|Electric power conversion systems patents - Monitor Patents|
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Electric power conversion systems April category listing, related patent applications 04/10Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application. 04/29/2010 > patent applications in patent subcategories.
20100103702 - Adaptive inductive power supply: A contactless power supply has a dynamically configurable tank circuit powered by an inverter. The contactless power supply is inductively coupled to one or more loads. The inverter is connected to a DC power source. When loads are added or removed from the system, the contactless power supply is capable... Agent: Warner, Norcross & Judd In Re: Alticor Inc.
20100103703 - Isolated dc-dc converter: A switching circuit arranged to switch the input of an input power supply is connected to a primary winding of a transformer at a primary side of the transformer. A digital control circuit including a switching controller arranged to output control pulses to the switching circuit and a rectifying/smoothing circuit... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP
20100103704 - Control device for rectifiers of switching converters: A control device for a rectifier of a switching converter, the converter powered by an input voltage and suitable for providing an output current. The rectifier is suitable for rectifying an output current of the converter and includes at least one transistor. The control device is suitable for driving the... Agent: Seed Intellectual Property Law Group PLLC
20100103705 - Short circuit protection circuit for a pulse width modulation (pwm) unit: A short circuit protection circuit for a pulse width modulation (PWM) unit which includes a PWM logic control circuit, an under voltage lookout (UVLO) circuit and an internal clock circuit; wherein the UVLO circuit detecting a bias power (Vcc) and delivering an UVLO signal when the bias power is judged... Agent: Muncy, Geissler, Olds & Lowe, PLLC
20100103706 - Snubber circuit: A circuit arrangement for limiting excessive voltages by a forward delay time of a first diode is described. The first diode is alternately switched in a non-conducting direction and a conducting direction by switching a circuit element. The first diode is series-connected to a first capacitor and a pre-charging circuit... Agent: Siemens Corporation Intellectual Property Department
20100103707 - Contactless interface: Power extracted from an antenna inductively coupled to an alternating magnetic field is regulated to provide voltage supplies. In some implementations, a first voltage supply (e.g., 3.8 volts) provides regulated voltage to analog circuits and a second, lower, voltage supply (e.g., 1.4 volts) provides regulated voltage to digital circuits. The... Agent: Fish & Richardson P.C.
20100103708 - Power supply saving system for an electronic device: A power supply saving system includes a power input interface, a power output interface, an alternating current/direct current (AC/DC) converter, a relay, a relay driving circuit, a trigger, and a timing sequence circuit. The AC/DC converter is capable of transforming the AC power signal to direct current (DC) power to... Agent: PCe Industry, Inc. Att. Steven Reiss
20100103710 - Llc converter synchronous fet controller and method of operation thereof: A method for operating a power controller is provided. The method includes activating a rectifying FET upon a detection of an activation body diode conduction current occurring in the rectifying FET. The method generates an activation signal for a corresponding primary FET. The method further includes deactivating the corresponding rectifying... Agent: Hitt Gaines P.C.
20100103709 - System and method for emulating an ideal diode in a power control device: A system and method for emulating an ideal diode for use in a power control device is provided. In one embodiment, the invention relates to a circuit for emulating an ideal diode, the circuit including at least one field effect transistor including a source, a drain, a gate, and a... Agent: Christie, Parker & Hale, LLP
20100103711 - Uninterruptible power supply and method for tripping thereof: Performance failure in an uninterruptible power supply (UPS) is determined independently by itself. A selective tripping can be done within a shorter time than one cycle of an AC output. A UPS converts a DC voltage to an AC voltage and supplies the AC voltage to a load device. A... Agent: Posz Law Group, PLC04/22/2010 > patent applications in patent subcategories.
20100097826 - Resonant converter for synchronous rectification control: A resonant converter for improving synchronous rectification control is provided. The resonant converter obtains an input power, and through a switch unit, the period of the input power to be transmitted to a resonant circuit can be modified. The resonant converter further includes two transformers electrically connected to the resonant... Agent: Muncy, Geissler, Olds & Lowe, PLLC
20100097827 - Method and circuitry for improving the magnitude and shape of the output current of switching power converters: Apparatus of a grid-connected switching inverter for injecting it current into a power line comprises: (a) an electrical energy source for providing the substantially DC voltage to the apparatus; (b) a switching inverter connected to the electrical energy source for converting the substantially DC voltage of the electrical energy source... Agent: Marsteller & Associates
20100097828 - Interleave control power supply device and control circuit and control method for the power supply device: A two-phase critical interleave PFC boost converter, includes a master-side control circuit configured to critically control a first switching element based on a master signal; and a slave-side control circuit configured to critically control a second switching element based on a slave-signal with a phase difference of 180° from the... Agent: Kanesaka Berner And Partners LLP
20100097829 - Power factor correction converter: A power factor correction converter includes a diode bridge arranged to perform full-wave rectification on an AC input power supply, a switching element arranged to perform switching on an output voltage thereof, an inductor arranged to pass a current interrupted by the switching element and to accumulate and emit excitation... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP
20100097830 - Induction power system: An induced power system for being connected with and driving loads (300) includes a primary circuit (100) and a secondary circuit (200). The primary circuit (100) is provided with a primary inductor (110) for generating current induced magnetic filed. The secondary circuit (200) is provided with an induce generation portion... Agent: Morris Manning Martin LLP04/15/2010 > patent applications in patent subcategories.
20100091521 - Dual isolated input single power supply topology: An electric power supply system includes a transformer having two primary windings for receiving input power and a secondary winding for delivering output power, in which the primary windings are galvanically isolated from each other. A method for supplying electrical power to a load includes magnetically coupling a first primary... Agent: Honeywell/shimokaji Patent Services
20100091522 - Extended e matrix integrated magnetics (mim) core: A matrix integrated magnetics (MIM) “Extended E” core in which a plurality of outer legs are disposed on a base and separated along a first outer edge to define windows therebetween. A center leg is disposed on the top region of the base and separated from the outer legs to... Agent: Slater & Matsil, L.L.P.
20100091523 - Switching power supply apparatus: A digital signal processing circuit which performs average current control is disposed on a secondary side of a transformer of an isolated DC-DC converter, and a switching control signal output from the digital signal processing circuit is transmitted to a switching element included in a power factor correction converter through... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP
20100091524 - Electronic power protection circuit and applications thereof: An electric power protection circuit connected in series to a secondary side circuit of a transformer in a switch mode power supply includes a voltage/current limiting device to get an electric power signal output from the secondary side circuit of the transformer that goes through current and voltage limitation before... Agent: Townsend And Townsend And Crew, LLP
20100091525 - Power converters: We describe a resonant discontinuous power converter including a magnetic energy storage device, and a bipolar junction transistor (BJT) switch having a collector terminal coupled to repetitively switch power from the input on and off to said magnetic energy storage device such that power is transferred from the input to... Agent: Schwegman, Lundberg & Woessner, P.A.
20100091526 - High efficiency power converter: A power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier. First and second primary switches in series with first and second primary windings, respectively, are turned on for a fixed duty... Agent: Hamilton, Brook, Smith & Reynolds, P.C.
20100091528 - Method and arrangement to reverse the power flow of a direct current power transmission system: A direct current power transmission system includes a first and a second converter station that are coupled to each other via a direct current link. Each converter station includes a first or second line commutated converter, respectively. Before power reversal the first converter is operated as a rectifier and the... Agent: Venable LLP
20100091527 - Tapping power from a hvdc transmission system: An apparatus for tapping electric energy from an HVDC power transmission system includes at least one voltage source converter. The apparatus includes an intermediate ac network containing the voltage source converter, and a switching arrangement for disconnecting the intermediate ac network in dependence on the transmission direction of the HVDC... Agent: Venable LLP
20100091529 - Electrical energy converter:
20100091530 - Dc/dc converter: A DC-DC converter includes a control circuit which can change the target voltage of the reference voltage source. At the start-up of the DC-DC converter, the PWM control circuit controls so that the first switching element gradually increases the on-off ratio from a minimum on-off ratio; that the second switching... Agent: Ratnerprestia
20100091531 - Methods and systems for reducing power consumption: Methods and systems for managing power are described. In one embodiment of a method, a DC input voltage from an AC mains to DC converter, inputted to a DC to DC converter, is adjusted lower while maintaining substantially constant DC output voltage from the DC to DC converter in order... Agent: Apple Inc./bstz Blakely Sokoloff Taylor & Zafman LLP
20100091532 - Method and apparatus for improved burst mode during power conversion: A method and apparatus for converting DC input power to AC output power. The apparatus comprises an input capacitor, a DC-AC inverter, a burst mode controller for causing energy to be stored in the input capacitor during at least one storage period and the energy to be drawn from the... Agent: Raymond R. Moser Jr., Esq. MoserIPLaw Group
20100091533 - Member for a synchronous rectifier bridge, related synchronous rectifier bridge and use thereof: The member for a synchronous rectifier bridge (14) typically includes at least first and second connection terminals (B+, P), at least one field-effect transistor (15) having source and drain electrodes (16, 17) respectively connected to the first and second terminals (B+, P), and at least one comparator for comparing at... Agent: Berenato & White, LLC
20100091534 - Matrix converter space vector modulation method: [Means to Solve] A vector state in which a line voltage of multi-phase AC output is expanded onto a two-phase static αβ coordinates is defined. Simple harmonic oscillation vector axes of a sector where an output voltage command value vector Vo* exists are defined as an X axis and a... Agent: Foley And Lardner LLP Suite 50004/08/2010 > patent applications in patent subcategories.
20100085777 - Charging probe circuit: Various example embodiments are disclosed. According to one example embodiment, a charging probe may include an alternating current (AC) input configured to receive current from an AC source, a rectifier circuit configured to rectify the current received from the AC source, a primary coil, and a control circuit configured to... Agent: Brake Hughes Bellermann LLP
20100085775 - High voltage step-up dry power transformer and power supply unit comprising at least one such transformer: A high voltage step-up power transformer includes at least one module which defines a lower voltage primary side and a higher voltage secondary side and which includes at least one primary winding and at least one secondary winding, wound concentrically around a ferromagnetic core body, the primary winding(s) being situated... Agent: Young & Thompson
20100085776 - Switching power supply apparatus: A switching power supply apparatus according to the present invention includes a switching device and a control circuit, and the control circuit includes: a control terminal through which an auxiliary power voltage is supplied; an error amplifier which generates a difference voltage depending on a difference between a control terminal... Agent: Greenblum & Bernstein, P.L.C
20100085778 - Inductance element, method for manufacturing the same, and switching power supply using the same: An inductance element (1) includes a doughnut-shaped magnetic core (2) having a wound body or a stacked body of a magnetic ribbon, a bottomed container (3) in which the doughnut-shaped magnetic core (2) is housed, and a conductive lead portion (5) inserted into a hollow section of the doughnut-shaped magnetic... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.
20100085779 - Switching power source apparatus: In a switching power source of a flyback converter system according to the present invention, large electric power can be applied, by reducing loss of a switching element, a coil, and an output smoothing circuit, input voltage is applied to a primary coil of a transformer, and switching drive of... Agent: Rader Fishman & Grauer PLLC
20100085781 - Energy transmission device and semiconductor device for energy transmission control: The present invention includes a voltage clamping circuit 6 for outputting a voltage signal, which has been clamped to a predetermined voltage, from the drain voltage of a switching element 1, and a turn-on detection circuit 7 for detecting the turn-on timing of the switching element 1 from the voltage... Agent: Steptoe & Johnson LLP
20100085780 - Switching power supply circuit: In a RCC type switching power supply circuit, a sensing coil connected magnetically closely with an output coil is equipped in a fly-back transformer. The sensing coil is connected with a timing condenser through a Zener diode and an alternate current voltage output from the sensing coil is rectified and... Agent: Jordan And Hamburg LLP
20100085782 - Load current detection in electrical power converters: A resonant converter comprises switching circuitry (1) for supplying pulses, at a controllable frequency, to a resonant circuit so as to power the primary circuit (3, 12) of a transformer (4). The secondary winding (5a, 5b) of the transformer (4) delivers an AC signal which is rectified and then produces... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing
20100085783 - Method and system to influence the power generation of an adjustable speed generator: A method and a system to influence the power generation of at least one adjustable speed generator. The system includes a first voltage source converter connected to a local AC bus. The local AC bus is provided with power by the at least one adjustable speed generator. A second voltage... Agent: Venable LLP
20100085784 - Ripple voltage suppression method for dc/dc converter and apparatus thereof: A ripple voltage suppression apparatus includes a DC/DC converter and a control circuit. The DC/DC converter has a power electronic switch. The control circuit has a voltage detector detecting a DC output voltage of the DC/DC converter, a ripple voltage suppression circuit receiving the detected DC output voltage to generate... Agent: Kamrath & Associates P.A.
20100085785 - Method for limiting damage to a converter having power semiconductors in the case of a short circuit in the dc voltage intermediate circuit: A device for converting an electric current has a phase module, which in turn has an alternating current connection and at least one direct current connection connected to an intermediate direct current circuit. The device further has an energy accumulator. A phase modulation path is formed between each direct current... Agent: Lerner Greenberg Stemer LLP
20100085786 - Convertible charge-pump circuit: A convertible charge-pump circuit includes: a charging circuit having a plurality of charging capacitors and a pumping circuit having an output port coupled to a pumping capacitor. The charging circuit is configured for charging the charging capacitors to store a plurality of potential differences, respectively, when the convertible charge-pump circuit... Agent: North America Intellectual Property Corporation
20100085788 - Device for feeding electric energy into a power grid and dc converter for such a device: The device is for feeding electricity into a power grid (8) with a DC generator (1), a DC converter (2) and an inverter (3), and particularly to a DC converter (2) suited for the device. The DC converter (2) comprises a choking coil (15) having two windings (w1, w2) that... Agent: Pyle & Piontek, LLC
20100085787 - System and method for powering a hybrid electric vehicle: A drive system including a first bus, a second bus, an AC bus, an energy storage device coupled to the first bus, the energy storage device configured to output a stored DC voltage to the first bus and configured to receive a charging voltage from the first bus, and a... Agent: General Electric Company Global Research
20100085789 - Voltage drive system with hysteretic current control and method of operating the same: A voltage drive system is provided having a plurality of modulators and a plurality of cascaded switching circuits which collectively generate a single-phase output signal to a load. Each modulator receives a phase current error and has an adder which generates a modulated phase current error based on the phase... Agent: Sonnenschein Nath & Rosenthal LLP04/01/2010 > patent applications in patent subcategories.
20100080021 - Uninterruptible power supply with total isolation: An uninterruptible power supply includes an isolation transformer having dual primary windings. The secondary winding generates an output voltage based on the magnetic field generated in one of the dual primary windings. A first primary winding is coupled to an inverter circuit that receives an alternating current input voltage and... Agent: Watchstone P+d, PLLC
20100080022 - Method and apparatus for pre-charging power converters and diagnosing pre-charge faults: Power conversion systems and diagnostic techniques are presented for detecting suspected converter faults when a pre-charge circuit is engaged during system startup, in which known or estimated system characteristics are used to derive expected converter voltage values or rate of change values and the levels are measured during startup to... Agent: Rockwell Automation, Inc./fay
20100080023 - Switched capacitor voltage regulator: In general, in one aspect, the disclosure describes a switched capacitor voltage regulator to generate a regulated output voltage based on varying input voltages. The regulator is capable of operating at one of a plurality of voltage conversion ratios and selection of the one of a plurality of voltage conversion... Agent: Ryder, Lu, Mazzeo And Konieczny, LLC C/o Cpa Global
20100080024 - Power electronic module igbt protection method and system: A power electronics device with an improved IGBT protection mechanism is provided. More specifically, systems and methods are provided for reducing the switching frequency of an inverter module based on the junction temperature variation of the IGBT.... Agent: Susan M. Donahue Rockwell Automation, Inc./fy
20100080025 - Power supply with zero power consumption capability: Power supply devices are provided that can include power regulating circuitry for regulating (e.g., transforming or converting) electric power to be passed to an electronic device. A power supply device can also include control circuitry coupled with the regulating circuitry. The control circuitry can determine when the power supply device... Agent: Kramer Levin Naftalis & Frankel LLP
20100080026 - Power factor correction circuit: A power converter that is operable to convert AC power into DC power that may be delivered to a load. The power converter operates to bypass a power factor correction (PFC) circuit during a portion of each AC power cycle. The power converter bypasses the PFC circuit when an AC... Agent: Marsh, Fischmann & Breyfogle LLP
20100080027 - Integrated aircraft power conditioning unit: An integrated power conditioning unit includes a DC bus, a first terminal for connection to first AC equipment, a second terminal for connection to second AC equipment, a first inverter circuit providing bi-directional AC-DC conversion between a first AC power signal and a first DC power signal, and a converter... Agent: General Electric Company Global Research
20100080028 - Power conversion system and method for active damping of common mode resonance: Power conversion systems and methods are presented for damping common mode resonance, in which inverter or rectifier switching control signals are selectively modified according to a damping resistance current value computed using a predetermined virtual damping resistance value in parallel with an output or input capacitor and a measured output... Agent: Rockwell Automation, Inc./fay
20100080029 - Multiple phase power supply having current shared power factor correction: A multi-phase (N) power supply is presented having current shared power factor correction, comprising. This includes N input rectifier filters each receiving a respective different one of an N phase AC input signal and providing therefrom one of N rectified signals. N single phase power factor correction pre-regulators receives a... Agent: Tarolli, Sundheim, Covell & Tummino L.L.P.
20100080030 - Low-mass, bi-directional dc-ac interface unit: A DC-AC converter includes a DC-DC converter providing bi-directional conversion between a first DC power signal and a second DC power signal, the first DC power signal being on a first DC bus and the second DC power signal being on a second DC bus. The DC-AC converter also includes... Agent: General Electric Company Global Research
20100080031 - Power frequency converter: A current control circuit (active element) is provided that is connected between a rectifier of a DC power source and a smoothing capacitor in a power frequency converter and that controls a variation in the rectified current caused by a variation in the instantaneous power consumption of the load device.... Agent: Westerman, Hattori, Daniels & Adrian, LLPPrevious industry: Illumination
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