Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems February patent applications/inventions, industry category 02/11

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.
02/24/2011 > patent applications in patent subcategories.

20110044074 - Control arrangement for a resonant mode power converter: A resonant mode power converter is controlled with a control unit including a feedback circuit coupled to generate a first current representative of an output of the power converter. A current limiting circuit is coupled to receive the first current and a second current generated in response to a reference... Agent: Blakely Sokoloff Taylor & Zafman LLP

20110044075 - Power converter capable of lowering power wastage on standby: A power converter includes at least one electric control switch, an electric current detecting and converting unit, a power controller, and a voltage detecting and controlling unit at the primary side; and a synchronous rectifying circuit, two MOSFETs, and an oscillating loop. During the actual operation, electric current detecting and... Agent: Bacon & Thomas, PLLC

20110044076 - Systems and methods for load compensation with primary-side sensing and regulation for flyback power converters: System and method for regulating an output voltage of a power conversion system. The system includes a sampling component located on a chip configured to receive an input voltage through a terminal. The sampling component is configured to sample the input voltage and generate a sampled voltage. Additionally, the system... Agent: Jones Day

20110044077 - 3-phase high-power ups: According to one aspect, embodiments of the invention provide power converter circuitry including an input including a plurality of input lines each configured to be coupled to a phase of a multiphase AC power source having a sinusoidal waveform, a plurality of DC buses including a first positive DC bus... Agent: Lando & Anastasi, LLP A2000

20110044078 - Method for converting direct current to alternating current: A direct current to alternating current inverter is described herein. In an embodiment of the present subject matter, various direct voltage electrical potentials are applied to rings of a rotor so that each ring of the rotor is a different direct current potential. Preferably, the direct current potentials are applied... Agent: Woodcock Washburn LLP

20110044079 - Circuit and method for controlling the power supply of a consumer with current pulses having steep flanks: d

20110044080 - Converter: A converter includes a converter bridge (101) adapted to transfer electrical energy between the AC terminal (102) and the DC terminal (103) of the converter. The converter also includes electrical paths bypassing the converter bridge for conducting overvoltage transients occurring in the AC terminal around the converter bridge to the... Agent: Young & Thompson

20110044081 - Full-wave rectifier: A full-wave rectifier of the present invention, has an input AC power source, a pair of input terminal A and B, a pair of first and second switching element Q1 and Q2 comprises a first and a second Lus P-Channel FET, a pair of third and fourth switching element Q3... Agent: Lu, Chao-cheng 4-4, Alley 27

20110044082 - Voltage source converter: A Voltage Source Converter having at least one phase leg connected to opposite poles of a direct voltage side of the converter and comprising a series connection of switching cells has an arrangement configured to apply a pressure to opposite ends of stacks of semiconductor assemblies for pressing the assemblies... Agent: Birch Stewart Kolasch & Birch

20110044083 - Adaptive photovoltaic inverter: A DC to AC inverter unit used in a solar cell power system can include a controller capable of adjusting the inverter's minimal operating voltage to increase the inverter unit power capacity.... Agent: Steptoe & Johnson LLP

02/17/2011 > patent applications in patent subcategories.

20110038179 - Power converter including a charge pump employable in a power adapter: A power converter including a charge pump employable in a power adapter. In one embodiment, the charge pump includes a voltage divider with a first diode having a terminal coupled to a terminal of a first capacitor and a second diode having a terminal coupled to a terminal of a... Agent: Slater & Matsil, L.L.P.

20110038181 - Resonant converter having over-current protection apparatus and controlling method thereof: The configurations of a DC/DC resonant converter and a controlling method thereof are provided. The proposed converter includes an over-current protection apparatus including a first switch element having a first and a second terminals, and a first voltage element having a negative terminal coupled to a positive terminal of a... Agent: Haverstock & Owens LLP

20110038180 - Resonant power converter with half bridge and full bridge operations and method for control thereof: A resonant power converter with half bridge and full bridge operations and a method for control thereof are provided. The resonant power converter includes a full bridge circuit, a control circuit and a PFC circuit. The full bridge circuit switches a power transformer in response to switching signals. The control... Agent: Jianq Chyun Intellectual Property Office

20110038182 - Power converter having synchronous rectifier and control method of synchronous rectifier: Disclosed is a power converter including a switching circuit; a transformer having a primary winding connected to the switching circuit and a secondary winding; a main control circuit connected to the switching circuit for outputting a main control signal to manipulate the switching circuit; at least one synchronous rectifier connected... Agent: Kirton And Mcconkie

20110038184 - Isolated ac-dc converter with master controller on secondary side and slave controller on primary side: An isolated alternating current (AC)-direct current (DC) converter is disclosed. The isolated AC-DC converter comprises a slave control circuit including a slave driver module configured to receive a command and to control coupling of the slave control circuit to a primary-side inductor of a transformer based on the command, a... Agent: Harness, Dickey & Pierce P.L.C

20110038183 - Switching regulator having terminal for feedback signal inputting and peak switching current programming: A switching regulator of a power converter is provided and includes a feedback-input circuit, a programming circuit, and a peak-current-threshold circuit. The feedback-input circuit is coupled to a terminal of the switching regulator for receiving a feedback signal. The feedback-input circuit is operated in a first range of a terminal... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20110038185 - Low stress soft charge circuit for diode front end variable frequency drive: A variable frequency drive comprises a diode rectifier receiving multiphase AC power from a source and converting the AC power to DC power. An inverter receives DC power and converts the DC power to AC power to drive a load. A link circuit is connected between the diode rectifier and... Agent: Wood, Phillips, Katz, Clark & Mortimer

20110038186 - Digital control for controlling and linearizing an ac impedance: An apparatus for regulating AC power of a power source in a power circuit is provided. The apparatus includes a full-wave bridge rectifier, a power transistor array, and a controller. The full-wave bridge rectifier is configured to receive an AC input put from the power source. The power transistor array... Agent: Morrison & Foerster LLP

20110038187 - Bipolar pulsed power supply and power supply apparatus having plurality of bipolar pulsed power supplies: A bipolar pulsed power supply is provided in which, while effectively restricting the rise in current at the time of arcing which directly leads to the generation of splashes and particles, the occurrence of overvoltage at the time of polarity reversal is prevented. The power supply has a bridge circuit... Agent: Tomoko Nakajima Cermak Nakajima LLP

20110038188 - Continuous conduction mode power factor correction circuit with reduced sensing requirements: A power supply circuit includes continuous conduction mode power factor correction (PFC). The PFC may be performed by generating a carrier signal voltage at a beginning of a switching cycle of the power supply, generating a sampling voltage indicative of drain current of a drive transistor, and detecting when the... Agent: Okamoto & Benedicto, LLP

20110038189 - Closed-loop efficiency modulation for use in ac powered applications: A system and method for closed-loop efficiency modulation for an AC/DC power system is provided. A boost-buck converter and a DC/DC converter connected in series receive a rectified DC feed signal from a AC input signal and deliver a modified DC output to an active load. A controller receives power... Agent: Terry W. Kramer, Esq. Kramer & Amado, P.C.

20110038190 - Controlled contactless power transmission: An inductive coupled power transmission circuit has a rotating transformer, including an AC voltage supply for feeding an AC voltage via a series capacitor into the primary winding of said rotating transformer and a load being coupled to the secondary winding of said rotating transformer. The AC voltage supply includes... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

20110038192 - Converter control method: A PI control section performs a PI control on a deviation which is a difference between a DC voltage command and a DC voltage, and outputs a d-axis current command value. A PI control section performs a PI control on a deviation which is a difference between the d-axis current... Agent: Birch Stewart Kolasch & Birch

20110038191 - Rectifier circuit and radio communication device using the same: A rectifier circuit includes an input terminal that receives an alternating-current signal, a first rectifier circuit that generates a first direct-current voltage from the alternating-current signal, a bias-voltage generating circuit that generates a bias voltage from the first direct-current voltage, and a second rectifier circuit that generates a second direct-current... Agent: Turocy & Watson, LLP

20110038193 - Voltage source converter: A Voltage Source Converter having at least one phase leg connected to opposite poles of a direct voltage side of the converter and comprising a series connection of switching elements including at least one energy storing capacitor and configured to obtain two switching states, namely a first switching state and... Agent: Birch Stewart Kolasch & Birch

02/10/2011 > patent applications in patent subcategories.

20110032730 - Sampling circuit and control method: An embodiment provides a sampling circuit, which has a sampling capacitor and a voltage compensation circuit. The voltage compensation circuit has a reference capacitor and a compensation circuit. The sampling capacitor samples a voltage signal and memorizes the signal as a sampling signal. The reference capacitor memorizes a reference signal... Agent: North America Intellectual Property Corporation

20110032731 - Multiple independently regulated parameters using a single magnetic circuit element: Methods, systems, and devices are described for using isolated and non-isolated circuit structures and control methods for achieving multiple independently regulated input and output parameters using a single, simple, primary magnetic circuit element. For example, structures and methods are revealed for achieving single-stage power factor correction with high power factor... Agent: Townsend And Townsend And Crew, LLP

20110032733 - Dc-dc converter and power supplying system including same: A DC-DC converter has a first-voltage-side port, a second-voltage-side port, and a third-voltage-side port, and performs, at different timings, an operation of boosting a first voltage to a third voltage and an operation of bucking a second voltage to the third voltage. A power supplying system includes a fuel cell,... Agent: Nelson Mullins Riley & Scarborough LLP Floor 30, Suite 3000

20110032732 - Secondary side post regulator of flyback power converter with multile outputs: A flyback power converter with multiple outputs has a transformer, a low-voltage output circuit, a high-voltage output circuit, and a secondary side post regulator circuit is provided. The transformer has a first secondary winding and a second secondary winding. The low-voltage output circuit has a low-voltage output capacitor and a... Agent: Rosenberg, Klein & Lee

20110032734 - Cascaded switching power converter for coupling a photovoltaic energy source to power mains: A cascaded switching power converter for coupling a photovoltaic (PV) energy source to power mains provides a high-efficiency and a potentially simple control mechanism for AC solar energy conversion systems. The PV energy source charges a capacitive storage element through a DC-DC converter, and an inverter couples energy from the... Agent: Mitch Harris, LLC - Cirrus

20110032735 - Universal three phase controllers for power converters: The systems and methods described herein provide for a universal controller capable of controlling multiple types of three phase, two and three level power converters. The universal controller is capable of controlling the power converter in any quadrant of the PQ domain. The universal controller can include a region selection... Agent: Orrick, Herrington & Sutcliffe, LLPIPProsecution Department

20110032736 - Mirror-image voltage supply: A voltage supply incorporates two voltage supplies connected in a mirror-image series arrangement to generate a DC voltage between the respective common terminals of the voltage supplies.... Agent: Cesari And Mckenna, LLP

20110032737 - Power factor correction circuit for three-phase power supply: A power-factor correction circuit for a three-phase power supply is provided. The correction circuit comprises a filtering unit at the input receiving the three phases of the current, at least one inductor per phase placed downstream of the filtering unit, a rectifying bridge powering a current-chopping stage, wherein the filtering... Agent: Baker & Hostetler LLP

20110032738 - System and method for power factor correction: A first rectifier diode is electrically connected between a first input terminal where an alternating current (AC) power is received and a first output terminal where a direct current (DC) power is output. A second rectifier diode is electrically connected between the first input terminal and a second output terminal.... Agent: Harness, Dickey & Pierce, P.L.C

20110032739 - Method and device to compensate for an asymmetrical dc bias current in a power transformer connected to a high voltage converter: A method and a device to compensate for an asymmetrical DC bias current in a multi-phase transformer. The transformer is connected between an AC power system and an AC/DC or DC/AC high voltage converter. For each phase of the AC side of the transformer a current quantity is determined. The... Agent: Venable LLP

02/03/2011 > patent applications in patent subcategories.

20110026275 - Voltage-regulating circuit with input voltage detecting circuit and parallel voltage-regulating circuit system using the same: A voltage-regulating circuit according to the present invention includes a power conversion circuit, an input voltage detecting circuit and a feedback circuit. The power conversion circuit includes at least one switch element, wherein during operation of the at least one switch element, an input voltage is converted into a transition... Agent: Kirton And Mcconkie

20110026276 - Switching power supply: A switching power supply includes: a transformer including primary and secondary windings; a switching circuit including first and second switching elements, first and second rectifying elements, first and second capacitive elements and a first inductor; and a rectifying/smoothing circuit. A first bridge circuit is configured by the first and second... Agent: Oliff & Berridge, PLC

20110026277 - driving circuit: A driving circuit for an opto-coupler comprising a switched mode regulator configured to convert a first voltage to a second voltage, the switched mode regulator operable in accordance with a control signal (311) representative of the first voltage, and wherein the second voltage is used to drive the diode (304a)... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20110026278 - Current-controlled self-oscillating flyback converter with two transistors: A current controlled self-oscillating flyback converter with two transistors. The converter includes a soft start circuit, a MOS transistor, a transformer, a pulse frequency modulation circuit, a reference amplification circuit, an isolation optical coupler and a voltage-stabilized output circuit. The pulse frequency modulation circuit includes a transistor, a third resistor,... Agent: Ballard Spahr LLP

20110026279 - Frequency-hopping control method and module, and dc/dc converter: A frequency-hopping control method is performed by a frequency-hopping control module that generates a driving signal for driving a voltage converting circuit to generate an output voltage. The method includes, generating a control signal according to a regulating signal inversely proportional to the output voltage of the voltage converting circuit.... Agent: Rosenberg, Klein & Lee

20110026280 - Power conversion apparatus: The invention relates to a power conversion apparatus including a converter circuit and an inverter circuit. The invention allows more precise output control of the inverter circuit than a power conversion apparatus in which the output control is performed based on a current value only, thereby improving operation efficiency. A... Agent: Birch Stewart Kolasch & Birch

20110026281 - Apparatus and method for controlling dc-ac power conversion: An apparatus and method for controlling the delivery of power from a DC source to an AC grid includes an inverter configured to deliver power from the unipolar input source to the AC grid and an inverter controller. The inverter includes an input converter, an active filter, and an output... Agent: Barnes & Thornburg LLP

20110026282 - Apparatus for converting direct current to alternating current: An inverter for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform for delivery to an AC grid includes an input converter, an output converter, and an active filter, each of which is electrically coupled to a bus. The bus may... Agent: Barnes & Thornburg LLP

20110026283 - Power system interconnection system and power converting method: A power system interconnection system includes: a voltage detecting section configured to detect voltage values of a power system line to generate detection voltage values; and a PWM signal generating section configured to generate a PWM signal such that an output voltage follows the detection voltage values. A voltage converting... Agent: Sughrue Mion, PLLC

20110026284 - Power factor control systems and methods: A boost converter comprises an inductance that receives an input signal. A switch controls current supplied by the inductance to a load. A power factor control module comprises a mode control module that selects an operating mode of the boost converter and a switch control module that switches the switch... Agent: Harness, Dickey & Pierce P.L.C

20110026285 - Bidirectional switch circuit and power converter including the same: A bidirectional switch circuit includes two switching elements connected to conduct a current in both directions. The two switching elements are connected in series to each other. Of the two switching elements, the switching element to which a reverse voltage is applied, a voltage of a source of one of... Agent: Birch Stewart Kolasch & Birch

20110026286 - Transformer with power factor compensation and a dc/ac inverter constructed thereby: A transformer with power factor compensation and a DC/AC inverter constructed thereby are presented. The power factor compensation transformer includes a primary winding, a secondary winding, and a power factor compensation capacitor bank, while the secondary winding having a coupling winding and a power factor compensation winding. The primary winding... Agent: Kamrath & Associates P.A.

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