Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems January recently filed with US Patent Office 01/09

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.
01/29/2009 > patent applications in patent subcategories.

20090027922 - Power adapter: A power adapter comprises a converter module having circuitry for converting an alternating current (AC) power supply to a direct current (DC) power supply, a connector couplable to an electronic device for supplying the DC power supply to the electronic device, and a switch manually actuatable to control power consumption... Agent: Hewlett Packard Company

20090027923 - Power supply device and power supply control method: A power supply device includes input terminals, output terminals, a main transformer having a primary winding and secondary windings, a primary circuit connected between the input terminals and the primary winding of the main transformer, a secondary circuit connected between the secondary windings of the main transformer 5 and the... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090027924 - Feedback control device: A feedback control device is provided. The feedback control device includes a controlled-system which outputs and output in correspondence with a control signal; a feedback signal generating member which generates a feedback signal as the output of the controlled-system; a reference signal unit which outputs a reference control signal to... Agent: Banner & Witcoff, Ltd. Attorneys For Client No. 016689

20090027925 - Switching power supply: A buck-boost converter of an H bridge type having a function for initially charging a smoothing output capacitor without a relay and a rush current preventing resistance. A compact and flat power supply is attained by employing a current critical mode H bridge system for a PFC converter and providing... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090027926 - Method and apparatus to provide synchronous rectifying circuit for flyback power converters: A synchronous rectifying circuit is provided for flyback power converter. A pulse generator is utilized to generate a pulse signal in response to a leading edge and a trailing edge of a switching signal. The switching signal is used for switching the transformer of the power converter. An isolation device... Agent: J C Patents, Inc.

20090027927 - Switch mode power supply: A switch mode power supply according to the invention that can improve the reliability thereof includes a series circuit connected between the positive and negative electrodes of a DC power supply 3, the series circuit including a capacitor 4, a main switching device 1, and a subsidiary switching device 2;... Agent: Rabin & Berdo, PC

20090027928 - Step up converter with overcurrent protection: A step up converter with overcurrent protection is disclosed. The step up converter can precisely limit the output current of the upstream device. Current from the input terminal of the converter is detected and compared with a predetermined maximum current to get a comparison value which is delivered to a... Agent: Perkins Coie LLP Patent-sea

20090027929 - Power supply circuit of image display apparatus: A power supply circuit of an image display apparatus is provided. The power supply circuit uses a single DC-DC converter, and is capable of supplying low voltage when the image display apparatus is in standby mode, and supplying high voltage as required when the image display apparatus is in operating... Agent: Sughrue Mion, PLLC

20090027930 - Ac-dc converter: An AC-DC converter includes a rectifier DB for rectifying an alternating current supplied from an alternating power source AC, a power factor controller 11 connected to an output side of the rectifier DB to improve a power factor, a DC-DC converter 12 that converts a voltage outputted from the power... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090027931 - Ac-dc converter: An AC-DC converter includes a rectifier DB for rectifying an alternating current supplied from an alternating power source AC, a power factor controller 11a connected to an output side of the rectifier DB to improve a power factor and also output either a power or a current limited to a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090027932 - Alternative-source energy management: A power converter system includes a power converter system including: a DC-to-AC power converter; a first output configured to be coupled to a power grid; a first input configured to be coupled to the power grid; second outputs each configured to be coupled to a corresponding AC load; a power-grid... Agent: Townsend And Townsend And Crew, LLP

20090027933 - Voltage link control of a dc-ac boost converter system: Systems and methods are disclosed for a DC boost converter. The systems and methods combine operation of an inductor with the input capacitor of a DC/AC inverter via a switch configuration to power the DC/AC inverter. The switch configuration is controlled by a plurality of control signals generated by a... Agent: General Motors Corporation Legal Staff

20090027934 - Electric transformer-rectifier: An electric transformer-rectifier is provided such that electrical current is supplied from a three phase alternating current supply. The device includes a tri-phase transformer, where each secondary winding has its terminals available to connect to their respective secondary windings. Power is supplied to a set of three boost converters, which... Agent: Husch Blackwell Sanders, LLP Husch Blackwell Sanders LLP Welsh & Katz

20090027935 - Polyphase inverter, control method thereof, air sending device and polyphase current output system: Capacitors act as bootstrap capacitors of a high side control circuits. The capacitors are charged in a period in which all of high arm switching devices are non-conductive, so-called in a precharge period. When any of U-phase current, V-phase current and W-phase current is smaller than a negative predetermined value... Agent: Birch Stewart Kolasch & Birch

20090027936 - Rf power supply: An RF power supply, in particular a plasma supply device, for generating an output power greater than 500 W at an output frequency of at least 3 MHz includes at least one inverter connectable to a DC power supply, which inverter comprises at least one switching element and an output... Agent: Fish & Richardson PC

20090027937 - High frequency power supply: A high frequency power supply, in particular a plasma supply device, for generating an output power greater than 1 kW at a basic frequency of at least 3 MHz with at least one switch bridge, which has two series connected switching elements, wherein one of the switching elements is connected... Agent: Fish & Richardson PC

01/22/2009 > patent applications in patent subcategories.

20090021962 - Systems and methods for off-time control in a voltage converter: Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer with a first winding and a second winding. A voltage is applied to the first winding for a period that is followed by an... Agent: Texas Instruments Incorporated

20090021963 - Uninterruptible power supply, connected to a grid: The present invention relates to an Uninterruptible Power Supply and a method for operating an Uninterruptible Power Supply, where the UPS is connected between a grid and a consumer, where the UPS is rectifying the power from the grid for generating DC, which DC is used as source for an... Agent: Ladas & Parry LLP

20090021964 - Modularized active power filter: A modularized active power filter includes a control module and at least one power module. The control module automatically identifies the number of the parallel connected power modules and generates one set of PWM signals to correspondingly control the parallel connected power modules, so as to provide a final compensation... Agent: Kamrath & Associates P.a.

20090021965 - Electronic device capable of supplying power bi-directionally through port and method of operating the same: An electronic device having a main body with a system load and capable of supplying power bi-directionally through a port, and an operation method thereof, the electronic device including: a power control apparatus to recognize a connection of an external power source for supplying power to the system load, and... Agent: Stein, Mcewen & Bui, LLP

20090021966 - Methods and apparatus for a cascade converter using series resonant cells with zero voltage switching: A method of providing power to a load is provided. A first series resonant converter is provided. A second SRC is operably coupled to the first SRC in a cascade connected arrangement. First and second zero voltage switching (ZVS)-assistance networks are operably coupled between the first SRC and the second... Agent: Raytheon Company C/o Daly, Crowley, Mofford & Durkee, LLP

20090021967 - Method for controlling a generation of an alternating current in a vehicle: In a method for controlling a generation of an alternating current in a vehicle equipped with a battery and an inverter, the inverter is electrically connectable to the battery in order to generate an alternating current from a direct current of the battery for electrical devices that are electrically connectable... Agent: Kenyon & Kenyon LLP

20090021969 - Appliance and power supply therefor: A power supply having an input, a rectifier, a voltage dropping resistor coupled in the circuit to provide a voltage drop between the input and an output of the power supply, a smoothing circuit having at least two capacitors to stabilise the output voltage, whereby a switching network switches the... Agent: Trexler, Bushnell, Giangiorgi, Blackstone & Marr, Ltd.

20090021968 - Switching power supply apparatus and power supply control semiconductor integrated circuit: Disclosed a switching power supply apparatus which includes a voltage converting transformer including an auxiliary winding on a primary side and a switching control circuit, wherein the switching control circuit includes a detection circuit to detect a falling edge of a terminal voltage of the auxiliary winding, and controls a... Agent: Frishauf, Holtz, Goodman & Chick, Pc

20090021970 - Dc-ac converter, controller ic therefor, and electronic apparatus utilizing the dc-ac converter: An inverter controls the power supplied to a load such as a CCFL connected to a secondary winding of a transformer by means of pulse width modulation (PWM) control of the switches of a semiconductor switching circuit connected to the primary winding of the transformer. The current and voltage supplied... Agent: Rohm Co., Ltd. C/o Keating & Bennett, LLP

20090021971 - Vehicle inverter assembly with cooling channels: An inverter assembly for a vehicle includes a housing, a first inverter, and a second inverter. The housing comprises a plurality of walls. The plurality of walls form an inlet for cooling fluid to enter the housing, an outlet for the cooling fluid to exit the housing, and a channel,... Agent: Ingrassia Fisher & Lorenz, P.c. (gm)

01/15/2009 > patent applications in patent subcategories.

20090016083 - Secondary side synchronous rectifier for resonant converter: A resonant converter including a primary side switching stage having high- and low-side switches series connected at a switching node and controlled by a primary side controller; a transformer having a primary coil and a secondary coil, the secondary coil having at least one pair of portions series connected at... Agent: Ostrolenk Faber Gerb & Soffen

20090016082 - Systems and methods for frequency control of a voltage converter: Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer, an operational detector, and a controllable oscillator. The transformer includes a first winding and a second winding, and the operational detector provides an electrical... Agent: Texas Instruments Incorporated

20090016084 - Arrangement provided with a voltage converter for supplying voltage to an electrical load and associated method: An apparatus includes a voltage converter for supplying voltage to an electrical load. The voltage converter is electrically connected at an output to a terminal of a series circuit. The voltage converter includes mechanisms for connecting the electrical load and a current sink. The voltage supplied by the voltage converter... Agent: Fish & Richardson PC

20090016085 - Method and apparatus for a charge pump dc-to-dc converter having parallel operating modes: According to one or more aspects of DC-to-DC voltage conversion as taught herein, a DC-to-DC converter selectively operates in a first mode wherein an included linear pass output circuit supplies the output power from the DC-to-DC converter, in a second mode wherein an included charge pump output circuit supplies the... Agent: Coats & Bennett, PLLC

20090016086 - Secondary side constant voltage and constant current controller: A low-cost integrated circuit is used as a secondary side constant voltage and constant current controller. The integrated circuit has four terminals and two amplifier circuits. A first amplifier circuit is used to sense a voltage on a FB terminal and in response to cause a first current to flow... Agent: Imperium Patent Works

20090016087 - Switching power source: An error voltage Verr, as amplified by an amplifier, and an input voltage Vin, are multiplied together by a multiplier to generate a first threshold value signal Vth1, which is in phase with and similar in waveform to the input voltage Vin, and proportional in amplitude to the error voltage... Agent: Rabin & Berdo, PC

20090016089 - Electromechanical power transfer system with even phase number dynamoelectric machine and three level inverter: An electromechanical power transfer system that converts direct current (DC) electrical power to variable mechanical power, comprises: a source of DC that has a neutral ground, a positive potential output with a level of electrical potential that is positive relative to the neutral ground and a negative potential output with... Agent: Stephen George Mican

20090016088 - Semiconductor assembly: A semiconductor assembly is disclosed. One embodiment provides a first semiconductor and a second semiconductor, each having a first main connection and a second main connection arranged on opposite sides, and a carrier having a patterned metallization with a first section spaced apart from a second section. The first semiconductor... Agent: Dicke, Billig & Czaja

20090016090 - Synchronous rectifier and controller for inductive coupling: A synchronous rectifier is arranged to rectify inductively coupled power using FETs (field effect transistors) to minimize the voltage drop of the rectifier, which minimizes power loss. Power loss is an important consideration in applications where fairly significant power is coupled to a device (such as a battery charger or... Agent: Merchant & Gould PC

20090016091 - Circuit and system for ultrasonic power regulation: A circuit for power regulation of ultrasonic generators comprising a half bridge or full bridge circuit and a regulator circuit that controls or regulates the output power of the bridge circuit by, among other things, subtracting bridge voltage from the +VDC power supply. A full range of bridge circuit output... Agent: Phillips Lytle LLP Intellectual Property Group

01/08/2009 > patent applications in patent subcategories.

20090010027 - Switching power supply apparatus: A switching power supply apparatus which includes a DC power supply, an isolation transformer having primary, secondary and tertiary windings, and a switching element, and in which, by turning the switching element on and off, the high-frequency voltage appearing in the secondary windings of the isolation transformer is rectified to... Agent: Rossi, Kimms & Mcdowell LLP.

20090010028 - Inductive power supply, remote device powered by inductive power supply and method for operating same: An inductive power supply includes a transceiver for sending information between the remote device and the inductive power supply. The remote device determines the actual voltage and then sends a command to the inductive power supply to change the operating frequency if the actual voltage is different from the desired... Agent: Warner, Norcross & Judd In Re: Alticor Inc.

20090010029 - Power converter: An apparatus to convert a direct current to an alternating current includes a power module disposed between an input terminal of the direct current and output terminal of the alternating current, the power module comprising an on/off switch element, a first smoothing condenser connected in parallel with the power module,... Agent: Osha Liang L.L.P.

20090010030 - Power supply circuit with feedback circuit: An exemplary power supply circuit (200) includes a pulse width modulation circuit (220) providing a pulse signal, a voltage conversion circuit (210) converting a primary voltage to an output voltage according to the pulse signal, a feedback circuit (260), and a control circuit (290). The feedback circuit includes a sampling... Agent: Wei Te Chung Foxconn International, Inc.

20090010031 - Zero-voltage-switching electric converter: The zero-voltage-switching electric converter comprises a power source configured to provide DC current and having a first terminal and a second terminal, a switching circuit having a third terminal electrically connected to the first terminal of the power source and a fourth terminal, and a resonant load having a fifth... Agent: Wpat, PC Intellectual Property Attorneys

20090010032 - Power supply capable of reducing secondary-side noise: A switching power supply capable of reducing secondary-side noise mainly has at least one decoupling device for guiding the secondary-side noise to at least a terminal of an AC power supply. Thus, the secondary-side high-frequency noise can be reduced, and the quality in using the electronic apparatus product, which is... Agent: Weber Chuang

20090010033 - Active diode: An active diode is disclosed. One embodiment provides a method for operating a device. The electronic device includes a transistor connected between a first and a second connection of the electronic device; a control device coupled to a control connection of the transistor; and an energy storage device coupled to... Agent: Dicke, Billig & Czaja

20090010034 - Start signal detector circuit: A variation of a threshold of diode-connected transistors is compensated for to maintain a constant rectification efficiency of a rectifier circuit, thereby enabling stable detection of a start signal. A constant voltage is applied to DC bias terminal of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M1 to... Agent: Young & Thompson

20090010035 - Boost and up-down switching regulator with synchronous freewheeling mosfet: A freewheeling MOSFET is connected in parallel with the inductor in a switched DC/DC converter. When the freewheeling MOSFET is turned on during the switching operation of the converter, while the low-side and energy transfer MOSFETs are turned off, the inductor current circulates or “freewheels” through the freewheeling MOSFET. The... Agent: Patentability Associates

01/01/2009 > patent applications in patent subcategories.

20090003018 - Dc to dc conversion control system and method: A direct current to direct current (DC/DC) converter control systems and related methods are disclosed. An exemplary embodiment provides a control circuit configured to modulate the duty cycles of a first switching device and a second switching device, and is further configured to compensate for a voltage drift at a... Agent: Carr LLP

20090003019 - Synchronous rectification circuit for power converters: A synchronous rectification circuit for power converters operable under fixed and/or variable frequencies where no current sense circuit or phase-lock circuit are needed is provided. It has a power switch coupled to a transformer for the rectification. A signal-generation circuit is used for generating a control signal in response to... Agent: J C Patents, Inc.

20090003020 - Cross current control for power converter system: A system and method for controlling cross current in an interleaved power converter system having a plurality of converter threads coupled in parallel includes collecting a feedback current from each thread and obtaining a normal current and a differential mode current for each thread, based on its respective feedback current.... Agent: General Electric Company Global Research

20090003021 - Chopper type dc-dc converter: A chopper type DC-DC converter includes a voltage converting circuit, a comparative wave generating circuit, a comparator group, and a switch control circuit. The voltage converting circuit converts a first voltage into a second voltage. The comparative wave generating circuit generates first and second comparative waves such that the voltage... Agent: Sughrue Mion, PLLC

20090003022 - Non-contact power supply system: A non-contact power supply system is provided in which current phases of induction lines are matched. According to the output current of a power supply unit (21) and the power consumption of induction lines (19), a lead time corresponding to a phase difference between the output currents of the induction... Agent: Kusner & Jaffe Highland Place Suite 310

20090003023 - Method and system of controlling a power inverter: Methods and systems for controlling a power inverter are provided. In accordance with one embodiment, a system for converting a direct current into an alternating current may include a switching module, a sensing module, and a control module. The switching module may have an input and an output, and may... Agent: Baker Botts, LLP

20090003024 - Inverter: t

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