Electric power conversion systems inventions 08/08

20080205086 - Inverter system: A vehicle system for use in powering an AC load. The system may included an inverter system operating in cooperation with a power distribution system. The power distribution system may be configured to provide a stabilized power output to the inverter system. The inverter system be configured to inverter the... Agent: Brooks Kushman P.c. / Lear Corporation

20080205087 - Power supply feedback control using sensed duty cycle: A feedback control circuit 10 is to be used with a power supply 12. Circuit 10 has a feedback controller 14 for providing a feedback signal to the power supply 12 in both continuous current mode and discontinuous current mode. A duty cycle sensor controller 16 is connected to the... Agent: Harness, Dickey, & Pierce, P.l.c

20080205089 - Dc/dc converter: Power converter system topologies comprise a DC/DC converter. The DC/DC converter includes a transformer coupling a high side to a low side. The high side may include an inverter bridge in the form of an inverter module and an inductor. The low side may include a rectifier in the form... Agent: Siemens Corporation Intellectual Property Department

20080205088 - Multi-input dc/dc converters with zero-current switching: A modular-based, zero-current-switched (ZCS), isolated full-bridge boost converter with multiple inputs is disclosed. Each converter module is used to match the connected input source and control the amount of power drawn from the source. The power from various sources are combined together and delivered to the load through a multiphase... Agent: Harness, Dickey, & Pierce, P.l.c

20080205090 - Isolated dc-dc converter: A secondary-side rectifying and smoothing circuit rectifies and smoothes an output voltage from a secondary coil of a transformer and outputs a rectified and smoothed voltage to the outside. A tertiary-side rectifying and smoothing circuit rectifies and smoothes an output voltage from a tertiary coil to produce a direct-current voltage... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080205091 - Self-oscillating power converter: A push-pull type self-oscillating power converter uses a main power transformer connected to a current transformer in series in such a way that a secondary current flowing through secondary sides of the two transformers is feedback to the primary side of the current drive transformer to generate a drive current... Agent: Joe Mckinney Muncy

20080205092 - Inverter and programming device thereof: It is possible to easily and rapidly develop an inverter application while maintaining stable quality. Executable code modules which have been sufficiently tested are installed in an inverter. An application source code is created on a programming device by using function blocks corresponding to the executable code modules and connection... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080205093 - Apparatus for electrical power transmission: A device for the transmission of electrical energy includes at least one current converter. Each current converter has phase elements with respective arrangements of circuit elements that comprise at least two switchable power semiconductors each and at least two free-wheeling diodes, each connected in parallel thereto, and energy storing means.... Agent: Lerner Greenberg Stemer LLP

20080205094 - Power supply unit for the motor of a magnetic levitation railway system: A power supply to the motor of a magnetic levitation railway system is provided with higher shut-off security which is comparably more economical and compact, and has a shorter shut-off time. As a result, a power supply device of at least one embodiment is provided with a frequency converter which... Agent: Harness, Dickey & Pierce, P.L.C

20080205095 - Ripple compensator and switching converter having such a ripple compensator: Systems and methods for compensating ripple current and improved ripple compensators and switching converters capable of compensating ripple current. In one embodiment, the ripple compensator for a switching converter of the type includes a switching means and filtering means comprises means for injecting a compensating current such that the AC... Agent: Docket Clerk

20080205096 - Control system and method for a universal power conditioning system: A new current loop control system method is proposed for a single-phase grid-tie power conditioning system that can be used under a standalone or a grid-tie mode. This type of inverter utilizes an inductor-capacitor-inductor (LCL) filter as the interface in between inverter and the utility grid. The first set of... Agent: Blank Rome LLP

20080205097 - Method and arrangement in connection with inverter: A method and an arrangement for controlling an inverter provided with a voltage intermediate circuit, the inverter (1) comprising two or more sub-inverters (1A, 1B, 1C), each being connected with a specific cable to feed a common load (2) and each sub-inverter (1A, 1B, 1C) receiving the same switch instruction... Agent: Buchanan, Ingersoll & Rooney Pc

20080205098 - Coupled-inductor multi-phase buck converters: In a multi-phase power converter, efficiency is increased and ripple reduced while maintaining transient response and dynamic performance improved by electrically coupling secondary windings of transformers or provided for inductors of respective phases such that current to a load is induced in each phase by current in another phase. Magnetic... Agent: Whitham, Curtis & Christofferson & Cook, P.c.

20080205099 - Power transistor circuit and the method thereof: The power transistor circuit with high-voltage endurance includes a first power transistor, a second power transistor and an enabling circuit. The first power transistor includes a first voltage endurance and a first inner resistance, while the second power transistor includes a second voltage endurance and a second inner resistance. The... Agent: Oliff & Berridge, Plc

20080205100 - Semiconductor circuit: A synchronous rectifying drive type semiconductor circuit wherein voltages between drains and sources of power switching elements are detected, temporarily held and compared with a reference voltage. First control signals are generated for turning on the power switching elements depending on comparison result and dead times for the power switching... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080205101 - Multi-pulse rectifier for ac drive systems having separate dc bus per output phase: An 18n-pulse rectifier for AC drive systems having a separate DC bus for each output phase is described, where n=any positive integer. The rectifier uses three separate phase rectifiers, one for each output phase of a transformer, each comprised of n six-pulse diode bridges connected in series or parallel. Each... Agent: Banner & Witcoff, Ltd.

20080205103 - Power factor control systems and methods: A boost converter comprises an inductance that receives an input signal. A switch controls current supplied via the inductance to a load. A power factor control module comprises a mode control module that selects an operating mode of the boost converter and a switch control module that switches the switch... Agent: Harness, Dickey & Pierce P.L.C

20080205102 - Power supply: A power supply (V1) for an electrical device comprising a transformer (X1) having primary and secondary windings. The primary winding is connectable to an AC voltage supply and circuitry on the secondary side is arranged to provide a DC output voltage for the electrical device. The power supply also comprises... Agent: Creative Labs, Inc. Legal Department

20080205104 - Digital power controller: A programmable digital power controller for gas discharge devices such as fluorescent lamps or other devices using all digital internal and external programmable controls. A specific ASIC is described. A gate array and microcomputer share parallel functions with fast sub-functions carried out by the gate array and slower sub-functions carried... Agent: Dr. Mark M. Friedman C/o Bill Polkinghorn - Discovery Dispatch

20080205105 - Voltage converter: A voltage converter having an input unit, a transitional unit configured to convert an AC voltage provided by the input unit into a transitional voltage and at least one auxiliary transitional voltage, and an output unit configured to convert the transitional voltage to a DC voltage using a charge pump... Agent: Dickstein Shapiro LLP

20080205107 - Integrated-inverter electric compressor: An object is to provide an integrated-inverter electric compressor that can enhance assembly and vibration resistance of power semiconductor switching devices and control substrates thereof constituting the inverter device. The integrated-inverter electric compressor, in which an inverter device is installed in an inverter container provided on an outer circumference of... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080205106 - Power supply device for vehicle: A power supply device for a vehicle is provided with: a battery serving as an electric storage device; a connection unit for receiving electric power provided from a power generation device for wind power generation, for example, and charging the electric storage device, the power generation device being provided outside... Agent: Oliff & Berridge, Plc

20080205108 - Power converter apparatus: The present invention provides a power converter apparatus which reduces power loss in a diode bridge element in order to achieve energy saving. The power converter apparatus is equipped with two diode bridge elements, and reduces power loss in respective diodes by connecting two input terminals of the one diode... Agent: Banner & Witcoff, Ltd.

20080205109 - Energy distribution system for vehicle: An electric power distribution system configured to facilitate transferring energy between an energy source and load. The distribution system may be configured or otherwise adapted to invert DC energy to AC energy when driving the load and to invert AC energy to DC energy when regenerating the energy source.... Agent: Brooks Kushman P.c. / Lear Corporation

20080198630 - Converter circuit comprising distributed energy stores: The invention relates to a converter circuit comprising at least one phase module (100) having an upper and a lower converter valve (T1, . . . , T6), wherein each converter valve (TI, . . . , T6) has at least one two-pole subsystem. According to the invention, each two-pole... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20080198631 - Power converter having flux bias regulation method: Provided is a flux regulation method for use in a power converter, wherein the method is carried out by a flux bias controller. The flux bias controller includes a current detector which is configured to detect the primary current of the transformer of the power converter in a predetermined switching... Agent: Madson & Austin

20080198632 - Switching power supply unit: A switching power supply unit is provided, in which input terminals of an AC voltage can be made common to output terminals of an AC voltage. A first switching circuit is provided between a winding of a transformer and a main battery. A second switching circuit is provided between another... Agent: Oliff & Berridge, PLC

20080198633 - Method and system for operating a power converter: A method and system for operating a power converter having an electrical component and a switch coupled to a voltage source are provided. A signal is received that is representative of a desired current flow through the electrical component. A signal is generated that is representative of a difference between... Agent: General Motors Corporation Legal Staff

20080198634 - Resonant dc/dc converter with zero current switching: A resonant DC/DC converter for supplying an output power comprises a switching device (18) for supplying a switched voltage (UWR) to a resonant circuit (20) having a transformer (T). The switched voltage (UWR) is derived from an intermediate circuit voltage (Uz) having a fixed pulse width and frequency so that... Agent: Philips Intellectual Property & Standards

20080198635 - Pulse width modulated ground/return for powered device: A new pulse width modulation return scheme in which the source of PWM FET is directly connected to the 48 Volt return and therefore Ids of PWM FET does not pass through the hot-swap FET which therefore significantly reduce the power dissipation on the die of PD chip.... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080198636 - Switching controller for parallel power supply: A switching controller for a parallel power supply is disclosed. The switching controller includes an input circuit coupled to an input terminal to receive an input signal for generating a phase-shift signal, a first integration circuit coupled to the input circuit to generate a first integration signal in response to... Agent: Law Offices Of Mikio Ishimaru

20080198637 - Multilevel ac/dc converter for traction applications: The present disclosure is concerned with a power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters connected between an AC supply line and a traction transformer. The transformer is operable at a transformer... Agent: Buchanan, Ingersoll & Rooney PC

20080198638 - Control arrangement for a resonant mode power converter: The switching frequency of an LLC converter is controlled by a control unit to which a feedback circuit provides a first current dependent upon the output voltage of the converter. An oscillator circuit produces a sawtooth waveform at a frequency dependent upon the first current, up to a limit equal... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080198639 - Operation control circuit: It is an object of the present invention to provide an operation control circuit without using a photo-coupler. The operation control circuit controls the operation of an LED in a DC/AC inverter comprising a voltage conversion circuit, a DC/AC conversion circuit for converting output voltage of the voltage conversion circuit... Agent: Woodcock Washburn LLP

20080192509 - Dc-dc converter with isolation: A power converter comprises a direct current (DC)-DC converter configured to receive an input voltage in a primary domain, a transformer coupled to and driven by the DC-DC converter and supplying an output voltage in a secondary domain, and a transmission path configured to pass a digital feedback signal through... Agent: Koestner Bertani LLP

20080192510 - Device for feeding electrical energy from an anergy source: A device (1) for feeding electrical energy from an energy source with variable source voltage into an electric power supply network (15), said device (1) including a transformer (112) for galvanic isolation, a resonant inverter (11) with semi-conductor switches (a-d; A, B), one or several resonant capacitors (17; 18, 19;... Agent: Pyle & Piontek Attn: Thomas R. Vigil

20080192511 - Power supply system and apparatus: The present invention relates to a switched mode power supply with programmable digital control and to a power supply system comprising a plurality of switched mode power supplies. The input terminals and the output terminals of the switched mode power supply system are separated by an insulation barrier, and the... Agent: Locke Lord Bissell & Liddell LLP Attn: Ip Docketing

20080192512 - Direct current to direct current converter: An exemplary DC to DC converter (2) includes a transistor (29), a first rectifying and filtering circuit (21), a pulse generating circuit (27) and a transformer (25). The first rectifying and filtering circuit transforms an external AC voltage to a first DC voltage. The transformer includes a primary winding (251),... Agent: Wei Te Chung Foxconn International, Inc.

20080192513 - Converter: The present invention has an object of obtaining a converter which is capable of suppressing an instant voltage variation and outputting a desired DC power with a high precision. There are provided a power conversion unit (11) that conducts power conversion on a supplied power, a smoothing filter (12) that... Agent: Buchanan, Ingersoll & Rooney Pc

20080192514 - Adaptive output current control for switching circuits: System and methodology for controlling output current of switching circuitry having an input circuit and an output circuit electrically isolated from each other. A value of the output current may be determined based on input voltage, input current and reflected output voltage representing the voltage in the input circuit which... Agent: Mcdermott Will & Emery LLP

20080192515 - Primary side constant output current controller with highly improved accuracy: A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp... Agent: Imperium Patent Works

20080192516 - Input circuit for a switch-mode power supply: The invention relates to an input circuit for a logic circuit part, comprising a voltage converter component for conversion of a mains voltage to the required low voltage in order to supply a user with a low voltage. The supply to the input circuit may hence be connected to a... Agent: Michael Best & Friedrich LLP

20080192517 - Self-excitation synchronous rectification driver: The present invention discloses a self-excitation synchronous rectification driver, which comprises a self-excitation coil, a self-excitation driver, a synchronous-signal source, a pulse transformer, a positive/negative edge detector, and a latch unit. The synchronous-signal source generates a synchronous signal to attain an external synchronous function. When the frequency is abnormal, the... Agent: Joe Mckinney Muncy

20080192518 - Input current controller arrangement and method: An arrangement having a first converting element configured to convert an input current linearly into an auxiliary current, a second converting element configured to convert the auxiliary current into an output voltage, and a separating element configured to separate slow changes of the auxiliary current from fast changes of the... Agent: Dickstein Shapiro LLP

20080192519 - Power conversion apparatus: In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with... Agent: Leydig Voit & Mayer, Ltd

20080192521 - Unipolar or bipolar chopping converter with three magnetically coupled windings: In order to reduce the cost of a chopping converter supplying a continuous voltage at the terminals of a load (Z), a circuit with three windings (Lp, Ls1, Ls2) and a single magnetic core is proposed, according to the present invention, which enables the cost and the size of the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080192520 - Unipolar or bipolar chopping converter with two magnetically coupled windings: In order to reduce the cost of a chopping converter supplying a continuous voltage at the terminals of a load (Z), a circuit with two windings (Lp, Ls) and a single magnetic core is proposed, according to the present invention, which enables the cost and the size of the circuit... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080192522 - Prism-type electrical converter for the generation, transmission, distribution and suppy of electric current, and production method thereof: More specifically, the inventive converter comprises a magnetic silicon steel core which can take the form of broken or continuous spiral columns, having a circular, elliptical, cross-shaped section, etc., an Evans-type converter which is a broken spiral-type converter or a Wescord-type converter or coiled with junction. The operation of the... Agent: Fish & Richardson Pc

20080186741 - Method and system adapted to regenerate load energy in ac-to-dc and dc-to-ac power converter systems: An energy regenerating system includes a converter, an inverter, and a supplemental power source. The converter and the inverter are electrically connected to each other to define an electrical loop such that energy of the energy regenerating system is regenerated. The converter, the inverter, and the supplemental power source are... Agent: Murata Power Solutions C/o Keating & Bennett, LLP

20080186743 - Dc transformer with an output inductance integrated on a magnetic core thereof and a dc/dc converter employing the same: A DC/DC converter includes an input filter, a half-bridge converter without PWM (Pulse Width Modulation) control function, a synchronous rectifier, an output capacitor, and a DC transformer. The DC transformer includes a magnetic core, a primary winding, a first secondary winding, and a second secondary winding. The magnetic core of... Agent: PCe Industry, Inc. Att. Cheng-ju Chiang

20080186742 - Synchronous rectifier type series resonant converter for operating in intermittence mode: Disclosed is a synchronous rectifier type SRC for operating in an intermittence mode, which includes: an input power for supplying the input DC voltage; an input-side switching unit for switching four input-side switching devices to convert the input DC voltage to AC voltage, the input-side switching unit being connected to... Agent: Lowe Hauptman Ham & Berner, LLP

20080186744 - Method and device for transforming and regulating a voltage signal: The present invention is generally directed to an efficient voltage transforming and regulating device based on a High Frequency (HF) transformer and a HF Electromagnetic Voltage Regulator (HFEVR) serially connected to the transformer's coil(s). The transforming and regulating device of the invention efficiently transforms and stabilizes an input power source... Agent: Nixon & Vanderhye, PC

20080186745 - Electronic circuit for a high-frequency switch: An electronic circuit for a high-frequency switch for opening an antenna resonance circuit of an RFID system, wherein the high-frequency switch can be opened and closed by d.c. voltages, in which circuit a rectifier circuit generates the blocking voltage for opening the high-frequency switch from the high-frequency supply voltage, the... Agent: Smith, Gambrell & Russell

20080186746 - Power supply system: A power supply system (1) comprises a power brick (3) which comprises a power converter (30) arranged in a first housing (2). The power converter (30) converts an AC-mains input voltage (VM) into an AC-output voltage (VO) which has a higher frequency than the AC-mains input voltage (VM). A power... Agent: Philips Intellectual Property & Standards

20080186747 - Method and apparatus providing a multi-function terminal for a power supply controller: A power supply controller circuit in one embodiment comprises a power switch, a multifunction circuit, and a control circuit. The power switch comprises a source and a drain respectively coupled to first and second terminals of the power supply controller circuit. The multifunction circuit comprises a first input that is... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080186748 - Aid for the switching of a switched-mode converter: A switched-mode power converter, including, between a first end of a main inductive element and a switch, a two-value inductive element automatically switching between its two values.... Agent: Stmicroelectronics Inc. C/o Wolf, Greenfield & Sacks, P.C.

20080186749 - Ac/dc conveter for aeronautics: According to the invention, the aircraft is equipped with an AC-DC converter that distributes power over a DC network starting from a three-phase alternating voltage of 230 volts applied to its main inputs (E1, E2, E3). The converter comprises an autotransformer which preferably has nine outputs (A1, A2, A3, B1,... Agent: Lowe Hauptman & Berner, LLP

20080186750 - Method and apparatus for dc bus capacitor pre-charge: A method and apparatus for converting three phase AC voltages on first, second and third input lines to DC voltage across positive and negative DC buses, the apparatus comprising a rectifier including first, second and third rectifier legs, each leg including a switch and a diode wherein the switch is... Agent: Rockwell Automation, Inc./(qb)

20080186751 - 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: Mattingly, Stanger, Malur & Brundidge, P.C.