Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems January recently filed with US Patent Office 01/10

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.
01/28/2010 > patent applications in patent subcategories.

20100020569 - Resonant switching power converter with adaptive dead time control: A resonant switching power converter having adaptive dead time control provides improved efficiency along with reduced EMI/audible noise and component stresses. A dead time between pulses generated by a switching circuit is adaptively set in conformity with a value of the input voltage to the resonant switching power converter and... Agent: Mitch Harris, LLC - Cirrus

20100020570 - Resonant switching power converter with burst mode transition shaping: A resonant switching power converter having burst mode transitioning operates during low or zero load conditions with reduced audible noise and component stresses, while improving efficiency. Pulse bursts are generated with a beginning and/or ending pulse duration that differs from mid-burst pulse durations, in order to reduce an amplitude of... Agent: Mitch Harris, LLC - Cirrus

20100020571 - Inverter generator: In an inverter generator having an engine generator unit, a converter that converts generated alternating current to direct current, an inverter that converts the direct current to alternating current with switching elements to supply to an electrical load, an inverter driver that drives the switching elements with a PWM signal... Agent: Arent Fox LLP

20100020572 - Inverter generator: In an inverter generator having an engine generator having a generator unit, a converter that converts generated alternating current to direct current, an inverter that converts the direct current to alternating current with switching elements to supply to an electrical load, an inverter driver that drives the switching elements with... Agent: Arent Fox LLP

20100020573 - Audible noise suppression in a resonant switching power converter: Audible noise in resonant switching power converter during low-power burst mode operation is reduced by spreading the spectrum generated by the bursts, thereby reducing the amplitude of audio spectrum peaks in the current supplied through the resonant tank from a switching circuit. The spreading can be accomplished by varying the... Agent: Mitch Harris, LLC - Cirrus

20100020574 - Power adapter and conversion method: A power adapter and conversion method for converting an alternating voltage to a direct voltage supplied to a load are provided. The power conversion method includes the following steps. The alternating voltage is received and filtered to generate a filter voltage. The filter voltage is received and rectified to generate... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100020575 - Switching power supply device: A switching power supply device includes: a transformer having a primary winding, a secondary winding and an auxiliary winding; a switching element connected to the primary winding of the transformer; a control circuit that performs an ON/OFF control for the switching element in a case where a voltage is inputted... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100020576 - Power converter circuitry: A power converter circuitry for converting a DC voltage generated by a generator with varying output power in the mean voltage range into an alternating voltage for feeding into a grid, with several series-connected power converters, which are connected in parallel with said generator, as well as with a controllable... Agent: Panitch Schwarze Belisario & Nadel LLP

20100020577 - Production of a real power equilibrium of the phase modules of a converter: A converter has at least one phase module, an AC voltage terminal and a DC voltage terminal. A phase module branch is formed between each DC voltage terminal and each AC voltage terminal. Each phase module branch has a series circuit containing submodules which each have a capacitor, a power... Agent: Lerner Greenberg Stemer LLP

20100020578 - Adapter power supply: An adapter power supply according to present invention may include an AC/DC converter converting a commercial AC power into a DC power; a DC/DC converter including a transformer composed of a primary terminal and a secondary terminal in order to output an output power by converting a link voltage of... Agent: Lowe Hauptman Ham & Berner, LLP

20100020579 - Power supply with accurate energy measurement: A power supply includes a rectifier having an AC input and a DC output and a power factor correction (PFC) preregulator, coupled to the rectifier, that increases a power factor of the power supply. The PFC preregulator includes a controller that integrates an input power to determine energy consumption and... Agent: Dillon & Yuell LLP

20100020580 - High-voltage power supply: A high-voltage power supply includes a first circuit which is realized on a first board, receives a first voltage, and generates a second voltage according to the first voltage, and a second circuit which is realized on a second board stacked on the first board and amplifies the second voltage... Agent: Stanzione & Kim, LLP

20100020581 - Power conversion components, systems and methods: Components, systems and methods for generating variable frequency AC voltage from a DC power supply are described. The components include a fullbridge (FB) parallel load resonant (PLR) converter which operates in discontinuous conduction mode. The PLR converter includes MOSFETs in an H-bridge configuration and employs a topology which minimizes inductance.... Agent: Butler, Snow, O'mara, Stevens & Cannada PLLC

20100020582 - Ac/dc power converter: A dual input AC/DC power converter (10) having dual inputs (12, 14) adapted to receive both an AC and DC input and provide a selectable DC voltage output (16) and a second DC output (18). The dual input AC/DC power converter (10) comprises a power converter circuit (20) having an... Agent: Snell & Wilmer L.L.P. (main)

01/21/2010 > patent applications in patent subcategories.

20100014320 - Switching power supply device and method for adjusting dead time thereof: A resonant switching power supply device includes: a first switching element and a second switching element which are configured to convert and adjust power. A capacitance of a first/second gate-drain capacitor existing between a gate and a drain of the first/second switching element and a resistance of a first/second gate... Agent: Wilmerhale/dc

20100014322 - Switched mode power supply and method of production: A switched mode power supply allowing a half bridge converter to be use alone or in combination with another converter to form a full bridge converter. A common controller may be used for either half bridge or full bridge configurations. The modular approach simplifies design for a range of power... Agent: Myers Bigel Sibley & Sajovec

20100014321 - Variable switching frequency type power supply: There is provided a variable switching frequency type power supply that can achieve high efficiency by fixing a switching duty cycle to 50% and varying switching frequency. A variable switching frequency type power supply according to an aspect of the invention may include: a switching unit switching input power; a... Agent: Lowe Hauptman Ham & Berner, LLP

20100014323 - Voltage control device and voltage control method: A voltage control device and a voltage control method capable of improving efficiency of a system as a whole even when fluctuation in voltage of a capacitor, which is a storage battery, is large are provided. A capacitor for supplying electric power to a predetermined load, an inverter connected to... Agent: Edwards Angell Palmer & Dodge LLP

20100014324 - Offline synchronous rectifying circuit with sense transistor for resonant switching power converter: A synchronous rectifying circuit of a resonant switching power converter is provided to improve the efficiency. The synchronous rectifying circuit includes a power transistor and a diode connected to a transformer and an output ground of the power converter for rectifying. A sense transistor is coupled to the power transistor... Agent: Jianq Chyun Intellectual Property Office

20100014325 - Ac-ac converter with high frequency link: An AC-AC Converter for an AC source which in one embodiment has a first rectifier section rectifying the AC source into a first pulsed DC link voltage signal and a high frequency modulating section coupled to the first pulsed DC link voltage signal and producing a high frequency AC voltage... Agent: General Electric Company Global Research

20100014326 - Means of eliminating electrolytic capacitor as the energy storage component in the single phase ad/dc two-stage converter: A power factor correction (PFC) circuit includes an inductor, a diode, a storage capacitor, a switch and a control unit. The input power has a voltage fluctuation V1. The storage component absorbs a first voltage fluctuation and a switch regulation circuit absorbs a second voltage fluctuation V2. Thus output voltage... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100014327 - Current control type converter: A current control type converter has a converter section and a control section that includes three controllers. A first controller calculates and outputs an active current instruction value by proportional-plus-integral control to perform proportional integration of a deviation between the value of a DC voltage outputted from the converter section... Agent: GlobalIPCounselors, LLP

20100014328 - direct current generator and the pulse generator thereof: The present invention provides a direct current generator and a pulse generator thereof. The pulse generator includes a comparator to replace a central processing unit and a logic integrated circuit to save the costs and space required by the electronic components. The pulse generator generates pulses to control the activation... Agent: CovenantIPConsulting Co.

20100014330 - Ac to dc power converter with hold-up time function: An AC to DC power converter with hold up time function has a charging switch and a mode switch. The charging switch is connected between an output capacitor of a PFC controlling circuit and an energy-storage capacitor. The mode switch is connected between the energy-storage capacitor and an input of... Agent: Apex Juris, PLLC

20100014329 - Enhanced one cycle control for power factor correction: A method of controlling a power factor correction (PFC) converter that has a discontinuous input current includes sensing the input current, sensing an output voltage and controlling a duty cycle of at least one switch in the converter in response to the sensed input current and output voltage using a... Agent: Harness, Dickey, & Pierce, P.l.c

20100014331 - Power converter, switching control device thereof, and driving method thereof: A power converter according to the present invention includes a power supply unit, an output unit, and a switching controller. The power supply unit includes a primary coil of a transformer that receives an input voltage, a gate electrode, and a switch having a first electrode and a second electrode... Agent: Okamoto & Benedicto, LLP

20100014332 - System and method for providing a dc voltage source within a power meter: A power meter for measuring power consumption and detecting the presence of an unsafe line condition is disclosed. The power meter has a service disconnect switch, which is interposed between load contacts and source contacts, the disconnect switch interrupts the flow of power from the source contacts to the load... Agent: Woodcock Washburn LLP

20100014334 - Electric power supply circuit: An electric power supply circuit includes a diode bridge circuit (12) for rectifying an alternating current, a switching element (S) for causing a short-circuit for output power of the diode bridge circuit (12), and a PAM control section (15) for causing the switching element (S) to perform switching with a... Agent: Birch Stewart Kolasch & Birch

20100014333 - Electric power unit for induction heating: Reverse conducting type semiconductor switches are arranged in a bride from, an energy storage capacitor is connected with its DC terminal to obtain a magnetic energy regeneration switch, and then an induction coil is connected to its AC terminal. An AC pulse current of variable frequency is obtained by applying... Agent: International Knowledge Asset Office

20100014336 - Dc-ac converter and method of supplying ac power: A dc-ac converter capable of supplying a finely regulated ac drive voltage to a load is provided. For this purpose, the converter includes, in a primary winding of a transformer, a full-bridge or half-bridge type semiconductor switch circuit whose switch can be controlled by pulse-width modulation. Transformer has a secondary... Agent: Hogan & Hartson L.L.P.

20100014335 - Three-phase power converting apparatus: A three-phase inverter circuit (4) of which DC portion is smoothing capacitors (3) connected between output terminals of a solar battery (1) and single-phase inverters (5a-5c) connected in series with AC output lines of the three-phase inverter circuit (4) together constitute an inverter section, and this inverter section is connected... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100014337 - Arrangement and a method for cooling: An arrangement for cooling a high voltage converter including a major loop with a pump for making a coolant liquid to pass power semiconductor devices of the converter and a heat exchanger for lowering the temperature of the coolant liquid before passing the power semiconductor devices again. An extra loop... Agent: Venable LLP

20100014338 - Cooling and shielding of a high voltage converter: A converter for converting alternating voltage into direct voltage and vice versa in a converter station of a high voltage transmission system. A series connection of converter valves includes power semiconductor devices connected in series and arranged in superimposed layers. The valves are arranged on top of each other in... Agent: Venable LLP

01/14/2010 > patent applications in patent subcategories.

20100008105 - Dc/dc converter: The object of the invention is a high-efficiency DC/DC converter, in particular for photovoltaic plants, incorporating a transformerless DC/DC converter operated in the resonant mode of operation for converting a unipolar direct input voltage with an associated positive pole (+) and with a negative pole (−). There is imposed a... Agent: Panitch Schwarze Belisario & Nadel LLP

20100008106 - Switching control circuit, semiconductor device and switching power source apparatus: At the starting time and an overload time in which the output voltage of the switching power source apparatus is low, if an overcurrent state, in which the ON period of the switching device becomes short and a current not less than the current limit value of the switching device... Agent: Ratnerprestia

20100008107 - Dc/dc converter: A direct current-direct current (DC/DC) converter operated in the resonant mode of operation for converting a direct input voltage into a direct output voltage with a bridge circuit located on the input side and incorporating switching elements, with a resonance circuit incorporating a resonance inductance and a resonance capacitance as... Agent: Panitch Schwarze Belisario & Nadel LLP

20100008108 - Novel adaptive slope compensation method for stabilizing a continuous conduction mode converter: An embodiment of the invention relates to a power converter operable in a continuous conduction mode and a discontinuous conduction mode that includes a current-sense circuit element configured to produce a current-sense signal dependent on a current in an inductor of the power converter, and a difference circuit configured to... Agent: Slater & Matsil LLP

20100008109 - Switching power supply and semiconductor device for switching power supply: A switching power supply of the present invention includes: an oscillator circuit for oscillating a signal for turning on a switching element; an error signal generating circuit for generating an error signal having a signal level corresponding to a difference between the signal level of a feedback signal and a... Agent: Steptoe & Johnson LLP

20100008110 - Control circuit and method for a flyback power converter: A flyback power converter includes a power switch connected to a primary side of a transformer, and a sensing signal is provided for a control circuit to switch the power switch so as for the transformer to convert an input voltage into an output voltage. The sensing signal is a... Agent: Rosenberg, Klein & Lee

20100008111 - Voltage source converter station: The resistors of a filter block in a voltage source converter station are connected with a floating neutral point.... Agent: Venable LLP

20100008112 - Interphase transformer: Three single-phase interphase transformers are connected to a three-phase transformer. The three single-phase interphase transformers each contain a component for efficiently dissipating heat.... Agent: Carlson, Gaskey & Olds, P.C.

20100008113 - Semiconductor power conversion device: A surge voltage target setting unit (103) obtains a main circuit power supply voltage (VH) of a semiconductor power conversion device based on an inter-terminal voltage (Vce) of a semiconductor switching element (100) detected by a voltage detection unit (102), and sets a control target (Vm) of a surge voltage... Agent: Sughrue Mion, PLLC

20100008114 - Discontinuous protection method for clamping current in inverter: A discontinuous protection method clamps phase currents in an inverter initially sets a current clamping flag and a current threshold. The phase currents are alternatively cut out by a criterion based on the current-clamp flag and based on whether the phase currents exceed the current threshold. By proving current in... Agent: Hdls Patent & Trademark Services

20100008115 - Method and apparatus for setting a feedback power of a fundamental frequency clocked converter: A method and an apparatus for setting a feedback power of a converter clocked at a fundamental frequency on the power supply side are disclosed. The converter includes a bridge circuit equipped with controllable semiconductor switches, wherein the semiconductor switches are clocked at the fundamental frequency depending on a desired... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20100008116 - Modular control and driving device and high voltage power supply having the same for image forming apparatus: A control and driving device of a high voltage power supply (HVPS) of an electronic apparatus, such as an image forming apparatus, including an input to receive a signal supplied to the HVPS, a control and driving circuit to control and drive the signal received at the input, and an... Agent: Stanzione & Kim, LLP

20100008117 - Power supply unit having a voltage converter: The present invention concerns an electrical installation or device equipped with a power supply unit comprising a voltage converter having primary and secondary parts respectively defining a primary side and a secondary side of this electrical installation or device. This power supply unit comprises a power management unit arranged on... Agent: Griffin & Szipl, PC

20100008118 - Method for operating a converter and corresponding apparatus: A method for operating a line-side fundamental-frequency-clocked converter is disclosed. The converters has a bridge circuit with, for example three, upper and, for example three, lower semiconductor switches, which are connected to respective positive and negative terminals of a DC link circuit. Center taps of connected pairs of the upper... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20100008119 - Solar power generation stabilization system and method: A power generation system including a photovoltaic (PV) module to generate DC power is provided. The system includes a combination of a DC to DC converter and a DC to AC converter coupled to the DC to DC converter for supplying power from the PV module to a power grid.... Agent: General Electric Company Global Research

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

20100002469 - Control circuit for a buck power factor correction stage: This invention relates to a control circuit for a buck power factor correction (PFC) stage. Buck PFC stages are commonly used in low cost, high efficiency power converters. These buck PFC stages are typically controlled using a very slow control loop with a crossover frequency of the order of 10... Agent: Texas Instruments Incorporated

20100002470 - Method for maximum power point tracking of photovoltaic cells by power converters and power combiners: This invention relates to a method for Maximum Power Point Tracking (MPPT) a photovoltaic cell by a power converter that provides an output current at voltages useful to operate electronics or charge batteries. This invention also relates to a method for Maximum Power Point Tracking (MPPT) multiple photovoltaic cells by... Agent: Potter Anderson & Corroon LLP Attn: Janet E. Reed, Ph.d.

20100002471 - Phase shift full bridge converter with reduced current stress: A phase shift full bridge converter with a reduced current stress includes: a switching unit that switches an input voltage; a transformer that includes a first capacitor serially connected to, and having a primary side and a secondary side; an auxiliary circuit unit that includes a first switch, a second... Agent: Mcdermott Will & Emery LLP

20100002473 - Multiple-output dual-polarity dc/dc converters and voltage regulators: A multi-output dual polarity inductive boost converter includes an inductor, a first output node, a second output node, and a switching network, the switching network configured to provide the following modes of circuit operation: a first mode where the positive electrode of the inductor is connected to an input voltage... Agent: Advanced Analogic Technologies

20100002472 - System and method for switch mode power supply delay compensation: A delay applied to a turn-on time for a high side switch in a switch mode power converter prevents oscillation between continuous and discontinuous conduction modes under light load conditions. The delay equalizes turn-on time for a high side switch with respect to continuous and discontinuous modes, so that turn-on... Agent: Texas Instruments Incorporated

20100002474 - Switch control device and converter including the same: The present invention relates to a switch controller and a converter having the same. The converter according to the present invention includes a power transfer device that transmits input power to an output terminal as output power, a power switch connected to a first end of the power transfer device... Agent: Alston & Bird LLP

20100002476 - Apparatus and method for shaping an input signal to effect a desired output signal: An apparatus for shaping a varying input voltage signal received at an input locus to effect a desired varying output voltage signal at an output locus includes: (a) at least one energy transferring unit coupled with the input locus and with the output locus; and (b) at least one energy... Agent: Law Office Of Donald D. Mondul

20100002475 - Low voltage ride through: A system for connecting a wind turbine generator to a utility power network includes a first power converter that converts an AC signal from the wind turbine generator to a DC signal and supplies a controlled amount of reactive current to the wind turbine generator. The system also includes a... Agent: Occhiuti Rohlicek & Tsao LLP

20100002477 - Multi-phase voltage converting device, vehicle and control method of multi-phase voltage converting device: A multi-phase voltage converting device includes voltage converters each performing voltage conversion based on a control period selected from among a plurality of predetermined control periods, and a control device indicating the control period to the voltage converters. The control device updates the control period of voltage converters in a... Agent: Kenyon & Kenyon LLP

20100002478 - System to improve a voltage multiplier and associated methods: A system to improve a voltage multiplier may include a voltage multiplier circuit, and a capacitor carried by the multiplier circuit. The system may also include a transistor to charge an up voltage of the capacitor.... Agent: International Business Machines Corporation Richard Lau

20100002479 - Power supply device with power factor correction and (startup) current limitation: A power supply device, particularly for an airplane, has a control unit that is provided to match a current path to a voltage curve. An embodiment relates to a rectifier with power factor correction in the form of a step-up converter with switchable (startup) current limitation.... Agent: Posz Law Group, PLC

20100002480 - Constant current and voltage controller in a three-pin package operating in critical conduction mode: A self-oscillating flyback converter includes a controller integrated circuit housed in a 3-pin package. A switch control terminal is coupled to the base of an inductor switch that controls the current through a primary inductor of the converter. The controller IC adjusts the on time of the switch such that... Agent: Imperium Patent Works

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