Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems August inventions list 08/11

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.
08/25/2011 > patent applications in patent subcategories.

20110205761 - Controller for a resonant power converter: This invention relates to circuits and methods for controlling a resonant power converter. Control of the power converter may comprise comparing an output voltage or current of the converter to at least one reference voltage or current; enabling primary side switching signals based on a first selected result of the... Agent:

20110205762 - Integrated-type high step-up ratio dc-ac conversion circuit with auxiliary step-up circuit: An integrated-type high step-up ratio DC-AC conversion circuit with an auxiliary step-up circuit applies to converting a low DC voltage of alternative energy into a high AC voltage. The conversion circuit uses an isolated Cuk integration unit and an auxiliary step-up unit to form a multi-phase input and uses parallel... Agent:

20110205763 - Power converter with an adaptive controller and method of operating the same: A controller for a power converter, and method of operating the same. The controller improves power converter operating efficiency by regulating an internal power converter operating characteristic depending on a value of a power converter parameter measured after a manufacturing step, or an environmental parameter, preferably employing a table with... Agent:

20110205764 - System and method for soft-starting an isolated power supply system: One embodiment of the invention relates to a switching control system for controlling an isolated power supply. The system includes a pulse-width modulation (PWM) switching controller configured to generate at least one primary switching signal having a first duty-cycle for activating at least one primary-side switch of the isolated power... Agent:

20110205765 - Inductance element, method for manufacturing the same, and switching power supply using the same: An inductance element (1) includes a doughnut-shaped magnetic core (2) and a bottomed container (3) for housing the doughnut-shaped magnetic core (2). The bottomed container (3) has a cylindrical outer wall portion, a cylindrical inner wall portion, a bottom portion, an open section and a hollow portion. The open section... Agent: Toshiba Materials Co., Ltd.

20110205766 - Power conditioning unit: A power conditioning unit for delivering power from a power source to a mains utility supply, the power conditioning unit comprising a plurality of input terminals for connecting to the power source, a plurality of output terminals for connecting to the mains utility supply, a voltage increasing converter connected to... Agent:

20110205768 - Chain-link converter, method for starting chain-link converter and static compensator system: A chain-link converter including one or more phases. The one or more phases each includes one or more series-connected converter cells. The chain-link converter includes a power source connected to a converter cell of one of the one or more phases. A cost-efficient start-up of the converter is provided. The... Agent:

20110205767 - Method for controlling a multiphase interleaving converter and corresponding controller: A method is provided for controlling a converter of the multiphase interleaving type. According to the method, there is detected when a change of the load applied to an output terminal of the converter occurs. All the phases of the converter are simultaneously turned off, and a driving interleaving phase... Agent: Stmicroelectronics S.r.i.

20110205769 - Power sharing method and system for two-stage power supplies: One embodiment of the invention provides a method for optimizing the power consumption in a redundant power system. A pulse width modulation waveform is generated in each of a first and second power supply to control the power output of each power supply. In response to the system load reaching... Agent: International Business Machines Corporation

20110205770 - Power source controlling semiconductor integrated circuit and insulated direct-current power source device: A power source controlling IC controlling a current flown through the primary side winding of a transformer is provided with an external terminal to which a detected voltage from the secondary side is fed back through a photocoupler; a control circuit generating and outputting a control signal of a switching... Agent: Mitsumi Electric Co., Ltd.

20110205771 - Closed-loop control method for an hvdc transfer installation having a dc voltage intermediate circuit and self-commutated converters: A closed-loop control method for at least two converters in an energy transmission and/or distribution system. The converters may be controlled either as rectifier or inverter and they are connected to each other by a DC link. A measured DC voltage and a measured DC current is measured at each... Agent: Siemens Aktiengesellschaft

20110205772 - Power factor corrected switched mode power supply: A power factor corrected switched mode power supply including a phase shifter that senses the mains frequency and phase shifts it to produce a phase shifted signal which modulates the switching signal supplied to the switches based on the phase shifted signal. The rate of change of the frequency of... Agent:

20110205773 - Method and system to allow for high dc source voltage with lower dc link voltage in a two stage power converter: A system for supplying AC power from a DC power source, such as a photovoltaic array is disclosed. The system includes a converter and an inverter coupled by a DC link. Control methods and systems are provided to maintain the DC source voltage and the DC link voltage below the... Agent: General Electric Company

08/18/2011 > patent applications in patent subcategories.

20110199791 - Reverse energy recovery circuit: A reverse energy recovery circuit is located on a power conversion circuit equipped with a transformer which has a primary winding side connected to a power switch driven by a control unit. The primary winding side has a first end and a second end bridged by the reverse energy recovery... Agent:

20110199792 - Converter comprising at least one normally on semiconductor switch: A converter for converting a DC input voltage includes two input lines receiving the DC input voltage; at least one normally off semiconductor switch which is not conductive without application of a control voltage to its gate and which is provided in one of the input lines. The converter also... Agent: Sma Solar Technology Ag

20110199794 - Method for controlling a switching regulator and related switching regulator: An embodiment of a power-supply controller comprises a switching-control circuit, an error amplifier, and a signal generator. The switching-control circuit is operable to control a switch coupled to a primary winding of a transformer, and the error amplifier has a first input node operable to receive a feedback signal, a... Agent: Stmicroelectronics S.r.l.

20110199793 - Switching mode power supply with primary side control: The present technology are directed to switching mode power supplies with primary side control. In one embodiment, the switching mode power supply provides an equivalent current signal which represents a load current. The equivalent current signal is then used to control a switching circuit in the switching mode power supply.... Agent:

20110199795 - Method and apparatus for a high voltage power supply circuit: A power converter is disclosed. An example power converter includes an energy transfer element coupled between a power converter input and a power converter output. A power switch is coupled to the energy transfer element. A control circuit is coupled to receive a feedback signal representative of the power converter... Agent: Power Integrations, Inc.

20110199796 - Structure of a power supply: An improved structure of a power supply is based on an emitter-switched PWM controller and special structure transformer. An improved structure of a power supply mainly describes two primary side regulation (here called “PSR”) solutions based on above PWM controller that is used in charger/adapter solutions. These PSR solutions employ... Agent:

20110199797 - Synchronizing frequency and phase of multiple variable frequency power converters: In an embodiment, a power converter system includes a plurality of variable frequency power converters and a plurality of synchronization circuits. Each variable frequency power converter has a switching frequency. Each synchronization circuit is associated with a respective one of the plurality of variable frequency power converters. A control circuit... Agent:

20110199798 - Method and apparatus for implementing an unregulated dormant mode in a power converter: A control circuit for use in a power converter with an unregulated dormant mode of operation is disclosed. In one aspect a power converter includes a drive signal generator that is coupled to generate a drive signal to control switching of a power switch coupled to the control circuit to... Agent: Power Integrations, Inc.

20110199799 - Self-driven ac-dc synchronous rectifier for power applications: Systems, methods, and devices that employ self-driven gate-drive circuitry to facilitate controlling power switches to emulate a diode bridge to synchronously rectify a power signal are presented. A single-phase or multi-phase synchronous rectifier can comprise at least a first pair of switches of a first conducting path and a second... Agent: City University Of Hong Kong

20110199801 - Energy recovery device in a variable-frequency drive: A variable-frequency drive that includes a DC power supply bus with a positive line and a negative line, and an inverter module powered by the DC bus for supplying a variable voltage to an electric load. The inverter includes a first DC/DC converter including output terminals connected in series on... Agent: Schneider Toshiba Inverter Europe Sas

20110199800 - Power conversion device: Connection portions (225UP through 225WP) to which upper arm control terminals (320UU through 320UW) are connected are disposed at a first edge portion of a drive circuit board (22). And connection portions (225UN through 225WN to which lower arm control terminals (320LU through 320LW) are connected are disposed at a... Agent: Hitachi Automotive Systems, Ltd.

20110199802 - Single ended power converters operating over 50% duty cycle: This invention discloses apparatus and methods for increasing the duty cycle of the single ended power converters surpass 50 percent limitation by adding active switch-capacitor network to the primary circuit and several inversion circuits can be realized to convert a DC input to an AC output. The circuits comprise two... Agent: National Taiwan University Of Science And Technology

08/11/2011 > patent applications in patent subcategories.

20110194309 - Method and apparatus to control a power converter having a low loop bandwidth: A power converter controller is disclosed. An example power converter controller includes a feedback sensor circuit coupled to receive a feedback signal representative of an output of the power converter. The controller also includes a feedback sampling signal generator coupled to generate a feedback sampling signal coupled to be received... Agent: Power Integrations, Inc.

20110194310 - Forward converter transformer saturation prevention: A power converter in one aspect limits the magnetic flux in a transformer. A control circuit included in the power converter includes a pulse width modulator, logic circuits and saturation prevention circuits. The saturation prevention circuits assert a first signal when a first integral value of the input voltage reaches... Agent: Power Integrations, Inc.

20110194313 - Active snubber circuit and power supply circuit: An active snubber circuit for a switching power supply, in which a main switching element repeatedly operates an on-off operation so that current intermittently flows in a primary coil, has a capacitor for surge voltage absorption, a sub-switching element and a sub-control circuit controlling the sub-switching element. A circuit in... Agent: Sanken Electric Co., Ltd.

20110194312 - Method and apparatus for determining zero-crossing of an ac input voltage to a power supply: An example controller for a switched mode power supply includes a drive signal generator and a zero-crossing detector. The drive signal generator is to be coupled to control switching of a switch included in the power supply to regulate an output of the power supply. The zero-crossing detector is coupled... Agent: Power Integrations, Inc.

20110194311 - Phase angle measurement of a dimming circuit for a switching power supply: An example controller for a switched mode power supply includes a zero-crossing detector, a feedback reference circuit, and a drive signal generator. The zero-crossing detector is coupled to generate a zero-crossing signal representative of a length of time that a zero-crossing condition of an input voltage of the power supply... Agent: Power Integrations, Inc.

20110194314 - Switching power supply device: A switching power supply device including: a power transformer including a primary winding, a secondary winding, and an auxiliary winding; a switching element which is connected to the primary winding; an output voltage generation circuit which converts, into a direct-current voltage, a voltage induced in the secondary winding; a secondary-side... Agent:

20110194315 - Power supply circuit with a control terminal for different functional modes of operation: A method of operation for flyback power converter includes operating a controller of the flyback power converter in a regulation mode when a control signal is below a first threshold. The control signal is provided as an input to a terminal of the flyback power converter. When the control signal... Agent: Power Integrations, Inc.

20110194316 - Switching power supply device: A switching power supply device including: a switching element which performs a switching operation; an output voltage generation circuit; a transformer reset detection circuit which generates a transformer reset signal; a secondary-side on-time signal generation circuit; a feedback control circuit which generates a feedback signal; a switching element drive circuit... Agent:

20110194317 - Stacked flyback converter with independent current loop control: A voltage converter includes a transformer with a pair of primary coils and a secondary coil. The converter has a DC input and a capacitor bank, having a pair of capacitors, is connected across the DC input. A switch is associated with each primary coil. A gate drive feedback module... Agent: Abb Inc.

20110194318 - Electrical power conversion apparatus: An electrical conversion apparatus including a converter and an inverter comprises a capacitor that stores a DC electrical power; a ripple detection unit that detects a ripple of an RMS power that is generated from the inverter; a voltage measuring instrument that measures a voltage across the capacitor; a DC... Agent: Mitsubishi Electric Corporation

20110194319 - 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 arranged in parallel and electrically connected to the DC power supply, for converting the direct current power generated by the... Agent: Honda Motor Co.,ltd.

20110194320 - Power device: A power device includes a power supply module, a first electrical isolation unit, a second electrical isolation unit, a feedback control unit, and a comparing unit. The power supply module includes a feedback compensating terminal and an output terminal, the feedback compensating terminal provides a related voltage of output power,... Agent: Unihan Corporation

20110194321 - Dc power supply apparatus: A DC power supply apparatus comprising: a rectifying circuit including, a first rectifying portion, a second rectifying portion, a third rectifying portion and a fourth rectifying portion; a current detection portion; a first switching portion; and a second switching portion; wherein each of the first rectifying portion cooperatively operating with... Agent: Mitsubishi Electric Corporation

20110194322 - Power conversion apparatus: The power conversion apparatus includes electronic components constituting a power conversion circuit, a cooler for cooling at least some of the electronic components, and a case housing the at least some of the electronic components and the cooler. The at least some of the electronic components and the cooler are... Agent: Denso Corporation

20110194323 - Method for operation of a converter circuit, as well as an apparatus for carrying out the method: A method is provided for operation of a converter circuit. The converter circuit has at least two phase modules, where each phase module has a first and a second sub-converter system, and the sub-converter systems for each phase module are connected in series with one another. Each sub-converter system includes... Agent: Abb Schweiz Ag

20110194324 - Generation of high-frequency, high-power electrical signals from low-frequency, low-power lattice network structures as sources: An apparatus and method for outputting high-frequency, high-power signals from low-frequency, low-power input is disclosed. The apparatus and method may provide a two-dimensional nonlinear lattice having a plurality of inductors and voltage-dependent capacitors intersecting at a plurality of nodes. Two or more adjacent boundaries of the nonlinear lattice may be... Agent: Cornell University

08/04/2011 > patent applications in patent subcategories.

20110188267 - Shift full bridge power converting system and control method thereof: A phase shift full bridge power converting system and a control method has the phase shift full bridge power converting system with a power converter, a controller, a load state detecting module, a switching controller, a switch module, a command generating module, a comparator, and a modulator module. The load... Agent:

20110188268 - Signal status diagnosing device for external control means to be activated when fed with driving electric power by on/off signal transmitted through insulaiing means: This aims to provide a signal status diagnosing device for an external control means, which is enabled even by a simple constitution to prevent the rise of a production cost due to the increase in a parts count or the complexity of a circuit constitution, and which can perform a... Agent:

20110188269 - Switching power-supply apparatus: In a switching power-supply apparatus, a primary-side power converter circuit includes a half bridge system and a synchronous rectifier circuit is provided as a rectifier circuit of a secondary-side power converter circuit. An on time ratio of the on time of a first switching element to the on time of... Agent: Murata Manufacturing Co., Ltd.

20110188270 - Circuit: A circuit comprising a power factor correction stage having a DC input, a ground input, a DC output and a ground output; a capacitor; a diode; and discharge means. A first terminal of the diode is connected to an input of the power factor correction stage, a second terminal of... Agent: Nxp B.v.

20110188271 - Switching regulator device: A switching regulator device including a power conversion transformer for converting an input voltage from a power source at a primary side to a predetermined output voltage and outputting the output voltage to a load circuit connected to a secondary side, a power converter circuit that has a primary-side circuit... Agent: Honda Motor Co., Ltd.

20110188272 - Circuit for direct energy extraction from a charged-particle beam: Provided herein is a fusion energy extraction circuit (FEEC) device having a grid-tied bidirectional converter and a resonant converter. The resonant converter can include an inverse cyclotron converter with two or more or quadruple plates and a plurality of circuit switches. The bidirectional converter can include a three-phase grid-tied converter.... Agent:

20110188273 - Power factor correction stage: A power factor correction stage comprising: an input terminal configured to receive an input signal; an output terminal configured to provide an output signal; a first converter stage and one or more further converter stages, wherein each of the converter stages is connected to the input terminal and the output... Agent: Nxp B.v.

20110188274 - Fault condition protection: A regulator for a switched mode power supply includes switching regulator logic, a counter and a switching transistor. The switching regulator logic is coupled to receive a feedback signal and to generate a switching signal in response. The feedback signal periodically cycles between a first state and a second state... Agent: Power Integrations, Inc.

20110188275 - Method for starting up dc-dc converter: Aspects of the invention provide a method for starting up a DC-DC converter by which an output voltage can be prevented from overshooting and body diodes of switching devices can be prevented from reverse recovery. In the start-up method, the phases of gate signals of third and fourth switching devices... Agent: Fuji Electric Holdings Co., Ltd.

20110188276 - Circuit arrangement having a boost converter, and inverter circuit having such a circuit arrangement: An inverter circuit contains a first and second DC sources for providing a DC voltage, a common boost converter for boosting the DC voltage, an intermediate circuit capacitor connected between the outputs of the common boost converter, and an inverter for converting the DC voltage provided by the capacitor into... Agent: Diehl Ako Stiftung & Co. Kg

20110188277 - Circuit configuration with a step-up converter, and inverter circuit having such a circuit configuration: An inverter circuit contains a first and second DC sources for providing a DC voltage, a common step-up converter for boosting the DC voltage, an intermediate circuit capacitor connected between the outputs of the common step-up converter, and an inverter for converting the DC voltage provided by the capacitor into... Agent: Diehl Ako Stiftung & Co. Kg

20110188278 - Electron avalanche drive circuit:

20110188280 - Electric power converter: An electric power converter includes a cooler and an electronic circuit. The cooler includes a heat sink, a cooling fan, and a wind tunnel. A plurality of radiator fins are provided on a heat-sink base in the heat sink. The cooling fan is configured to feed cooling air through the... Agent: Kabushiki Kaisha Yaskawa Denki

20110188279 - Power converter: A power converter including a switching element, a switching power module containing a driving circuit for driving the switching element, a smoothing capacitor module for smoothing an input to the switching power module, and a heat sink for cooling the switching power module, wherein the switching power module is mounted... Agent: Honda Motor Co., Ltd.

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