Electric power conversion systems inventions 07/08

20080180973 - Converter and driving method thereof: The present invention relates to a converter and a driving method thereof. The converter includes a main switch and a switching controller. The switching controller controls on/off of the main switch by using a first voltage corresponding to an output voltage and a first current flowing to the main switch.... Agent: Sidley Austin LLP

20080180974 - Power misfet, semiconductor device and dc/dc converter: A technique for suppressing lowering of withstand voltage and lowering of breakdown resistance and reducing a feedback capacitance of a power MISFET is provided. A lateral power MISFET that comprises a trench region whose insulating layer is formed shallower than an HV-Nwell layer is provided in the HV-Nwell layer (drift... Agent: Townsend And Townsend And Crew, LLP

20080180975 - Harmonic disturbance regulator: Presented is a harmonic regulator that regulates a plurality of individual harmonics in a system having periodic torque disturbances to commanded values, including zero. For each harmonic being regulated, a feedback signal having at least one harmonic component due to the harmonic being regulated is transformed from a source reference... Agent: Reinhart Boerner Van Deuren P.C.

20080180976 - Selectable line voltage inverters and associated methods: An inverter capable of supplying power to utility grids of varying line voltages is described. In some examples, the inverter contains multiple output taps that are selected to output power to the utility grid based on the voltage of the utility grid. In some examples, the inverter includes a multi-pin... Agent: Perkins Coie LLP Patent-sea

20080180977 - Power supply control circuit having controllable switch and liquid crystal display using the same: An exemplary power supply control circuit (200) includes a first port (201), a second port (202), a third port (203), a controllable switch (280), and a control circuit (270). The first and second ports are configured to receive a power supply voltage signal. The second and third ports are configured... Agent: Wei Te Chung Foxconn International, Inc.

20080180978 - Capacitor drop type power supply circuit and air conditioner: To provide a capacitor drop type power supply circuit that can withstand a surge-current generated at power-on by use of inexpensive elements without requiring a complicated circuit configuration. A capacitor drop type power supply circuit includes: an AC power supply (1) connected to a series circuit of a resistor (2),... Agent: Buchanan, Ingersoll & Rooney PC

20080180979 - Inverter bus structures and associated methods: Inverter bus structures, assemblies and associated methods are disclosed herein. One embodiment of the disclosure, for example, is directed to a power inverter including an inverter module for converting DC power to AC power, a printed circuit board carrying a capacitor array, a DC power source, and a bus structure.... Agent: Perkins Coie LLP Patent-sea

20080175025 - Dc-dc converter and method in wireless communication system: A Direct Current (DC)-DC converter and method in a wireless communication system are provided. The converter includes a mode determiner, a DC-DC module, and a bypass module. The mode determiner controls operation of the DC-DC module depending on a magnitude of an input voltage. When the DC-DC module is activated... Agent: Docket Clerk

20080175024 - Power converter with isolated and regulation stages: In a power converter, the duty cycle of a primary winding circuit causes near continuous flow of power through the primary and secondary winding circuits during normal operation. By providing no regulation during normal operation, a very efficient circuit is obtained with a synchronous rectifier in the secondary operating at... Agent: Hamilton, Brook, Smith & Reynolds, P.c.

20080175026 - Control circuit having an impedance modulation controlling power converter for saving power: A standby circuit is provides to on/off a power converter for power saving. The standby circuit includes a comparison circuit. The comparison circuit is coupled to a feedback loop of the power converter to generate a mode signal when a feedback signal of the feedback loop is lower than a... Agent: J C Patents, Inc.

20080175027 - Switching power source apparatus: A switching power source apparatus includes a switching element connected through a primary winding of a transformer to a DC power source, a start circuit for a control circuit, a rectify-smooth circuit of a voltage of a secondary winding of the transformer, and a rectify-smooth circuit to rectify and smooth... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080175028 - Multilevel converter arrangement and use thereof: The present disclosure is concerned with the provision of the necessary power to the gate-drives controlling the semiconductor devices of a multilevel converter used in railway traction applications. A power loop with a power-loop emitter and a power-loop receptor located in different housings and connected via a power-loop conductor that... Agent: Buchanan, Ingersoll & Rooney Pc

20080175029 - Burst mode operation in a dc-dc converter: The present invention relates to a converter and a driving method thereof. The converter uses an input voltage to generate an output voltage by a main switch's switching and applies power to a load, senses the current flowing to the main switch to generate a sense voltage, uses a first... Agent: Sidley Austin LLP

20080170417 - Adjustable shunt regulator with soft-start reference: An adjustable shunt regulator comprises an operational amplifier, a transistor having a base terminal operatively connected to the output of the operational amplifier, a diode operatively connected in parallel with the transistor, and a voltage reference connected to the inverting input of the operational amplifier. The operational amplifier provides an... Agent: O'melveny & Myers LLP Ip&t Calendar Department La-1118

20080170418 - Dc-dc converter: A DC-DC converter includes a resonant coil (Lr) for zero voltage switching, the resonant coil being connected in series to a primary winding (Np), and a full-bridge switching circuit driven by phase shift control. The DC-DC converter includes a first regenerative diode (D7) disposed between a connection between the primary... Agent: Ostrolenk Faber Gerb & Soffen

20080170419 - Active peak voltage-limiting clamp circuit: The present invention discloses an active peak voltage-limiting clamp circuit, which comprises a primary switch unit and a secondary switch unit that are used to control the coil current of a transformer, wherein a signal acquisition unit, a zero-point decision unit, a feedback unit and a pulse control unit are... Agent: Joe Mckinney Muncy

20080170420 - Method and control circuit with input voltage detection for the control and protection of power converter: The present invention provides a method and a control circuit to detect an input voltage for the control and protections of a power converter. It includes a current sense circuit for generating a current signal in response to a switching current of a transformer. A detection circuit is coupled to... Agent: Rosenberg, Klein & Lee

20080170421 - Malfunction determining device for drive circuit and drive unit including the same, and method for determining malfunction in drive circuit: A device and method for determining whether a malfunction is present in a drive circuit, which drives an electric device that generates counter-electromotive force, when all gates in the switching elements of the drive circuit are blocked. After the gates are blocked, the temperature of the switching elements is monitored... Agent: Oliff & Berridge, PLC

20080170422 - Power on/off control architecture for power supply: The present invention provides a power on/off control architecture for a power supply so as to control the power on/off of the power supply. The power supply includes a rectifying unit, a standing power system, a PWM (Pulse Width Modulation) controller and a main power system. The standing power system... Agent: Joe Mckinney Muncy

20080170423 - Ac/dc transformation and voltage stabilizing circuit: A AC/DC transformation and voltage stabilizing circuit comprising a high voltage coupling capacitor, a bridge rectifying circuit, a voltage comparison circuit, a switch controlling circuit, a capacitor filtering, and a storage circuit; when the circuit is in use, the voltage of input AC power source will be reduced by said... Agent: Bruce H. Troxell

20080165552 - Switching power supply apparatus: The switching power supply apparatus includes detection means for detecting that leak current of an input smoothing capacitor becomes a predetermined value or more and first auxiliary switching means connected in series with respect to the input smoothing capacitor. The first auxiliary switching means becomes an on state during a... Agent: Birch Stewart Kolasch & Birch

20080165553 - Eighteen pulse rectification scheme for use with variable frequency drives: An AC/DC converter system comprises an input circuit for connection to a three phase AC source. An isolation transformer comprises a set of primary windings and first and second sets of secondary windings magnetically coupled to the set of primary windings. The first and second sets of secondary windings are... Agent: Wood, Phillips, Katz, Clark & Mortimer

20080165554 - Control method of power converter: A control method of a power converter for modulating a power signal outputted from a power converter to a load according to a feedback signal of the load includes the steps of: receiving a reference signal to determine outputting a modulation signal; receiving the modulation signal to determine outputting an... Agent: Joe Mckinney Muncy

20080165555 - Method and apparatus for cycle error correction for a power converter device, such as an electronic power inverter: Cycle error correction is performed in an electronic power system to compensate for a difference between an AC grid side frequency and an AC load side frequency. The electronic power system can comprise an electronic power inverter, such as one usable with an uninterruptible power supply. Cycles of signals indicative... Agent: Siemens Corporation Intellectual Property Department

20080165556 - Control of a mos transistor as rectifying element: A circuit for controlling a switch to be controlled in unidirectional fashion while the voltage present thereacross is an A.C. Voltage, including circuitry for delaying the switch turning-on with respect to a zero crossing of the voltage thereacross, and circuitry for triggering the switch turning-off after its turning on, at... Agent: Stmicroelectronics Inc. C/o Wolf, Greenfield & Sacks, P.C.

20080158913 - Power source module: A power source module is assembled on a main printed circuit board. The power source module comprises an input processing circuit, a PFC/PWM control circuit, a conversion circuit, and an output processing circuit. The input processing circuit is for rectifying an alternating current voltage to be a primary direct current... Agent: Pce Industry, Inc. Att. Cheng-ju Chiang

20080158914 - Full-bridge digital power converter controller and method to compensate volt-second imbalance: A digital controller for use with a full-bridge power converter which includes an isolation transformer that conducts first and second currents of opposite polarity during respective power-transfer phases. A current transformer senses the currents, and a non-zero current Iin is generated when either of the first or second currents is... Agent: Koppel, Patrick & Heybl

20080158915 - High-efficiency dc/dc voltage converter including down inductive switching pre-regulator and capacitive switching post-converter: A DC/DC converter includes a pre-regulator stage, which may include a Buck converter, and a post-converter stage, which may include a charge pump. The duty factor of the pre-regulator stage is controlled by a feedback path that extends from the output terminal of the pre-regulator stage or the post-converter stage.... Agent: Patentability Associates

20080158916 - Dc-ac converter and controller ic therefor: An inventive inverter has a semiconductor switch circuit connected to the primary winding of a transformer. The semiconductor switch circuit is respectively controlled by PWM to supply a constant current to the load connected to a secondary winding of the transformer. The inverter is capable of deliberately regulating its ac... Agent: Hogan & Hartson L.l.p.

20080158917 - Modular uninterruptible power supply with loadsharing between modules: In the preferred embodiments, an uninterruptible power supply has multiple UPS modules connected in parallel. Each module has an AC-DC-AC converter and a subcontroller for controlling the operation of the AC-DC-AC converter. A single current sensor senses a total aggregate current flowing from all the modules. Each subcontroller can detect... Agent: Watchstone P+d, Plc

20080158918 - Switching regulator: In some embodiments, a voltage regulator assembly comprises a linear regulator coupled to a first input voltage to generate an first output voltage, different from the first voltage, a switching regulator, and a bypass switch coupled to an input of the switching regular and switchable between a first position in... Agent: Caven & Aghevli C/o Intellevate, Llc

20080158919 - Power supply circuit with soft start circuit: An exemplary power supply circuit (20) includes a scaler (21), a field-effect transistor (23), a pulse width modulation circuit (25), and a capacitor (29). The scaler includes an output port (213). The pulse width modulation circuit includes an input port (251). The input port of the pulse width modulation circuit... Agent: Wei Te Chung Foxconn International, Inc.

20080158920 - System and method for charge pump switchover: An energy storage system and corresponding method, provides an efficient use of stored energy and more regulated power to an output terminal in the event of an interruption in line input power. In one embodiment, an energy storage system has a pulse width modulation (PWM) DC-DC converter module configured to... Agent: Hamilton, Brook, Smith & Reynolds, P.c.

20080158921 - Multilevel converter and method of converting a supply voltage: The present disclosure is concerned with a multilevel converter including a transformer arrangement comprising at least two transformer units, each with primary and secondary windings and a transformer core structure. The latter are merged into one shared transformer core comprising at least one return limb that is part of the... Agent: Buchanan, Ingersoll & Rooney Pc

20080158922 - Distributing time slots in parallel configured, switching power supplies: A multi-phase power system including a plurality of Pulse Width Modulation (PWM) controllers is provided, including a first PWM controller and at least one second PWM controller. The first PWM controller is configured to generate at least one first output signal based on a first clock signal, and to insert... Agent: Texas Instruments Incorporated

20080158923 - Device for controlling an electromechanical power converter, particularly of an electric motor: In a device and a method for controlling an electromechanical power converter (10), particularly of an electric motor and/or generator, comparatively cost-effective switches (14, 18) can be used without drastically decreasing the serviceable life of the entire system. A number of controllable switches (14, 18) can be used for controlling... Agent: Baker Botts L.l.p. Patent Department

20080158924 - Structurally robust power switching assembly: A structurally robust power switching assembly, comprising a first rigid structural unit that defines a first unit major surface that is patterned to define a plurality of mutually electrically isolated, electrically conductive paths. Also, a similar, second rigid structural unit is spaced apart from the first unit major surface. Finally,... Agent: Olympic Patent Works Pllc

20080158925 - Power supply circuit having two filter members and liquid crystal display using same: An exemplary power supply circuit (200) includes a rectifying circuit (240), a filter circuit (280), and a voltage stabling circuit (250). The rectifying circuit is configured to convert an alternating current voltage signal to a direct current voltage signal. The filter circuit is configured to filter the direct current voltage... Agent: Wei Te Chung Foxconn International, Inc.

20080158926 - Rectifier circuit and radio communication device: A rectifier circuit includes a bias circuit that outputs a direct-current voltage; a first MOS transistor that has a gate and a source; and a second MOS transistor that has a gate, a source, and a drain connected to the source of the first MOS transistor. Only the direct-current voltage... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080158927 - High frequency device: A high frequency device for supplying a high frequency power to a load, the high frequency device includes: an oscillating unit that can vary an oscillation frequency; a high frequency power supplying unit that serves as a power source by amplifying an oscillation signal output from the oscillating unit for... Agent: Greenblum & Bernstein, P.L.C