Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems March listing by industry category 03/09

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.
03/26/2009 > patent applications in patent subcategories.

20090080222 - System and method for power saving conversion topology in switch mode power supplies: A power supply includes an input filter and rectifier module, a digital control module, and a converter module. The input filter and rectifier module is configured to rectify an input voltage. The digital control module is adapted to prevent a potential saturation of a transformer by setting a maximum allowable... Agent: Larson Newman Abel & Polansky, LLP

20090080223 - Forward converter with self-driven synchronous rectifiers: The present invention relates to a forward converter with self-driven synchronous rectifiers, which utilizes a secondary driving winding and a secondary driving circuit to drive the synchronous rectifiers in the secondary power loop. The secondary driving circuit, which is composed of a level shifter and a signal distributor, can shift... Agent: Moore & Van Allen PLLC

20090080224 - Ac to dc conversion circuit: A half-wave rectifier including an input port for receiving an incoming AC signal, an output port for outputting a half-wave rectified signal, an operational amplifier including inverting and non-inverting input terminals and an output terminal, the inverting input terminal connected to a ground reference and a non-inverting input terminal coupled... Agent: Honeywell International Inc.

20090080225 - Voltage source converter and method of controlling a voltage source converter: A voltage source converter for conversion between dc and ac voltage includes at least two serially connected phase legs. The outputs of the conversion stages form phase outputs to be connected to a phase of an alternating voltage network via a respective transformer. The configuration of the conversion stages reduces... Agent: Venable LLP

20090080226 - Method and apparatus for maximum power point tracking in power conversion based on dual feedback loops and power ripples: A method and apparatus for converting DC input power to AC output power. The apparatus comprises a conversion module comprising an input capacitor, and a first feedback loop for determining a maximum power point (MPP) and operating the conversion module proximate the MPP. The apparatus additionally comprises a second feedback... Agent: Raymond R. Moser Jr., Esq. MoserIPLaw Group

20090080227 - Switching power supply: A current-mode switching power supply is provided, in which there is no unstable operation arising from the fact that signals to generate PWM signals are minute, even when a load is light and a switching frequency is high. In a switching power supply of this invention, an added slope signal... Agent: Rabin & Berdo, PC

20090080228 - Industrial truck with a charger: Industrial truck with a charger, an asynchronous machine and a three-phase AC control unit which converts a DC voltage of a battery for the asynchronous machine, the charger having a switching power supply which is connected to the three-phase AC control unit via a transformer, the switching power supply, the... Agent: Vidas, Arrett & Steinkraus, P.A.

03/19/2009 > patent applications in patent subcategories.

20090073725 - Apparatus and method for regulating constant output voltage and current on primary side in a flyback converter: A voltage detector circuitry extracts a signal on primary side of a transformer in a flyback converter, which is proportional to the output voltage of the converter without voltage drop on the rectifier diode and leakage inductance effect on the transformer, and good output regulation is achieved without opto-coupler. To... Agent: Rosenberg, Klein & Lee

20090073726 - Current waveform construction to generate ac power with low harmonic distortion from localized energy sources: Methods and apparatus to provide low harmonic distortion AC power for distribution by converting energy from natural or renewable sources into electrical form, and constructing a current waveform on a primary winding of a transformer by recapturing inductive energy previously stored in the transformer so as to transform the converted... Agent: Fish & Richardson P.C.

20090073727 - Adjusting for conductor loss to regulate constant output voltage in a primary feedback converter: A lower-cost and more precise control methodology of regulating the output voltage of a flyback converter from the primary side is provided, which works accurately in either continuous voltage mode (CCM) and discontinuous mode (DCM), and can be applied to most small, medium and high power applications such cell phone... Agent: Imperium Patent Works

20090073728 - Power converter and method, and triangle wave generating circuit: A power converter that converts an AC power outputted from a generator into a DC power and supplies it to a battery (load). The power converter includes a thyristor (switch unit) connected between an output unit of the generator and the battery (load); and a gate control unit (control unit)... Agent: Nixon & Vanderhye, PC

20090073729 - Protection circuit for protecting a half-bridge circuit: The protection circuit has a detector for detecting the voltage across the resistor and an evaluation circuit which is designed in such a manner that it evaluates an output signal from the detector after the first switch has been switched on and provides a fault signal at an output when... Agent: Infineon Technologies Ag Patent Department

20090073730 - Ac-dc power converter: An AC-DC power converter is composed of AC input, a first rectifying circuit, a second rectifying circuit, a DC-DC converter and a DC output. The DC-DC converter has a DC input. The first rectifying circuit and the second rectifying circuit are connected in parallel between the AC input and the... Agent: Kathy Manke Avago Technologies Limited

20090073732 - Controller and associated method: A control circuit and associated method for dynamically controlling power to one or more heating elements are provided. A power source supplies power to a load through one or more current pass elements, which is controlled by a control signal. A processor determines a time period (T) having a time... Agent: Fitzpatrick Cella Harper & Scinto

20090073731 - Health monitoring of power converter fans and electric motors: A method for detecting a performance degradation of a fan in a power converter is disclosed. The method includes monitoring a speed of the fan and detecting the performance degradation of the fan based, at least in part, on the monitored speed. The method further includes generating a warning signal... Agent: Harness, Dickey, & Pierce, P.l.c

20090073733 - Method and apparatus to reduce audio frequencies in a switching power supply: A controller for use in a power supply regulator is disclosed. One controller includes a feedback circuit coupled to generate an equivalent switching frequency signal in response to a sense signal from a power supply regulator output. A comparator is coupled to compare the equivalent switching frequency signal with a... Agent: Blakely Sokoloff Taylor & Zafman LLP

20090073734 - Programmable feedback voltage pulse sampling for switched power supplies: Disclosed is a method and apparatus that includes a power supply having a primary coil and a secondary coil. The secondary coil generates an output voltage and a feedback voltage related to the output voltage. The feedback voltage is sampled at a time instant that is digitally controllable. The output... Agent: Mendelsohn & Associates, P.C.

20090073735 - Analog duty cycle replicating frequency converter for pwm signals: An analog, duty cycle replicating frequency converter extracts duty cycle information from an input, pulse width modulated signal and generates an output pulse width modulated signal of the same duty cycle at a different frequency without regard to the frequency of the input signal. It uses bipolar transistor based circuitry,... Agent: Delphi Technologies, Inc.

03/12/2009 > patent applications in patent subcategories.

20090067198 - Contactless power supply: A system includes a first device configured to receive a first wireless power associated with a first electromagnetic wave from a wireless power source. The first device is configured to convert the first wireless power to a first DC power, store the first DC power, and convert the first DC... Agent: Cooley Godward Kronish LLP Attn: Patent Group

20090067199 - Switched mode power supply: A switched mode power supply assembly (1) is described, comprising at least two switched mode power supply units (10i) coupled to each other in parallel; each power supply unit (10i) having an output stage (50i, 60i) capable of selectively operating in a first mode wherein its output signal (IOUT,I) is... Agent: Philips Intellectual Property & Standards

20090067200 - Device and method for equalizing the charges of individual, series-connected cells of an energy storage device: A device and a method for compensating charges of serially connected individual cells of an energy storage device includes a DC/DC converter which taps power from the energy storage device or an additional energy source, charges a capacitor of an intermediate circuit by way of the tapped power, inverts the... Agent: Lerner Greenberg Stemer LLP

20090067201 - Isolated switched-mode power supply with output regulation from primary side: Embodiments disclosed herein describe an isolated switched-mode power supply with its output regulated from the primary side, by generating a sensing current using a sensing element coupled to the output of the power supply, and measuring a scaled version of the sensing current which depends on the output voltage, and... Agent: Jun Cai

20090067202 - Power supply system and vehicle including the same: A converter ECU (2) obtains allowable power total value including at least one of discharge allowable power total value ΣWout of discharge allowable power Wout1, Wout2 and charge allowable power total value ΣWin of charge allowable power Win1, Win2. Then, the converter ECU (2) determines which of the allowable power... Agent: Oliff & Berridge, PLC

20090067204 - System and method for providing control for switch-mode power supply: System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first voltage and a second voltage, to process information associated with the... Agent: Jones Day

20090067203 - Three phase inverter with improved loss distribution: An inverter circuit couples a DC voltage source having a primary side and a reference side to an electric motor or other AC machine having multiple electrical phases. An inverter circuit includes switches, diodes and a controller. For each of the electrical phases, a first switch couples the electrical phase... Agent: General Motors Corporation Legal Staff

20090067205 - Power controller and vehicle equipped with power controller: An ECU detects an effective value and phase of a voltage from a commercial power supply, based on a voltage from a voltage sensor. Further, ECU generates a command current, which is a command value of current caused to flow through power lines and in-phase with the voltage of the... Agent: Oliff & Berridge, PLC

20090067206 - Rectifier circuit and three-phase rectifier device: Choppers are provided respectively in the output stages of two diode bridges, and their output sides are connected in parallel to a smoothing capacitor. By controlling the operations of the two choppers, the currents which are allowed to be inputted to the diode bridges are made triangular waves of mutually... Agent: Birch Stewart Kolasch & Birch

20090067208 - Method and apparatus for providing power: An apparatus includes a first converter module, a second converter module, and a sensor module. The first converter module converts a wireless power associated with an electromagnetic wave to a first DC voltage. The first converter module can include, for example, a Villiard cascade voltage multiplier, a precision rectifier, or... Agent: Cooley Godward Kronish LLP Attn: Patent Group

20090067207 - Secondary-side power receiving circuit of noncontact power supplying equipment: A plurality of pickup coils 2A and 2B are provided, resonance capacitors 3A and 3B forming resonance circuits 4A and 4B resonating at the frequency of an inductive path 1 are respectively connected in series with the pickup coils 2A and 2B, and the resonance circuits 4A and 4B are... Agent: Kusner & Jaffe Highland Place Suite 310

03/05/2009 > patent applications in patent subcategories.

20090059622 - Bi-directional dc-dc converter and method for controlling the same: A bi-directional DC-DC converter has a transformer for connecting a voltage type full bridge circuit connected to a first power source and a current type switching circuit connected to a second power source. A voltage clamping circuit constructed by switching elements and a clamping capacitor is connected to the current... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090059623 - Switched-mode power supply with emi isolation: Embodiments disclosed herein describe a switched-mode power supply with the EMI isolated from a input power, by disconnecting the input power from the switched-mode power supply when the switched-mode power supply is switching.... Agent: Jun Cai

20090059624 - Dc to dc converter: An exemplary direction current (DC) to DC converter includes a first rectifying and filtering circuit configured to receive an alternating current (AC) voltage and transform the AC voltage to a first DC voltage, a pulse width modulation (PWM) circuit, a first transformer configured to receive the first DC voltage and... Agent: Wei Te Chung Foxconn International, Inc.

20090059625 - Single-phase to three-phase converter: Single-phase to three-phase converter comprising a rectifier stage, a DC link and an inverter stage, wherein the rectifier comprises a filter choke, one controllable switch for power factor correction, rectifying diodes arranged in a diode bridge configuration having input terminals and output terminals, the controllable switch being connected to the... Agent: Buchanan, Ingersoll & Rooney PC

20090059626 - Switching power supply device and control device thereof: The invention provides a switching power supply device that can restrain the variation in the ripple of the output voltage corresponding to the variation in the input voltage and a control device thereof. When output voltage Vout is higher than a target value, switching converter circuit 10 is set to... Agent: Texas Instruments Incorporated

20090059627 - Linear voltage regulator: A linear voltage regulator is provided. The linear voltage regulator includes a first circuit configured to receive the first voltage from a voltage source and to remove frequency components of the first voltage in a first frequency range to obtain an output voltage at a primary output node. The linear... Agent: Cantor Colburn LLP-ibm Yorktown

20090059628 - Method for regulating a voltage using a linear voltage regulator: A method for regulating a voltage using a linear voltage regulator is provided. The linear voltage regulator has a first circuit with a primary output node and a second circuit having first and second inverters electrically coupled to the primary output node. The method includes receiving a first voltage from... Agent: Cantor Colburn LLP-ibm Yorktown

20090059630 - High-efficiency dc/dc voltage converter including capacitive switching pre-converter and down inductive switching post-regulator: A DC/DC converter includes a pre-converter stage, which may include a charge pump, and a post-regulator stage, which may include a Buck converter. The duty factor of the post-regulator stage is controlled by a feedback path that extends from the output terminal of the DC/DC converter to an input terminal... Agent: Patentability Associates

20090059629 - Voltage regulator for integrated circuits: A voltage regulator for a charge pump includes a capacitor divider and a reset circuit. The capacitor divider produces, based on an input voltage (VPP), a sample voltage at a sampling node. The sampling node and a reference voltage VREF are connected to respective inputs of a comparator that generates... Agent: Fsi C/o Jackson Walker, LLP

20090059631 - Voltage-sensed system and method for anti-islanding protection of grid-connected inverters: A method is provided for preventing islanding of a power source connected to an electric AC grid via an interface. The method senses an output voltage waveform of the interface, controls an output current waveform of the interface to track a reference current waveform having a mathematical relationship with the... Agent: Sonnenschein Nath & Rosenthal LLP

20090059632 - System and method for controlling a current limit with primary side sensing using a hybrid pwm and pfm control: A hybrid constant current control system that uses both pulse width modulation (PWM) and pulse frequency modulation (PFM) control. When transitioning from constant voltage mode to constant current mode the present invention can continue to control using PWM. Thereafter, when the voltage has dropped, the present invention smoothly transitions to... Agent: Fenwick & West LLP

20090059633 - Matrix converter apparatus: There is provided a matrix converter apparatus including both functions of outputting a step up voltage and outputting a step down voltage. In a matrix converter apparatus for directly connecting respective phases of a three phase alternating current power source (1) and respective phases of an output side by a... Agent: Sughrue-265550

20090059634 - Switching power supply: e

20090059635 - Rectifier device for automotive alternator: An AC generator, referred to as an alternator, is mounted on an automotive vehicle for supplying electric power to an on-board battery and other electric loads. The alternator includes a rectifier device for rectifying alternating current to direct current. The rectifier is composed of a minus-side heat-radiating plate on which... Agent: Oliff & Berridge, PLC

20090059636 - Power adapter having an electricity storing capability: A power adapter has a body, a pair of blades, a DC output terminal, an AC to DC circuit, a node and a storage unit. The blades are mounted in and protrude from the body to connect to an AC power source to obtain AC power. The DC output terminal... Agent: Patenttm.us

20090059637 - Inverter device having separated module terminal: An inverter device is provided with a semiconductor device, an input terminal, an intermediate terminal, an output terminal and an insulated substrate on which the semiconductor device, the input terminal, the intermediate terminal and the output terminal are mounted. Each of the input terminal, the intermediate terminal and the output... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090059638 - Portable device for generating two phases from a single electrical phase: A portable device for generating two electrical phases from a single electrical phase. The portable device includes a housing having a toroidal transformer therein. An input terminal block and an output terminal block are mounted to the housing and are electrically connected to the toroidal transformer. The portable device is... Agent: Cantor Colburn, LLP

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