|Electric power conversion systems patents - Monitor Patents|
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Electric power conversion systems February patent applications/inventions, industry category 02/12Below 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. 02/23/2012 > 16 patent applications in 13 patent subcategories. patent applications/inventions, industry category
20120044719 - Control device for the voltage- absent switching of a switching element of a voltage converter: In a control device (28) for the voltage-absent switching of at least one switching element (18-24) of a voltage converter (10), a detection element (30) detects a resonance voltage between the switching element (18-24) and the transformer unit (14). A control unit (34) generates a control signal for the switching... Agent:
20120044718 - Power converters: A power converter for delivering power to a load at a regulated voltage 11 includes a regulating stage receiving an unregulated supply 10 and having a main transformer 18. Switches 16a and 16b are arranged in a half-bridge connect the transformer primary 17 to the unregulated supply 10 to drive... Agent: Texas Instruments Incorporated
20120044717 - Transformer-isolated switching converter: Exemplary systems and methods provide a transformer-isolated current-fed quadratic full-bridge converter topology. The optimal interfacing of a current source, such as a solar panel, can be implemented by using current-fed converters. The current-fed converter can operate within the whole range of a UI curve from short-circuit to open-circuit condition and... Agent: Abb Oy
20120044721 - Series resonant converter using power switches with relatively low rated voltages and currents: The present invention is to provide a series resonant converter, which includes a transformer, two power switches connected to primary side of the transformer, a resonant control chip having two control pins connected to gates of the two power switches respectively, a resonant capacitor having one end connected to one... Agent: Skynet Electronic Co., Ltd.
20120044722 - Isolated switching converter: The isolated voltage step-down switching DC-DC converter has one magnetic component, the isolation transformer, and two small size resonant inductors. The transformer is built on a magnetic core with no air-gap, hence no DC storage and thus results in fast load transient response. Two active switches on the primary side... Agent:
20120044720 - Semiconductor device and method of forming low voltage mosfet for portable electronic devices and data processing centers: A semiconductor device has a well region formed within a substrate. A gate structure is formed over a surface of the substrate. A source region is formed within the substrate adjacent to the gate structure. A drain region is formed within the substrate adjacent to the gate structure. A first... Agent: Great Wall Semiconductor Corporation
20120044723 - Systems and methods for reducing standby power consumption of switch-mode power converters: Power conversion system and method. The system includes a first capacitor including a first capacitor terminal and a second capacitor terminal, a second capacitor including a third capacitor terminal and a fourth capacitor terminal, and a plurality of diodes including a first diode, a second diode, a third diode, and... Agent: On-bright Electronics (shanghai) Co., Ltd.
20120044724 - Switching power supply apparatus: A switching power supply apparatus that can precisely control the overload protection voltage is provided. The apparatus includes a secondary current on-period detection circuit for detecting the time between turn-off of the switching device and off-timing of the secondary current; and an output power limiting circuit for comparing the output... Agent: Panasonic Corporation
20120044725 - Boost-buck power factor correction: A power factor correction circuit responsive to an input power supply signal at an input supply voltage is described. The circuit includes rectifier circuitry for largely performing full-wave rectification on the input supply signal to produce a full-wave rectified supply signal at a full-wave rectified voltage and a full-wave rectified... Agent:
20120044726 - Method and an apparatus for controlling the output voltage of a boost converter: The present invention concerns a method for controlling an output voltage of a boost converter composed of n bridge devices connected in series, each bridge device being composed of plural switches and a capacitor, the switches being controlled by periodical patterns decomposed in time intervals. In each time interval of... Agent: Mitsubishi Electric Corporation
20120044727 - Method and circuit arrangement for supplying a multiphase electrical network: In a method for supplying a multiphase electric network (17) by means of an electric generator (1) of a regenerative power source, the generator being connected to the network (17) via a converter (4 to 12), by which the amplitude of the fed current and the phase angle thereof relative... Agent: Powerwind Gmbh
20120044729 - Bridgeless coupled inductor boost power factor rectifiers: A bridgeless power factor correction system may include an AC input having a first input terminal and a second input terminal, an inductor module coupled with the first input terminal, and a switching module coupled between the second input terminal and the inductor module. The switching module may comprise a... Agent: Microsemi Corporation
20120044728 - Electric power converter: In aspects of the invention, first and second series circuits of switching devices and a series circuit of capacitors are connected in parallel. Between the connection point in the first series circuit of switching devices and the connection point in the series circuit of capacitors, a first bidirectional switch is... Agent: Fuji Electric Co., Ltd.
20120044730 - Line and neutral point clamped inverter: Exemplary embodiments are directed to an inverter and a method for controlling an inverter. The inverter includes a DC link having two capacitor units in series and a neutral point between the capacitor units, and a first and a second inverter leg. Both inverter legs are connected between the poles... Agent: Abb Oy
20120044731 - Method and apparatus for boosting dc bus voltage: A power converter includes at least two power conversion sections operating in parallel. The power converter receives a variable input power and generates an AC output voltage. When the power source is generating enough power to supply a DC voltage to the power converter greater than or equal to the... Agent:
20120044732 - Isolated epitaxial modulation device: An isolated epitaxial modulation device comprises a substrate; a barrier structure formed on the substrate; an isolated epitaxial region formed above the substrate and electrically isolated from the substrate by the barrier structure; a semiconductor device, the semiconductor device located in the isolated epitaxial region; and a modulation network formed... Agent: Intersil Americas Inc.02/16/2012 > 12 patent applications in 9 patent subcategories. patent applications/inventions, industry category
20120039092 - Current-input-type parallel resonant dc/dc converter and method thereof: A current-input-type parallel resonant DC/DC converter and a method thereof are provided. The converter includes an inverter-circuit for inverting/converting an input DC current into a positive-and-negative alternating square-wave-current, a resonant-network for converting the square-wave-current into a sine-voltage, a transformer for realizing the isolation of the power transmission, a full-wave rectifier-circuit... Agent: Fsp-powerland Technology Inc.
20120039093 - Systems and methods for off-time control in a voltage converter: Various embodiments of the present invention provide voltage converters and methods for using such. As one example, a voltage converter is disclosed that includes a transformer with a first winding and a second winding. A voltage is applied to the first winding for a period that is followed by an... Agent: Texas Instruments Incorporated
20120039095 - Boost converter: There is provided a boost converter capable of reducing internal pressure in elements without the employment of a separate snubber by clamping a voltage, transmitted to the elements, to a charging voltage or an output voltage during power conversion. The boost converter includes a transformer including a primary winding receiving... Agent: Samsung Electro-mechanics Co., Ltd.
20120039094 - Interleaved type power factor correction circuit having transformer forming separated winding structure: There is provided an interleaved type power factor correction circuit having a transformer forming a separated winding structure, which is formed by integrating two inductors separately wound around the transformer. The interleaved type power factor correction circuit including a rectifying unit rectifying a commercial alternating current power, a transformer having... Agent: Samsung Electro-mechanics Co., Ltd.
20120039096 - High voltage startup circuit: In one embodiment, a startup circuit for a power supply is provided. The startup circuit comprises a resistance coupled between a voltage source and a first node. A first capacitor, coupled to the first node, is operable to be charged by current flowing through the resistance. A first transistor has... Agent:
20120039097 - Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controller: An example controller for a power converter includes a switching control coupled to switch a power switch of the power converter to control a transfer of energy from an input of the power converter to an output of the power converter. A sensor is coupled to sample a single terminal... Agent: Power Integrations, Inc.
20120039098 - Controller for a power converter and method of operating the same: A controller for a power converter and method of operating the same. In one embodiment, the controller includes a peak detector, coupled to a circuit element of the power converter, configured to produce a signal corresponding to a peak current through a circuit element. The controller also includes an adjustable... Agent: Power Systems Technologies, Inc.
20120039099 - Power conditioning unit: The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting directly to a grid utility supply, or for powering mains devices independent from the mains utility supply. We describe... Agent: Enecsys Limited
20120039100 - Power conversion device, method of controlling power conversion device, and vehicle with the same mounted thereon: In a power conversion device of a vehicle, when a collision of a vehicle is detected, the voltage of a gate signal that drive a semiconductor switching element included in the power conversion device is decreased, and residual charge stored in a smoothing capacitor is discharged. Such a configuration increases... Agent: Toyota Jidosha Kabushiki Kaisha
20120039101 - Method of and apparatus for connecting a photovoltaic device to an ac power grid: A method of connecting a photovoltaic device to an AC power grid through an inverter includes monitoring a DC voltage at an input of an inverter, and activating the inverter when the monitored DC voltage exceeds a first predetermined threshold. The method further includes synchronizing an output voltage of the... Agent: Sma Solar Technology Ag
20120039102 - Wireless power transfer terminal: This disclosure provides a wireless power transfer terminal that enables a power device to be used for both power transmission and power reception and allows space savings of circuits and a reduction in the cost of manufacturing. The wireless power transfer terminal includes first through fourth switching elements, a coil,... Agent: Murata Manufacturing Co., Ltd.
20120039103 - Single-stage ac/dc converter: A single-stage AC/DC converter is provided, and which includes a power-frequency follow-current circuit, an isolated transmission circuit (ITC), a high-frequency chopper modulation circuit (HFCMC), a power-frequency and high-frequency AC rectifying-circuit and a filter-circuit. The input of the ITC is connected to the output of an external power-frequency power source, the... Agent: Fsp-powerland Technology Inc.02/09/2012 > 28 patent applications in 19 patent subcategories. patent applications/inventions, industry category
20120033449 - Control for an electrically adjustable piece of furniture: A control module includes a control unit that is configured to control an electrically adjustable item of furniture, and a switched mode power supply that is configured to supply the control unit. The control unit and power supply are integrated into a common housing. The switched mode power supply is... Agent: Logicdata Electronic & Software Entwicklungs Gmbh
20120033450 - Multiple power supplies balance system: A multiple power supplies balance system includes a plurality of power supply circuits on a circuit board each having a power output route. Each power supply circuit includes a power supply feedback unit which has a reference level terminal to determine output potential of the power supply circuit. The circuit... Agent:
20120033453 - Controller for a resonant switched-mode power converter: In accordance with an embodiment, a switch controller for a switched-mode power supply includes an oscillator, an advance timing generator, and a dead zone generator. The advance timing generator generates an advance timing output pulse having a first pulse width that is asserted when the oscillator reaches a first phase.... Agent: Infineon Technologies Ag
20120033451 - Converter: A converter includes a rectifying circuit of an AC voltage of an AC power source into a rectified voltage, an input smoothing capacitor Ci, a first series circuit connected to the input smoothing capacitor and including a first and a second switching elements, a second series circuit connected to a... Agent: Sanken Electric Co., Ltd.
20120033452 - Dc/dc converter: The present invention relates to a DC/DC converter (1) with primary side (11) consisting of a resonant converter, which DC/DC converter (1) comprises a first and a second transformer (T1, T2), connected in series on the primary side (11) and on the secondary side (12) of the DC/DC converter. The... Agent: Huawei Technologies Co., Ltd.
20120033454 - Switching power supply apparatus: A resonance-type power supply is provided in which no short circuit occurs and driving is performed with a constant switching period by performing switching control using a change of magnetic flux of a magnetic component as a trigger. When the change of magnetic flux of the transformer is detected, the... Agent: Murata Manufacturing Co., Ltd.
20120033455 - Switching power supply apparatus: In a switching power supply apparatus, a comparator outputs a first determination criterion signal based on a saw-tooth wave signal whose level fluctuates with a constant period and a detection voltage signal. An inverter subjects the first determination criterion signal to reverse processing, and outputs a second determination criterion signal.... Agent: Murata Manufacturing Co., Ltd.
20120033456 - Active clamp dc-dc converter: An active clamp DC-DC converter includes a transformer having a primary coil and a secondary coil, a main switching device connected in series to the primary coil of the transformer so that the main switching device and the primary coil are connected in parallel to a DC power source, a... Agent: Kabushiki Kaisha Toyota Jidoshokki
20120033457 - Hold-up time extending circuit and converter including the same: The hold-up time expansion circuit controls switching frequency of at least one switch according to the input voltage of the converter. The converter is dependent on the switching frequency that is controlled by the hold-up time expansion circuit, and controls the duty of at least one switch according to the... Agent:
20120033458 - System and method for power conversion: A system and method for operating power supplies. A method comprises altering a current sense (CS) signal, turning off a switch of the converter in response to a determining that the CS signal is greater than or equal to a first threshold, and leaving on the switch of the converter... Agent:
20120033459 - Circuit regulator and synchronous timing pulse generation circuit thereof: A circuit regulator is used to generate a pulse-width-modulation signal, so as to control a power to be selectively input or not input to a primary side of a switching power supply. The circuit regulator includes a synchronous timing pulse generation circuit, outputs a starting pulse after performing signal process... Agent: Macroblock, Inc.
20120033460 - High-side synchronous rectifier circuits and control circuits for power converters: A control circuit for a switching power converter is provided. The control circuit is installed between a secondary side and an output of the power converter and coupled to control a switching device. The control circuit includes a linear predict circuit, a reset circuit, a charge/discharge circuit, and a PWM... Agent: System General Corporation
20120033461 - Controlling a high-voltage direct-current (hvdc) link: The present disclosure is directed to a High Voltage Direct Current (HVDC) link with Voltage Source Converters VSC and interconnecting two power systems. A model-predictive control with a receding horizon policy is employed for controlling the outer loop of a two-loop or two-layer control scheme or setup for the HVDC... Agent: Abb Research Ltd
20120033463 - Power conditioning unit: The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting directly to a grid utility supply, or for powering mains devices independent from the mains utility supply. We describe... Agent: Enecsys Limited
20120033462 - Power flow control in a meshed hvdc power transmission network: A meshed HVDC power transmission network comprises at least three HVDC converter stations interconnected in a first closed path by at least three transmission lines. A first DC power flow control device is series connected to a first of the at least three transmission lines. That first DC power flow... Agent:
20120033464 - Universal power converter: Methods and systems for transforming electric power between two or more portals. Any or all portals can be DC, single phase AC, or multi-phase AC. Conversion is accomplished by a plurality of bi-directional conducting and blocking semiconductor switches which alternately connect an inductor and parallel capacitor between said portals, such... Agent: Ideal Power Converters, Inc.
20120033466 - Partial power micro-converter architecture: A system and method for reducing the amount of power processed in a power converter during power generation is provided. In one aspect, the system includes a partial power converter connected between a set of power sources and a load. The partial power converter includes a primary power converter coupled... Agent: Intersil Americas Inc.
20120033467 - Switching mode power supply and method of controlling the same: A switching mode power supply (SMPS) includes at least one transformer, a switching unit to switch a voltage applied to the at least one transformer, a snubber circuit connected to the switching unit, a first switch to control an on or off operation of the snubber circuit, and a second... Agent: Samsung Electronics Co., Ltd
20120033468 - Power conversion systems: In a general aspect, a power conversion system includes a power converter, a transformer, and a voltage adjustment device. The power converter is configured to receive a variable DC power generated by a power generation device and to convert the received DC power to AC power at a first voltage.... Agent: American Superconductor Corporation
20120033469 - Electric power conversion system having an adaptable transformer turns ratio for improved efficiency: An electric power conversion system has an adaptable transformer turns ratio for improved efficiency. The transformer has multiple taps on its primary. Switching circuitry is configured to connect an energy source to the taps in at least two modes such that the transformer operates with a first primary-to-secondary turns ratio... Agent:
20120033470 - Method of controlling power conversion device: A correction-term adder 1 compares a maximum value max(V*) with an absolute value of a minimum value min(V*). The correction-term adder 1 selects a signal 1−max(V*) when the maximum value max(V*) is larger than the absolute value of the minimum value min(V*), on the other hand, selects a signal −1−min(V*)... Agent: Meidensha Corporation
20120033471 - Two-wire dimmer switch for low-power loads: A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first... Agent: Lutron Electronics Co., Inc.
20120033472 - Multi-phase drive system: A drive system for driving a multi-phase motor (such as a three-phase AC motor) or other load. Where a transformer is used, the transformer may have a disconnected wye configuration on the secondary side. The system may also utilize the average or other combination of DC bus voltages of inverters... Agent: Toshiba International Corporation
20120033474 - Highly efficient half-bridge dc-ac converter: The invention relates to a DC to AC converter circuit. In particular, the invention relates to a half-bridge inverter for converting a DC to an AC voltage. The half-bridge inverter for converting a DC input voltage to provide an AC output voltage at an output terminal, comprising a first switching... Agent: Vincotech Holdings S.a.r.l.
20120033475 - Power conversion apparatus: Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module... Agent: Hitachi, Ltd.
20120033473 - Systems and methods for electrical power grid monitoring using loosely synchronized phasors: The present disclosure describes systems and methods for monitoring an electrical power grid using loosely synchronized phasors. The grid can include a phasor measurement unit (PMU) that keeps a highly-accurate time, such as a time provided by GPS signals. A solar power inverter can include a clock that is synchronized... Agent:
20120033476 - Inverter circuit, power converter circuit, and electric vehicle: An object is to reduce, with the control circuit of the full-bridge inverter circuit, distortions in an output signal of the inverter circuit resulting from an error in control of the switching of the high-side transistors and low-side transistors included in the first half-bridge circuit and the second half-bridge circuit.... Agent: Semiconductor Energy Laboratory Co., Ltd.02/02/2012 > 18 patent applications in 15 patent subcategories. patent applications/inventions, industry category
20120026756 - Control circuit, control method, and power supply device: A control circuit, a control method, and a power supply device are provided. The control circuit includes an obtaining sub-circuit, adapted to obtain a voltage signal from a reverse surge current when the reverse surge current appears on a primary side of a switch power circuit of a synchronous rectification... Agent: Huawei Technologies Co., Ltd.
20120026754 - Double phase-shifting full-bridge dc-to-dc converter: A DC-to-DC converter has a leading full-bridge inverter and a lagging full-bridge inverter for receiving a DC input and producing respective AC output voltages. A full-wave rectifier circuit rectifies the AC output voltages to produce a rectified output voltage, which is filtered by a current doubling output filter circuit to... Agent: Texas Instruments Incorporated
20120026755 - 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: Delta Electronics, Inc.
20120026757 - Converter controller: Provided is a converter controller capable of preventing destruction of an element such as an auxiliary switch by preventing operation interference between auxiliary circuits of respective phases in a multiphase soft switching converter. A duty threshold input unit receives, as an input, an obtained acceptable duty deviation value. A duty... Agent: Toyota Jidosha Kabushiki Kaisha
20120026758 - Apparatus and method for controlling switch of flyback converter for solar generating system: There is provided an apparatus and method for controlling a switch of a flyback converter for a solar generating system. The apparatus for controlling a switch of a flyback converter for a solar generating system includes: an MPPT controller generating a current command value for a maximum power point tracker... Agent: Samsung Electro-mechanics Co., Ltd.
20120026759 - Ultra low standby consumption in a high power power converter: A power converter with low power consumption during a standby operating condition. An example power controller includes a main converter coupled to a dc input of the power converter to control a transfer of energy from the dc input of the power converter to a main output of the power... Agent: Power Integrations, Inc.
20120026760 - Dc voltage compensation in a multi-terminal hvdc power transmission network: In a multi-terminal HVDC power transmission network comprising at least three HVDC converter stations interconnected by at least two transmission lines, where at least one of the transmission lines is a long line, an active voltage source device is series connected to one of the transmission lines, which maintains the... Agent: Abb Technology Ag
20120026761 - Adaptive current limiter and dimmer system including the same: In an embodiment, an adaptive current limiter includes a sense element, a current pass element, and a controller. The sense element includes a first sense terminal coupled to a power supply terminal and a second sense terminal. The sense element generates a sense voltage in response to a feedback current.... Agent:
20120026762 - Pre-bias control for switched mode power supplies: An embodiment of the invention provides a method of reducing a drop in voltage on a pre-biased output of a DC-DC step-down switching converter. A high side switch is activated to conduct a first current to the pre-biased output. After the high side switch is activated, a low side switch... Agent: Texas Instruments Incorporated
20120026763 - Energy-efficient standby mode in a switching power supply: A switching power supply includes power factor correction circuitry and a standby output converter. One or more loads may be coupled to one or more outputs of the switching power supply. The switching power supply is configured to disable the power factor correction circuitry under some load conditions and to... Agent:
20120026764 - Control system for high-efficiency operation in parallel inverter installations: A control system for parallel connected inverter legs energized by a power source and configured for servicing a load is disclosed. The invention facilitates the number of running inverter legs to adaptively react to changes in the load by dynamically switching various inverter legs “on” or “off” in response to... Agent:
20120026765 - Control device of a switching power supply: A control device controls a switching converter having an input alternating supply voltage and a regulated direct voltage at the output terminal. The converter comprises a switch and the control device is adapted to control the on time period and the off time period of said switch for each cycle.... Agent: Stmicroelectronics S.r.l.
20120026766 - Control device of a switching power supply: A control device controls a switching converter that converts an alternating supply voltage to a regulated voltage and comprises a switch connected to an inductor. The control device is adapted to control the on period and the off period of said switch for each cycle. The control device comprises a... Agent: Stmicroelectronics S.r.l.
20120026767 - Power conversion device: A power conversion device connected with a three-phase power system through a transformer, including unit converters cascade-connected so that reactors are unnecessary, and volume and weight are reduced. The secondary winding of the transformer is an open winding having six terminals. A first converter group, includes a circuit which has... Agent:
20120026768 - Facility power supply with power-factor correction: An embodiment of a power supply includes an input node, a converter stage, and an outlet. The input node is operable to receive an input AC signal having peak portions and non-peak portions. The converter stage is operable to generate a DC power signal from the input AC signal and... Agent: Sts, Inc.
20120026769 - Photovoltaic inverter system and method of starting same at high open-circuit voltage: A power inverter system includes a DC to AC inverter configured to convert DC voltage from a DC power source to AC voltage. A DC link couples the DC power source and the inverter. An inverter pre-charger operates to pre-charge the inverter to achieve a desired DC link voltage prior... Agent: General Electric Company
20120026770 - Power converter with linear distribution of heat sources: A power converter design is disclosed with a novel approach to thermal management which enhances the performance and significantly reduces the cost of the converter compared to prior art power converters. The invention minimizes the heating of one power component by another within the power converter and therefore enables the... Agent: Renewable Power Conversion, Inc.
20120026771 - Vehicle-use power supply control apparatus and control apparatus for controlling electric rotating machine mounted on vehicle as main engine: The vehicle-use power supply control apparatus is for controlling transmission of electric power between a vehicle-mounted power supply apparatus including switching elements turned on and off in accordance with manipulation signals and an external power supply located outside the vehicle. The vehicle-use power supply control apparatus includes a control section... Agent: Denso CorporationPrevious industry: Illumination
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