Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems April category listing, related patent applications 04/09

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.
04/30/2009 > patent applications in patent subcategories.

20090109709 - Switching power supply: The first choke coil and the third choke coil are not magnetically coupled to the second choke coil and the fourth choke coil. Therefore, even in a case where a structure for increasing the heat radiation area is adopted, a pair of the first and third choke coils and a... Agent: Oliff & Berridge, PLC

20090109710 - Switching power supply unit: A switching power supply unit is provided, in which circuit efficiency can be effectively improved compared with a usual case. Secondary windings of a transformer are configured of two sheet metals. Rectifier diodes in a rectifier circuit are connected between the two sheet metals. Inductance of a line between the... Agent: Oliff & Berridge, PLC

20090109711 - Three-pin integrated synchronous rectifier and a flyback synchronous rectifying circuit: A three-pin integrated synchronous rectifier is the synchronous rectifier chip where the quantity of connection pins is the smallest possible quantity. The three-pin integrated synchronous rectifier uses a control pin to receive a control signal used as a power bias voltage and a synchronous pulse to make the synchronous rectifier... Agent: Rosenberg, Klein & Lee

20090109712 - Capacitor based energy storage: An electrical storage device comprises a capacitor or capacitor bank capable of storing significant quantities of electricity. An inverter in circuit with the capacitor converts direct energy of the capacitor into alternating current. A variable ratio transformer is in circuit with the output of the inverter to produce an alternating... Agent: G. Turner Moller, Jr.

20090109713 - Variable speed drive: Systems and methods for improved Variable Speed Drives are provided. One embodiment relates to apparatus for common mode and differential mode filtering for motor or compressor bearing protection when operating with Variable Speed Drives, including conducted EMI/RFI input power mains mitigation. Another embodiment relates to a method to extend the... Agent: Mcnees Wallace & Nurick LLC

20090109714 - Power supply module adapted to power a control circuit of a switching mode power supply: A power supply module to power the control circuit of a switching mode power supply is provided. Based on the determination of whether the switching mode power supply is under a light or open load condition, the power supply module can dynamically provide the power to the control circuit of... Agent: Patterson, Thuente, Skaar & Christensen, P.A.

20090109715 - Synchronous rectifying for soft switching power converters: An synchronous rectifying apparatus or synchronous rectifying circuit of a soft switching power converter is provided to improve the efficiency. The integrated synchronous rectifying circuit includes: a power transistor connected from a transformer to the output of the power converter for rectifying; a controller having a latch circuit generates a... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090109716 - Method and apparatus for supplying and switching power: An exemplary embodiment of an apparatus for supplying and switching power may include a power source, a transformer, a full bridge rectifier and a control switch. The transformer has a first winding and a second winding, the first winding being connected to the power source, the second winding having a... Agent: Guy K. Clinger

20090109717 - Power factor corrected circuit having integrated coil: There is provided a power factor corrected circuit having an integrated coil in which a plurality of inductors that have been separately used for circuits are wound around one core. The power factor corrected circuit includes a rectifying unit for rectifying a common AC power supply; a coil unit for... Agent: Lowe Hauptman Ham & Berner, LLP

20090109718 - Integrated circuit including a controller for regulating a power supply: An integrated circuit includes a controller configured to regulate an output of a power supply based on a first signal. The integrated circuit includes an input configured to receive the first signal and to be coupled to an external capacitor that sets an adjustable blanking time for the power supply.... Agent: Dicke, Billig & Czaja

04/23/2009 > patent applications in patent subcategories.

20090103332 - Charging probe circuit: Various example embodiments are disclosed. According to one example embodiment, a charging probe may include an alternating current (AC) input configured to receive current from an AC source, a rectifier circuit configured to rectify the current received from the AC source, a primary coil, and a control circuit configured to... Agent: Brake Hughes Bellermann LLP

20090103333 - Circuit arrangement and method for converting an alternating voltage into a rectified voltage: A circuit arrangement for converting an alternating voltage (U-IN) into a rectified voltage (U-OUT) comprises a first transistor (40) whose first terminal (41) is coupled to an input terminal (1) of the circuit arrangement for feeding in the alternating voltage (U-IN), and whose second connection (42) is coupled to an... Agent: Fish & Richardson PC

20090103334 - Switching-type power-supply unit and a method of switching in power-supply unit: A switching-type power-supply which enables the switching with little power loss and a method of switching the switching-type power-supply are provided. The switching-type power-supply unit includes a transformer with primary, secondary, winding and control windings, a switch which switches supply of a primary current from a dotted terminal to a... Agent: Oliff & Berridge, PLC

20090103335 - Overcurrent-protected switching-mode power supply: A DC-to-DC converter having an active switch connected between a pair of DC input terminals via the primary winding of a transformer whose secondary winding is connected to a pair of DC output terminals via a rectifying and smoothing circuit. Operating under the control of an output voltage detector circuit,... Agent: Woodcock Washburn LLP

20090103336 - Control apparatus: The present invention provides a control apparatus for detecting an early stage short circuit between the terminals of an electrolytic capacitor, and detecting a short circuit between a load that is connected in parallel to the electrolytic capacitor, the apparatus performing appropriate processing before an adverse effect is inflicted on... Agent: GlobalIPCounselors, LLP

20090103337 - Method and apparatus to reduce the volume required for bulk capacitance in a power supply: A driver circuit included in a power supply having a rectifier coupled to a single phase AC input voltage is disclosed. An example driver circuit includes a drive signal generator to generate a drive signal to be coupled to a variable impedance element. A voltage sensor is coupled to the... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090103338 - Switching power source apparatus: A switching power source apparatus includes a switching element connected through a primary winding of a transformer to a voltage terminal of a DC input voltage, a rectifying-smoothing circuit to rectify and smooth a voltage induced by a secondary winding of the transformer and provide a DC output voltage, a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090103339 - Method for operating an inverter: A method for operating an inverter for converting direct voltage into alternating voltage, having two direct-voltage terminals and two alternating-voltage terminals, between which a plurality of power switching elements clocked at high-frequency are connected. The high-frequency clocking of the power switching elements of the inverter is switched off around a... Agent: Lerner Greenberg Stemer LLP

20090103340 - Inverter, more specifically for photovoltaic plants: On an inverter (1) for converting an electric direct voltage, in particular of a photovoltaic direct voltage source into an alternating voltage with a direct voltage input with two terminals (DC+, DC−) and one alternating voltage output with two terminals (AC1, AC2) and with one bridge circuit including semiconductor switching... Agent: Pyle & Piontek Attn: Thomas R. Vigil

20090103341 - Integrated bi-directional converter for plug-in hybrid electric vehicles: This invention relates to a power module for a plug-in hybrid electric vehicle including an integrated converter having a rectifier changing AC to DC, a DC/DC converter changing from a first voltage to a second voltage, and a battery storing electrical energy. The integrated converter operates in three modes 1)... Agent: Pauley Petersen & Erickson

20090103342 - Silicon-controlled rectifier with a heat-dissipating structure: A silicon-controlled rectifier with a heat-dissipating structure has a heat sink, a silicon-controlled rectifying assembly, an outer contact assembly, a gate-contact assembly and a clamp. The heat sink is electrically and thermally conductive and has an inner contact surface and multiple fastener holes being formed in the flat surface around... Agent: Hershkovitz & Associates, LLC

04/16/2009 > patent applications in patent subcategories.

20090097279 - Inductance-voltage clamping full-bridge soft-switch circuit: The present invention discloses an improved inductance-voltage clamping full-bridge soft-switch circuit, comprising a full-bridge converter, a transformer, an output rectifying unit, an inductor, a clamping resistor, a capacitor, a first clamping diode and a second clamping diode. The inductor includes a first winding used as an auxiliary inductor and a... Agent: Harness, Dickey & Pierce, P.L.C

20090097280 - Resonant converter system having synchronous control circuit and controlling method thereof: The configurations of a resonant converter system and a controlling method thereof are provided. The proposed resonant converter system includes a resonant converter receiving an input voltage for outputting an output voltage, a rectifying device having a first rectifying switch and a synchronous rectification control circuit coupled to the resonant... Agent: Volpe And Koenig, P.C.

20090097281 - Leakage-inductance energy recycling circuit and flyback converter with leakage-inductance energy recycling circuit: A flyback converter with a leakage-inductance energy recycling circuit includes a transformer and a leakage-inductance energy recycling circuit. The leakage-inductance energy recycling circuit includes a clamping circuit, an energy storage circuit, and a switch connected between the clamping circuit and the energy storage circuit. A power transistor is electrically connected... Agent: North America Intellectual Property Corporation

20090097282 - Frequency converting apparatus and control method for the apparatus: A power converting apparatus and method includes a converter for converting AC power from a commercial power supply into DC power, a smoothing unit for smoothing the DC power from the converter, an inverter for converting an output of the smoothing unit into another AC power, a control unit for... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090097283 - Methods for minimizing double-frequency ripple power in single-phase power conditioners: A method is provided for minimizing a double-frequency ripple power exchanged between a load and an energy source, the energy source delivering electrical power to the load through a single-phase power conditioner, and the power conditioner being coupled to an energy storage device. The method senses a first AC waveform... Agent: Sonnenschein Nath & Rosenthal LLP

20090097284 - Switching power supply: In the present invention, an on time is used which increases at an instantaneous interruption. The on time is detected by a MAX-DUTY detector 10 and the overload protection function of an overload protection circuit 150 is disabled.... Agent: Steptoe & Johnson LLP

20090097285 - Variable load, variable output charge-based voltage multipliers: A charge-based voltage multiplier device comprising a charge-pump circuit and a charge-pump controller is provided. The charge-pump circuit is configured to multiply an input voltage signal (Vin) into an output voltage signal (Vout), the charge-pump circuit includes a plurality of charge-pump stages, wherein at least one of the charge-pump stages... Agent: Freescale Semiconductor, Inc. Law Department

20090097286 - Power supply having an extending hold-up time controlling unit: A hold-up time extension controlling device for a power supply, that has a power factor correction circuit, a hold-up time extension circuit, a hold-up time controlling circuit, a storage capacitor and a DC to DC converter. The hold-up time extension controlling device has a switch and an auxiliary capacitor. When... Agent: Bacon & Thomas, PLLC

20090097287 - Inverter control circuit and control method thereof: In an inverter control circuit for controlling an inverter circuit, when an analog signal from the inverter circuit is amplified and converted from analog to digital, a timing at which a gain of an amplifier is switched is securely detected, and the gain is switched. An inverter control circuit includes:... Agent: Mcginn Intellectual Property Law Group, PLLC

20090097289 - Feedback communication technique for switched mode power supply: A power conversion circuit for a switched mode power supply (SMPS) 11 is arranged to be switchable between a normal mode of operation and a burst standby mode of operation. In an embodiment, the SMPS 11 comprises an AC/DC stage having a primary (input) side and a secondary (output) side... Agent: Nxp, B.v. Nxp Intellectual Property Department

20090097288 - Output power switching vector scaling system and method: A power converter control system and method is provided to maximize the power output of the converter where an overload condition is present. A controller calculates a command voltage and command power factor. The command voltage and command power factor are used to generate a switching vector. Where the voltage... Agent: Honeywell International Inc.

20090097290 - Isolated power converter: An isolated power converter that includes, in one embodiment, a first magnetic core having a primary winding and a secondary winding around the first magnetic core. The power converter includes a second magnetic core having a first leg, a second leg coupled to the first leg, and a third leg... Agent: Fish & Richardson P.C.

20090097291 - Universal power supply for a laptop: A highly efficient DC power supply for laptop computers and the like is converted directly off-line from an A.C. or DC voltage source to have a plurality of output voltages closely regulated according to the computer requirements and includes a DC voltage source for operating integrated circuits that is independent... Agent: John F. Bryan

20090097292 - On-board vehicle power: A modular vehicle power system for a vehicle, the modular vehicle power system obtaining DC power the vehicle and producing AC power and method therefore. A plurality of power modules, each of the plurality of power modules receiving the DC power from the vehicle and producing the AC power, wherein... Agent: Iplm Group, P.A.

20090097293 - High-frequency power supply: A plurality of half-wave bridge type oscillators are operated in a time-sharing method and connected through primary windings of a transformer to make the reverse bias hold time of each thyristor long. Therefore, it is possible to stably output a frequency and power which are several times as high as... Agent: Edwards Angell Palmer & Dodge LLP

04/09/2009 > patent applications in patent subcategories.

20090091950 - Power converting circuit with open load protection function: A power converting circuit with an open load protection function is electrically connected to a power supply providing a first voltage level, and outputs a second voltage level to drive a load. The power converting circuit includes a DC/DC converter and a rectifying element disposed between an output node and... Agent: North America Intellectual Property Corporation

20090091951 - Control circuit for synchronous rectifying and soft switching of power converters: A control circuit for soft switching and synchronous rectifying is provided for power converter. A switching-signal circuit is used for generating drive signals and a pulse signal in response to a leading edge and a trailing edge of a switching signal. The switching signal is developed for regulating the power... Agent: J C Patents, Inc.

20090091952 - Dc-dc converter: Disclosed is a DC-DC converter for suitably converting the voltage of a solar panel into a desired output voltage to be supplied to various observation equipment installed in an artificial satellite. The DC-DC converter 10 comprises an input coil L1, a first intermediate capacitor C1 and a first intermediate coil... Agent: Nec Corporation Of America

20090091953 - Compensating for inductance variation in a power converter using a dual-purpose feedback pin: A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp... Agent: Imperium Patent Works

20090091954 - Power converter and power conversion method: This invention provides a power converter and a power conversion method that can reduce distortions of an output voltage and an output current, can simply a calculation processing, and is inexpensive and has a high performance even when a PWM pulse gets narrow. In a power converter for connecting each... Agent: Sughrue-265550

20090091955 - Quasi resonant switching mode power supply: A switching mode power supply (SMPS) and a driving method thereof are provided. The SMPS includes a power supply block that includes a first switch coupled to a first coil of a primary side of a transformer for converting an input voltage, wherein the power supply block supplies power to... Agent: Sidley Austin LLP

20090091956 - System for producing electric power from renewable sources and a control method thereof: Described herein is a system for generating electric power, comprising: an electric-power source (1) having a preferential point of operation; a double-stage inverter (3A, 3B), which transfers the energy from said source to an external a.c.-voltage electrical network (9); a block (5) for identification of the preferential point of operation,... Agent: Waddey & Patterson, P.C.

20090091957 - Cascaded pfc and resonant mode power converters: A control unit controls cascaded PFC and LLC converters, the LLC converter having an input coupled to an output, of the PFC converter and providing an output voltage that decreases with increasing switching frequency. The control unit produces a sawtooth waveform with a linear ramp for controlling the LLC converter... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090091958 - Device for simulating rectified constant impedance load and method thereof: The device for simulating a rectified constant impedance load provide by the present invention is to test a power product and comprises an analog-digital converter, a digital signal processor, a digital-analog converter, and an active electrical load module in order to replacing the passive components of a traditional rectified passive... Agent: Birch Stewart Kolasch & Birch

20090091959 - Power supply unit, image forming apparatus, and method for controlling power supply: In an image forming apparatus, a monitoring unit monitors whether a returning factor required to switch an operational state of the apparatus from a power-saving mode to an operating mode is generated, an antenna unit receives external electrical wave, a power generation unit generates electricity from the received electrical wave... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090091960 - Method and apparatus for synchronous rectifying of soft switching power converters: An apparatus for synchronous rectifying of a soft switching power converter is provided. An integrated synchronous rectifier includes a power transistor coupled between a transformer and the output of the soft switching power converter, and a controller receiving a pulse signal to switch on/off the power transistor. A switching control... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090091961 - Single-stage power factor correction circuit: A single-stage power factor correction circuit includes a first rectifier, a second rectifier, a full bridge rectifier, a capacitor, a fly back transformer, and a switch. Unlike conventional single-stage power factor correction circuits, the present invention just needs to pass through two rectifiers at positive and negative half cycles, so... Agent: Troxell Law Office PLLC One Skyline Place

04/02/2009 > patent applications in patent subcategories.

20090086511 - Converter circuit with pulse width frequency modulation and method thereof: A converter circuit is provided herein. In the converter, a voltage converting unit receives an input voltage and outputs an output voltage according to the magnitude of the input voltage by switching operation based on a control clock signal. A comparing circuit generates a power good pulse signal by comparing... Agent: J C Patents, Inc.

20090086512 - Driving a primary-side switch and a secondary-side rectifier element in a switching converter: An apparatus, comprising a transformer comprising a first winding and a second winding; a first switch coupled to the first winding and configured to alternate between an off state and an on state in response to a pulsed first signal; a rectifier coupled to the second winding and configured to... Agent: Banner & Witcoff, Ltd. Attorneys For Client 007052

20090086513 - Control method and device for switching power supplies: A control device for controlling a switching power supply adapted to convert an input voltage into an output voltage according to a switching rate of a switching element. The control device includes first control means for switching the switching element in a first working mode at a constant frequency and... Agent: Graybeal Jackson LLP

20090086514 - Method and apparatus for providing power conversion using an interleaved flyback converter with automatic balancing: A method and apparatus for converting DC input power to DC output power. The apparatus comprises a plurality of parallel connected flyback circuits. A controller is coupled to the switches within the flyback circuits to provide accurate timing and automatic current balancing amongst the plurality of flyback circuits.... Agent: Raymond R. Moser Jr., Esq. MoserIPLaw Group

20090086515 - Direct ac power converting apparatus: Capacitors are connected in series between a first DC link section and a second DC link section when the capacitors are charged by a regenerative current derived from an inverter section. During discharge, as first, second switching circuits turn on, the capacitors are discharged with those capacitors connected in parallel... Agent: GlobalIPCounselors, LLP

20090086516 - Architecture for switching on and off power: An architecture for switching on and off power, which applies to a power supply has a power factor regulation unit, a primary power system, and a regular power system. The regular power system provides the primary power system with a regular power to start the primary power system. The regular... Agent: Joe Mckinney Muncy

20090086517 - Dc/dc boost converter with resistorless current sensing: A DC to DC boost converter circuit receives a DC input voltage and converts it to a DC output voltage at a different voltage level than the DC input voltage. The DC to DC boost converter includes a switching power converter for receiving the input voltage on an input and... Agent: Howison & Arnott, L.l.p

20090086518 - Switching mode power supplies with digital electromagnetic interference control: A method of programming a switching mode power supply before or after the power supply is installed in a system to control electromagnetic interference. The switching mode power supply includes at least one switching device and a digital controller. The digital controller adjusts a switching frequency of the at least... Agent: Harness, Dickey, & Pierce, P.l.c

20090086519 - Induction heating apparatus: The induction heating apparatus includes a boosting function unit, an inverter circuit 15 and a booster circuit controller 32. The boosting function unit which includes a power factor correction circuit 7 and a booster circuit 14, inputs a direct-current power, boosts the input direct-current power to a direct-current voltage having... Agent: Wenderoth, Lind & Ponack L.L.P.

20090086520 - Grid-connected power conditioner and grid-connected power supply system: During charging operations of a power storage unit, a voltage converting unit converts a voltage received from direct-current buses and supplies it to power storage unit, whereas during discharging operations of power storage unit, voltage converting unit converts a voltage received from power storage unit and outputs it to direct-current... Agent: Nixon & Vanderhye, PC

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