Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems March listing by industry category 03/10

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.
03/25/2010 > patent applications in patent subcategories. listing by industry category

20100073964 - Switching control circuit and switching power supply: A switching element controls supply of a primary current to a transformer in a switching power supply. An amplifier circuit amplifies an output ripple of an auxiliary winding of a transformer. A fluctuation generator circuit generates a fluctuating signal, based on an output of the amplifier circuit. A basic signal... Agent: Mcdermott Will & Emery LLP

20100073965 - Self-oscillating dc-dc converter and method therefor: A self-oscillating DC/DC converter comprising: a first and a second input connection for application of an input DC voltage; a first and a second bipolar transistor, wherein each bipolar transistor has a control electrode, a reference electrode and a working electrode; at least one first coupling capacitor; wherein a first... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20100073966 - Forward converter transformer saturation prevention: A control circuit for use in a power converter in one aspect limits the magnetic flux in a transformer of a switching power converter. A first controlled current source has a first current that is substantially directly proportional to an input voltage to be applied to a winding of the... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100073967 - Switching control circuit and switching power supply: A switching element controls supply of a primary current to a transformer. A basic signal generator circuit generates a PWM basic signal regardless of a control condition of the switching element. A timer circuit measures an elapsed, predetermined longer time than one cycle of the PWM basic signal since a... Agent: Mcdermott Will & Emery LLP

20100073968 - Flyback converter with forward converter reset clamp: A power supply includes a first power converter, a second power converter, and a clamp reset circuit. The clamp reset circuit is electrically coupled to other components within the first power converter and the second power converter. A clamp standby connection can be provided to electrically couple the clamp reset... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100073970 - Modular multi-pulse transformer rectifier for use in symmetric multi-level power converter: In one embodiment, a system may include multiple transformers each to provide an output to one or more power cells, where the power cells provide AC power to a load. Each transformer may have at least one primary winding and multiple secondary windings, where the primary winding of each transformer... Agent: Trop, Pruner & Hu, P.C.

20100073969 - Photovoltaic integrated variable frequency drive: A photovoltaic (PV) integrated variable frequency drive system having a variable frequency drive and an energy source. The variable frequency drive having a back end inverter, a DC bus electrically connected to the back end inverter, and an active front end electrically connected to the DC bus to facilitate bi-directional... Agent: Trego, Hines & Ladenheim, PLLC

20100073972 - On-die anti-resonance structure for integrated circuit: A structure and method for reducing the effects of chip-package resonance in an integrated circuit assembly is described. A series RLC circuit is employed to reduce the output impedance of the power delivery system at the resonance frequency.... Agent: Schwegman, Lundberg & Woessner/micron

20100073971 - Regulating device for a multi-phase voltage converter: A regulating device for a multi-phase voltage converter includes a connecting element for picking-off an input/output voltage signal at a power path of the multi-phase voltage converter, and a filter, which is configured and coupled to the connecting element so as to cause the filter to output a filter output... Agent: Crowell & Moring LLP Intellectual Property Group

20100073973 - Device for protection of power factor correction in three phase power supply and control method thereof: A power factor correction (PFC) protection device used when an abnormal current of a three-phase inverter occurs and a method of controlling the same are disclosed. If any mis-connection (or non-connection) occurs due to a mistake of a producer at a power-supply input terminal applied to the reactor and the... Agent: Staas & Halsey LLP

20100073974 - Digital peak input voltage detector for a power converter controller: An example integrated circuit controller for a power converter includes a digital peak detector and a switching block. The digital peak detector is coupled to output a digital count signal representative of a peak input voltage of the power converter. The switching block is coupled to control switching of a... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100073975 - Device for power factor correction in three phase power supply and control method thereof: A device correcting a power factor caused by an input current delay of a three-phase inverter and a method of controlling the same are disclosed. In case of a product having a high-current power environment and a high-capacity inverter, a three-phase power factor correction (PFC) device detects any erroneous PFC... Agent: Staas & Halsey LLP

20100073976 - Dc/ac converter: A DC/AC converter includes: a resonant circuit including a transformer having a primary winding and a secondary winding and at least one capacitor, in which the capacitor is connected to at least one of the primary winding and secondary winding of the transformer, and an output terminal to which the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100073977 - Electric power supply circuit and pam control method for the same: An electric power supply circuit includes a bridge circuit (12) for rectifying alternating current power, a smoothing circuit (13) which has two capacitors (C1 and C2) serially connected to each other, and a PAM control section (15) for turning a switching element (S) on and off at a predetermined timing.... Agent: Birch Stewart Kolasch & Birch

20100073978 - Bridge rectifier circuit with bipolar transistors: A bridge rectifier circuit including a first and second pair of bipolar transistors, wherein the bipolar transistors of each pair have conductivity types that are opposite from one another; first and second input terminals coupled to each of the bipolar transistors; and first and second output terminals coupled to each... Agent: Dickstein Shapiro LLP

20100073979 - High-voltage-resistant rectifier with standard cmos transistors: A high-voltage-resistant rectifier with standard CMOS transistors is disclosed in present invention. In a bridge full-wave rectifier comprising four MOS transistors, extra transistors are connected in series between the transistors which endure high voltage and the input to decrease the voltage imposed on the gate of them; moreover, the present... Agent: Sinorica, LLC

20100073980 - Power converter assembly with isolated gate drive circuit: A power converter assembly is provided. The power converter includes at least one switch, a high frequency oscillator coupled to the at least one switch and configured to generate a high frequency waveform based on direct current (DC) power provided thereto, and a power buffer coupled to the at least... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

03/18/2010 > patent applications in patent subcategories. listing by industry category

20100067259 - Forward-flyback converter with active-clamp circuit: The present invention discloses a forward-flyback converter with active-clamp circuit. The secondary side of the proposed converter is of center-tapped configuration to integrate a forward circuit and a flyback circuit. The flyback sub-circuit operating continuous conduction mode is employed to directly transfer the reset energy of the transformer to the... Agent: Volpe And Koenig, P.C.

20100067260 - Power supply: In a switched mode power supply, and in accordance with a method for operating a switched mode power supply, the magnitude of each occurrence of a current flowing during operation of a power output switch is sensed for negative feedback control. A sense voltage is generated proportional to the primary... Agent: Robert D. Shedd, Patent Operations Thomson Licensing LLC

20100067261 - Switching power supply device of half-wave rectification current resonance type and method for starting same: Object of this invention is to prevent deviating increase of switching frequency of a switching element for a half-wave rectification current resonance type switching power supply device in the process of a soft start operation. To solve the object, between output terminals of a direct current power source, a first... Agent: Birch Stewart Kolasch & Birch

20100067262 - Switching power source device, switching power source control circuit, and switching power source device control method: A switching power source device for supplying power to a load includes a series resonant circuit, a plurality of main switch elements or main switch element groups for switching a current. path of the series resonant circuit, a transformer for inducing a secondary current from the series resonant circuit, a... Agent: Kanesaka Berner And Partners LLP

20100067263 - Dual interleaved flyback converter for high input voltage: An integrated magnetic flyback converter includes interleaved phases that can be connected in series for an input stage and in parallel for an output stage. An integrated magnetic core has legs with gaps that may weaken a coupling between a primary and secondary of the associated transformer. The primary and... Agent: Weingarten, Schurgin, Gagnebin & Lebovici LLP

20100067264 - Power conversion apparatus: Provided is a power conversion apparatus in which a main circuit is provided with a plurality of switches, and power conversion is performed to generate power for supply to a three-phase AC load from a three- or single-phase AC power supply. At least some of the plurality of switches are... Agent: Wenderoth, Lind & Ponack, L.L.P.

20100067265 - Electronic system and power supply device thereof: In an electronic system and a power supply device thereof, the power supply device supplies electric power to an electronic device in the electronic system. When the electronic device is shut down, the electronic device transmits a shutdown signal to the power supply device, so that the power supply device... Agent: Egbert Law Offices

20100067266 - Control of a modular converter with distributed energy storage devices: A device for converting an electrical current includes at least one phase module with an AC connection and at least one DC connection. A phase module branch is provided between each DC connection and each AC connection. Each phase module branch has a series connection made of sub-modules, which in... Agent: Lerner Greenberg Stemer LLP

20100067267 - Controller and method for controlling converters of disparate type: A converter controller and a method of controlling converters. In one embodiment, the converter controller includes: (1) a converter efficiency database configured to store data pertaining to efficiencies of converters, (2) a power requirement assessor configured to compare ratings of online ones of the converters to an output power requirement... Agent: Hitt Gaines P.C.

20100067268 - Systems and methods for controlling energy consumption of ac-dc adapters: An AC-DC adapter is provided with an auto-sensing capability to sense when no DC load is present at the output (secondary side) of the adapter by monitoring for absence of load-indicative signals, such as power supply identifier (PSID) signals communicated to the adapter from a coupled DC-powered device. Upon detection... Agent: O'keefe, Egan, Peterman & Enders LLP

20100067269 - Intelligent sensorless control of a phase controlled rectifier: An uninterruptible power supply (“UPS”) has a phase-controlled rectifier coupled to a source of AC power and having an output providing a DC bus, the output of the phase-controlled rectifier coupled to an inverter. A first controller generates a firing angle for the rectifier and a fuzzy logic controller generates... Agent: Harness, Dickey & Pierce, P.L.C

20100067270 - Method and apparatus to reduce line current harmonics from a power supply: A method and apparatus for controlling a power converter. In one aspect, a controller for use in a power converter includes a first calculator coupled to determine an end of an on time of a power switch of the power converter by integrating an input current to output an on... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100067271 - Reactive power compensation in solar power system: A method of providing reactive power support is proposed. The method includes detecting at least one of a plurality of network parameters in a distributed solar power generation system. The generation system includes a plurality of photovoltaic modules coupled to a grid via inverters. The method further includes sensing a... Agent: General Electric Company Global Research

20100067272 - Universal power converter: Methods and systems for transforming electric power between two or more portals. Any or all portals can he DC, single phase AC, or multi-phase AC. Conversion is accomplished by a plurality of bi-directional conducting and blocking semiconductor switches which alternately connect an inductor and parallel capacitor between said portals, such... Agent: Groover & Associates

20100067273 - Switch mode power supply for in-line voltage applications: A switch mode power supply (15) employs a rectifier (20), a converter (50) and converter driver (60). The rectifier (20) generates a rectified supply voltage (VRS) based on an in-line voltage (VLN), and the converter driver (60) generates one or more driving voltages (VDR) to facilitate a conversion by the... Agent: Philips Intellectual Property & Standards

20100067274 - Method and device for creating a direct voltage or a direct current: A device, which functions to generate a DC voltage or a DC current, has at least one rectifier element (D) and at least one transformer (T) that has at least one primary winding (W1) connected through leads (PL1, PL2) of a power supply lead (PL) to an AC voltage source... Agent: Oliff & Berridge, PLC

20100067275 - Unidirectional mosfet and applications thereof: Owing to the property of bidirectional conduction under the saturation mode, synchronous rectifiers in conventional power converters usually suffer from a reverse current under light loads or a shoot-through current under heavy loads. The reverse current may degrade the converter efficiency and the shoot-through current may damage synchronous rectifiers. The... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20100067276 - Two terminals quasi resonant tank circuit: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges... Agent: Haverstock & Owens LLP

03/11/2010 > patent applications in patent subcategories. listing by industry category

20100061121 - Voltage reduction detection circuit and switching power supply system: A voltage reduction detection circuit for a switching power supply includes a first rectifier diode having an anode connected to the output terminal of a secondary winding; a second rectifier diode connected in parallel with the first rectifier diode and having a cathode connected to the output terminal; and resistors... Agent: Morgan Lewis & Bockius LLP

20100061122 - Dc-dc converter: A small and efficient DC-DC converter is provided. In this DC-DC converter, passive elements such as an inductor and a capacitor can be reduced in size by reducing switching loss by a soft switching technology and increasing the drive frequency of a switching element. The DC-DC converter has a main... Agent: Foley And Lardner LLP Suite 500

20100061123 - Two terminals quasi resonant tank circuit: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges... Agent: Haverstock & Owens LLP

20100061124 - System and method for power conversion: A system and method for operating power supplies. A method comprises altering a current sense (CS) signal, turning off a switch of the converter in response to a determining that the CS signal is greater than or equal to a first threshold, and leaving on the switch of the converter... Agent: Slater & Matsil LLP

20100061125 - Flyback boost circuit and strobe device using the same: A flyback boost circuit includes an output voltage detection terminal provided to a secondary winding of a transformer of the flyback boost circuit, and configured to detect an output voltage. Prior to the start of a boost operation, current is supplied to a secondary side of the transformer via the... Agent: Rader Fishman & Grauer PLLC

20100061126 - System and method for a primary feedback switched mode power supply: A primary side controlled power converter having a voltage sensing means coupled to a transformer of the power converter and configured to provide a voltage feedback waveform representative of an output of the transformer is provided. A primary switching circuit operates to control energy storage of a primary side of... Agent: Er-shiang Chen

20100061128 - Electric power supply circuit: An electric power supply circuit includes a switching element (S) for causing a short-circuit for output power of a diode bridge circuit (12), a zero-cross detector section (5a) for detecting a point at which an input voltage reaches a level equal to or lower than a reference level, a timer... Agent: Birch Stewart Kolasch & Birch

20100061127 - Power supply device: The power supply device according to the present invention converts alternating-current power into direct-current power, and supplies the direct-current power to a load. Further, the power supply device includes a buffer, a control section, a rectifier circuit, a smoothing circuit, and a switch. After a predetermined zero cross point is... Agent: Birch Stewart Kolasch & Birch

20100061129 - Switching power supply apparatus: A switching power supply apparatus employing a voltage obtained by rectifying an output from an AC power supply, as an input thereof includes a switching control circuit. The switching control circuit conducts a PFM control having a fixed ON-period of a switching device when a load is judged to be... Agent: Kanesaka Berner And Partners LLP

20100061130 - Power adapter: A power adapter includes an insulation casing. A plug module has at least one plug pin which defines a plug end protruding out of the insulation casing and an inserting end opposite to the plug end received in the insulation casing. The insulation casing receives a printed circuit board, at... Agent: Wpat, PC Intellectual Property Attorneys

03/04/2010 > patent applications in patent subcategories. listing by industry category

20100053999 - Switching mode power supply and the driving method thereof: The present invention relates to a switching mode power supply and a driving method thereof. In the present invention, a supply voltage is generated by using a start voltage that corresponds to input power, and a switching operation frequency of a power switch is changed according to an increase/decrease of... Agent: Okamoto & Benedicto, LLP

20100053998 - Switching power supply device: A switching power supply device includes: a transformer that has a primary winding and a secondary winding; a switching element connected to the primary winding of the transformer; a control circuit that controls the switching element to be turned on/off in a case where a voltage is inputted to the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100054000 - Accurate voltage regulation of a primary-side regulation power supply in continuous conduction mode operation: A power converter operates in continuous conduction mode and outputs a regulated output voltage. A feedback-derived signal is used to regulate the output voltage. The feedback-derived signal is sampled at multiple time points during an OFF cycle of a power switch. A current-sense signal is also sampled at one or... Agent: Imperium Patent Works

20100054001 - Ac/dc converter with power factor correction: A power converter is configured for usage in a power factor correction system. The power converter comprises a transformer with a primary winding and a secondary winding which isolates a primary side from a secondary side. A primary side switch is coupled to the primary winding. An isolator coupled to... Agent: Koestner Bertani LLP

20100054002 - Parallel-connected uninterrupted power supply circuit: The configurations of a parallel-connected UPS circuit are provided in the present invention. The proposed circuit includes a neutral, a battery having a positive and a negative terminals, and a plurality of PFC boost converters, each of which includes a PFC circuit including an inductor having a first terminal coupled... Agent: Volpe And Koenig, P.C.

20100054003 - Output protection circuit of a power converter: An output protection circuit used for a power converter having an operational amplifier, a diode, a number of voltage-dividing resistors, and a switch tube. In this circuit, the voltage-dividing resistors are connected in series to form a voltage-dividing network, of which one node is connected to a reference level end... Agent: Wang & Ho

20100054004 - Method and apparatus for phase current balance in active converter with unbalanced ac line voltage source: Active power converters and methods are presented for converting input electrical power to output electrical power with converter switching control in which the individual phase voltage command values are compensated according to phase line voltage imbalances to compensate the converter control to provide balanced phase currents in the presence of... Agent: Rockwell Automation, Inc./fay

20100054006 - Controlling transient response of a power supply: A method and apparatus is provided to, among other things, supply power to a load under various load conditions. Output voltage transient responses of the system, such as may be caused by transients changes in the load conditions, may be controlled through current transformation on the output in order to... Agent: Ogilvy Renault LLP (pwc)

20100054007 - Power supply apparatus with low power in standby mode: Provided is a power supply apparatus with low power in a standby mode. The apparatus includes a voltage multiplier configured to multiply an input voltage and including a first terminal through which the multiplied voltage is output and a second terminal through which a voltage lower than a voltage of... Agent: Stanzione & Kim, LLP

20100054005 - Rectifier assembly: A rotating rectifier includes diode subassemblies that each have an AC contact between two diodes, held in place by a spring clip or interference fit between an inner DC bus and an outer DC bus. The outer DC bus can also act as a housing and heat sink. Diodes and... Agent: Kinney & Lange, P.A.

20100054008 - Inductorless isolated power converters with zero voltage and zero current switching: A method of controlling an isolated switching power converter that includes a transformer with a primary side and a secondary side, at least one primary switch coupled to the primary side of the transformer and at least one synchronous rectifier coupled to the secondary side of the transformer is disclosed.... Agent: Harness, Dickey, & Pierce, P.l.c

20100054009 - Current conversion circuit: A current conversion circuit includes a control circuit, and a switch circuit. The control circuit includes a first photoelectric coupler receiving a first driving signal and outputting a first control signal, and a second photoelectric coupler receiving a second driving signal and outputting a second control signal. The switch circuit... Agent: PCe Industry, Inc. Att. Steven Reiss

20100054010 - Vehicle inverter: A method and system of inverting DC energy stored within a vehicle to AC energy sufficient for supplying appliances or other devices that traditionally receive AC energy from a wall outlet. The inverting may be executed without feedback control in that switching operations used to controller boosting and inverting the... Agent: Brooks Kushman P.C. / Lear Corporation

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