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Electric power conversion systems April category listing, related patent applications 04/11

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.
04/28/2011 > 11 patent applications in 8 patent subcategories. category listing, related patent applications

20110096571 - Switching power supply unit: A control function formula which provides a relationship between an output voltage signal Vo and an output differential value with, for example, a negative linear function is defined in a calculation means. The calculation means samples an input voltage signal, an output voltage signal and an output differential signal at... Agent: Cosel Co., Ltd.

20110096572 - Low power consumption start-up circuit with dynamic switching: A start-up circuit in a switch-mode power converter that employs a Zener diode to provide a reference voltage to reduce the power consumption and the size of the start-up circuit. The start-up circuit also includes a coarse current source and a coarse reference voltage signal generator for producing current and... Agent: Iwatt Inc.

20110096573 - Control circuits and methods for switching mode power supplies: Circuits and method for sensing a system output voltage change and transmitting an electrical signal to an auxiliary winding on the primary side. In an embodiment, a primary side controller detects the electrical signal and turns a power switch on and off to transfer energy from a primary winding to... Agent: Bcd Semiconductor Manufacturing Limited

20110096574 - Switching power controller and system: A switching power controller circuit comprises a first terminal pin for a high potential of a power supply for the controller circuit, a second terminal pin for providing output of switch drive signals and for receiving feedback signals, and a third terminal pin for receiving external current signals and for... Agent:

20110096575 - Plant for transmitting electric power: A plant for transmitting electric power through HVDC comprises two converter stations interconnected by a bipolar direct voltage network and each connected to an alternating voltage network. Each converter station has a Voltage Source Converter with switching cells each including at least one energy storing capacitor. The Voltage Source Converters... Agent: Abb Technology Ag

20110096577 - Power conversion apparatus: A power conversion apparatus has a rectification circuit provided for converting AC power supplied from an AC power supply into DC power. The rectification circuit has a configuration in which series circuit whose number corresponds to the number of phases of an input AC are connected in parallel between a... Agent: Fuji Electric Holdings Co., Ltd.

20110096576 - Power factor correction device and control method thereof: Proposed are a power factor correction device and its control method capable of obtaining a stable output as the output of a power supply unit while simplifying and miniaturizing the configuration. In the power factor correction device and the control method thereof including a coil and a switching element, and... Agent: Hitachi Computer Peripherals Co., Ltd.

20110096578 - System and method for synchronous rectifier: A synchronous rectification circuit for a power converter includes a power switch coupled to a transformer and an output capacitor and a switching control circuit configured to provide a control signal to the power switch in response to a first state and a second state of the voltage across the... Agent: Bcd Semiconductor Manufacturing Limited

20110096579 - Dc bus voltage control for two stage solar converter: Systems, methods, and apparatus for supplying AC power to an AC power grid from a DC power source, such as a photovoltaic (PV) array are disclosed. The systems and methods can include a converter coupled to the DC power source that provides DC power to a DC bus at a... Agent: General Electric Company

20110096581 - Inverter and method for operating the inverter: An inverter for converting a DC input voltage to an AC output voltage with an H-bridge is provided. A storage choke circuit is provided between the H-bridge and output-side AC voltage terminals. The storage choke circuit includes a freewheeling path with a freewheeling diode for commutating the current after a... Agent:

20110096580 - Voltage source converter: A Voltage Source Converter of M2LC-type has a series connection of switching cells (7), in which each switching cell has on one hand at least two semiconductor assemblies connected in series and having each a semiconductor device of turn-off type and a free-wheeling diode connected in parallel therewith and on... Agent:

04/21/2011 > 13 patent applications in 12 patent subcategories. category listing, related patent applications

20110090714 - Output apparatus to output a vital output from two sources: An output apparatus includes a first source of a first signal having a first state or a different second state; a second source of a second signal having a first state or a different second state; and a circuit structured to output a vital output including a first state when... Agent:

20110090715 - Isolated switching power supply apparatus: A transformer includes a first secondary winding, a second secondary winding, and a third secondary winding. The second secondary winding and the third secondary winding are wound to include the same number of turns and to have opposite magnetic polarities. A low-pass filter includes a second inductor defined by a... Agent: Murata Manufacturing Co., Ltd.

20110090716 - Dc-dc converter with snubber circuit: In order to achieve an object to reduce a surge voltage and suppress noise generation, the present invention provides a DC-DC converter with a snubber circuit, which boosts a voltage Vi of a DC power supply. The snubber circuit includes: a series circuit connected to both ends of a smoothing... Agent: National University Corporation Shimane University

20110090717 - Two-stage insulated bidirectional dc/dc power converter using a constant duty ratio llc resonant converter: A two-stage insulated bidirectional DC/DC power converter is disclosed. A two-stage insulated bidirectional DC/DC power converter according to an embodiment of the invention has the characteristic of including: an LLC resonant converter operating at a constant duty ratio; a bidirectional converter joined to a front part of the LLC resonant... Agent: Orient Electronics Inc.

20110090718 - Switching power supply device: The present invention has as an object to introduce a switching power supply device having a simple circuit structure and controlling a secondary-side output voltage in a highly-accurate and stable manner. The switching power supply device includes: an auxiliary winding resetting detecting circuit which is connected to the auxiliary winding,... Agent: Panasonic Corporation

20110090719 - Rf isolation for power circuitry: System and method for providing isolated power to a component that is also subject a set of RF signals that includes at least a first RF signal having a first RF frequency is provided. There is included providing a DC voltage signal and modulating the DC voltage signal into an... Agent:

20110090720 - Unit inverter system: In a unit inverter system where multiple unit inverters are connected in parallel, the quantity of operating unit inverters is determined in accordance with an amount of power to be converted. A gate signal of a semiconductor switching element of a unit inverter is turned off after an output current... Agent: Fuji Electric Holdings Co., Ltd.

20110090721 - Capacitive matrix converters: A direct current (DC) to DC converter, including: input ports for receiving an input DC voltage; output ports for outputting an output DC voltage; a first matrix of capacitors and switches; a second matrix of capacitors and switches; and a control circuit, coupled to the switches of the first and... Agent: Ramot At Tel-aviv University Ltd.

20110090722 - Voltage converter: A switched capacitor DC-DC voltage converter comprising: a first circuit (21) having a plurality of switches (M1-M4); and a second circuit (22) having a plurality of capacitors (C1, C2, C3), each capacitor connected to one or more of the plurality of switches, wherein the first and second circuits are provided... Agent: Nxp B.v.

20110090723 - Contactless power receiver and method of operation: A contactless power receiver is provided with a dynamically tuned pick up coil. The power transfer capacity of this power receiver is dynamically tuned using semiconductor devices that are operated in linear mode over part of their operation. The semiconductor devices are driven by a controller that is configured to... Agent: Powerbyproxi Limited

20110090724 - power converter: An isolated power converter comprising a transformer arranged in such a way that the mirrored primary voltage on the secondary side has a positive potential relative to ground, said converter comprising a derivating net arranged to cause the second transistor to conduct in dependence of the voltage across the secondary... Agent:

20110090725 - Systems and methods of synchronous rectifier control: Systems and methods for synchronous rectifier control are provided. A synchronous rectifier includes parasitic drain inductance and parasitic source inductance. Compensation inductance is introduced to offset the effects of parasitic inductance. Compensation inductance may be formed from the trace inductance on the semiconductor die. In certain semiconductor packages, the parasitic... Agent: Texas Instruments Inc

20110090726 - Portable alternating current inverter having reduced impedance losses: A portable power supply apparatus is provided having reduced impedance losses. The portable power supply apparatus is comprised of: a portable housing; a battery system residing in the housing; and an inverter circuit residing in the housing. The battery system generates a direct current (DC) voltage having a magnitude greater... Agent: Black & Decker Inc.

04/14/2011 > 10 patent applications in 10 patent subcategories. category listing, related patent applications

20110085354 - Burst mode resonant power converter with high conversion efficiency: A burst mode resonant power converter with high conversion efficiency has a rectifier, a power factor correction circuit, a resonant circuit, a controller, and a burst mode triggering unit. The maximum frequency switching end of the controller is connected to a maximum frequency variable circuit. When the load is medium... Agent: Acbel Polytech Inc.

20110085355 - Control device for resonant converters: A control device for a switching circuit of a resonant converter having a direct current at the output, the switching circuit having at least one half bridge of at least first and second transistors connected between an input voltage and a reference voltage. The half bridge is adapted to generate... Agent: Stmicroelectronics S.r.l.

20110085356 - Switching element driving control circuit and switching power supply device: A switching element driving control circuit includes: a regulator circuit which generates a power supply voltage having an amplitude; a capacitor which smoothes the power supply voltage generated by the regulator circuit to remove a high frequency component; a circuit power supply line to which the smoothed power supply voltage... Agent: Panasonic Corporation

20110085357 - Flyback power supply with forced primary regulation: A flyback converter controller with forced primary regulation is disclosed. An example flyback converter controller includes a secondary control circuit to be coupled to a switched element coupled to a second winding of a coupled inductor of a flyback converter. The secondary control circuit is to be coupled across an... Agent: Power Integrations, Inc.

20110085358 - Method and apparatus for high-side input winding regulation: A power supply control circuit for use in a power supply is disclosed. An example power supply control circuit includes a power switch coupled between first and second terminals. The first terminal is to be coupled to a positive input supply rail of the power supply. The second terminal is... Agent: Power Integrations, Inc.

20110085359 - Adaptive frequency jitter for controller: In order to convert an input power to one or more DC power levels that are provided to an output load, some aspects of the present disclosure relate to techniques for driving a switching regulator as a function of a pulsed voltage signal. In particular, this pulsed voltage signal is... Agent: Infineon Technologies Ag

20110085360 - Method and apparatus providing a multi-function terminal for a power supply controller: A power supply controller circuit is disclosed. An example power supply controller circuit includes a control circuit coupled to generate a switching waveform to be used to regulate an output of a power supply. A current input circuit is coupled to receive a current representative of an input of the... Agent: Power Integrations, Inc.

20110085361 - Method of and apparatus for controlling converter: Controlled by switching is which reactor in a reactor group present between a power source and a three-level converter is to be connected to an intermediate point that outputs a midpoint potential. In the switching, the closer to the command value of the midpoint potential the command values of input... Agent: Daikin Industries, Ltd.

20110085362 - Drive unit, for instance for halogen lamps, and corresponding method: A drive unit for electrical loads is provided. The drive unit may include an insulating transformer having a secondary winding for an alternate current to flow therethrough, wherein said secondary winding of said insulating transformer is coupled to electronic switches in a synchronous rectifier arrangement, said electronic switches to be... Agent: Osram Gesellschaft Mit Beschraenkter Haftung

20110085363 - Power electronics and integration system for providing a common high current inverter for use with a traction inverter and an auxiliary inverter: A system for using an IGBT module, electrically rated for use in a traction inverter used with a powered system, in an auxiliary inverter used with the powered system which requires a different electrically rated IGBT module than the traction inverter, the system including an IGBT module, including plurality of... Agent:

04/07/2011 > 8 patent applications in 7 patent subcategories. category listing, related patent applications

20110080755 - Power supply with synchronized clocks and related dc-dc converter: A power supply with synchronized clocks includes a transformer for transforming an AC input voltage into a DC input voltage, a delay unit for delaying phase of a standard clock signal to generate a plurality of synchronization clock signals, a major DC-DC converter for adjusting voltage level and phase of... Agent:

20110080756 - Modified zero voltage transition (zvt) full bridge converter and photovoltaic (pv) array using the same: The present invention, a modified zero voltage transition (ZVT) full bridge converter, is an isolated dc/dc converter which can operate with high efficiency and high reliability in applications requiring a low input voltage and high output voltage.... Agent:

20110080757 - power converter: The present invention relates to a power converter (90) and a method of operating same. There are numerous advantages to operating power converters using a series resonant converter (1, 21). This approach is particularly suitable for minimising switching losses in the power converter when it is operated at high frequency.... Agent:

20110080758 - Plant for transmitting electric power: A plant for transmitting electric power comprises a direct voltage network for High Voltage Direct Current and at least one alternating voltage network connected thereto through a station. The station comprises at least one Voltage Source Converter adapted to convert direct voltage into alternating voltage and conversely. In the direct... Agent: Abb Technology Ag

20110080759 - Feeding system for an inductive load from an energy source with variable power: A system is provided for the feeding of an inductive load, with electric power of continuous current, generated from an energy source and, more in particular, to a feeding system for a vibratory pump from solar or aeolic energy, which processes the electric power of continuous current supplied by a... Agent: Industria De Motores Anauger S.a.

20110080761 - Monolithic ac/dc converter for generating dc supply voltage: An integrated circuit (IC) comprises a rectifier/regulator circuit coupled to receive an ac source voltage and output a regulated dc voltage. The rectifier/regulator circuit includes first and second switching elements that provide charging current when enabled. The first and second switching elements do not provide charging current when disabled. A... Agent: Power Integrations, Inc.

20110080760 - Rectifier driving circuit: A rectifier driving circuit of the present invention, has a first driving element and a second driving element, switching element comprises a FET, a first driving element comprises the voltage drop resistor, a second driving element comprises the series-connected circuit of the diodes, the driving element for driving a FET,... Agent:

20110080762 - Electronic device control system and method: There is provided a system and method of operating a plurality of inverters that provide power via a plurality of switches. An exemplary method includes determining an inverter firing pattern corresponding to one of a plurality of regions of an inverter firing cycle, the inverter firing pattern defining whether each... Agent: General Electric Company

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