Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems May archived by USPTO category 05/12

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.
05/31/2012 > 12 patent applications in 11 patent subcategories.

20120134180 - Dc/dc converter: To provide a DC/DC converter capable of down-sizing magnetic components and varying boosting and bucking ratios, and a bidirectional boosting-bucking operations, a bidirectional boosting-bucking magnetic-field cancellation type of DC/DC converter (10) is provided which includes: a first voltage side port (P1), a second voltage side port (P2); a common reference... Agent: Honda Motor Co., Ltd.

20120134181 - Gate driving power supply system and inverter control circuit: A primary power supply input can be supplied to each of gate driving units through individual transformers, respectively, from power supply terminals. One end of a primary winding of each of the transformers can be connected to the power supply terminal by power supply lines. In addition, the other end... Agent: Fuji Electric Co., Ltd.

20120134182 - Control circuits and methods for switching mode power supplies: A switching mode power supply (SMPS) includes a transformer having a primary winding, a secondary winding for providing an output voltage, and an auxiliary winding. The SMPS also includes a power switch coupled to the primary winding. A first control circuit is coupled to the secondary winding, and is configured... Agent: Bcd Semiconductor Manufacturing Limited

20120134184 - Multi-level inverter having dual controller: The present disclosure relates to a multi-level inverter having a plurality of single inverter modules, the multi-level inverter including: a first controller providing a control signal to the multi-level inverter in response to voltage and frequency command based on detection of current and rotation speed of a motor; a second... Agent: Lsis Co., Ltd.

20120134183 - Power converter with a controlled current source and connected in single-phase mode: The invention relates to a control method implemented in a power converter, such as, for example, a variable speed drive. This control method is designed to make the power converter operate when the latter is connected to the network in single-phase mode. The power converter notably includes a controlled current... Agent: Schneider Toshiba Inverter Europe Sas

20120134185 - Circuit for discharging ac power: There is provided a circuit for discharging AC power including: a first rectifier rectifying AC power inputted from an AC power line; an electro-magnetic interference (EMI) removing unit installed between the AC power line and the first rectifier to suppress EMI of the AC power; a discharging signal generator generating... Agent: Samsung Electro-mechanics Co., Ltd.

20120134186 - Inverter array with localized inverter control: An apparatus for delivering AC power to an AC load may include a plurality of inverters to receive direct current (DC) power from a respective DC power source and respectively provide AC power to an AC load. The apparatus may further include a first controller to generate a first control... Agent: Solarbridge Technologies

20120134187 - Power factor control systems and methods: A boost converter comprises an inductance that receives an input signal. A switch controls current supplied by the inductance to a load. A power factor control module comprises a mode control module that selects an operating mode of the boost converter and a switch control module that switches the switch... Agent:

20120134188 - Systems and apparatus for reducing electromagnetic interference and methods of assembling the same: An electric machine drive system is described. The system includes an inverter, an electric machine coupled to the inverter by at least one output conductor and including a ground connection, and an active common mode current reducing device coupled between the ground connection of the electric machine and the inverter.... Agent: General Electric Company

20120134189 - Inverter array control: An apparatus to deliver an alternating current (AC) power may include a controller having a processor and a memory. The apparatus may also include a plurality of power inverters in communication with the controller. Each power inverter may be configured to convert direct-current (DC) power into the (AC) power. Each... Agent: Solarbridge Technologies

20120134190 - Image forming apparatus and control method thereof: An image forming apparatus includes an image forming unit which forms an image, a power supply which converts input alternating current (AC) power and outputs direct current (DC) power having a predetermined level to operate the image forming unit; a mechanical power switch through which the AC power is supplied... Agent: Samsung Electronics Co., Ltd.

20120134191 - Power converting apparatus, grid interconnetion apparatus and grid interconnection system: A power converting apparatus comprises a DC-DC converter circuit that steps up or steps down an input voltage from a DC power supply, a DC-AC converter circuit that converts an intermediate voltage outputted by the DC-DC converter circuit to an alternate current, and a control circuit that controls the DC-DC... Agent: Sanyo Electric Co., Ltd.

05/24/2012 > 11 patent applications in 9 patent subcategories.

20120127760 - Switching power supply and electronic device using the same: A switching power supply includes: transformer 60 which includes a primary winding and a secondary winding and outputs, through the secondary winding, an AC voltage based on the current supplied to the primary winding; switching element 61 which controls current supply to the primary winding; rectifying/smoothing circuit 65 which converts... Agent:

20120127761 - Circuit for a resonant converter: process the error signal (1310) in order to provide a control signal (1210; 1328), wherein the control signal (1210; 1328) is configured to set the switching frequency of the resonant converter in order to control the output power during the on-time of a burst of the resonant converter.... Agent: Nxp B.v.

20120127762 - Llc converter active snubber circuit and method of operation thereof: An active snubber circuit for a power converter, a method of operating the same and an inductor inductor capacitor converter incorporating the circuit or the method. In one embodiment, the circuit includes: (1) a series-coupled first capacitor and diode associated with a secondary-side switch in the power converter and coupled... Agent: Lineage Power Corporation

20120127763 - Electric power supply system comprising power modules coupled in parallel: The present invention relates to an electric power supply system comprising at least two power modules coupled in parallel and comprising a first power module comprising a first control means adapted to control the operation of at least the first power module, and a second power module comprising a second... Agent: Danfoss Drives A/s

20120127764 - Power systems for photovoltaic and dc input sources: A power conversion system for use with a photovoltaic (PV) power source may include a DC/DC converter for converting a first DC voltage into a second DC voltage, an isolation transformer, an inverter for converting DC power to AC power, and at least one controller for controlling the DC/DC converter... Agent: Astec International Limited

20120127766 - Configurable hybrid converter circuit: A circuit for a hybrid voltage source converter suitable for high voltage DC power transmission and reactive power compensation. The circuit comprises an assembly of electrically interconnected elements (Elements 1 to 20) including a plurality of first elements (Elements 1 to 6) and a plurality of second elements (Elements 7... Agent: Alstom Technology Ltd.

20120127765 - Contactless power transfer system and control method thereof: A contactless power transfer system, including a coil configured to supply or receive power contactlessly via magnetic coupling, a bridge circuit having two direct current (DC) terminals and two alternating current (AC) terminals, and a smoothing capacitor connected between the DC terminals. A load is connectable to either end of... Agent: Fuji Electric Co., Ltd.

20120127767 - Low-current inverter circuit: The circuit includes an E-mode transistor with gate-source junction, a D-mode transistor with gate-source junction, a component generating a voltage drop between the source of the D-mode transistor and the drain of the E-mode transistor, and a connection between the drain of the E-mode transistor and the gate of the... Agent: Epcos Ag

20120127768 - Power converter: A power converter includes a power converter section (4) (e.g., an inverter circuit) having a plurality of switching elements (Sp, Sn) in which a current can flow in a reverse direction, and a control section (10) which determines on-state time of each of the switching elements (Sp, Sn) according to... Agent:

20120127769 - Soft switching power converters: Soft switching power converters are described. In one example, a grid tie solar power converter includes an input for receiving a direct current (DC) power input, an h-bridge coupled to the input, and an output coupled to the h-bridge. The h-bridge includes a plurality of power switches. The output includes... Agent: Sunedison, LLC

20120127770 - Solar energy ac generating apparatus: A solar AC power generation apparatus is provided such that it can be conveniently installed in accordance with a required power generation amount because utility power can be drawn from each solar cell panel having a predetermined generation capacity. The solar AC power generation apparatus includes: a solar cell panel... Agent: Topsun Co., Ltd.

05/17/2012 > 18 patent applications in 15 patent subcategories.

20120120684 - Apparatus with internal power transfer: The invention relates to an electronic apparatus (I) with a DC power source (B) and power-consuming electronic circuits (EC) and to a method of transferring power between these components. The DC voltage of the power source (B) is converted into an AC voltage which is then transferred via a connector... Agent: Koninklijke Philips Electronics N.v.

20120120683 - Full bridge phase shifted power supply with synchronous rectification and current doubler and method for dynamically adjusting delay parameters thereof: A full bridge phase shifted power supply with synchronous rectification and current doubler and method for dynamically adjusting delay parameters thereof mainly have multiple delay parameter combinations respectively varying with multiple loads and embedded in a controller of the power supply. The delay parameter combinations serve to determine driving waveforms... Agent: Acbel Polytech Inc.

20120120685 - Control method and control module for controlling an asymmetric dc-dc converter: A control method is provided for controlling an asymmetric DC-DC converter including first and second power switches that are driven respectively by first and second control signals, and a voltage-converting circuit that is operatively associated with the first and second power switches for generating an output signal. The voltage-converting circuit... Agent: Silitek Electronic (guangzhou) Co., Ltd.

20120120686 - Switch controller and converter including the same: In a converter using a transformer, a switch controller controlling a main switch and an auxiliary switch increase a turn-on time of the auxiliary switch when a voltage of a signal corresponding to a current flowing to a primary coil of the transformer is greater than a reference voltage for... Agent:

20120120687 - Inverter control device and inverter control method: An inverter control device drives one of the two switching circuits with a fixed conduction width and changes the control method of the other switching circuit between pulse-width modulation, phase control method, and drive signal width control method by phase control method according to an output state, to implement highly... Agent: Panasonic Corporation

20120120688 - Startup circuit for dc-dc converter: A startup circuit for use in a DC-DC converter having an input voltage terminal and an output voltage terminal, with the output voltage terminal connected to an output capacitor and with said converter including a pass transistor for transferring charge from the input terminal to the output terminal. The startup... Agent:

20120120689 - Fault tolerant dc power systems: A fault tolerant DC power system includes a permanent magnet generator (PMG), a first contactor in electrical communication with the PMG, an active rectifier in electrical communication with the first contactor, a second contactor in electrical communication with the first contactor, and a motor drive in electrical communication with the... Agent: Hamilton Sundstrand Corporation

20120120690 - Power supply circuit: A power supply circuit enabling provision of good energy efficiency and downsizing is provided. A power supply circuit 1 according to the present invention includes: input terminals 2, 2 connected to a commercial power supply 10; a winding 4 serially connected between the input terminals 2, 2 via input conductors... Agent: Nihonmakisen Kogyo Co., Ltd.

20120120691 - Star-point reactor: A device for inverting an electric parameter in the field of power transmission and distribution has a converter that can be connected between an alternating current grid and a DC circuit and having power semiconductor valves extending between an alternating current connection and a DC voltage connection. Each power semiconductor... Agent: Siemens Aktiengesellschaft

20120120692 - Apparatus and method for switch mode power supply: A switch mode power supply (SMPS) is capable of reducing standby power consumption, and includes a power factor capacitor (PFC) bulk capacitor which supplies power in a standby mode to constant loads by repeatedly charging and discharging a voltage, a PFC controller which controls the voltage to be charged in... Agent: Samsung Electronics Co., Ltd.

20120120693 - Rectifier less bidirectional ac to dc converter: A split supply DC to DC converter is coupled through a low resistance path to a secondary coil of an ac line transformer, and is used as a high efficiency bidirectional AC to DC convertor. A small sense resistor is placed in series with the secondary in order to measure... Agent:

20120120694 - Power conditioner for photovoltaic power generation: Power generated by a solar battery of thin-film type is stepped up to a predetermined DC voltage by a step-up chopper circuit, and the predetermined DC voltage is converted into three-phase AC power by an inverter circuit, and the three-phase AC power is supplied to an AC power supply system... Agent: Mitsubishi Electric Corporation

20120120695 - Activatable and deactivatable supply unit for an electronic apparatus: A supply unit for an electronic apparatus that can be activated and deactivated has a mains adapter, a first voltage regulator and a voltage source that are connected on the input side with the direct voltage output of the mains adapter, and a logic module supplied by the voltage source... Agent:

20120120696 - Power factor correction converter: [SOLUTION] When a commercial power supply E operates normally, converter sections PFC1, PFC2 connected in parallel to each other can operate to approximate the input current from the commercial power supply E to the waveform and phase of the input voltage to correct power factor while supplying stabilized output voltages... Agent:

20120120698 - Switching branch for three-level converter and method for controlling switching branch of three-level converter: Exemplary embodiments for controlling a switching branch for a three-level converter, and a switching branch are disclosed. A first semiconductor switch and a second semiconductor switch, a first diode and a second diode, a third semiconductor switch and a fourth semiconductor switch, a third diode, and a fourth diode, a... Agent: Abb Oy

20120120697 - Three-phase isolated rectifer with power factor correction: A new class of Three-Phase Isolated Rectifiers with Power Factor Correction provides a high efficiency, small size and low cost due to direct conversion from three-phase input voltage to output DC voltage.... Agent: Cuks, LLC.

20120120699 - Semiconductor integrated circuit, noncontact/contact electronics device using the same and mobile terminal: The semiconductor integrated circuit includes: a pair of antenna terminals; a rectifier; a source-voltage terminal; a shunt regulator; a series regulator. When the voltage of the inside source line rises to or above a first set voltage, the shunt regulator passes a pull-down current through a pull-down transistor. When the... Agent: Renesas Electronics Corporation

20120120700 - Method and apparatus for regulating ac-dc adaptor for low current drain: e

05/10/2012 > 20 patent applications in 14 patent subcategories.

20120113683 - Compensation for electrical converter nonlinearities: Systems and methods are provided for delivering energy from an input interface to an output interface. An electrical system includes an input interface, an output interface, an energy conversion module coupled between the input interface and the output interface, and a control module. The control module determines a duty cycle... Agent: Gm Global Technology Operations, Inc.

20120113684 - Compensation circuit for constant current regulation of power supply and method thereof: A compensation circuit and method for constant current regulation of switching mode power supply are disclosed. The ringing waveform of a feedback signal, indicative of the output current of the power supply, causes error. To eliminate the error, a current source charges a capacitor in response to a demagnetizing oscillation... Agent:

20120113685 - Power supply system and image forming apparatus: A power supply system includes: a switching power supply; and a control device, wherein the switching power supply includes: a transformer; a semiconductor switching element; a switch control unit; and a rectifying/smoothing circuit, the switch control unit is supplied with power from the main power supply, starts to control the... Agent: Brother Kogyo Kabushiki Kaisha

20120113687 - Loosely regulated feedback control for high efficiency isolated dc-dc converters: The improved DC-DC converter apparatus includes a primary side circuit and a secondary side circuit that is galvanically isolated from the primary. The primary side induces a voltage in the secondary side that provides an output voltage for driving POLs. A flux-control device measures the transformer primary side flux to... Agent:

20120113686 - Virtual parametric high side mosfet driver: A power supply apparatus and method of regulating is provided. A converter circuit includes a primary switching element and an auxiliary switching element. The auxiliary switching element is for transferring a reflected voltage signal. A transformer includes a primary and a secondary, the primary is coupled with the converter circuit.... Agent: Flextronics Ap, LLC

20120113688 - Interleaved flyback converter device with leakage energy recycling: An interleaved flyback converter device with leakage energy recycling includes: two flyback converters and an input power. Each flyback converter includes a capacitor, a switch, two diodes, and a transformer. The input power is connected to the capacitors of the two flyback converters respectively. By using the capacitors as input... Agent: National Cheng Kung University

20120113690 - Method and apparatus for a high voltage power supply circuit: A power switch is switched to regulate an output of a power converter. A feedback signal representative of a power converter output during a feedback portion of an off time of the power switch is received. The feedback signal is above a threshold during a fraction of the feedback portion... Agent: Power Integrations, Inc.

20120113689 - Switching power supply device: A switching power supply device that includes a feedback terminal to which a feedback signal according to a load state is input, and a comparator which compares a terminal voltage of the feedback terminal with a reference voltage and determines whether the load state is a normal load state or... Agent: Fuji Electric Co., Ltd.

20120113691 - Power converter with controlled current source: A power converter including a rectifier stage connected to plural phases of a network delivering an input current at a determined fundamental frequency, a DC power supply bus and a bus capacitor connected to the DC power supply bus. The converter includes a controlled current source situated on the DC... Agent: Schneider Toshiba Inverter Europe Sas

20120113692 - Cascade power system architecture: A cascade power system comprises a non-isolated converter in a cascade configuration with an isolated converter and a controller that is coupled with the output of the isolated converter and the switching element of the non-isolated converter. The non-isolated converter steps-down the input voltage to a lower regulated voltage. The... Agent: Flextronics Ap, LLC

20120113693 - Power converter circuit: A power converter circuit includes a diode group, a relay, a DC section and an inverter. The diode group includes a plurality of diodes arranged to rectify an output voltage of an alternating-current power supply. The relay is provided at a point located closer to the alternating-current power supply than... Agent: Daikin Industries, Ltd.

20120113694 - Step-down converter and inverter circuit: A step-down converter having an improved efficiency has a common input, to which a DC voltage source for applying an input voltage can be connected, and two or more outputs, at each of which a DC voltage can be provided whose value is less than or equal to that of... Agent: Diehl Ako Stiftung & Co. Kg

20120113695 - Control method for converting power, and electronic power converter adapted to carry out said method: A control method and apparatus are provided to convert a DC voltage into alternating voltage. The apparatus includes a first inverter and a second inverter to generate a first alternating voltage and a second alternating voltage, respectively. Also included is an interphase transformer to combine these alternating voltages in parallel... Agent: Ingeteam Technology, S.a.

20120113696 - Inverter system having a decoupling switching element: An inverter system for converting a constant output signal of an energy-generating module, e.g., a solar cell module, into an alternating current signal, includes: an input port for receiving the constant output signal, an inverter circuit connected downstream from the input port and provided for generating the alternating current signal... Agent:

20120113697 - Apparatus for generating alternating current power by direct current supply brush that rotates with field pole generator, and apparatus for generating direct current power: The present invention relates to an apparatus for generating power by a direct current supply brush that rotates with a field pole generator, the apparatus comprising: a field pole generator which has a plurality of iron cores having a coil or wire wound around; a winding wire used for power... Agent:

20120113698 - Power conversion device: Disclosed is a power conversion device, wherein among the optical fiber cables used in control/communication, at least the majority of high-voltage optical fiber cables with a dielectric strength against the output voltages of a plurality of cells can be eliminated and thus a low-voltage optical fiber cable with a dielectric... Agent:

20120113699 - Converter: The or each converter limb defines first and second limb portions each limb portion including at least one switching element connected in series with a chain-link converter between a respective one of the first and second DC terminals and the AC terminal. The switching elements of the first and second... Agent: Alstom Technology Ltd

20120113700 - Systems and methods for reducing harmonic distortion in electrical converters: Systems and methods are provided for delivering energy using an energy conversion module. An exemplary method for delivering energy from an input interface to an output interface using an energy conversion module coupled between the input interface and the output interface comprises the steps of determining an input voltage reference... Agent: Gm Global Technology Operations, Inc.

20120113702 - Dc/dc converter with auxiliary converter for earth current compensation: A DC/DC converter for converting an input DC voltage between input lines into an output DC voltage between output lines includes: an AC current forward path connected via switching electric components to at least one of the output lines and at least one of the output lines; an AC current... Agent: Sma Solar Technology Ag

20120113701 - Inverter current measurement using a shunt resistor: A method for determining each current output of a three-phase inverter (102) comprises the following steps: inspecting an initial set of control signals for the inverter (102); identifying a measurement conflict when at least two of said control signals are asserted within a predetermined amount of time of each; if... Agent: Texas Instruments Incorporated

05/03/2012 > 20 patent applications in 16 patent subcategories.

20120106204 - Converter controlling apparatus and multiphase converter: A driving frequency setting portion is provided. The driving frequency setting portion sets a switching frequency of a switching element on the basis of a notification from a driving phase number switching portion. A ripple current detected by a current sensor is in inverse proportion to inductance of reactor. Since... Agent: Toyota Jidosha Kabushiki Kaisha

20120106205 - Power supply with open-loop protection and short-circuit protection: The power supply according to the present invention comprises a transformer, a power switch, a signal generating circuit, an on-time detection circuit, and a delay circuit. The transformer receives an input voltage and generates an output voltage. The power switch switches the transformer for regulating the output voltage. The signal... Agent: System General Corp.

20120106206 - Power supply with single stage converter for performing power factor correction and resonant conversion: The invention discloses a power supply having a single stage converter for performing power factor correction to reduce high-frequency harmonics in the input current and performing resonant conversion to achieve zero-voltage switching or zero-current switching for power conversion. The inventive single stage converter includes a switching circuit, a resonant circuit,... Agent: Delta Electronics, Inc.

20120106207 - Resonant transformer and resonant converter employing same: A resonant transformer and resonant converter are disclosed. The resonant transformer includes a first bobbin, a first primary winding coil, plural first secondary winding coils, a second bobbin, a second primary winding coil, plural second secondary winding coils and a magnetic core assembly. The first bobbin includes a first winding... Agent: Delta Electronics, Inc.

20120106208 - Semiconductor control device for a switching regulator and a switching regulator using the semiconductor control device: A semiconductor control device can include a current detection signal input terminal, a feedback signal input terminal, a driving signal output terminal and a voltage adjusting circuit that delivers a voltage similar to a voltage of a primary winding of the flyback transformer to the current detection signal input terminal.... Agent: Fuji Electric Co., Ltd.

20120106209 - Method for generating a current limit signal for a power converter without sensing an input voltage of the power converter: A method for generating a current limit signal for a power converter without sensing an input voltage of the power converter detects a current of a power switch of the power converter to obtain a current sense signal, counts a time for the current sense signal to increase from a... Agent: Richpower Microelectronics Corporation

20120106210 - Multi-phase power converters and integrated choke therfor: Power conversion systems and integrated multi-phase chokes providing high common mode to differential mode choke inductance ratios with circular and triangular shapes for concurrent differential filtering and common-mode voltage blocking in motor drives and other power conversion applications.... Agent: Rockwell Automation Technologies, Inc.

20120106211 - Power factor and line distortion method and apparatus: Today, power distribution systems can be used to supply power to many loads, and since many loads, such as servers, are reactive (i.e., have capacitors and/or inductors), line distortion and power factor can be an issue. Conventional techniques to correct for line distortion and power factor use a specialized circuit... Agent: Texas Instruments Incorporated

20120106212 - Power converter: [Means for Resolution] When it is determined that a bus voltage Vdc detected by a DC voltage detecting unit 24 is equal to or less than a predetermined reference voltage, a control device 20 allows a DC load control unit 23 to stop an operation of a DC load 30.... Agent: Mitsubishi Electric Corporation

20120106213 - Three-phase rectifier: A three-phase rectifier converts three-phase alternating current (AC) power supplied from a three-phase AC power supply into direct current (DC) power. The three-phase rectifier includes a full-wave rectifier circuit, a bidirectional switch circuit, and a controller. The full-wave rectifier circuit rectifies three-phase AC power to DC power. The bidirectional switch... Agent:

20120106214 - Circuit for converting dc into ac pulsed voltage: The present invention proposes a circuit for converting DC into AC pulsed voltage. The circuit comprises two controllable semiconductor switches. By controlling the opening and closing of the semiconductor switches, the circuit can operate in different modes, i.e. high input voltage mode and low input voltage mode. The circuit for... Agent: Koninklijke Philips Electronics N.v.

20120106215 - Power conversion apparatus and brown-out protection method thereof: A power conversion apparatus and a brown-out protection method are provided. The brown-out protection method includes sampling a rectification signal relating to an AC voltage received by the power conversion apparatus by adopting a discrete sampling means; and when a peak value of the sampled rectification signal has reached to... Agent: Power Forest Technology Corporation

20120106216 - Ac-dc converter with unity power factor: A method for construction of voltage or current power sources receiving an AC input, the power sources based on inclusion of a buffer stage feeding a converter operating with an output driver to a load. The buffer stage includes a buffer capacitance and a control means, such that the consumed... Agent:

20120106217 - Current controlled power converter: A current controlled power converter includes a converting part configured to convert a three-phase ac voltage into a dc voltage or converts a dc voltage into a three-phase ac voltage, ac side current detection portions configured to detect an ac side current of the converting part, dc side current detection... Agent: Daikin Industries, Ltd.

20120106218 - Power conversion apparatus: In order to widen an operational input voltage range of a power conversion apparatus and obtain a maximum efficiency value comparable to that in a case where the operational input voltage range is not widened by changing software but not hardware, provided is a power conversion apparatus, in which a... Agent: Mitsubishi Electric Corporation

20120106219 - Semiconductor device for wireless communication: Provided is a semiconductor device for wireless communication which achieves a reduction in leakage power and allows an improvement in power efficiency. For example, to external terminals, an antenna driver section for driving an antenna and a rectifying section for rectifying input power from the antenna are coupled. The antenna... Agent: Renesas Electronics Corporation

20120106220 - Switching module: A switching module includes a series-connected unit of a first flowing restriction element and a second flowing restriction element, the first flowing restriction element having an opening and closing function of opening and closing a flowing path of current, and the second flowing restriction element having at least one of... Agent: Denso Corporation

20120106221 - Electric power converter apparatus: An electric power converter apparatus includes an inverter circuit having a plurality of upper arm elements and a plurality of lower arm elements, a feedback controlling module calculating a voltage command value in order to control an output from the inverter circuit in a feedback control manner and a compensating... Agent: Denso Corporation

20120106222 - Method of operating an inverter by turning off the switching around a zero transition of the alternating output current: A method of operating an inverter for converting direct voltage into alternating voltage. The inverter has direct-voltage terminals and alternating-voltage terminals and a plurality of power switching elements that are clocked at high-frequency connected between the d.c. and a.c. terminals. The high-frequency clocking of the power switching elements of the... Agent: Diehl Ako Stiftung & Co. Kg

20120106223 - Circuit for converting power between a three-phase grid and a single-phase grid: Described is a circuit for converting electric power between a three-phase grid and a single-phase grid. The circuit includes, in at least one embodiment, a first transformer that is connected to the three-phase grid, a number of first converter stages assigned to the first transformer, the associated DC intermediate circuits... Agent: Converteam Gmbh

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