Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems November recently filed with US Patent Office 11/09

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.
11/26/2009 > 16 patent applications in 13 patent subcategories.

20090290383 - Resonant circuit and resonant power converter with a narrow operating frequency bandwidth: A resonant circuit has two parallel resonant branches and one assistant inductor connecting the two resonant branches. Each resonant branch has a series capacitor and a series inductor connected in series. The other end of the series inductor is for connecting to a primary side of a transformer unit. The... Agent: Patenttm.us

20090290384 - High power factor isolated buck-type power factor correction converter: A regulated power factor corrected power supply apparatus is provided. The apparatus includes an input rectifier circuit for receiving an input AC voltage and outputting a full-wave rectified DC voltage. A single-stage isolated buck-type converter is coupled with the input circuit. The converter circuit comprises an isolated buck-type converter circuit... Agent: Haverstock & Owens LLP

20090290385 - Resonant power factor correction converter: An AC-to-DC power converter configured to provide power factor correction and a single isolated low-voltage output. The power converter includes a single-stage resonant power converter including an isolation transformer, a resonant tank, a rectifier, and a bulk storage capacitor coupled to an output of the isolation transformer. In typical applications,... Agent: Haverstock & Owens LLP

20090290386 - Photocoupler and switching power supply circuit: A photocoupler for feeding back output voltage information on a secondary side of a switching power supply circuit through a light signal to control a switching operation on a primary side comprises: a light-emitting element for emitting a light signal flashing based on the output voltage information of the switching... Agent: Edwards Angell Palmer & Dodge LLP

20090290387 - Switching power supply with increased efficiency at light load: A switching power supply with the increased efficiency at light load has a switching power circuit, a power monitoring circuit and a light load power supplying circuit. The switching power circuit converts an AC power to a stable DC power and sends the DC power to a load according to... Agent: Christopher P. Maiorana, P.C.

20090290389 - Series resonant converter: A series resonant converter of the present invention includes an inverter circuit having at least a pair of a first and second switching device connected between two input terminals, a transformer having a primary winding and a secondary winding connected to the inverter circuit, a first and second resonant capacitor... Agent: Hoffmann & Baron, LLP

20090290390 - Switched mode power supply systems: We describe a switch mode power supply (SMPS) current regulation system comprising: a current sense signal input sensing a primary current of the SMPS; a voltage sense input to receive a voltage sense signal from a primary or auxiliary winding; a switch drive signal input to receive a drive signal;... Agent: Schwegman, Lundberg & Woessner, P.A.

20090290388 - Dc-dc converter: In a DC to DC converter, first and second primary windings are magnetically coupled to a first secondary winding. Third and fourth primary windings are magnetically coupled to a second secondary winding. The first and second primary windings are magnetically coupled to the first secondary winding. The third and fourth... Agent: Oliff & Berridge, PLC

20090290391 - Self-driven synchronous rectifier: A self-driven synchronous DC-DC converter (100) includes an input circuit (101) having a switching device (110) for selectively generating a pulsed DC input voltage responsive to an input switch control signal, the pulsed DC input voltage being one of a plurality of DC voltage pulses; an output circuit (113) coupled... Agent: Harris Corporation C/o Darby & Darby PC

20090290392 - Active emi filtering using magnetic coupling cancellation: An active electromagnetic interference (EMI) filtering may reduce the requirements for high current differential mode inductors. The active EMI filtering of the present invention may be useful in power devices that use switching power converters. Conventional EMI differential mode filtering devices may occupy up to 30% of the total weight... Agent: Honeywell/shimokaji Patent Services

20090290393 - Data exchange between inverters in an inverter system: The invention relates to an inverter system (1) with several inverters (2), each of which having at least one control unit (6), with at least one line (7) each being provided between the inverters (2) for data exchange, as well as to an inverter (2), and to a method of... Agent: Collard & Roe, P.C.

20090290396 - Capacitive power supply system: e

20090290394 - Method for supplying and discharging power to and from a resistive-inductive load, and rectifier used therein: Power is supplied to excitation windings in order to generate magnetic fields, preferably for activating superconducting coils. An AC transformer is used, and triggering of the coil is performed via a rectifier having little power loss. Preferably, a two-way rectifier using a freewheeling circuit is utilized in the associate device,... Agent: Staas & Halsey LLP

20090290395 - Power factor correction circuit: A power factor correction circuit includes a first rectifier to rectify an AC voltage, a series circuit connected to an output of the first rectifier and including a step-up reactor and a switching element, a rectifying-smoothing circuit connected to both ends of the switching element and including a second rectifier... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20090290397 - Primary sampling current controlled synchronous rectifying drive circuit: A primary winding current controlled synchronous rectifying drive circuit including a current sampling circuit that detects a current signal in a primary winding of a transformer and forwards it to a signal shaping and reset circuit, and a current compensation signal circuit that compensates a magnetizing current in the primary... Agent: Beusse Wolter Sanks Mora & Maire, P. A.

20090290398 - Power converter: A power converter includes a switching device composed of parallel-connected semiconductor chips evenly divided into two groups. The power converter includes a positive conductor, a capacitor and an output electrode. The positive conductor includes first and second terminal portions. The output electrode includes an end portion joined to a base... Agent: Woodcock Washburn LLP

11/19/2009 > 16 patent applications in 13 patent subcategories.

20090284989 - Flyback system power source apparatus: A flyback system power source apparatus, which applies a voltage intermittently to a primary winding of a transformer to perform voltage outputting onto a secondary winding side of the transformer, comprises: the transformer; a synchronously rectifying element for rectifying a current in a secondary winding of the transformer; and a... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090284991 - Switching power supply: A switching power supply includes a control circuit controlling ON and OFF of switching devices Q1 and Q2 and having an error amplifying circuit that controls a DC output voltage at a constant preset value, an oscillator circuit that controls the switching frequency in response to the output signal level... Agent: Kanesaka Berner And Partners LLP

20090284990 - Voltage-converter circuit and method for clocked supply of energy to an energy storage: The present invention provides a voltage converter circuit for the clocked supplying of energy to an energy storage, based on an input voltage present at an input of the voltage converter circuit. The voltage converter circuit comprises an energy storage and a switch assembly, the switch assembly comprising a first... Agent: Schoppe, Zimmermann , Stockeler & Zinkler C/o Keating & Bennett, LLP

20090284992 - Method and systems for conduction mode control: Methods for selecting between the two modes (states) of operation, continuous conduction and discontinuous conduction, are disclosed. Systems that are capable of selecting the operating mode and operating in the continuous conduction mode or the discontinuous conduction mode are also disclosed.... Agent: Burns & Levinson, LLP

20090284993 - Switching power supply circuit: A switching power supply circuit includes a direct current (DC) power supply input; a voltage divider connected between the DC power supply input and ground; a transformer including a primary winding, a secondary winding, and an assistant winding; a pulse generating circuit including a first transistor, a second transistor, an... Agent: Wei Te Chung Foxconn International, Inc.

20090284994 - Control circuit and method for a flyback converter: A control circuit and method are provided for a flyback converter converting an input voltage to an output voltage, to compensate for an entry point of a burst mode of the flyback converter, so that the entry point is not affected by the input voltage, and audible noise resulted from... Agent: Rosenberg, Klein & Lee

20090284995 - Voltage detecting circuit and switching power source apparatus: A voltage detecting circuit to perform voltage detection by introducing a voltage from a detection node, comprises: a first resistance, a second resistance, and a first switching element, connected in series with each other from the detection node to reference electric potential in order; and a detection circuit for performing... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090284996 - System and method of cancelling noise radiated from a switch-mode power converter: A switch-mode power converter comprises a converter circuit and an auxiliary switching circuit. The converter circuit comprises a storage component configured to temporarily store input energy; and at least one switch configured to control release of the stored energy from the storage component. The auxiliary switching circuit is coupled to... Agent: Fogg & Powers LLC

20090284997 - Method to create pwm switching with near zero common mode noise: A method for controlling a three-level inverter with a two-level inverter controller uses a conversion circuit to process the two-level control signals and output a set of three-level control signals.... Agent: Carlson, Gaskey & Olds, P.C.

20090284998 - Method and system for providing maximum power point tracking in an energy generating system: A method for providing a maximum power point tracking (MPPT) process for an energy generating device is provided. The method includes coupling a local converter to the energy generating device. A determination is made regarding whether the local converter is operating at or below a maximum acceptable temperature. A determination... Agent: Munck Carter/nsc

20090284999 - Voltage source inverter and medium voltage pre-charge circuit therefor: A medium voltage adjustable frequency drive includes an input isolation transformer having a three-phase input and a three-phase output, a converter having a three-phase input electrically connected to the three-phase output of the input isolation transformer and an output providing a direct current bus, an inverter having an input electrically... Agent: Martin J. Moran

20090285000 - Adapter with transformative component: An adapter for removably coupling a consumer electronic device to a host, with the adapter supplying a first service between the host and the consumer electronic device when the adapter is coupled to the host and the consumer electronic device is coupled to the adapter, and the adapter further supplying... Agent: Whirlpool Patents Company - Md 0750

20090285001 - Control circuits and methods for controlling switching devices: A control circuit for controlling a switching device having a first terminal, a second terminal, and a control terminal is disclosed. The control circuit includes a first diode for coupling to the first terminal of the switching device, a second diode for coupling to the second terminal of the switching... Agent: Harness, Dickey, & Pierce, P.l.c

20090285003 - Boost converter: In a boost converter including an input transistor receiving an input voltage, an inductor and a main switch serially connected to the input transistor, rectifying means connected to a node between the inductor and the main switch and smoothing means for smoothing the output of the rectifying means to generate... Agent: Mcdermott Will & Emery LLP

20090285002 - Mains converter for switching, without any interruption, between clocked voltage-regulated operation and fundamental-frequency unregulated operation, and method for switching a converter such as this without any interruption: A current source inverter is disclosed, comprising: means for operating the inverter in fundamental frequency unregulated operation, means for operating the inverter in clocked voltage regulated operation, means for recording parameters from which conclusions can be drawn at an instantaneous operating point and/or at an instantaneous network condition, means for... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20090285004 - Inverter module with thermally separated semiconductor devices: Systems and apparatus are provided for an inverter module for use in a vehicle. The inverter module comprises a first electrical base and a second electrical base each having an electrically conductive mounting surface, wherein the electrical bases are physically distinct and electrically coupled. A first semiconductor switch has a... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090285005 - Space-saving inverter with reduced switching losses and increased life: The invention relates to an inverter, and in particular a solar inverter. According to the invention, the inverter has a step-up converter (4), a mains-commutated controlled converter (2) and a filter (6), with the filter (6) being linked on the output side to the AC-side connections 10 (12, 14, 16),... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

11/12/2009 > 16 patent applications in 13 patent subcategories.

20090279326 - Switching power source apparatus: Disclosed a switching power source apparatus including: a transformer including a primary winding and a secondary winding; a switching element to intermittently apply a voltage to the primary winding by an on-off operation; and a synchronous rectifying element to rectify a current in the secondary winding, wherein the switching power... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090279327 - Insulated dc-dc converter: In an isolated DC-DC converter, an on-period control circuit generates an off-timing signal when the output voltage of an isolated DC-DC converter exceeds a reference voltage. A signal reception/power switch driving circuit causes a first switching device to be turned on based on a pulse signal for switching that is... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20090279328 - Hvdc system and method to control a voltage source converter in a hvdc system: A method to control a voltage source converter in a HVDC system includes controlling a frequency and a voltage amplitude of an AC voltage generated by the voltage source converter independently of the conditions in an AC network connected to the voltage source converter. The method is performed by a... Agent: Venable LLP

20090279329 - Digital latch control circuit for over-voltage protection and power converter using the control circuit: An AC/DC power supply with over-voltage protection includes a voltage converting circuit and a digital latch control circuit. The voltage converting circuit has a first-side winding, a second-side winding, and an auxiliary winding for providing a supply voltage according to the AC input voltage. The digital latch control circuit is... Agent: North America Intellectual Property Corporation

20090279330 - Device and method for limiting drain-source voltage of transformer-coupled push pull power conversion circuit:

20090279331 - Acdc converter: This invention relates to an ACDC converter (1) comprising a converter input (3) and a converter output (5), a pre-regulation stage (7) and a DC transformer stage (9) comprising a transformer input stage (11) and a transformer output stage (13). The transformer input stage comprises a double ended converter and... Agent: Holland & Knight LLP

20090279332 - Flyback constant voltage converter having both a pwfm mode and a pwm mode: A flyback AC/DC switching converter has a constant voltage (CV) mode. The CV mode has sub-modes. In one sub-mode (“mid output power sub-mode”), the output voltage (VOUT) of the converter is regulated using both pulse width modulation and pulse frequency modulation. Both types of modulation are used simultaneously. In a... Agent: Imperium Patent Works

20090279333 - Method and apparatus for reducing standby power of switching mode power supplies: An apparatus for coupling a switching mode power supply (SMPS) controller to a rectified line voltage. The apparatus includes a high-voltage startup transistor configured to provide a charging current during a startup phase of the SMPS controller and to provide substantially no current during a normal operation phase of the... Agent: Townsend And Townsend And Crew, LLP

20090279334 - Electronic device and switching power supply thereof: A switching power supply includes a rectifier circuit, a converter, a detecting unit, a control unit, a switching unit, and a protection unit. The rectifier circuit is used for rectifying an input voltage into a first direct current voltage. The converter is configured for generating a first current according to... Agent: PCe Industry, Inc. Att. Steven Reiss

20090279336 - Inverter modulator with variable switching frequency: An inverter control is used to control the output of a distributed power generating station, such as a photovoltaic (PV) solar power station, connected to a power grid. The power station is connected to an inverter output. Pulse width modulation is used to shape the output in order to maximize... Agent: The Nath Law Group

20090279335 - Power converter: To provide a power converter, comprising: a pair of main circuit switching elements to which diodes are connected; a means for generating a first PWM basic signal for driving a main circuit switching element; and a reverse voltage application circuit to be operated, triggered by a second PWM basic signal... Agent: Dla Piper LLP Us

20090279337 - Load drive device and vehicle equipped with the same: A surge voltage generated by the switching operation of an IGBT element and voltage variation generated in an equivalent series resistance of a capacitor are superimposed on an input voltage of an inverter. The equivalent series resistance has a temperature dependence that a resistance value increases with a decrease in... Agent: Kenyon & Kenyon LLP

20090279338 - Cycloconverter generator: In a cycloconverter generator, there are provided, q number of power circuits that supply rectified DC power of a DC power supply unit as operating power to the p (p>q) number of thyristors, and r (p>r) number of thyristor drive circuits that are connected to the q number of the... Agent: Arent Fox LLP

20090279339 - Cycloconverter generator: In a cycloconverter generator equipped with an AC power generator that generates single-phase AC power to be supplied to a load by turning on positive and negative switching elements at variable timing every half-period of a desired AC power frequency based on a phase signal and a DC power generator... Agent: Arent Fox LLP

11/05/2009 > 16 patent applications in 13 patent subcategories.

20090273950 - Power-saving device for power supply: A power-saving device for power supply, including a transformer having a primary coil and a secondary coil. The primary coil is electrically connected with a power supply circuit of the power supply. The secondary coil is serially connected with a diode to electrically connect with a load via a load... Agent: Rosenberg, Klein & Lee

20090273951 - Smart driving method for synchronous rectifier and its apparatus thereof: The present invention discloses a smart driving method for a secondary synchronous rectifier of an isolated converter and its apparatus thereof. The apparatus comprises: a main circuit having a secondary synchronous rectifier Q1; a differentiation filter circuit, filtering the drain-source voltage Vds of the secondary synchronous rectifier, comprising a capacitor... Agent: Perkins Coie LLP Patent-sea

20090273952 - Inverter with high frequency isolation transformer: An inverter receives a DC power supply and converts it into AC power to a primary coil of a high frequency transformer. The output of the high frequency transformer passes through two secondary coils, and each secondary coil is associated with a bus. The busses supply positive and negative AC... Agent: Carlson, Gaskey & Olds, P.C.

20090273953 - Inverter: An inverter includes a pulse width modulation (PWM) circuit, a direct current (DC) voltage input terminal, a storage capacitor, a first transformer, a soft start circuit, and a first transistor. The PWM circuit includes a first output terminal. The first transformer includes a first primary winding. The first primary winding... Agent: Wei Te Chung Foxconn International, Inc.

20090273954 - Protection method, system and apparatus for a power converter: Among many embodiments, a power converter and a method for operating a power converter are disclosed. The power converter may include a pair of switches connected in series, an output transformer connected to a common node between the switches and a protection apparatus for protecting each switch from being hard... Agent: Neugeboren O'dowd PC

20090273955 - Optimum structure for charge pump circuit with bipolar output: A charge pump circuit with bipolar output comprises a first switch capable of selectively connecting a first input terminal of a transfer capacitor to a voltage source, a second switch capable of selectively connecting a first input terminal of a first storage capacitor to said first input terminal of said... Agent: Sinorica, LLC

20090273956 - Modular converter for converting the electric power produced by aerogenerators, and wind-power plant that uses said converter: A modular converter 30 for converting the electric power produced by aerogenerators, designed to be used within a wind-power plant, which is equipped with: input terminals 30a designed to be connected to an electric-power generator 3 of a single-phase or multiphase type; output terminals 30b; and control devices 36 for... Agent: Merchant & Gould PC

20090273957 - System and method for providing adaptive dead times: System and method for adaptively altering a power supply's dead time. A method comprises detecting a start of a dead time, detecting an ending condition of the dead time, and ending the dead time. The detecting of the ending condition is based on a first current flowing through a lower... Agent: Slater & Matsil LLP

20090273959 - Biased-mosfet active bridge with active gate drive: A transistor active bridge circuit (100) including first and second field-effect transistors (102, 104) of a first channel type, and third and fourth field-effect transistors (106, 108) of a second channel type that is different from the first channel type. The transistor active bridge circuit also includes a plurality of... Agent: Harris Corporation C/o Darby & Darby PC

20090273958 - Cat-ear power supply having a latch reset circuit: A cat-ear power supply is operable to generate a DC voltage and draws current from an AC power source near the beginning and end of a half-cycle of the AC power source. A controllably conductive switching circuit selectively charges an energy storage capacitor to produce the DC voltage and become... Agent: Lutron Electronics Co., Inc. Mark E. Rose

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