Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems May archived by USPTO category 05/10

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.
05/27/2010 > patent applications in patent subcategories. archived by USPTO category

20100128498 - Switch mode pulse width modulated dc-dc converter with multiple power transformers: A switch mode pulse width modulated DC-DC power converter comprises at least one first electronic circuit on a input side (1) and a second electronic circuit on a output side (2). The input side (1) and the output side (2) are coupled via at least two power transformers (T1, T2).... Agent: The Nath Law Group

20100128499 - Step-down voltage converter: A step-down voltage converter (100) for generating an output voltage (VOUT) from an input voltage (VIN) is provided. The converter (100) includes a switch (111) having a first terminal (112) and a second terminal (114), wherein the second terminal (114) is electrically coupled with the output voltage (VOUT). Also included... Agent: The Ollila Law Group LLC

20100128500 - Switching power conversion circuit: A switching power conversion circuit includes a power circuit, a feedback circuit and a control circuit. The power circuit includes a switching circuit and a first magnetic element. The first magnetic element generates a magnetic flux change by alternately conducting or shutting off the switching circuit, so that an input... Agent: Kirton And Mcconkie

20100128501 - Systems and methods for constant voltage mode and constant current mode in flyback power converter with primary-side sensing and regulation: System and method for regulating a power converter. The system includes a first signal generator configured to receive at least an input signal and generate at least a first output signal associated with demagnetization and a second output signal associated with sampling. Additionally, the system includes a sampling component configured... Agent: Jones Day

20100128502 - Electric power conversion apparatus: A power converter includes: a converter (1) which rectifies an AC power; capacitor series assemblies (2A, 2B) connected to the DC side of the converter; an inverter (3) which assumes that one end of the capacitor series assemblies is at a high potential, the other end is at a low... Agent: Buchanan, Ingersoll & Rooney PC

20100128504 - Multi-channel switching-mode power supply, and image forming apparatus and electronic device having the multi-channel switching-mode power supply: A multi-channel switching-mode power supply (SMPS), an image forming apparatus and an electronic device having the multi-channel SMPS, the multi-channel SMPS including a first converter to rectify, switch, and transform AC power to generate a first DC power; a second converter to rectify, switch, and transform the AC power to... Agent: Stanzione & Kim, LLP

20100128503 - Switch-mode power supply: Disclosed is a Power Factor Correction Controller, which comprises a boost converter, a current sensing unit, an arithmetic unit, and a switch driving unit. The current sensing unit can sense or derive the current that pass through the energy delivery device, which is normally implemented by a diode or a... Agent: Volpe And Koenig, P.C.

20100128505 - Current measurement in an inverter unit and a frequency converter: A method and an arrangement of measuring inverter current, where the inverter is connected to and supplied by a DC intermediate circuit having two or more parallel capacitor branches connected between the positive and negative rail of the DC intermediate circuit, and the capacitance of the capacitor branches being known.... Agent: Buchanan, Ingersoll & Rooney PC

05/20/2010 > patent applications in patent subcategories. archived by USPTO category

20100124078 - Electronic device and power supply thereof: A power supply includes a first convertor, a second convertor, and a transformer. The first convertor generates an alternating current (AC) voltage. The transformer includes a primary winding and a secondary winding. The primary winding is connected to the first convertor and receives the AC voltage. The secondary winding includes... Agent: PCe Industry, Inc. Att. Steven Reiss

20100124079 - Offline synchronous rectifier with causal circuit for resonant switching power converter: A synchronous rectifier of a resonant switching power converter is provided to improve efficiency. The synchronous rectifier includes a power transistor and a diode connected to a transformer and an output of the resonant switching power converter for ratifications. A controller generates a drive signal to control the power transistor... Agent: Jianq Chyun Intellectual Property Office

20100124080 - Current control method and apparatus: Current control method and apparatus are disclosed. A current limiter is coupled to a switch connected in series with an energy transfer element of a power supply. The current limiter detects a current flowing through the switch and, when the current exceeds a current limit signal, turns off the switch.... Agent: North America Intellectual Property Corporation

20100124081 - Switching power supply: According to the present invention, when a secondary current on period T2on reaches a predetermined maximum secondary current on-period, an overload is detected and an output power is controlled to decrease. Further, a maximum secondary current on-period signal is set so as to correspond to a secondary current on-period when... Agent: Hamre, Schumann, Mueller & Larson P.C.

20100124082 - Method for selecting the optimum number of phases for converter and system using the same: A method for selecting the optimum number of phases for a converter is provided, which selects a duty range using an input voltage and an output voltage, obtains ripple values for multiple phases in the duty range, and selects the optimum number of phases using the corresponding ripple values. The... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100124083 - 3-phase power factor corrected ac to dc filtered switching power supply: This invention relates to a power supply apparatus and method for converting three-phase delta AC power to DC power using EMI filters and PFC circuits to maintain balanced AC current loading and reduce radiated and conducted emissions. Overcurrent and temperature protection are also provided in conjunction with a novel optocoupler... Agent: HowardIPLaw Group

20100124084 - Power converter with control circuit and related control method: A control circuit for use in a power converter has a multi-function terminal, a current comparator circuit, and an under-voltage detection circuit. The current comparator circuit compares current flowing through a power switch of the power converter with a reference value through the multi-function terminal when the power switch is... Agent: North America Intellectual Property Corporation

20100124085 - H-bridge circuit having energy compensation circuit and controlling method thereof: The configurations of an H-bridge circuit and a controlling method thereof are provided in the present invention. The proposed circuit includes an H-bridge having a first and a second bridge arms, each of which has a middle point, and a bidirectional switch connected to the two middle points, a bootstrap... Agent: Volpe And Koenig, P.C.

20100124086 - High efficiency synchronous reectifiers: Methods and circuits for synchronous rectifier control are disclosed herein. In one embodiment, a synchronous rectifier control circuit can include: (i) a first sense circuit to sense a voltage between first and second power terminals of a synchronous rectifier device prior to a turn-on of the device, where a timing... Agent: Michael C. Stephens, Jr.

20100124087 - Power converter start-up circuit: A power converter arrangement configured to convert a direct voltage into an alternating voltage to be supplied to a grid includes a photovoltaic generator configured to generate the direct voltage, a voltage intermediate circuit, a main power converter connected in series with a bypass switch, a maximum power point controller... Agent: Darby & Darby P.C.

05/13/2010 > patent applications in patent subcategories. archived by USPTO category

20100118565 - Method of forming a series resonant switching power supply control circuit and structure therefor: In one embodiment, a control circuit for a series resonant switching power supply control system is configured to disable a power switch of secondary side of the system in response to a polarity reversal of the voltage across a primary side winding of the system.... Agent: Semiconductor Components Industries, LLC Intellectual Property Dept. - A700

20100118566 - Multi-voltage power supply: A multi-voltage power supply includes a transformer, a first output circuit to generate a first output voltage using a voltage transferred to a secondary winding of the transformer, and a first output voltage controller to control a voltage supplied to the primary winding of the transformer according to the first... Agent: Stanzione & Kim, LLP

20100118567 - Power supply adjusting apparatus: A power supply adjusting apparatus includes a primary isolation converting unit, adapted to convert voltage or current of an input power supply signal and output a power supply signal that meets an expected voltage or current requirement. The power supply adjusting apparatus also includes a voltage adjustment controlling unit, adapted... Agent: Huawei/bhgl

20100118568 - Low-voltage harmonic filter for full-scale converter systems: The present invention relates to a wind turbine facility comprising a power generator operationally connected to an AC/AC converter adapted to receive variable frequency AC-power from the power generator, and adapted to generate substantially fixed frequency AC-power. The wind turbine facility further comprises a harmonic filter system, and a grid... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20100118569 - Power conversion system: A power conversion system includes a first power converter converting AC to DC, a second power converter converting DC to AC, a current detector detecting output current of the second power converter, a pulsation detector detecting a pulsating component associated with the AC to DC conversion of the first power... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100118570 - Matrix converter: A matrix converter includes a matrix converter main circuit, an input voltage detector group configured to detect an input voltage of an alternating current source, a gate driver configured to drive a bidirectional switch, and a controller having a pulse width modulation operation unit and a commutation operation unit. The... Agent: Ditthavong Mori & Steiner, P.C.

20100118571 - Method and apparatus to control a power factor correction circuit: A controller for use in a power factor correction (PFC) converter is disclosed. An example controller includes an integrator coupled to receive a voltage sense signal responsive to a magnitude of an ac voltage source. The ac voltage source is coupled to an input of the PFC converter, which is... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100118572 - Led driver with low harmonic distortion of input ac current and methods of controlling the same: A power supply circuit for powering a load at constant current has a rectifier stage for receiving an AC voltage input and for producing a first substantially DC voltage. A first capacitor is attached to the load. A charge-pump is attached to an output of the rectifier stage and to... Agent: Weiss & Moy PC

20100118574 - Dc bus regulator: An improved DC bus regulator that utilizes more transistor packs for power conversion at some times and diode, SCR, and resistor packs at other times. The conversion technology is selected by the regulator based on the current load capacity and response required. For example, transistor packs may be used in... Agent: Fulbright & Jaworski, LLP

20100118573 - Method and apparatus to increase efficiency in a power factor correction circuit: A controller for use in a power factor correction (PFC) converter includes a power factor correction controller circuit coupled to output a drive signal to switch a power switch between an on state and an off state to transfer energy to an output of the PFC converter. The controller also... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100118576 - Power factor correction circuit: A power factor correction circuit includes a rectifier 3 to rectify an AC voltage of an AC power source 1, a first series circuit connected in parallel with an output of the rectifier and having a step-up reactor L1 and a switching element Q0 that are connected in series, a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100118575 - Power inverter: A current inverter including a bridge circuit with four switch elements is provided. Two opposite connector clamps of the bridge circuit are connected to a direct current part of the current inverter, and further two connector clamps of the bridge circuit are connected to an alternating current part of the... Agent: Siemens Corporation Intellectual Property Department

20100118577 - Sine wave lamp controller with active switch commutation and anti-flicker correction: A pulse width modulated half bridge dimming controller for dimming a lighting ballast is described. The top half of the bridge is comprised of two switches, the top switch set, and the bottom half of the bridge is comprised of two switches, the bottom switch set. Each switch also has... Agent: Rudoler & Derosa LLC Attn: Docket Clerk

20100118578 - Device for converting an electric current: A device for converting an electrical current includes at least one phase module with an AC voltage connection and at least one DC voltage connection, a phase module branch disposed between each DC voltage connection and the AC voltage connection and each phase module branch having a series circuit of... Agent: Lerner Greenberg Stemer LLP

05/06/2010 > patent applications in patent subcategories. archived by USPTO category

20100110730 - Power device: A power device transforms input power into power for output, and includes an input unit, a power factor unit, an output unit, a power saving unit, and a control signal port. The power saving unit includes a first electronic switch, a first diode and a single-direction switch. The first electronic... Agent: PCe Industry, Inc. Att. Steven Reiss

20100110731 - Uninterruptible power supply: An uninterruptible power supply is able to switch an operation mode between an on-line operation method and an off-line operation method for a wider range of commercial power supplies. An uninterruptible power supply 1 includes; a rectifier 11 for converting AC power supplied from a commercial power source 2 into... Agent: Von Simson & Chin

20100110732 - Tail current control of isolated converter and apparatus thereof: An inventive isolated converter which exempts the auxiliary isolation devices with accurate voltage regulation is disclosed. The converter includes the primary side circuit with a primary controller controlling the on and off of the primary switch and a secondary side circuit with a secondary controller controlling the on and off... Agent: Perkins Coie LLP Patent-sea

20100110733 - Self-coupled driver used in dual-switch forward power converter: A dual-switch forward power converter, and a method of operating the same, employs a self-coupled driver to achieve among other advantages higher efficiency, lower part count and component cost. In one aspect of the present invention, a power converter comprises a transformer and two switching transistors, and said transformer has... Agent: Lawrence Y.d. Ho & Associates Pte Ltd

20100110734 - Circuit for output current detect, circuit for output current feedback, and smps which limits output current by primary side feedback: A discontinuous mode flyback converter for limiting output current using primary feedback is disclosed. A transformer stores magnetic energy using field current and transfers the magnetic energy using a primary winding and a secondary winding closely coupled to the primary winding. A switching element is coupled to one end of... Agent: Caesar, Rivise, Bernstein, Cohen & Pokotilow, Ltd.

20100110735 - Power adapter with voltage-stabilized compensation: A power adapter with voltage-stabilized compensation includes a pulse frequency modulation circuit to generate a driving pulse which has a variable OFF time interval to control power transformed and output by a transformer. The power adapter also has an ancillary coil to induce a feedback signal on the secondary coil... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100110736 - Dynamic compensation for a pre-regulated charge pump: An apparatus is provided. The apparatus comprises an error amplifier that amplifies the difference between a reference voltage and a feedback voltage, a first variable impedance circuit coupled to the error amplifier that receives a control voltage from the error amplifier, a charge pump coupled to the variable impedance that... Agent: Texas Instruments Incorporated

20100110737 - Multi-output power supply: A multi-output power supply includes a standby power system and a main power system. The main power system has a transformer and a rectification output circuit connecting to the transformer to generate first output power. The power supply further has an output time series judgment circuit and a plurality of... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100110739 - Control system of a power factor correction circuit: A control system for a power factor correction circuit performs stabilized oscillation operation and suppresses switching frequency variation due to change of the AC power source. A control system includes a voltage error amplifier for outputting a voltage error signal obtained by amplifying a difference between a DC output voltage... Agent: Rabin & Berdo, PC

20100110738 - Switching power supply apparatus: In a switching power supply apparatus, multiplier 9 multiplies error voltage Verr generated in voltage error amplifier 8 and input voltage Vin to generate first threshold signal Vth1 in-phase with and similar to input voltage Vin and having an amplitude proportional to error voltage Verr. Second threshold signal generator circuit... Agent: Rabin & Berdo, PC

20100110740 - Pwm power regulator device: A PWM power regulator device has a processor, an input interface circuit, a zero phase detecting circuit and a thyristor. The input interface circuit is connected to a PWM output terminal of an external digital control circuit and the processor. The processor calculates a period and duty cycle of a... Agent: Cooper & Dunham, LLP

20100110741 - Miniature high voltage/current ac switch using low voltage single supply control: Embodiments of the invention pertain to a method and apparatus for planar wireless power transfer where the receiver switches off and/or performs a duty cycle. In an embodiment, the switch can be used in a system that having a high voltage/current solid state switch, without having a high voltage control... Agent: Saliwanchik Lloyd & Saliwanchik A Professional Association

20100110742 - Bipolar dc to ac power converter with dc ground fault interrupt: An electrical power converter for converting power from a bipolar DC source to supply an AC load is disclosed. For one such embodiment the bipolar DC source is a photovoltaic array and the AC power is sourced into an electric power grid. The bipolar photovoltaic array has positive and negative... Agent: Nixon Peabody LLP

20100110743 - Inverter controller: To suppress an unbalance of a dwell period in a changeover of phases in which switching is dwelled in an inverter controller. A PWM operation unit 5 includes a modulation-wave generating unit 11 that generates a modulation wave as a voltage command value to an inverter main circuit 2, a... Agent: Buchanan, Ingersoll & Rooney PC

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