Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems July category listing 07/12

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.
07/26/2012 > 17 patent applications in 13 patent subcategories.

20120188794 - Adaptive bleeder circuit: An adaptive bleeder circuit is applicable to a power converter, in which the power converter has a transformer primary side and a transformer secondary side, and the power converter enables input power to be selectively input or not input to the transformer primary side through a pulse-width-modulated signal. The adaptive... Agent: Macroblock, Inc.

20120188795 - Apparatus and system for transformer frequency control: An apparatus and a system include a multiplier circuit for receiving a sensed voltage and current of a of a load resistance coupled to a rectified voltage from a transformer's output whose input is from a DC-to-AC converter being supplied from a DC power generator having an internal resistance. The... Agent:

20120188796 - Power coupling system and method: Systems and methods for the coupling of power through an isolation transformer. The systems generally include a primary side electrically connectable to the primary winding of an isolation transformer, a secondary side electrically connectable to the secondary winding of the isolation transformer, a primary side switch sending power pulses to... Agent:

20120188797 - Switching power source apparatus: A switching power source apparatus includes a first series circuit including a first switch element and a second switch element, a second series circuit including a resonant capacitor, a resonant reactor, and a primary winding of a transformer, a rectifying-smoothing circuit of a voltage of a secondary winding of the... Agent: Sanken Electric Co., Ltd.

20120188800 - Asymmetric switch forward converter: A switching circuit for use in a power supply includes a first active switch coupled to a first terminal of a primary winding of a transformer. A second active switch is coupled to a second terminal of the primary winding of the transformer. An output capacitance of the first active... Agent: Power Integrations, Inc.

20120188799 - Method and apparatus for increasing the power capability of a power supply: One example controller for a power supply includes an oscillator, a drive signal generator, and a restart circuit. The oscillator generates a clock signal and the drive signal generator controls switching of a switch to regulate an output of the power supply in response to the clock signal. The restart... Agent: Power Integrations, Inc.

20120188798 - Switching power source and image forming apparatus having switching power source: In a converter, when an output voltage is set to a low voltage, a switching element is turned on according to a pulse voltage induced in an auxiliary winding having the same winding direction as that of a primary winding of a transformer.... Agent: Canon Kabushiki Kaisha

20120188801 - Flyback power supply system: A flyback power system includes a rectifier and filter circuit, a pulse width modulation (PWM) controller, a feedback circuit, a master converter circuit, a slave converter circuit, and a slave converter control circuit. The master converter circuit continuously converts power signals from the rectifier and filter circuit into first direct... Agent: Ampower Technology Co., Ltd.

20120188802 - Switch controller, switch control method, converter using the same, and driving method thereof: Disclosed are a switch controller, a switch control method, a converter using the same, and a driving method thereof. A first voltage is generated by using a voltage that is input to an input terminal, and a soft start signal is generated by using the first voltage during a soft... Agent:

20120188803 - Converter with reactive power compensation: A voltage source converter for a HVDC power transmission system is disclosed. According to one aspect, the voltage source converter includes at least one phase element having series connected diodes configured to interconnect, in use, a DC network and an AC network. The voltage source converter further includes at least... Agent: Alstom Technology Ltd.

20120188804 - Current supply arrangement for the rectifying three-phase ac current into multi-pulse dc current: A current supply arrangement (A, B) for rectifying three-phase current into multi-pulse DC current with at least one three-phase AC current transformer with a transformer core or three single-phase AC current transformers, each having a transformer core, wherein the three-phase AC current transformer includes three first secondary-side coils (L21, L22,... Agent:

20120188805 - Power supply conversion circuit of multi-phase power supply: A power supply conversion circuit includes a PWM chip and many sub-circuits. Each sub-circuit includes an inductor, a first capacitor connected to ground, a first resistor connected in series with the first capacitor to form a branch parallel to the inductor, a differential pair having a first differential signal trace... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120188806 - Power distribution system: A power distribution system includes a DC-DC converter which outputs a DC power after converting the DC power outputted from a DC power source to a desired voltage level. In the power distribution system, the DC-DC converter is controlled so as to operate only when the input voltage falls in... Agent: Panasonic Corporation

20120188807 - Stacked structure of power conversion apparatus: A stacked structure of a power converter is disclosed. The stacked structure has a power conversion circuit that provides an output or input of alternating current in three phases and is composed of odd-numbered parallel-connected power semiconductor element modules for each phase, and a heat sink for cooling the power... Agent: Fuji Electric Co., Ltd.

20120188809 - Power source circuit efficient in conversion from alternating current to direct current: A power source circuit which includes input portions, a limiting resistor connected to one of the input portions, a rectifier connected to the limiting resistor, a sampling resistor connected to the rectifier, output portions connected to the rectifier, a control circuit, and a switch circuit connected to the control circuit.... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20120188810 - Rectifier system: A rectifier system, e.g., for a generator, includes a bridge system having a predefined number of rectifier elements, at least one rectifier element being a rectifier element having at least one reverse-voltage dependent characteristic curve in a predefined range, and one of the negative diodes having a higher reverse saturation... Agent:

20120188808 - Timing device without neutral line: A timing device without a neutral line is disclosed, comprising a hot line (L line) input, a hot line (L line) output, a second filter module, a triac, a current limiting module, a current rectifying module, a SCR, a first filter module, a MCU, a display module, an operation interface... Agent:

07/19/2012 > 7 patent applications in 7 patent subcategories.

20120182769 - Dc-dc converter, power supply unit and an information processing apparatus: A DC-DC converter is disclosed that includes a first winding of a first transformer to which direct current power is supplied, a switching element configured to be connected in series with the first winding of the first transformer, a first winding of a second transformer and a capacitor configured to... Agent: Fujitsu Limited

20120182770 - Power converter: The power converter includes a diode rectifier which rectifies alternating current power output from an alternating current power supply, a reactor provided between the alternating current power supply and the diode rectifier, an inverter circuit to which power output from the diode rectifier is directly supplied, and a capacitor provided... Agent:

20120182771 - Converter with active fault current limitation: A voltage source converter for high voltage DC power transmission is disclosed. According to one aspect, the voltage source converter is connectable between a DC network and another electrical network to interconnect the DC network and the other electrical network. The voltage source converter includes a converter unit configured to... Agent: Alstom Technology Ltd.

20120182772 - Power conversion apparatus: A control circuit, during a positive period in which current flows from a power conversion apparatus to a load, causes a second snubber capacitor to discharge by controlling a second auxiliary switch to be turned on while a second main diode is turned on, and during a negative period in... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20120182773 - Method for sharing input and output ports: Disclosed is a method for sharing input/output ports among inverters. A sharing method by a master inverter according to the present disclosure is such that data to be outputted to an output port of a slave inverter is transmitted to the slave inverter where data inputted to input port of... Agent: Lsis Co., Ltd

20120182774 - Method for operating a converter in a system for generating electrical energy: Described is a method for operating a converter for a system for generating electrical energy. In an embodiment of the method, the output voltage of the converter is converted to a d, q coordinate system, wherein the d, q coordinate system is assigned to the frequency of the voltage for... Agent: Converteam Gmbh

20120182775 - Three-phase buck-boost power factor correction circuit and controlling method thereof: The configurations of a three-phase buck-boost power factor correction (PFC) circuit and a controlling method thereof are provided in the present invention. The proposed circuit includes a first single-phase buck-boost PFC circuit receiving a first phase voltage and having a first and a second output terminals and a neutral-point for... Agent: Delta Electronics, Inc.

07/12/2012 > 13 patent applications in 11 patent subcategories.

20120176816 - Starting up a dc/dc converter having a high-frequency transformer: During startup of a DC/DC converter having a high-frequency transformer whose primary winding is supplied with current from an input-side DC link via an inverter bridge having pulsed switches and whose secondary winding is used to charge an output-side DC link via a rectifier bridge. The switches of the inverter... Agent: Sma Solar Technology Ag

20120176817 - Dc-dc converter: A DC-DC converter has at least first and second power converters, with the inputs of the power converters connected in series so that DC current through the input of the first power converter also flows through the input of the second power converter, and the outputs of the power converters... Agent: Texas Instruments Incorporated

20120176818 - Feedback of output voltage error via current sense winding: A power converter constituted of: a control circuitry; an electronically controlled switch responsive to the control circuitry; a power transformer exhibiting a primary winding and a secondary winding; a sense transformer comprising a primary current sense winding, an error current sense winding and a feedback winding, the primary current sense... Agent: Microsemi Corporation

20120176819 - Adaptively controlled soft start-up scheme for switching power converters: A switching power converter provides regulated voltage to a load according to a desired regulation voltage. The switching power converter includes a transformer coupled to a switch and a switch controller for generating a control signal to control switching. The switch controller monitors a sensed voltage representing the output voltage... Agent:

20120176821 - Startup circuit and input capacitor balancing circuit: In one embodiment, an input capacitor balancing circuit for a power supply is provided. The circuit includes an input capacitance operable to filter input power for the power supply. The input capacitance has a first capacitor and a second capacitor coupled in series between an input voltage and a first... Agent:

20120176820 - Switching power converter having optimal dynamic load response with ultra-low no load power consumption: A switch controller is disclosed that adaptively controls the operating frequency of a switching power converter in order to improve one-time load response and repetitive dynamic load responses. During a transition from a high load to low load condition, the switch controller clamps the operating frequency of the switching power... Agent: Iwatt Inc.

20120176822 - Synthetic ripple hysteretic powder converter: A novel switching hysteretic power converter is presented. The converter includes the generation of a synthetic ripple signal and a feedback network to combine a signal in phase with the inductor current with a signal proportional to the regulated output voltage. The presented approach provides a switching boost converter with... Agent:

20120176823 - Power converter with automatic mode switching: A power converter is provided that has an alternating-current (AC) to direct-current (DC) switched-mode power converter circuit that converts alternating-current power into direct-current power for powering an attached electronic device. Power can be conserved by automatically placing the power converter circuit in a low-power standby mode of operation whenever the... Agent:

20120176824 - Methods and apparatus for digital peak current mode control for switch-mode power converters: In a first aspect, a digital control circuit is provided for use with a switch-mode power converter that receives an input signal at a first input node and a control signal at a second input node, and that provides an output signal at a first output node and a current... Agent:

20120176825 - Auxiliary automotive power supply: The purpose for this device is to provide electrical power to an automotive electrical control system from a residential electrical service. The power from an auxiliary power supply will maintain the operational data stored within the memory of the automotive computer and data within other electronic devices. This is accomplished... Agent:

20120176826 - Source and multiple loads regulator: A circuit that has one or more control units that divide a load into two or more load groups, with each load group comprised of at least one load element. The one or more control units directing power from a power source to one or more of the load groups... Agent: Braxton Engineering, Inc.

20120176827 - Controller for secondary side control of a switch, power converter, and related synchronous rectification control method: A controller, power converter, and a related method for secondary side control of a switch are disclosed herein. An embodiment of the present invention includes a controller. The controller comprises a drain to source voltage (VDS voltage) input configured to receive the VDS voltage of a transistor, a gate drive... Agent: Integrated Device Technology, Inc.

20120176828 - Semiconductor devices and power conversion systems: A semiconductor device includes first semiconductor layer of a first conductivity type; a second semiconductor layer of a second conductivity type that is formed near a surface of the first semiconductor layer; a first main electrode that is electrically connected to the second semiconductor layer; a third semiconductor layer of... Agent: Hitachi, Ltd.

07/05/2012 > 25 patent applications in 18 patent subcategories.

20120170319 - Apparatus and method for converting a low ac voltage to a high dc voltage: An apparatus, including an AC voltage transforming device increases an AC voltage input signal to a higher AC voltage signal, an AC to DC voltage conversion device which converts the higher AC voltage signal to a DC voltage, wherein the DC voltage has a higher voltage level than the peak... Agent:

20120170322 - Apparatus, systems and methods for power supply employing single-stage forward voltage conversion: A method of supplying direct-current (DC) power is presented herein. In the method, a first electrical signal and a second electrical signal are received. The first electrical signal alternates between a high voltage and a low voltage according to a constant duty cycle. The second electrical signal is synchronized with... Agent: Echostar Technologies L.L.C.

20120170323 - Charging ac adaptor: A charging AC adaptor includes: a first diode bridge connected to an AC terminal; a chopper controller connected to the first diode bridge; an insulating air core transformer connected to the chopper controller; a second diode bridge connected to a secondary side of the insulating air core transformer; a DC... Agent: Rohm Co., Ltd.

20120170321 - Feedback circuit with remote on/off control for power supply: A feedback circuit of power supply according to the present invention comprises a switching controller, an optocoupler, an error amplifier and a timer. The switching controller generates a switching signal in accordance with a feedback signal for regulating an output voltage of the power supply. The optocoupler generates the feedback... Agent: System General Corp.

20120170320 - Method and apparatus for generating current command value for tracking maximum power point in solar energy generating system: There are provided a method and an apparatus for generating a current command value for tracking the maximum power point of a solar energy generating system. The apparatus includes: a voltage detector detecting a voltage input into the flyback power converter; a first calculator calculating an output power from the... Agent: Samsung Electro-mechanics Co., Ltd.

20120170324 - Method and apparatus for resonant converter control: A method and apparatus for controlling resonant converter power production. In one embodiment, the method comprises determining accumulated charge processed by a resonant converter; dynamically determining a level of the accumulated charge that generates a predetermined output power; and controlling a switching cycle of the resonant converter based on the... Agent: Enphase Energy, Inc.

20120170325 - High efficiency solar wind inverter with hybrid dcdc converter: The present invention is a new design topology for solar/wind inverters using a new hybrid DC/DC converter design. This hybrid converter topology eliminates a difficult design compromise between lowering the minimum input voltage to harvest more solar/wind energy and achieving high power conversion efficiency when the input voltage is high... Agent:

20120170327 - Apparatus and method for detecting a change in output voltage of an isolated power converter: An output voltage sensor for use in a power converter controller includes a first pulse sampler circuit coupled to receive a feedback signal representative of an output of a power converter. The first pulse sampler circuit is coupled to capture a first peak voltage representative of a second peak of... Agent: Power Integrations, Inc.

20120170329 - Method and apparatus for implementing an unregulated dormant mode in a power converter: A control circuit includes a drive signal generator controlling switching of a power switch to regulate a flow of energy to one or more loads coupled to a power converter output. A regulator circuit charges a capacitor to a first voltage and stops charging the capacitor if an energy requirement... Agent: Power Integrations, Inc.

20120170328 - Multimodal led power supply with wide compliance voltage and safety controlled output: A power supply for a non-linear load such as a light emitting diode load uses a voltage dynamic of a fly-back topology to correct for a rippling of an unfiltered rectified line voltage. Efficiency is optimized by utilizing a magnetic core bi-directionally. A transformer has two primaries 11,12 that are... Agent: Robertson Transformer Co.

20120170326 - Primary-side controlled power converter with an rc network and method thereof: This invention provides a primary-side controlled power converter comprising: an RC network coupled to an auxiliary winding of a transformer of the primary-side controlled power converter to detect a reflected voltage of the transformer for generating a reflected signal, and a controller coupled to the RC network to receive the... Agent: System General Corporation

20120170330 - Single-stage pfc converter with constant voltage and constant current: An exemplary embodiment of a power converter is provided. The power converter includes a transformer, a power device, a switching controller, and a capacitor. The power device is coupled to the transformer for switching the transformer to product output of the power converter. The switching controller receives a feedback signal... Agent: System General Corporation

20120170331 - Apparatus and method of power control: The present disclosure is related to a power control apparatus and a method for controlling power, more specifically to a power control apparatus that controls the risk of overcurrent in a power generator when the voltage in the power grid is low. In accordance with an embodiment of the present... Agent: Samsung Heavy Ind. Co., Ltd.

20120170332 - Emi mitigation of power converters by modulation of switch control signals: The present invention provides for EMI mitigation in switching circuitry, such as power converters, by implementing a controlled, non-random change in frequency in every cycle of switch control signals based on a static or dynamically changing modulation cycle. This permits frequency spreading across a wide range while avoiding excessive jitter... Agent:

20120170333 - Semiconductor power conversion apparatus: A commanded negative-sequence current is added to a commanded current so as to suppress double-frequency pulsation on the DC side. The commanded negative-sequence current is found from three values (i.e., the detected value of positive-sequence voltage vector on the power-supply side, the detected value of negative-sequence voltage vector, and a... Agent: Hitachi, Ltd.

20120170334 - Hysteretic cl power converter: A novel switching hysteretic power converter is presented. The power converter combines the function of a capacitive charge pump with the function of an inductive step down converter to obtain a switching boost converter with a much simpler control method with respect to conventional inductive boost power converters. The hysteretic... Agent:

20120170335 - Switch control circuit, converter using the same, and switch controlling method: An input voltage rectified from an AC input in a converter is transmitted to an inductor, and output power is generated from an inductor current by the input voltage. The converter includes a power switch connected to the inductor to control the inductor current and a sense resistor having a... Agent:

20120170336 - Power conversion circuit: The present invention discloses a power conversion circuit. A control module controls a pulse width modulation regulator to regulate a duty cycle of a DC-DC converter according to the direct current link voltage of the DC-DC converter and the output current and voltage of a renewable power supply. The control... Agent: Chung-hsin Electric And Machinery Manufacturing Corp.

20120170337 - Voltage multiplication in a wireless receiver: A wireless energy transfer receiver includes an input configured to receive alternating current (AC) electric energy and an output configured to make available direct current (DC) electric energy. The receiver further includes a rectification component configured to convert the AC energy received at the input into DC energy available at... Agent:

20120170338 - Converter: A voltage source converter (10) for use in three-phase high voltage DC power transmission and reactive power compensation. The voltage source converter (10) comprises three converter limbs (12,14,16) connected in a bridge circuit arrangement wherein each of first and second converter limbs (12,14) includes a multilevel converter (18) and a... Agent:

20120170339 - Rectifier circuit with a voltage sensor: A rectifier circuit with a synchronously controlled semiconductor element comprising at least one field effect transistor with a control electrode and two switching electrodes. The control electrode operates the reverse state and the forward state between the switching electrodes. For this, the rectifier circuit comprises at least one driver which... Agent: Infineon Technologies Austria Ag

20120170340 - Power inverter: A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board arranged in order in the housing. The base plate is arranged with the fringes fixed to the inner... Agent: Hitachi, Ltd.

20120170341 - Method and apparatus for resonant power conversion: A method and apparatus for providing multi-phase power. In one embodiment, the apparatus comprises a cycloconverter controller for determining a charge ratio based on a reference waveform; and a cycloconverter, coupled to the cycloconverter controller and to a multi-phase AC line, for selectively coupling an alternating current to each line... Agent: Enphase Energy, Inc.

20120170342 - U-socket, an ac socket with port powering device, switch and fault detect lamp: An AC fixture has one or more AC sockets, and a port powering or charging device with one or more ports. The port powering or charging device has a circuit board with a power circuit which is configured to convert AC power, from AC wires connected to the AC socket,... Agent:

20120170343 - Electric power conversion apparatus: An electric power conversion apparatus comprises: three conversion units; a backup conversion unit that can be substituted for any one of the conversion units; and a backup terminal conductor unit. The conversion units, which are mounted on a converter board disposed in a case, can convert a DC current to... Agent:

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