Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems November recently filed with US Patent Office 11/11

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.
11/24/2011 > 11 patent applications in 10 patent subcategories. recently filed with US Patent Office

20110286243 - Isolated feedback system for power converters: An isolated feedback system for power converters includes an error amplifier for receiving an input voltage to output an error signal; a modulator circuit to modulate the error signal with a carrier signal; an acoustic transformer unit, one end of the acoustic transformer connected to the modulator circuit, where a... Agent: Neoenergy Microelectronics, Inc.

20110286244 - Adjustable speed drive lifetime improvement method: The present techniques include methods and systems for operating an inverter to maintain a lifespan of the inverter. In some embodiments, the switching frequency and/or the output current of the inverter may be changed such that stress may be reduced on the inverter bond wires of the inverter. More specifically,... Agent: Rockwell Automation Technologies, Inc.

20110286245 - Dc/dc power converter having active self driving synchronous rectification: A DC/DC voltage converter includes a transformer having a primary side and a secondary side. Primary side circuitry is connected to the primary side and includes a first pair of switching transistors controlled responsive to first control signals from the primary side of the transformer and receiving an input voltage.... Agent: Intersil Americas Inc.

20110286246 - Electric power converter: An electric power converter facilitates performing soft switching in the two-way electric-power-conversion operation thereof, and reducing the manufacturing costs thereof and the losses caused therein, The electric power converter includes a first switching device; a second switching device; a first series circuit including capacitor, a diode, the primary winding of... Agent: Fuji Electric System Co., Ltd.

20110286247 - Sensing arrangements: A sensing arrangement and method a sense winding is used to provide a voltage which represents the voltage appearing across an in-circuit magnetic component. In a flyback phase, when the component is supplying the output, that voltage represents an output voltage and in a supply phase, the supply voltage. This... Agent: Texas Instruments (cork) Limited

20110286248 - Adaptive control for transition between multiple modulation modes in a switching power converter: In a switching power converter, PWM mode and PFM mode are separated into two independent control sections with the control voltage range in each control section determined independently. Each of the PWM and PFM modulation modes cannot operate continuously beyond its boundaries, thereby forming a control gap between the two... Agent: Iwatt Inc.

20110286249 - Method and device of electrical power: A power factor correction of three-phase boost-type conversion is disclosed. Embodiments comprising multi-leg autotransformers are disclosed, e.g. comprising 3-phase low-pass filtering impedances such as capacitors between an input of a converter and a midpoint of the output.... Agent: Huawei Technologies Co., Ltd.

20110286250 - Power adaptation device and power supply management method: A power adaptation device and a power supply management method thereof are provided. The power adaptation device includes a terminal seat, a detection structure, a detection unit, an electric power modulation unit, an electric power modulation unit, and a control unit. The power supply management method includes the following steps.... Agent: Advanced Connection Technology, Inc.

20110286251 - Power supply device: A power supply device includes: a magneto generator with a rotor having a magnet; a torque supplying device supplying torque to the rotor; a rectifier circuit supplying electric power to a electrical load device by rectifying an output of the magneto generator; a short circuit electrically shorting an output end... Agent: Mitsubishi Electric Corporation

20110286252 - T-type three-level inverter circuit: This invention relates to a T-type three-level inverter circuit. The circuit includes an absorption unit. In the absorption unit, a first terminal of the first resistor is connected to a positive bus terminal, and a second terminal of the first resistor is connected to a first terminal of the first... Agent: Liebert Corporation

20110286253 - Three-phase inverter circuit and method for operating a three-phase inverter circuit: A three-phase inverter circuit includes an inverter comprising a plurality of controllable power switches, and an electronic control device adapted to control the power switches. The control device in the event of a measured voltage drop on one phase is adapted to supply a reactive current on the phase with... Agent: Fecon Gmbh

11/17/2011 > 10 patent applications in 9 patent subcategories. recently filed with US Patent Office

20110280047 - Switching power adaptor circuit: An improved structure for a switching power adaptor circuit, primarily providing a switching power adaptor circuit for a RCC (Ringing Choke Converter) system, in which a control circuit is mainly structured from a bipolar junction transistor, a stable voltage sensing circuit, an over current protection circuit and an over voltage... Agent: Eng Electronic Co., Ltd.

20110280048 - Dc-dc converter circuit: This DC-DC converter circuit includes a switching circuit which switches a DC power supply with a primary side switching element, a transformer to a primary side winding whereof the output of the switching circuit is applied and which outputs a voltage which has been changed by a predetermined voltage change... Agent:

20110280049 - Power converting apparatus: A power converting apparatus is configured with single-phase sub-converters (4) connected to AC input lines of individual phases of a three-phase main converter (3) in series therewith. In a control device (12) for performing output control of the power converting apparatus, a current command value calculating circuit (20) which adjusts... Agent: Mitsubishi Electric Corporation

20110280050 - Power converter: The invention refers to a power converter and to a method for power conversion. The power converter includes a primary winding adapted to receive a primary alternating voltage. The converter further includes a first secondary circuit magnetically coupled to the primary winding, the first secondary circuit generating a first secondary... Agent: Nxp B.v.

20110280051 - Controller for a switched mode power supply (smps), a smps, and a method of controlling a smps: According to an example embodiment, a controller for a Switched Mode Power Supply having opto-coupler-based feedback from secondary to primary side, is disclosed, in which the optocoupler current varies inversely with the output voltage over a voltage control range. The converter is thereby enabled to consume less power than do... Agent: Nxp B.v.

20110280052 - Multilevel electric power converter: There is described a multilevel electric power converter circuit comprising: Ns switching elements connected in series in a closed loop; NAE additional elements, the additional elements being one of a direct current source and at least one passive element, connected within the closed loop such that each additional element is... Agent:

20110280053 - smps having a safety arrangement, a method of operating a smps, and a controller therefor: e

20110280055 - 3-phase high-power ups: A 3-phase uninterruptible power supply (UPS) including first, second, and third AC/DC converters, a DC/DC converter, and at least one DC/AC converter coupled to multiple electrical buses. The first, second, and third AC/DC converters each being configured to receive AC power and to provide multiple DC signals to the multiple... Agent:

20110280054 - Inverter circuit: This inverter circuit includes first and second switching elements and an output transformer which has a first primary winding connected in series between the first switching element and the second switching element and a second primary winding for obtaining an output voltage. The inverter circuit also includes a first voltage... Agent:

20110280056 - Power conversion apparatus: A power conversion apparatus is provided, which accommodates electronic components configuring at least part of a power conversion circuit, and a terminal block collecting wires running from the electronic components, in a case. The terminal block includes a plurality of terminal connecting parts at which a plurality of high-voltage cables,... Agent: Denso Corporation

11/10/2011 > 10 patent applications in 9 patent subcategories. recently filed with US Patent Office

20110273909 - Full-bridge phase-shift converter with auxiliary zero-voltage-switching circuit: A full-bridge phase-shift converter with an auxiliary zero-voltage-switching circuit includes a full-bridge switching circuit, an isolated transformer, an auxiliary zero-voltage-switching (ZVS) circuit, a full-wave rectifying circuit, and a low-pass filtering circuit. The full-bridge phase-shift converter is used to send energy which is supplied from a DC input voltage to a... Agent: Chicony Power Technology Co., Ltd.

20110273910 - Method and apparatus for a control circuit with multiple operating modes: An example controller for use in a power converter includes an oscillator and a logic circuit. The oscillator is to be coupled to a switch of the power converter and determines a switching cycle period of the switch. The logic circuit is also to be coupled to the switch to... Agent: Power Integrations, Inc.

20110273911 - 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.

20110273913 - Dc-dc converter: The present invention includes: a main switch Tr1 connected to two ends of a DC power supply Vi via a first primary winding 1a and a second primary winding 1b, connected to the first primary winding in series, of a transformer T1; a series circuit connected to the two ends... Agent: Sanken Electric Co., Ltd.

20110273912 - Switching mode power supply: A switching mode power supply (SMPS) including: a first state transform unit, including: a second photo diode; and a second photo transistor included between an AC power input unit and the pulse width modulation control unit to form a photo coupler with the second photo diode, and a second state... Agent: Smart Power Solutions, Inc.

20110273914 - Output current distortion compensating apparatus in inverter: An output current distortion compensating apparatus in an inverter is disclosed, the inverter including an inverter controller generating a PWM signal for controlling a PWM voltage generator, wherein the inverter controller includes a first dead time compensation voltage generator generating a compensation voltage based on an output current polarity of... Agent: Lsis Co., Ltd.

20110273915 - Method in a cascaded two-level converter, control device and computer program products: A method for providing a switching order signal to a cell of a cascaded two-level converter is provided. The cell includes a capacitor parallel-connected with two series-connected semiconductor devices. The cascaded two-level converter includes two or more of the cells cascade connected and arranged in a phase, divided into two... Agent:

20110273916 - Power converting apparatus: A power converting apparatus includes a first inverter (3) connected to a first DC power supply (1) and a plurality of second inverters (4A, 4B) connected in series to the first DC power supply (1). The plurality of second inverters (4A, 4B) provide compensation to an output voltage of the... Agent: Mitsubishi Electric Corporation

20110273917 - Intelligent photovoltaic interface and system: The present invention relates to a photo-voltaic interface for integration of photo-voltaic modules in a power system. The photo-voltaic interface includes a power conversion system adapted to convert power to a pre-determined voltage and current type, a control and monitoring system adapted to allow monitoring and control of power flow... Agent: Electric Power Research Institute, Inc.

20110273918 - Power device: A power device includes two groups of diodes, a step-down circuit, and a capacitor. Each group of diodes includes a first diode and a second diode. An anode of the first diode is connected to a cathode of the second diode, a node between the first and second diode is... Agent: Hon Hai Precision Industry Co., Ltd.

11/03/2011 > 22 patent applications in 17 patent subcategories. recently filed with US Patent Office

20110267842 - Synchronous drive circuit for variable frequency resonant converters: A DC to DC converter for controlling the on time and off time of a pair of synchronous switches, which reside in the position of output rectifiers in a half bridge transformer type circuit is provided. The circuit is actually two identical circuits, one for each half of the transformer... Agent:

20110267843 - Method and apparatus to limit output power in a switching power supply: An example integrated circuit controller for a power supply includes a modulator, a drive signal generator, a comparator, and a variable current limit generator. The modulator generates an enable signal having logic states responsive to a feedback signal. The drive signal generator either enables or skips enabling a switch of... Agent: Power Integrations, Inc.

20110267844 - Controller for a resonant switched-mode power converter: An embodiment of the invention relates to an LLC power converter including a controller configured to regulate an output characteristic of the power converter by controlling a power converter switching frequency. In a first mode of operation, the controller turns off a secondary-side power switch earlier than a turn-off time... Agent:

20110267845 - Parallel-connected resonant converter circuit and controlling method thereof: The configurations of a parallel-connected resonant converter circuit and a controlling method thereof are provided in the present invention. The proposed circuit includes a plurality of resonant converters, each of which has two input terminals and two output terminals, wherein all the two input terminals of the plurality of resonant... Agent: Delta Electronics, Inc.

20110267847 - Apparatus and method for detecting a change in output voltage of an isolated power converter: A controller for use in a power converter to detect changes in output voltage. An example controller includes a drive circuit to generate a switching signal. The switching signal is coupled to be received by a power switch to be coupled to an energy transfer element and an input of... Agent: Power Integrations, Inc.

20110267846 - Apparatus and method for sensing of isolated output: A controller for use in a power converter providing sensing of an isolated output is disclosed. An example controller includes a current controller to be coupled to an energy transfer element and an input of the power converter. A control circuit is included that generates a mode select signal coupled... Agent: Power Integrations, Inc.

20110267848 - Power converter: The power converter of present invention is a power converter composed of a core formed by a magnetic material and a winding wire wound at a predetermined position of the core and operating in a two-phase mode, in which the core is a closed magnetic path constituted by a center... Agent: Shinto Holdings Co., Ltd.

20110267849 - Flyback power supply with forced primary regulation: A controller that forces primary regulation is disclosed. An example controller includes a switched element to be coupled to a second winding of an energy transfer element of a power supply. A secondary control circuit is coupled to the switched element. The secondary control circuit is to be coupled across... Agent: Power Integrations, Inc.

20110267850 - Method and apparatus of operating a primary-side-regulation power converter at both continuous current mode and discontinuous current mode: A method and an apparatus of operating a primary-side-regulation power converter at both continuous current mode and discontinuous current mode are provided. The apparatus includes a switching circuit, a signal generator, a correlation circuit, and a feedback modulator. The signal generator generates a half signal and a second sampling pulse... Agent: System General Corporation

20110267851 - Converter circuit with adjustable dc bus voltage: A method for controlling voltage of a DC bus in a converter circuit is provided. The method includes monitoring a duty cycle of a switch that connects a resistive circuit across the DC bus, the switch being closed when the DC bus voltage reaches an upper voltage value and opened... Agent: Rockwell Automation Technologies, Inc.

20110267852 - Fault protection in voltage source converters with redundant switching cells via mechanical switches being closed pyrotechnically: A Voltage Source Converter has a series connection of switching assemblies, in which each switching assembly has an electrically conducting plate member carrying a plurality of semiconductor chips each having at least a semiconductor device of turn-off and a free-wheeling diode connected in parallel therewith. Said chips are connected in... Agent:

20110267853 - System and method providing protection in the event of current sensing failure for power converter: System and method for protecting a power converter. The system includes a first comparator configured to receive a first threshold signal and a first signal and to generate a first comparison signal. The first signal is associated with an input current for a power converter. Additionally, the system includes a... Agent: On-bright Electronics (shanghai) Co., Ltd.

20110267854 - Power converter with dual ring network control: A method for providing electric power to a power system includes receiving, at a slave node of a power converter having a plurality of slave nodes, a first synchronization signal via a first communication channel, the first synchronization signal purporting to represent a master timing characteristic of a master control... Agent: American Superconductor Corporation

20110267855 - Modular photovoltaic power supply assembly: An apparatus, device, and system for generating an amount of output power in response to a direct current (DC) power input includes a configurable power supply, which may be electrically coupled to the DC power input. The configurable power supply is selectively configurable between multiple circuit topologies to generate various... Agent:

20110267856 - Pfc with high efficiency at low load: A Power Factor Corrector (PFC), typically used as the first stage of switched mode power supplies, particularly suited for Universal Mains inputs, is disclosed, along with methods for controlling a switched mode power supply having power factor correction. In order to increase efficiency, particularly under low load conditions, without undue... Agent: Nxp B.v.

20110267857 - Method and apparatus for distributed power generation: A method and apparatus for generating AC power. In one embodiment, the apparatus comprises a DC/AC inversion stage capable of generating at least one of a single-phase output power, a two-phase output power, or a three-phase output power; and a conversion control module, coupled to the DC/AC inversion stage, for... Agent: Enphase Energy, Inc.

20110267858 - Configurable power supply assembly: An apparatus, device, and system for generating an amount of output power in response to a direct current (DC) power input includes a configurable power supply, which may be electrically coupled to the DC power input. The configurable power supply is selectively configurable between multiple circuit topologies to generate various... Agent:

20110267859 - Method and device for controlling a configurable power supply: An apparatus, device, and system for generating an amount of output power in response to a direct current (DC) power input includes a configurable power supply, which may be electrically coupled to the DC power input. The configurable power supply is selectively configurable between multiple circuit topologies to generate various... Agent:

20110267860 - Power control system: A power control system includes a rectifier circuit, a buck circuit, a voltage divider circuit, a control circuit, and a switch circuit. A first terminal of the rectifier circuit is connected to an alternating current (AC) power supply. A second terminal of the rectifier circuit is connected to a first... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd .

20110267861 - Signal transmission arrangement with a transformer: A signal transmission arrangement includes a transformer with a first and a second winding. A damping circuit has an input terminal for receiving an input signal. The damping circuit is coupled to the first winding and is configured to have an electrical resistance that is dependent on the input signal.... Agent:

20110267862 - System and method for protection of a multilevel converter: A three level neutral point clamped (NPC) converter includes a plurality of phase legs each having at least two inner switching devices, at least two outer switching devices, at least two clamping diodes, and a protection circuit. An inner component failure sensing circuit is employed in the protection circuit to... Agent: General Electric Company

20110267863 - Transformerless inverter comprising a dc/dc converter: A transformerless inverter that serves to feed electricity from a DC current source into an AC power grid, has an inverter bridge and a DC/DC converter connected upstream of the inverter bridge. The DC/DC converter converts an input DC voltage that is present between two input lines of the inverter... Agent: Sma Solar Technology Ag

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