Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems July category listing 07/10

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.
07/29/2010 > patent applications in patent subcategories.

20100188869 - Power system having ac and dc power sources: A power system (110; 210; 310) combines a power source (14) having a DC output (20A, 20B) with an AC supply from the AC grid (12) to provide AC to customer's loads (16) and DC to various DC auxiliary loads (134, 134A). The DC output of the DC power source... Agent: Stephen A Schneeberger

20100188870 - Charge mode control: An apparatus and a method for converting power from a power input to an DC output voltage or current, which apparatus has a serial resonance converter, where a first feedback circuit is connected from the output terminal to an error amplifier, where the apparatus further has a second feedback circuit... Agent: Roberts Mlotkowski Safran & Cole, P.C. Intellectual Property Department

20100188871 - Synchronous rectifier network unit circuit and method: A synchronous rectifier network unit and synchronous rectifying method. The synchronous rectifier network unit includes a first body diode to which a first current flows at a first time when the first current flows to a first coil, and a first transistor which is turned on after the first body... Agent: Okamoto & Benedicto, LLP

20100188872 - Isolated switching power supply device: An isolated switching power supply device includes a main transformer having a primary coil on a primary circuit side and a secondary coil on a secondary circuit side. On the primary circuit side are disposed an input smoothing capacitor, a switching control circuit, a high-side driver, a low-side power switch,... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20100188873 - Compensating on-time delay of switching transistor in switching power converters: A switch controller compensates the total on-time delay of the switch in a switching power converter. The intended on-time of the switching transistor for the present switching cycle is reduced by the time difference between the actual on-time and the intended on-time of the switching transistor in the previous switching... Agent: Fenwick & West LLP

20100188874 - Ac - dc converter: AC-DC converter is provided which comprises an auxiliary winding 8c in a transformer 8, a voltage detector 21 for detecting a voltage VN appearing on auxiliary winding 8c of transformer 8 by on-off operation of a main switching element 9 in a DC-DC converter 10 to produce an output signal... Agent: Faier & Faier P.C.

20100188875 - High voltage and frequency distributed power system: A switching power supply transmits power between a single front end including electromagnetic interference filtering and power factor correction circuits to an output end at a high voltage and high frequency from which any desired DC voltage or waveform may be readily and directly derived with high efficiency in order... Agent: Whitham, Curtis & Christofferson & Cook, P.C.

20100188876 - Controller for a power converter: A controller for a power converter and method of operating the same employable with a bridge rectifier having first and second synchronous rectifier switches. In one embodiment, the controller includes an amplifier configured to enable a turn-on delay for the first synchronous rectifier switch SR. The controller also includes a... Agent: Slater & Matsil, L.L.P.

07/22/2010 > patent applications in patent subcategories.

20100182803 - Resonant converter equipped with a phase shifting output circuit: A resonant converter equipped with a phase shifting output circuit includes a resonant circuit to receive input power and regulate to become at least one resonant power, a switch unit to switch an ON period for the input power to pass through the resonant circuit and a power transformation circuit... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100182804 - Switching circuit for primary-side regulated resonant power converters: The present invention provides a switching circuit to regulate an output voltage and a maximum output current at the primary side of a resonant power converter. The switching circuit includes a pair of switching devices and a controller. The controller is coupled to a transformer to sample a voltage signal... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100182805 - Switching power supply: A plurality of power supply circuits Z1′ are provided according to a load capacity. The power supply circuits Z1′ have sides connected in parallel on the side of a direct current input Vi and have sides connected in series on the sides of alternating current outputs Ao. A rectifying circuit... Agent: Hamre, Schumann, Mueller & Larson P.C.

20100182806 - Controller for a power converter: A controller for a power converter having a transformer T1 with a primary winding coupled to a power switch SW and a secondary winding coupled to a synchronous rectifier switch SR. In one embodiment, the controller includes a first controller configured to control a conductivity of the power switch SW,... Agent: Slater & Matsil, L.L.P.

20100182807 - Synchronous rectifier circuit capable of preventing flow-through current: A synchronous rectifier circuit (DC-DC converter) includes a CR integration circuit and a discharge circuit. The CR integration circuit outputs a voltage that varies at delayed timing as compared with a voltage induced in a secondary-side main winding. The discharge circuit discharges a gate voltage of a rectifier transistor as... Agent: Crowell & Moring LLP Intellectual Property Group

20100182808 - Switching power source device: A pseudo-resonant switching power source device is provided which comprises a primary winding 2a of a transformer 2 and a main MOS-FET 3 connected in series to a DC power source 1, a voltage-resonant capacitor 12 connected in parallel to main MOS-FET 3, a rectification smoother 4 connected to a... Agent: Faier & Faier P.C.

20100182809 - Apparatus, systems, and methods for controlling energy converting devices: In one aspect the invention relates to an electrical circuit for use with a generator having an output port, the circuit to modify one of an electric current or voltage from the generator. The circuit includes a rectifier to convert the alternating current from the generator to direct current, the... Agent: K&l Gates LLP

20100182810 - Alternating-current power supply device: An alternating-current power supply device includes: a direct-current power supply Vin; a transformer T1 having a primary winding P1 and a secondary winding S1; a switching element SW1 connected to the direct-current power supply through the primary winding of the transformer; an output circuit 2 that receives a voltage generated... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100182811 - Power converter: The present invention discloses a power converter with extremely low standby power consumption for converting an input AC power to an output DC power, comprising: a DC supply voltage generating unit, used for generating a DC supply voltage; a pulse width modulation controller, used for generating a pulse width modulation... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100182812 - Power converter: The present invention discloses a power converter with low standby power consumption, used to convert an AC input power to an output DC power, comprising: an EMI filter, coupled to the AC input power to filter the EMI; a TRIAC, coupled to the EMI filter to access the AC input... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100182813 - Pn diode, electric circuit device and power conversion device: In a SiC pn diode, the lifetime is controlled by electron beam irradiation of about 3×1013 cm−2 or more. As a result of the life time control, as shown by a current-voltage characteristic (K10) in FIG. 1, the current started to flow at about 32 V and the on-voltage at... Agent: Nixon & Vanderhye, PC

20100182814 - Bidirectional dc-dc converter: Provided is a bidirectional DC/DC converter which can control a boost voltage in a wide range. The DC/DC converter includes: three series circuits formed by a first to a sixth switch, each two of which are connected in series between a plus terminal and a minus terminal of a high... Agent: Nixon & Vanderhye, PC

07/15/2010 > patent applications in patent subcategories.

20100177536 - Dc-dc power supply apparatus method for improving dc-dc power supply apparatus: A Direct Current to Direct Current (DC-DC) power supply apparatus includes: a transformer; a transformer primary circuit; a transformer secondary circuit, which includes a rectifier circuit capable of transformation and configured to convert a square wave voltage output by the transformer into a DC output voltage; and a control unit,... Agent: Huawei/bhgl

20100177537 - Power supply circuit and power supply system: To provide a power supply circuit which can be applied worldwide without using a high withstand voltage switching element and can supply a load device with stable power. A charging section is arranged between a turn-off capacitor and a load coil. The charging section has the anode connected to the... Agent: Greenblum & Bernstein, P.L.C

20100177539 - Electrical appliance and power supply thereof: A power supply includes an adapter and a delay module. The adapter is operable to receive an input voltage and convert the input voltage into a first operation voltage to power a load controlled by a control unit. The adapter includes a filter capacitor configured to smooth the first operation... Agent: PCe Industry, Inc. Att. Steven Reiss

20100177538 - System and method for power supply testing: In one embodiment, a method of verifying a component coupled to an output of a power supply includes measuring a frequency response from a control input of the power supply to the output of the power supply. The method also includes comparing the frequency response to a predetermined metric based... Agent: Slater & Matsil LLP

20100177540 - Power conversion apparatus: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with... Agent: Leydig Voit & Mayer, Ltd

20100177542 - Power transistor chip with built-in start-up transistor and application circuiyt thereof: A power transistor chip with a built-in start-up transistor and an application circuit thereof provides a junction field effect transistor in association with a metal oxide semiconductor field effect transistor to act as a start-up circuit of an AC/DC voltage converter. The start-up circuit can be turned off after the... Agent: G. Link Co., Ltd.

20100177541 - Voltage-sourced hvdc system with modulation function: A voltage-sourced High-Voltage Direct Current (HVDC) apparatus, which converts 3-phase AC voltage from a 3-phase AC power source into high voltage DC through a rectifier including switching elements, is provided. In the apparatus, a rectifier controller receives detected 3-phase currents, apparent power, and active power and generates D and Q-axis... Agent: Martine Penilla & Gencarella, LLP

20100177543 - Power converter mounting assemblies: The present disclosure relates mounting assemblies for a vehicle DC-to-DC power converter. The mounting assemblies can include a bracket having a first end configured to be fastened to a DC-to-DC power converter housing and a second end configured to be fastened to a vehicle structural member. The mounting assemblies can... Agent: Kristy J. Downing, Esq.

07/08/2010 > patent applications in patent subcategories.

20100172156 - Offline synchronous rectifier circuit with turned-on arbiter and phase-lock for switching power converters: A synchronous rectifier circuit of a switching power converter is provided and includes first and second power transistors and first and second diodes connected to a transformer and an output of the power converter for rectifying. An arbiter circuit generates a lock signal to prevent the second power transistor from... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100172157 - Switching power supply device and switching power supply control circuit: The invention provides a switching power supply device which can detect a light load state on a pulse-by-pulse basis without worsening power efficiency. In a synchronous control circuit, for each timing of the turning-on of main switching elements, the delay time Tdif of the conduction timing of internal diodes Ds... Agent: Rossi, Kimms & Mcdowell LLP.

20100172158 - Switching power supply apparatus and primary side control circuit: A synchronous rectification type DC-DC converter equipped with a burst mode prevents backward flows of currents on the secondary side thereof. The DC-DC converter turns off a control signal of a switching element on the primary side when the load thereof becomes light, and includes a voltage converting transformer, a... Agent: Frishauf, Holtz, Goodman & Chick, PC

20100172159 - Multiple-output switching power supply unit: A multiple-output switching power supply unit includes: a voltage generating circuit Q1, Q2, T1a, 10a configured to generate a pulse voltage by intermittently interrupting a direct current power supply 1; a series resonance circuit including a current resonance capacitor Cri2, a primary winding P2 of a transformer T2, and a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100172160 - System and method for providing control for switch-mode power supply: System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first voltage and a second voltage, to process information associated with the... Agent: Jones Day

20100172161 - Systems and methods for common-mode voltage reduction in ac drives: Control systems, methods and power conversion systems are presented for controlling common mode voltages in AC motor loads driven by inverter PWM control using switching sequences with only active vectors where a first vector of each switching sequence differs by one phase switching state from a last vector of a... Agent: Rockwell Automation, Inc./fay

20100172162 - Systems and methods for common-mode voltage reduction in fully regenerative ac drives: Control systems, methods and fully regenerative power conversion systems are presented for mitigating common mode voltages in AC loads by employing inverter and/or active rectifier PWM control using switching sequences with only active vectors where a first vector of each switching sequence differs by one phase switching state from a... Agent: Rockwell Automation, Inc./fay

20100172163 - High voltage protection for a thin oxide cmos device: A circuit includes a voltage regulator (208) for outputting a voltage at a regulated level, a protection circuit (260), and a load circuit (210) coupled to the voltage regulator. The protection circuit includes means for preventing the voltage regulator from outputting a voltage at a level higher than the regulated... Agent: Fleit, Gibbons, Gutman, Bongini & Bianco P.l

20100172164 - Ac adapter and the control method thereof: An AC adapter including an AC-side plug module and a DC-side connector module coupled to each other is provided. A first voltage-reducing element and a relay are electrically coupled to an AC power supply. An AC-to-DC converter is electrically coupled to the relay. The DC-side connector module has a mechanical... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100172165 - Current controlled shunt regulator:

20100172167 - Method and apparatus of an improvement in pwm switching patterns: An improvement in PWM switching patterns applicable for almost all voltage source converters is disclosed. Conventional PWM switching patterns, including carrier based PWM, spacer vector PWM, hysteretic switching pattern, etc, contain a lot of unnecessary switching events. In the present invention, most of the unnecessary switching events are eliminated. The... Agent: Yang Ye

20100172166 - Plug-in neutral regulator for 3-phase 4-wire inverter/converter system: A neutral line regulator is designed as a plug-in module or new integrated inverter with a lower rating 4th-leg, instead of using a conventional four-leg inverter to supply power to three-phase four-wire unbalanced AC loads or three-phase nonlinear loads without a neutral connection. The neutral line regulator may be designed... Agent: Honeywell/shimokaji Patent Services

20100172168 - Power system: The specification discloses a wireless power charging system in which undesired frequencies in the primary coil are cancelled. Exemplary undesired frequencies are the harmonics of the primary coil drive signal. The system includes a sense transformer/coil, an injection transformer/coil, and a compensation signal generator. The sense transformer/coil senses the signal... Agent: Warner, Norcross & Judd In Re: Alticor Inc.

07/01/2010 > patent applications in patent subcategories.

20100165664 - Gate driving circuit: A primary circuit turns on switching elements and generates energy from a direct-current power supply to a secondary circuit through a transformer. The secondary circuit charges a driven element using the energy obtained from the primary circuit through the transformer, turns on a switching element, discharges the energy accumulated in... Agent: Oliff & Berridge, PLC

20100165665 - Power supply control circuit and method for sensing voltage in the power supply control circuit: The present invention discloses a power supply control circuit, the power supply providing an output voltage to an output terminal from an input terminal through a transformer having a primary winding and a secondary winding, the power supply control circuit comprising: a power switch electrically connected with the primary winding;... Agent: Tung & Associates Suite 120

20100165667 - Power system with power converters having an adaptive controller: A power system having a power converter with an adaptive controller. The power system is coupled to a load and includes a power system controller that receives a signal indicating a system operational state of the load and selects a power converter operational state as a function thereof. The power... Agent: Glenn W. Boisbrun Slater & Matsil, L.L.P.

20100165666 - Primary-side feedback control device and related method for a power converter: A primary-side feedback control device for a power converter includes a control unit for generating a pulse signal according to a feedback signal for controlling on and off states of a switching transistor of the power converter, a comparator coupled to an auxiliary winding of a primary side of the... Agent: North America Intellectual Property Corporation

20100165668 - High efficiency universal input switching power supply: A universal input switching power supply has the rectifier, a signal detecting unit detecting a voltage of an external AC power and outputting a detecting signal, a PFC circuit converts a first DC power from the rectifier to a second DC power with different voltage according to the detecting signal;... Agent: Patenttm.us

20100165669 - Single-stage isolated high power factor ac/dc converter with leakage inductor energy recovery function: A single-stage isolated high power factor AC/DC converter with a leakage inductor energy recovery function includes a buck-boost circuit, for step-down or step-down a power supply; a transformer, electrically connected to the buck-boost circuit, for transforming the stepped-down or stepped-up power supply; a switch, electrically connected to the buck-boost circuit;... Agent: Morris Manning Martin LLP

20100165670 - Multi-output synchronous flyback converter: The present application concerns a multi-output synchronous Flyback converter. The Flyback converter comprises a primary controlled switch (24), a driver circuit (26), a transformer and a feedback circuit (27). The secondary side of the converter comprises a plurality of secondary windings (29, 30, 31), a plurality of controlled rectifiers (32,... Agent: Stetina Brunda Garred & Brucker

20100165671 - Switched-mode power supplies: This disclosure relates to switched-mode power supplies, to transformers for such power supplies, and to methods of operating switched-mode power supplies. A switch mode power supply (SMPS), the switched-mode power supply having a power input, a switch, a transformer, and a power output; said transformer having a primary winding on... Agent: Clise, Billion & Cyr, P.A.

20100165672 - Valley-mode switching schemes for switching power converters: An improved valley-mode switching (VMS) scheme and circuitry for implementing the improved VMS switching scheme in a switch-mode power converter are disclosed. For a given switching cycle, a desired switch turn-on time is determined based on a pulse width modulation, pulse frequency modulation, or other suitable power converter control scheme.... Agent: Fenwick & West LLP

20100165673 - Power supply having a two-way dc to dc converter: A power supply having a two-way DC to DC converter has an AC to DC converter and a two-way DC to DC converter. When an AC power is input to the AC to DC converter, the AC to DC converter transforms the AC power to a middle level DC power... Agent: Charles E. Baxley, Esquire

20100165674 - Power conversion systems and methods for controlling harmonic distortion: Control systems, methods and power conversion systems are presented for controlling harmonic distortion, in which multi-sampling space vector modulation (SVM) is employed for controlling power converter switching devices, with a reference vector being sampled two or more times during each SVM period to update the SVM dwell times more than... Agent: Rockwell Automation, Inc./fay

20100165675 - System and method for controlling variations of switching frequency: System and method for providing frequency control to a power converter. The system includes a pseudorandom signal generator configured to generate a digital signal. The digital signal is associated with at least an N-bit datum, and N is a positive integer. Additionally, the system includes a digital-to-analog converter configured to... Agent: Jones Day

20100165676 - System and method providing over current and over power protection for power converter: System and method for protecting a power converter. A system includes a threshold generator configured to generate a threshold signal, and a first comparator configured to receive the threshold signal and a first signal and to generate a comparison signal. The first signal is associated with an input current for... Agent: Jones Day

20100165677 - Electronic device having a circuit protection unit: An electronic device includes a circuit protection unit providing over-current protection to a main circuit and including a series connection of first and second current limiting circuits, and a normally-open branch circuit coupled in parallel to the first current limiting circuit and operable to conduct when a voltage across the... Agent: Townsend And Townsend And Crew, LLP

20100165678 - System for converting at least one electrical input direct current into an electrical polyphase output alternating current: This system comprises N×M second electromagnetic coupling coils, each being connected to a respective first coil and wound around a distinct core from that of the respective first coil. The first and second coils of a same core correspond to a single phase, and generate respective common mode fluxes of... Agent: Davidson, Davidson & Kappel, LLC

20100165679 - High efficiency universal input switching power supply: A universal input switching power supply has a signal detecting unit, two DC converting units and a physical wiring and controlling unit. The DC converting units are respectively adapted to couple to an AC power source to convert the AC power source to two first DC power sources and changes... Agent: Cooper & Dunham, LLP

20100165680 - Power conversion apparatus: An inverter module has a first inverter driving a first electric load and a second inverter driving a second electric load, mounted on a common insulation substrate. In the first inverter, the arms of the U, V and W phases are arranged on the insulation substrate such that arms adjacent... Agent: Sughrue Mion, PLLC

20100165681 - Semiconductor device and power converter using the same: In a driving circuit, for controlling the turning on and off of a main semiconductor switching device of an insulated gate type, in an insulated gate semiconductor switching device for electric power conversion, bipolar semiconductor devices of an insulated gate control type, particularly insulated gate bipolar transistors (IGBTs) are used... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100165682 - Current controlled power converter: A power module that converts a dc voltage into a three-phase ac voltage, current sensors that detect the ac side current of the power module, a shunt resistor and an amplifier that detect a dc side current of the power module, and a control section that controls the power module... Agent: GlobalIPCounselors, LLP

20100165683 - Switching power supply circuit: A switching power supply circuit that obtains a predetermined DC voltage output from an input AC power supply includes a full-wave rectifier and a boost circuit connected to the rectifier. The boost circuit generates a DC output having a predetermined voltage value from the rectifier output. A power factor improving... Agent: Rabin & Berdo, PC

20100165684 - Power adapter: A power adapter to receive at least one AC input power and transform to DC primary output power includes a power factor correction circuit to receive the AC input power and modulate to become a modulated power, an isolation voltage step-down circuit connecting to the power factor correction circuit to... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100165685 - Power transistor chip with built-in junction field effect transistor and application circuit thereof: A power transistor chip and an application circuit thereof has a junction field effect transistor to act as a start-up circuit of an AC/DC voltage converter. The start-up circuit can be turned off after the PWM circuit of the AC/DC voltage converter operates normally to conserve the consumption of the... Agent: G. Link Co., Ltd.

20100165686 - Rectifier circuit: A rectifier circuit for use in an energy harvesting application in which mechanical energy is converted into electrical energy by using an AC generator using an active rectifier bridge with a pair of input terminals adapted to be connected to an output of the AC generator and a pair of... Agent: Texas Instruments Incorporated

20100165687 - Output inverter for single phase and output current detecting method thereof: There are provided an output inverter for single phase which can detect a current with high precision through a smaller number of components, and an output current detecting method thereof. A first current detector (6) is disposed between a positive electrode P side of a DC power supply and a... Agent: Sughrue-265550

20100165688 - Cascaded flying capacitor modular high voltage inverters: A high voltage inverter is provided which includes a plurality of k-level flying capacitor H bridge modules, k being greater than 2, each having a positive dc terminal, a negative dc terminal, and two ac terminals, a connecting unit for connecting said ac terminals of said plurality of k-level flying... Agent: Sonnenschein Nath & Rosenthal LLP

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