. The second switching unit is disposed in a reverse orientation with respect to... Agent:

20140347899 - Control methods for power converters: A method of operating a power converter arrangement, the power converter arrangement includes a dc link and a dc load/source, an active rectifier/inverter having dc terminals connected to the dc link and is adapted to provide a variable dc link voltage between a maximum and a minimum limits, an interleaved... Agent: Ge Energy Power Conversion Technology Ltd

20140347900 - Interleaved converter: An interleaved converter configured by connecting a plurality of switching converter circuits in parallel includes an inter-inductor switch that selects whether inductors are connected in series, an input side switch that is connected to a connection point of the inductor and the inter-inductor switch and selects whether electric power is... Agent: Mitsubishi Electric Corporation

20140347902 - Method and apparatus for high efficiency ac/dc conversion of low voltage input: Embodiments of the subject invention relate to a method and apparatus for providing a low-power AC/DC converter designed to operate with very low input voltage amplitudes. Specific embodiments can operate with input voltages less than or equal to 1 V, less than or equal to 200 mV, and as low... Agent:

20140347904 - Power converter: A power converter comprises a first diode, a second diode, a first capacitor, a second capacitor, and an AC switch. The first diode has a cathode terminal connected to a DC positive bus. The second diode has a cathode terminal connected to an anode terminal of the first diode, and... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20140347901 - Rectifier circuit and power supply including the same: There is provided a rectifier circuit, including a rectifying unit rectifying input power to output rectified power corresponding to a magnitude of the input power and including a plurality of rectifier diodes, a first capacitor connected in parallel to any one of the plurality of rectifier diodes, a switch element... Agent: Samsung Electro-mechanics Co., Ltd.

20140347903 - Variable coil configuration system, apparatus and method: One or more variable configuration controller (VCC) systems may produce various combinations of series or parallel couplings of coils, winding or inductive elements of an electric machine such as a generator and/or electric motor. The VCC systems include a plurality of bridge rectifiers, and a first number of switches operated... Agent: Exro Technologies Inc.

20140347905 - Power supply circuit for gate driving circuit of a power converter: A power supply circuit for a gate driving circuit for driving semiconductor switching devices of a power converter that is configured to perform a DC to AC conversion. The power supply circuit includes a DC power supply including a plurality of serially-connected single DC power supplies, a flying capacitor type... Agent: Fuji Electric Co., Ltd.

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