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Electric power conversion systems September class, title,number 09/12

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.
  
09/27/2012 > 21 patent applications in 15 patent subcategories. class, title,number

20120243262 - Power supply system: A power supply system includes an electromagnetic interference (EMI) filter circuit, a rectifier and filter circuit, a switch circuit, a transformer, a feedback circuit and a controller. The feedback circuit includes a voltage divider circuit, a filter circuit, and a voltage and temperature compensation circuit. The voltage divider circuit generates... Agent: Ampower Technology Co., Ltd.

20120243263 - Dc-dc converter circuit: This DC-DC converter circuit includes: first and second switching elements (S1, S2); an output transformer (T) that includes a first primary winding (P1) connected in series between the positive electrode sides of the first and second switching elements (S1, S2), a second primary winding (P2) connected in series between their... Agent:

20120243264 - Power supply device: A power supplying device performs both of a suppression of EMI noise and a reduction in an output voltage. In the power supply device, a switching control device that controls a switching element according to a pulse control signal includes a PPM circuit that modulates a pulse position; a PWM... Agent: Hitachi, Ltd.

20120243265 - Control device for dc/dc converter: Disclosed herein is a control device for a DC/DC converter, in which FB control and FF control are combined to estimate an output voltage of a nonlinear dynamic system while guaranteeing stability. The control device includes a FB controller which generates a first time value for switch-off timing as the... Agent: Nagasaki University National University Corporatio

20120243266 - Method and apparatus for high-side input winding regulation: A controller for use in a power converter includes a control circuit coupled to control switching of a power switch coupled between a positive input supply rail of the power converter and an energy transfer element input of the power converter. A sampling circuit is coupled to the control circuit... Agent: Power Integrations, Inc.

20120243267 - Apparatus and method for efficient dc-to-dc conversion through wide voltage swings: A DC-to-DC converter includes two or more inductors coupled to a common core and two or more active switches, where at least one active switch is in an input current path. A controller operates the two or more active switches such that a DC input is driven through one or... Agent: Ledillion Technologies Inc.

20120243269 - Circuits and methods for controlling power converters including transformers: A circuit includes a transformer and a controller. The transformer includes a primary winding and a secondary winding, and operates in multiple switching cycles. A switching cycle includes a charging period and a discharging period. During the charging period, the transformer is powered by the input voltage and a current... Agent: O2micro, Inc.

20120243268 - Transformers and methods for constructing transformers: Transformers and methods of constructing transformers are disclosed. In one embodiment, a method of constructing a transformer includes wrapping a first primary winding around a core, wrapping a secondary winding around the core, and wrapping a second primary winding around the core. The first primary winding traverses substantially an entire... Agent: Sunedison, LLC

20120243270 - Flyback dc-dc converter with feedback control: A flyback DC-DC converter is disclosed herein. The flyback DC-DC converter includes a transformer, a voltage divider and a controller. The transformer receives a DC input voltage and converts the DC input voltage to a DC output voltage. The voltage divider is coupled to a first secondary winding of the... Agent:

20120243272 - Constant current power supply apparatus: A constant current power supply apparatus is provided which can drive a load with a constant current, even if the circuit configuration is such that a time delay is generated in the feedback control of a converter, or the like. An FB period restricting circuit including an ON generation circuit,... Agent:

20120243271 - Power converter with reduced power dissipation: A power converter with reduced power dissipation at light loads and method of operating the same. In one embodiment, the power converter includes an opto-isolator circuit configured to produce an output signal dependent on an output characteristic of the power converter. The power converter also includes a controller configured to... Agent:

20120243273 - Multi-level, multi-voltage matrix converter circuit and method for implementing such a circuit: p

20120243274 - Control methods for parallel-connected power converters: A method is described for controlling a plurality of power converters 1, 2 connected in parallel between an ac arrangement 12 and a common dc link 16, each of the power converters 1, 2 operating in accordance with a pulse width modulation (PWM) strategy and having an independently variable dc... Agent: Converteam Technology Ltd.

20120243275 - Switch control circuit, switch control method, power converter, and power conversion method for controlling conducting statuses of switch elements in bridgeless switching circuit: A switch control circuit for controlling a first switch element and a second switch element within a bridgeless switching circuit is provided. The bridgeless switching circuit generates an output signal according to an alternating current signal. The switch control circuit includes a current generating element and a phase generating element.... Agent:

20120243276 - Control circuit for controlling power conversion circuit, inverter apparatus including the control circuit, and interconnection inverter system including the inverter apparatus: A control circuit reduces switching loss by periodically stopping switching elements, and reduces the difference between the time for which positive switching elements are in on state and the time for which negative switching elements are in on state. The control circuit includes a command value signal generator generating command... Agent: Daihen Corporation

20120243277 - Method and apparatus to reduce line current harmonics from a power supply: In one aspect, a power converter includes a power switch, an energy storage element, a driver, a first calculator, and a second calculator. The first calculator coupled to determine an end of an on time of a power switch of the power converter by integrating an input current to output... Agent: Power Integrations, Inc.

20120243278 - Power module and circuit board assembly thereof: A power module includes a first bobbin, a primary winding coil, a circuit board assembly and a first magnetic core assembly. The primary winding coil is wound around the first bobbin. The circuit board assembly includes a printed circuit board, a second winding structure, at least one current-sensing element, a... Agent: Delta Electronics, Inc.

20120243279 - Buck converter and inverter comprising the same: A buck converter for converting a DC voltage at input terminals into an output voltage at output terminals is disclosed. The buck converter includes a DC voltage link including a series-connection of at least two capacitors between the output terminals, and one subcircuit per each capacitor of the series-connection. Each... Agent: Sma Solar Technology Ag

20120243282 - Converter for high voltages: A submodule of a high-voltage inverter has a first sub-unit with a first energy storage device, a first series circuit of two power semiconductor switching units connected in parallel with the first energy storage device, each including a switchable power semiconductor, having the same pass-through direction, and each being conductive... Agent: Siemens Aktiengesellschaft

20120243280 - Inverter for converting a direct current voltage into an alternating current voltage and method thereof: An inverter includes a first half period circuit, a second half period circuit, a first inductor, and a second inductor. A DC voltage source is used for providing a DC voltage. A loop of the first half period circuit and the first inductor is used for converting the DC voltage... Agent:

20120243281 - Power semiconductor device: According to one embodiment, a power semiconductor device includes a first conductor, a second conductor, and a first semiconductor chip. The first conductor includes a first portion and a second portion. The first portion includes a first major surface and a second major surface opposite thereto. The second portion includes... Agent: Kabushiki Kaisha Toshiba

  
09/20/2012 > 15 patent applications in 11 patent subcategories. class, title,number

20120236603 - Power converter having high efficiency at low load: A power converter includes a DC power source, a transformer having a first winding, a first MOSET and a PWM controller at the primary side and a second winding, a drive control unit, a current detection control unit, a comparator and a second MOSFET at the secondary side. The comparator... Agent:

20120236604 - Flyback converter with leading edge blanking mechanism: A flyback converter having a leading edge blanking (LEB) element keeps detecting whether or not primary-side current of the flyback converter reaches a predetermined threshold, beyond which the flyback converter could be damaged, in a predetermined LEB time corresponding to a leading edge of primary-side current. The flyback converter is... Agent: Ampower Technology Co., Ltd.

20120236605 - Ultralow no-load conduction loss dc power converter: An ultralow no-load conduction loss DC converter includes a DC power source, a transformer having a first winding, a first MOSET and a PWM controller at the primary side and a second winding, a third winding, a drive control unit, a rectifier unit and a second MOSFET at the secondary... Agent:

20120236606 - Method and system for applying power harmonics to secondary loads: A system and method for harvesting and applying power harmonics (e.g., harmonic distortion) comprises a shunt filter that is harmonically tuned for one or more connected loads. The shunt filter generally comprises at least one inductor connected serially to at least one capacitor. Additionally, the output leg of the capacitor... Agent:

20120236607 - Unified control of single and three-phase power converters: Provided herein are unified control methods and implementations for controlling single and three-phase power converters. In an exemplary embodiment, a unified controller is provided that can be used to control a three-phase three-wire Voltage Source Inverter (VSI), a three-phase four-wire VSI, a three-phase grid-connected power converter for current shaping, and... Agent:

20120236608 - Flux converter with power factor correction: A flux converter for converting an input-side alternating current into an output-side DC current, wherein a power factor correction is provided and the flux converter comprises a transformer having at least two serially arranged primary windings and a secondary winding wound in same direction. In addition, a first switch is... Agent: Siemens Aktiengesellschaft

20120236609 - Apparatus for reducing standby power: Disclosed is an apparatus for reducing standby power, which is capable of minimizing standby power losses by using an electric double layer capacitor (ELDC). The apparatus includes: an electric double layer capacitor for converting electrical energy supplied from the AC power source into DC power and storing the converted electrical... Agent: Korchip Corporation

20120236610 - Resonant converter apparatus and method thereof: A resonant converter apparatus includes a plurality of resonant converters connected in parallel, and a control module outputting a pulse width modulation (PWM) control signal to the resonant converters. The control module includes a voltage control loop and a circuit control loop. The voltage control loop compares the sensed output... Agent:

20120236613 - Electronic device: An electronic device including a power switch, a switch unit, a power supply unit and a control unit is provided. Two power ends of the power switch are connected in parallel with two connecting terminals of the switch unit. The power supply unit generates a system voltage by a power... Agent: Pegatron Corporation

20120236611 - Power line current fed power supplies producing stable load currents and related methods: Power line current fed power supplies producing stable load currents and related methods are described. The power supplies may include a current transformer coupled to an inductive network. In some embodiments, the current transformer operates in saturation mode. In some embodiments, a substantially constant DC current is generated having a... Agent: Marmon Utility LLC

20120236612 - Switching power supply apparatus: In a switching power supply apparatus, an alternating-current input power supply is input to the input terminals of a power factor correction converter and a DC-DC converter is connected to output terminals. A load is connected to the output of the DC-DC converter. A digital signal processing circuit takes the... Agent: Murata Manufacturing Co., Ltd.

20120236615 - Converter: A converter utilizing synchronous rectification comprises a first switch, a second switch connected in series to the first switch, and a gate drive circuit controlling each switch to switch to on/off-state using pulse-width modulation. Each switch includes a channel region that is conductive in both forward and reverse directions in... Agent:

20120236614 - High voltage inverter device: A high voltage inverter device uses, as an input voltage (Vin), a DC voltage or a voltage composed of a DC component with a pulsating current superposed thereon, switches the input voltage by a switching element (Qsw) to apply an exciting current to an excitation winding (NP) of a resonant... Agent: Tohoku Ricoh Co., Ltd.

20120236616 - Inverter capable of providing reactive power: In an inverter includes two input lines for connection to a DC voltage source, two half-bridges connecting the two input lines, and two output lines for connection to an alternating current load or an AC power grid. Each half-bridge includes two pulse-operated switches with reverse connected diodes, each output line... Agent: Sma Solar Technology Ag

20120236617 - Power converter: A motor control apparatus 1 includes an inverter 10, a smoothing capacitor 11, power-converting drivers 120 to 125, a power-converting power supply circuit 13, and discharging drivers 140 and 141. The inverter 10 includes switching circuits 100 to 102 comprised of series-connected two IGBTs. The power-converting drivers 120 to 125... Agent: Denso Corporation

  
09/13/2012 > 20 patent applications in 17 patent subcategories. class, title,number

20120230058 - Non-contact power transmission apparatus: A non-contact power transmission apparatus includes a high-frequency converting section, which converts input voltage to high-frequency voltage and outputs it, a primary coil, which receives high-frequency voltage from the high-frequency converting section, and a secondary coil, which receives electric power from the primary coil. The non-contact power transmission apparatus further... Agent: Kabushiki Kaisha Toyota Jidoshokki

20120230059 - Device for avoiding hard switching in resonant converter and related method: A control device controls a switching circuit for a converter. The switching circuit comprises a half-bridge having a high-side transistor and a low-side transistor. The control device comprises a controller configured to control turning on and turning off said two transistors, so that a square-wave voltage is applied to the... Agent: Stmicroelectronics S.r.l.

20120230060 - Pfc converter: A PFC converter that reduces a superimposed voltage generated by an inrush current into a filter capacitor operates such that, when a commercial alternating-current power supply is connected to input terminals of a PFC converter, a rectified voltage is applied to a filter capacitor via a diode bridge and a... Agent: Murata Manufacturing Co., Ltd.

20120230061 - Self-excited switching power supply circuit: There is provided a self-excited switching power supply circuit which shifts to continuous oscillating operation immediately after the self-excited switching power supply circuit is connected to an AC power supply and started and which does not cause start-up failure while using a start-up resistor of a high resistance value to... Agent: Canon Denshi Kabushiki Kaisha

20120230062 - Dc-dc converter: A DC-DC converter includes a series circuit including a primary transformer coil and a main switch element connected between a power input terminal and a ground terminal. A secondary transformer coil is connected to a rectifying/smoothing circuit including rectification-side and commutation-side synchronous rectifiers, a smoothing capacitor, and a choke coil.... Agent: Murata Manufacturing Co., Ltd.

20120230063 - Self-excited switching power supply circuit: There is provided a self-excited switching power supply circuit. A cycle control capacitor is charged with a flyback voltage generated in a feedback winding of a transformer during OFF operation period in which an exciting current does not flow in a primary winding of the transformer. An OFF control capacitor... Agent: Canon Denshi Kabushiki Kaisha

20120230064 - Switching controller with valley-lock switching and limited maximum frequency for quasi-resonant power converters: The present invention provides a controller for a power converter. The controller comprises a PWM circuit, a detection circuit, a signal generator, an oscillation circuit, a valley-lock circuit, a timing circuit and a burst circuit. The PWM circuit generates a switching signal coupled to switch a transformer of the power... Agent: System General Corporation

20120230065 - Two-peak current control for flyback voltage converters: A system including a switch configured to supply power to a load. A first comparator is configured to compare a first current through the switch to a first threshold. A second comparator is configured to compare the first current through the switch to a second threshold. The second threshold is... Agent:

20120230066 - Photovoltaic powered system: A photovoltaic powered system and an alternating current (AC) module thereof are disclosed. The photovoltaic powered system provides a direct current (DC) power through a photovoltaic module and converts the DC power into an AC power, which is grid-connected to an AC utility power. The AC module of the photovoltaic... Agent: Allis Electric Co., Ltd.

20120230067 - Power converter: This current converter is formed to short-circuit input-side terminals of a plurality of power conversion portions, to parallelly connect output-side terminals of the plurality of power conversion portions with each other and to couple inductors provided on the plurality of power conversion portions respectively with each other, to be capable... Agent: Kabushiki Kaisha Yaskawa Denki

20120230068 - Converter with power factor correction: A converter for converting an input-side alternating current into an output-side DC current, with a power factor correction being provided, wherein the converter comprises a transformer having at least two serially arranged primary windings, a first switch is used to switch a storage capacitor unit in series with a first... Agent: Siemens Aktiengesellschaft

20120230069 - Startup control circuit with acceleration startup function and method for operating the same: A startup control circuit with an acceleration startup function and a method for operating the same are disclosed. The startup control circuit is applied to a power supply. A power switch, which is coupled to a primary-side winding of a transformer, is switched to control the transformer, thus adjusting the... Agent:

20120230070 - Method and system for controlling a power converter system connected to a dc-bus capacitor: A method and system for controlling a power converter system with a direct current (DC)-bus capacitor connected to at least a first converter and a second converter. The first converter is with associated first current and the second converter is with associated second current. Switching states of the first and... Agent: Ford Global Technologies, LLC

20120230071 - Power supply circuit system: A power supply circuit system includes a ring oscillator provided with a variable resistance circuit, a charge pump circuit outputting a boosted voltage in response to an oscillation output signal from the ring oscillator, a voltage regulator circuit adjusting the boosted voltage from the charge pump circuit, a first current... Agent: Semiconductor Components Industries, LLC

20120230072 - Circuit assembly having a converter part comprising a central control unit: Circuit assembly (1,1a), uninterrupted power supply unit (1a) with converter part (2) and converter unit (20), central control unit (21) and input for current to be converted and output for converted current and circuit part (3, 4) connected upstream of input of converter part or connected downstream of output of... Agent: Aeg Power Solutions B.v.

20120230074 - Electrical isolators: Disclosed is an electrical isolator circuit comprising an input stage comprising first and second inputs, the input stage being configured to receive an input voltage signal; an output stage comprising first and second outputs electrically connected across a load capacitor; and a DC isolator comprising a first capacitor between said... Agent:

20120230073 - 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.

20120230075 - Power conversion apparatus and power conversion method thereof: An apparatus/method is provided. The power conversion apparatus includes: a rectifying unit including a silicon-controlled rectifier thyristor (SCR) for rectifying single-phase power externally inputted; a power factor correcting unit configured to correct a power factor of the power rectified by the rectifying unit; and a control signal generating unit configured... Agent: Lsis Co., Ltd.

20120230076 - Voltage balancing: This invention generally relates to voltage balancing among series-connected power switching devices comprising one or more insulated gate bipolar transistor (IGBT), and more particularly to a method controlling sharing of voltage among series-connected power switching devices, wherein at least one said device is an insulated gate bipolar transistor (IGBT), the... Agent: Amantys Ltd.

20120230077 - Automated mechanical disconnection of an electrical converter module in a frequency converter arrangement: An arrangement is described for receiving an electrical converter module for converting a first frequency of an electrical input signal into a second frequency of an electrical output signal. A rack includes input terminals for receiving the electrical input signal and output terminals for providing the electrical output signal. A... Agent:

  
09/06/2012 > 8 patent applications in 7 patent subcategories. class, title,number

20120224396 - Dc power supply: In a DC power supply in which a DC power source and a transformer are connected via a power conversion circuit and a secondary winding of the transformer is connected to a load via a rectifier diode bridge and a filter circuit to supply power to the load, a resonance... Agent: Hitachi, Ltd.

20120224398 - Charge-transfer conditioning circuit: A conditioning circuit for the transfer of electric charge, which includes a converter module including an energy-storage element applied to which is an input voltage (Vi) and a respective field-effect-transistor switch controlled by a respective driving signal (Vpa, Vpb) for selectively enabling transfer of charge from the energy-storage element to... Agent: Istituto Superiore Mario Boella Sulle Tecnologie Dell'informazione E Delle Telecomunicazioni

20120224397 - Devices and methods of constant output current and voltage control for power supplies: Power controllers, control methods and related integrated circuits for power supplies are disclosed. A power supply has a power switch and an inductive device. An exemplifying power controller comprises a first current source, a discharge time sensor, a representative current generator, and a pulse width modulator. The first current source... Agent:

20120224399 - Method and apparatus to reduce audio frequencies in a switching power supply: An example controller for use in a power supply regulator includes a switch signal generator, a modulation circuit, and a multi-cycle modulator circuit. The modulation circuit modulates the period of a modulation switching signal when an equivalent switching frequency is greater than a reference frequency and fixes the switching period... Agent: Power Integrations, Inc.

20120224400 - Electrical equipment: A television includes a power supply circuit including a transformer that converts input voltage to output voltage, an input voltage monitoring circuit that monitors the input voltage based on a voltage value of a primary side or a secondary side of the transformer, and a control unit that determines whether... Agent: Funai Electric., Ltd.

20120224401 - Variable input voltage pfc circuits, systems and power supplies with phase shifted power rails: A method of generating an output voltage from a variable input voltage with a power factor correction (PFC) system is disclosed. The PFC system includes a first power rail and a second power rail connected in parallel between an input for receiving the input voltage and an output for outputting... Agent: Astec International Limited

20120224402 - Power semiconductor module and power semiconductor circuit configuration: A power semiconductor module having a substrate, at least two power semiconductor switches being situated on the substrate and connected in parallel, at least one intermediate circuit terminal for connecting the power semiconductor switches to a first supply voltage potential and at least two intermediate circuit terminals for connecting the... Agent:

20120224403 - Method for controlling three-phase current converter: A method is for controlling a three-phase current converter. First, subtract a second reference current signal representing the predicted current of the three-phase terminals in the present switching cycle from a first reference current signal representing the predicted current of the three-phase terminals in the next switching cycle to obtain... Agent: National Chung Cheng University

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