Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems

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.
  
10/02/2014 > 16 patent applications in 15 patent subcategories.

20140293656 - Dc to dc converter assembly: A DC to DC converter assembly, for connecting first and second high voltage DC power transmission networks, comprising first and second modular multilevel converters, each converter including a first converter limb having first and second limb portions, each limb portion including a least one module switchable to selectively provide a... Agent: Alstom Technology Ltd

20140293655 - Reactor, converter, and power converter apparatus: A reactor 1A of the present invention includes a sleeve-like coil 2, a magnetic core 3A having an inner core portion 31 disposed inside the coil 2 and an outer core portion 32A disposed outside the coil 2 to form a closed magnetic path with the inner core portion 31,... Agent: Sumitomo Electric Industries., Ltd.

20140293657 - Integrated converter with single-ended control, power factor correction, and low output ripple: An integrated converter with single-ended control and power factor correction includes an input unit, a boost inductor, a voltage regulator, an energy-storing capacitor, a buck-boost converter, a single-ended switch and a control unit. The voltage regulator and the buck-boost converter share the single-ended switch and the control unit in order... Agent:

20140293658 - Power converter and power conversion method: A power converter includes a switching circuit, a power conversion circuit that receives an input voltage via the switching circuit and converts the input voltage into an output voltage, an input voltage sense circuit that detects the input voltage and generates an input voltage sense signal, and a PWM controller... Agent: Murata Manufacturing Co., Ltd.

20140293659 - High-voltage generating apparatus, high-voltage power supply, and image forming apparatus: A step-up transformer includes main, auxiliary, and secondary windings. The secondary winding steps up the voltage across the main winding. A rectifier rectifies the voltage across the secondary winding into a high-voltage output. A voltage converter produces a feedback signal from the high-voltage output, the feedback signal reflecting the magnitude... Agent: Oki Data Corporation

20140293660 - Switched mode power supply: A switching power converter includes an inductor coupled to a terminal operably supplied with an input voltage. A semiconductor switch is coupled to the inductor and configured to enable and disable an input current passing through the inductor in accordance with a drive signal. A current sense circuit is coupled... Agent: Infineon Technologies Austria Ag

20140293661 - Ac/dc converter with galvanic insulation and signal corrector: An AC/DC converter comprising an input rectifier circuit connected in series with a primary winding (5) of an isolating transformer (6) and to a chopper switch (T1) driven by a control circuit (10) using pulse width modulation on the basis of a signal representative of a primary current, the isolating... Agent: Sagem Defense Securite

20140293662 - Switched mode power supply with a simplified start-up supply: A switched mode power supply (SMPS) is disclosed in which a simple primary side controller is used to send a single pulse of energy to the secondary side to switch on an output voltage controller. The pulse is sent across the main power train and a filtering arrangement is provided... Agent: Telefonaktiebolaget Lm Ericsson (publ)

20140293663 - Modular configurable multi-megawatt power amplifier: In an embodiment, a power converter includes: a plurality of power amplifier units, each having: a plurality of slice each with a power conversion module including an AC/DC/AC converter; a mains controller to control the plurality of slices; and a feedback conditioning system coupled to the mains controller; a plurality... Agent:

20140293664 - High-voltage heavy-current drive circuit applied in power factor corrector: A high-voltage heavy-current drive circuit applied in a power factor corrector, comprising a current mirroring circuit (1), a level shift circuit (3), a high-voltage pre-modulation circuit (2), a dead time control circuit (4) and a heavy-current output stage (5); the heavy-current output stage adopts a Darlington output stage structure to... Agent:

20140293665 - Damage limitation: A damage limitation approach comprising determining that a voltage produced by a rectifier circuit is indicative of a fault and consequently controlling a switch operable to bypass a resistive element of a circuit via which the rectifier circuit is supplied.... Agent: Control Techniques Limited

20140293666 - Circuit arrangement for suppressing an arc occurring over a contact gap of a switching member: The disclosure relates to a circuit arrangement for suppressing an arc occurring during a switching process, wherein a current bypass path comprises a PTC resistor connected in series with a fuse. The current bypass path is provided in parallel with a switch. The disclosure also relates to a photovoltaic power... Agent:

20140293667 - Voltage balancing system and method for multilevel converters: A method of operating a flying capacitor multilevel converter having a direct current link and a plurality of phase legs each having a plurality of flying capacitors includes employing redundant states to balance flying capacitor voltages by charging or discharging flying capacitors. The redundant states are employed by obtaining a... Agent: Genaral Electric Company

20140293668 - Hybrid ac/dc converter for hvdc applications: A power electronic converter, for connecting AC and DC networks and transferring power therebetween, comprises: first and second DC terminals for connection in use to a DC network; at least one primary converter limb extending between the first and second DC terminals and having first and second primary limb portions... Agent:

20140293669 - Method and apparatus for improved burst mode during power conversion: A method for converting DC input power into AC output power comprising operating in a continuous mode, while the DC input power is at a first level, wherein DC input power is continuously converted into AC output power and applied to an AC power grid and upon detecting the DC... Agent: Enphase Energy, Inc.

20140293670 - Method for controlling a converter: A method for controlling a converter including a resonant circuit, where the converter is controlled such that control switches are switched into a first state at the occurrence of an event that is related to a dependent variable of the converter and are switched into a second state at the... Agent:

  
09/25/2014 > 18 patent applications in 14 patent subcategories.

20140286054 - Inductive component and use: An inductive component (1a . . . 1e) with at least two coils (2 . . . 4b) in a closed main magnetic circuit (5a . . . 5j) for guiding a magnetic main flux (ΦH) penetrating all coils (2 . . . 4b) is specified. The inductive component furthermore... Agent: Brusa Elektronik Ag

20140286055 - Electric power conversion system: An electric power conversion system includes: a primary electric power conversion circuit including a primary coil connected to a connection point between a plurality of transistors; a secondary electric power conversion circuit configured similarly to the primary electric power conversion circuit and including a secondary coil corresponding to the primary... Agent: Toyota Jidosha Kabushiki Kaisha

20140286056 - Switch control circuit, power supply device comprising the same and driving method of the power supply device: The invention relates to a switch control circuit, a power supply including the same, and a method for driving the power supply. The power supply includes: a first switch; a second switch coupled in series to the first switch; a transistor coupled to a node where the first switch and... Agent: Fairchild Korea Semiconductor Ltd.

20140286057 - Switching power converting apparatus, switching controller for the same, and method of controlling a bipolar junction transistor of the same: A switching power converting apparatus includes a coil unit, a bipolar junction transistor (BJT) controlling power transfer through the coil unit, and a current sensing resistor sensing a current flowing through the BJT so as to produce a sensed voltage thereacross. A switching controller includes a current source supplying a... Agent:

20140286058 - Undervoltage protection circuit, undervoltage protection method and switching power supply: In one embodiment, an undervoltage protection circuit for a switching power supply can include: (i) an undervoltage detection circuit that determines whether an input voltage of the switching power supply is in an undervoltage state; (ii) a selection circuit configured to select a first or a second control signal to... Agent: Silergy Semiconductor Technology (hangzhou) Ltd

20140286059 - Sparse and ultra-sparse partial resonant converters: The AC portion of the input of the ultra-sparse partial resonant power converter contains three pairs of forward-conducting-bidirectional-blocking switches connected in a first direction, and two pairs of forward-conducting-forward-blocking devices connected in a second direction to the three pairs of forward-conducting-bidirectional-blocking switches. The second direction is opposite to the first... Agent:

20140286060 - Electric vehicle: An electric vehicle includes: a main battery; an electric power converter configured to convert power to driving power of a drive motor; an auxiliary battery configured to supply power to auxiliaries; a power supply harness connecting the auxiliary battery to the auxiliaries; a step-down converter having an output end connected... Agent: Toyota Jidosha Kabushiki Kaisha

20140286061 - Circuit device and electronic apparatus: An electronic circuit includes a failure detection circuit that detects an abnormality of the gate potential of a transistor of a bridge circuit. The failure detection circuit monitors an output voltage of a drive circuit that is to be the gate potential of the transistor of the bridge circuit and,... Agent: Seiko Epson Corporation

20140286062 - Rectifying module, electrical apparatus thereof, and rectifying method thereof: An exemplary embodiment of the present disclosure illustrates a rectifying module, which is operable for rectifying an alternating current (AC) signal into a direct current (DC) signal. The rectifying module includes a transmission line, at least one rectifying unit, and at least one pattern. The transmission line is configured for... Agent: National Taiwan University

20140286063 - Rectifier and method for controlling the same: According to one embodiment, a rectifier includes a rectifying device, a control element and a controller. The control element is serially connected to the rectifying device. The control element has a resistance value that changes according to a control signal. The controller generates the control signal according to a change... Agent: Kabushiki Kaisha Toshiba

20140286064 - Capacitor device and electrical power conversion device: A capacitor device includes: a film capacitor element that comprises a coiled body in which an insulating layer and an electrification layer are laminated and wound together, and a pair of collector electrodes that are formed upon two opposite end faces of the coiled body; a case that comprises a... Agent: Hitachi, Ltd.

20140286065 - Electronic sine wave transformer: There is provided an electronic sine wave transformer circuit configuration for transferring power from a source to a load using magnetic storage coupling, the circuit comprising: an input node adapted to receive an input alternating current power source having an input voltage operating at an input frequency in a Hertz... Agent:

20140286068 - Differential mode and common mode choke: e

20140286069 - Drive device for power converter and driving method of power converter: A drive device driving a power converter that includes a switching element formed from a wide bandgap semiconductor, includes a PWM-signal output unit that generates a drive signal that drives the switching element with PWM; an on-speed reducing unit that, when the switching element is changed from off to on,... Agent: Mitsubishi Electric Corporation

20140286066 - Gate driving device and inverter having the same: There is provided a gate driving device, including: an inverter arm including a high-side switch and a low-side switch; a gate driving unit receiving an instruction signal to provide switching control to the inverter arm, outputting a control signal to control switching of the inverter arm, and including a plurality... Agent:

20140286067 - Inverter device: An inverter device includes; a switching element; a plurality of flyback diodes each connected in parallel with the switching element; a first conductor plate connected to anode terminals of the flyback diodes and to one side of the switching element; and a second conductor plate connected to cathode terminals of... Agent: Hitachi, Ltd.

20140286070 - Power conversion device: A power conversion device (1) of the present invention includes a power module (4) for converting direct current electricity to alternating current electricity, first and second power supply buses (5, 6) connecting input terminals (12, 13) and the power module (4), and a metal casing (7) for housing the first... Agent:

20140286071 - Power conversion device having battery heating function: A power conversion device having a battery heating function includes a battery, a converter, a temperature sensor, and a controller. The converter is coupled between the battery and a DC link. The temperature sensor measures a temperature of the battery. The controller controls the converter based on the temperature measured... Agent:

  
09/18/2014 > 83 patent applications in 42 patent subcategories.

20140268888 - Converter bridge arm suitable for high-voltage applications and application system thereof: A converter bridge arm suitable for high-voltage applications and an application system thereof. The converter bridge arm comprises an energy storage capacitor (C) and a plurality of reverse-conducting switches, and is formed by serial connection of an upper telescopic arm (Bu), a lower telescopic arm (Bd) and an inductor (Lb).... Agent:

20140268889 - Devices and methods for compensating for a voltage imbalance within a power supply: Example devices and methods for compensating for a voltage imbalance within a power supply are provided. In one example, a device comprises a plurality of transformers coupled in series and having respective outputs coupled together, and the plurality of transformers are configured to receive an input voltage. Transformers of the... Agent: Asco Power Technologies, L.p.

20140268890 - Wide output voltage range switching power converter: A switching power converter includes a voltage source that provides an input voltage Vin to an unregulated DC/DC converter stage and at least one buck-boost converter stage to produce a desired output voltage Vout. The unregulated DC/DC converter stage is adapted to provide an isolated voltage to the at least... Agent:

20140268892 - Converter with adjustable output voltage: A converter with adjustable output voltage is coupled to a first power source and a second power source. The converter comprises a transformer, a first conversion circuit, a second conversion circuit, a resonant circuit and a regulating circuit. The first conversion circuit has a plurality of first switch elements, each... Agent: Voltronic Power Technology Corp.

20140268894 - Dc-dc converter: A DC-DC converter includes smoothing capacitors, switching circuits and capacitor circuits at a primary-side and a secondary-side of a high frequency transformer respectively. When a midpoint voltage of the capacitor circuit is detected by a voltage detection unit, a timing signal output unit is configured to supply to a drive... Agent: Kabushiki Kaisha Toshiba

20140268898 - Efficient resonant topology for dc-ac inversion with minimal use of high frequency switches: System and apparatus for power conversion. In one embodiment, the apparatus comprising a DC stage, comprising a resonant circuit, for generating a high-frequency resonant current; and an AC stage for converting a high-frequency current, generated from the high-frequency resonant current, to an AC output current, wherein the AC stage comprises:... Agent: Enphase Energy, Inc.

20140268897 - Method and apparatus for determining a bridge mode for power conversion: A method and apparatus for controlling power conversion. In one embodiment, the method comprises computing a ratio based on both voltage and charge pertaining to power conversion in a resonant converter; comparing the ratio to a threshold; and controlling, independent of switching frequency of the resonant converter, power output from... Agent: Enphase Energy, Inc.

20140268893 - Method and apparatus for soft switching welding type power: A method and apparatus for providing welding type power is disclosed. It includes having a switched preregulator, where the preregulator is soft switched, and the components used to implement the soft switching are protected.... Agent: Illinois Tool Works Inc.

20140268895 - Mixed semiconductor h-bridge power converters and methods related thereto: This disclosure provides systems, methods and apparatus for power converters and particularly power converters for wireless power transfer to remote systems such as electric vehicles. In one aspect, the disclosure provides an electronic power supply. The electronic power supply includes at least first and second half-bridge circuitries. The first half-bridge... Agent: Qualcomm Incorporated

20140268891 - Multiphase dc/dc converters: A multiphase DC/DC power converter includes an input, an output, at least a first converter and a second converter coupled in parallel between the input and the output, an inductor coupled to the first and second converters, an output capacitor coupled between the first and second converters and the output,... Agent:

20140268896 - Reactor apparatus and power converter using same: A reactor apparatus 10 includes two yoke iron cores 11a, 11b disposed opposite each other, a plurality of magnetic leg iron cores 31 each of which has a coil 21 wound therearound and provided with a gap adjusting means 5a, 5b, and one or more zero-phase magnetic leg iron cores... Agent: Hitachi Ltd.

20140268899 - Switching power supply device: A primary side resonant circuit is formed by a primary side resonant inductor and a primary side resonant capacitor, and secondary side resonant circuits are formed by secondary side resonant inductors and secondary side resonant capacitors. Equivalent mutual inductances and equivalent mutual capacitances are formed through electromagnetic field resonant coupling... Agent: Murata Manufacturing Co., Ltd.

20140268900 - Power supply with continuous spread-spectrum switching signal: A switched-mode power supply with reduced electromagnetic interference (EMI) is described. This switched-mode power supply includes a modulation circuit that continuously frequency modulates a control signal over a bandwidth associated with a spread-spectrum modulation signal. By frequency modulating the control signal in the switched-mode power supply, spectral content associated with... Agent: Apple Inc.

20140268901 - Power management integrated circuit partitioning: A switched mode power converter includes a feedback mechanism by which a coded train of pulses with well defined integrity is generated on a secondary side of the power converter and transmitted to the primary side for decoding and application by a waveform analyzer to regulate the power converter output.... Agent: Flextronics Ap, LLC

20140268906 - Interleaved llc converters and current sharing method thereof: Methods and systems for current sharing using interleaved LLC power converters are described herein. The method provides for current sharing between a first LLC power converter interleaved with a second LLC power converter. The method includes determining an expected output voltage for at least one of the first and second... Agent: General Electric Company

20140268904 - Methods and systems for calibrating a resonant converter: Methods and systems for calibrating an inductor-inductor-capacitor (LLC) resonant converter are provided herein. The method includes calculating input voltage mathematically as a function of at least one of an output voltage, a load current, and tolerances of components of the LLC resonant converter and operating the LLC resonant converter in... Agent: General Electric Company

20140268905 - Methods and systems for improving load transient response in llc converters: Methods and systems for improving load transient response in LLC converters are provided herein. The method includes coupling a current sensing circuit to an output of the LLC converter, sensing load current of the LLC converter, and increasing a setpoint voltage for a power factor correction (PFC) circuit output based... Agent: General Electric Company

20140268907 - Multiphase converter with active and passive internal current sharing: A multiphase DC-DC converter includes multiple groups of first and second LLC power trains coupled in parallel which collectively provide an output voltage to a load. A voltage feedback control loop senses an output voltage for the LLC converter and generates an identical reference current signal for each of the... Agent:

20140268902 - Single stage boost-asymmetric llc: An AC/DC power converter utilizing a single stage boost-asymmetric LLC topology is disclosed. The converter uses a combined pulse width modulation (PWM) and frequency modulation (FM) to achieve dual control for a single main magnetic element (transformer). The transformer provides an output voltage regulation throughout the primary-secondary isolation operating in... Agent:

20140268903 - System and method for a switched-mode power converter: In accordance with an embodiment, a power converter includes an H-bridge switching arrangement, a transformer having a primary winding coupled to an output of the H-bridge switching arrangement, a first switch coupled between a power input of the H-bridge switching arrangement and a first power supply node, and a second... Agent: Infineon Technologies Ag

20140268908 - Converter topologies: Inverter topologies for converting an input direct current (DC) waveform from a DC source to an output alternating current (AC) waveform are disclosed. In some disclosed embodiments, an inverter may include a full bridge LLC resonant converter, a first boost converter, and a second boost converter. In such embodiments, the... Agent:

20140268910 - Coupled inductor dc step down converter: A step down power converter include a switch, an inductor, a diode, a capacitor, and a winding magnetically coupled to the inductor. The diode, the inductor and the capacitor are coupled in series, and the transistor, the coupled winding and the capacitor are coupled in series. An output voltage Vout... Agent:

20140268909 - Methods and systems for control of dc-dc converters: Switching regulator methods and systems for supplying output current at a regulated voltage level to a load. The regulator has a primary side that is galvanically isolated from a secondary side. The regulator includes a transformer having a primary winding on the primary side and a secondary winding on the... Agent: Linear Technology Corporation

20140268911 - Power management integrated circuit partitioning with dedicated primary side control winding: A switched mode power converter having a feedback mechanism by which a coded train of pulses with well defined integrity is generated on a secondary side of the power converter and transmitted to a dedicated control signal winding on the primary side for decoding and application to regulate the power... Agent:

20140268912 - No load detection and slew rate compensation: The power regulation control circuit is implemented during two modes. A first mode is a sleep mode and a second mode is a wake-up mode. During the sleep mode, the power supply detects a no-load presence and artificially increases the output voltage Vout to its maximum allowable value. In some... Agent:

20140268913 - Adaptive peak power control: A switching power converter includes a controller configured to transition from a first operating mode to a second operating mode by determining the operating conditions at the transition point between the operation modes. The controller uses the value of the voltage-time product determined at the boundary between the first and... Agent:

20140268914 - Method of controlling synchronous rectifier for power converter, control circuit, and power converter thereof: A method for controlling a synchronous rectifier for a power converter, a control circuit, and a power converter thereof are provided. The method comprises the following steps: turning on a transistor by a rectifier; generating a switching-period signal in accordance with a period of a voltage-sensing signal; generating a turn-on-period... Agent: System General Corp.

20140268916 - Energy-saving control device: An energy-saving control device is disclosed. The control device is connected with an integrated circuit (IC) and a secondary winding of a transformer of a power converter. A primary winding of the transformer receives energy, and then the energy is discharged from the secondary winding and an energy signal of... Agent: Sync Power Corporation

20140268915 - Powering a synchronous rectifier controller: The embodiments herein describe a switched mode power converter. In particular, the embodiments herein disclose a method for powering a synchronous rectifier controller that enables synchronous rectification in the switched mode power converter. The synchronous rectifier controller may be enabled by a regulator circuit or directly from the output voltage.... Agent: Iwatt Inc.

20140268917 - Isolated error amplifier for isolated power supplies: A power converter may include an amplifier that generates an error signal, a modulator that generates a modulated error signal, an isolator that generates an isolated modulated error signal, and a demodulator that generates an isolated error signal, which may be substantially proportional to the difference between the output signal... Agent: Analog Devices Technology

20140268918 - Led power supply: A method can be used for controlling the switching operation of a switching power converter that includes a semiconductor switch coupled in series to an inductor. The switching power converter consumes an input current from a power supply and provides an output current to a load. In each switching cycle... Agent:

20140268919 - Switching power converter with secondary to primary messaging: A primary-only power supply enables transmission of a signal or message from the secondary side of an isolated power supply to the primary side. To enable robust detection of the message without interfering with primary side sensing for output regulation, a configurable impedance current path is configured between the primary... Agent: Iwatt Inc.

20140268920 - Systems and methods for flyback power converters with switching frequency and peak current adjustments: System and method for regulating a power converter. The system includes a comparator configured to receive a first signal and a second signal and generate a comparison signal based on at least information associated with the first signal and the second signal. The first signal is associated with at least... Agent: Quangzhou On-bright Electronics Co., Ltd.

20140268921 - Topology detection: Driver circuits comprise power converters detecting automatically a topology used by the driver circuits. A controller controls a plurality of different types of power converters in accordance to a corresponding plurality of different operation modes. The controller comprises a measurement pin coupled to a first topology resistor of a first... Agent: Dialog Semiconductor Gmbh

20140268924 - Control circuit for flyback power converter and calibration method thereof: A control circuit of a flyback power converter includes a first reference signal generating circuit for generating a first reference signal; a reference signal adjusting circuit for generating an adjustment signal according to the first reference signal and a test signal corresponding to an output voltage signal of the flyback... Agent:

20140268923 - Magnetic sensing technique for power supply systems: One embodiment includes a power supply system including a transformer comprising a primary, secondary, and auxiliary winding that are magnetically coupled. The system also includes a switch stage that generates a current through the primary winding in response to activation of a switch based on a control signal that is... Agent: Texas Instruments Incorporated

20140268922 - Switched mode power converter controller with ramp time modulation: A controller for use in a power converter includes a drive circuit coupled to generate a drive signal to control switching of a power switch to control a transfer of energy from a power converter input to a power converter output. The controller also includes an input for receiving an... Agent: Power Integrations, Inc.

20140268925 - Switch control circuit, switch control method and power supply device using the same: Embodiment relates to a switch control circuit, a switch control method, and a power supply using the switch control circuit. The power supply supplies power to a load using an input voltage. The switch control circuit controls a switching operation of the power switch that controls the power supply. The... Agent: Fairchild Korea Semiconductor Ltd.

20140268926 - High voltage direct current (hvdc) converter system and method of operating the same: A high voltage direct current (HVDC) converter system includes a line commutated converter (LCC) configured to convert a plurality of AC voltages and currents to a regulated DC voltage of one of positive and negative polarity and a DC current transmitted in only one direction. The HVDC converter system also... Agent: General Electric Company

20140268927 - Voltage converter systems: A voltage converter system includes a first DC-AC voltage converter that converts a first DC voltage signal to a first AC voltage signal. A DC link converts the first AC voltage signal to a second DC voltage signal. A second DC-AC voltage converter converts the second DC voltage signal to... Agent: Vanner, Inc.

20140268929 - Dc/ac converter and method of controlling a dc/ac converter: A DC/AC converter includes a DC/DC conversion stage with galvanic isolation and a DC/AC conversion stage, wherein the DC/DC conversion stage comprises a pair of first side terminals providing or receiving a first DC voltage, a pair of second side terminals providing or receiving a second DC voltage and coupled... Agent: L-3 Communications Magnet-motor Gmbh

20140268928 - Power cell bypass method and apparatus for multilevel inverter: Multilevel inverters, power cells and bypass methods are presented in which a power cell switching circuit is selectively disconnected from the power cell output, and a bypass which is closed to connect first and second cell output terminals to selectively bypass a power stage of a multilevel inverter, with an... Agent: Rockwell Automation Technologies, Inc.

20140268930 - Power supply method and apparatus: A method and apparatus for providing a power supply for an amplifier is provided. The power conversion is achieved using synchronous rectifiers in a regulated half bridge power supply, taking the sum of the positive and negative rails as feedback, in order facilitate energy transfer between positive and negative output... Agent: Rgb Systems, Inc.

20140268932 - Dc-ac inverter with soft switching: Provided are single phase and multiple phase DC-AC inverters with soft switching, and related methods and uses. The DC-AC inverters comprise at least one voltage source inverter circuit or at least one current source inverter circuit having a DC input and an AC output including a first component at a... Agent:

20140268931 - Power conversion system with a dc to dc boost converter: A voltage booster allowing for increased utilization of low voltage, high current, unregulated DC power (“LVDC source”), such as, but not limited to, fuel cells, batteries, solar cells, wind turbines, and hydro-turbines. LVDC generation systems employing a variable low voltage DC-DC converter of the present disclosure may be used without... Agent: Combined Energies LLC

20140268933 - Filter device, power converter and common mode noise suppression method: A filter device comprises: a filter capacitor portion having one set of ends connected to the AC voltage unit, and the other set of ends connected to DC terminals of the semiconductor switching unit via a low impedance element, wherein both set of ends of the filter capacitor portion and... Agent:

20140268934 - Three-phase buck rectifier for power supplies: A three-phase alternating current (AC) to direct current (DC) converter may include a three-phase AC filter receiving a three-phase AC power supply, a plurality of three-phase current source rectifiers (CSR) connected in parallel with each other and connected to a three-phase AC filter, and an output filter connected to the... Agent: University Of Tennessee Research Foundation

20140268935 - Ac/dc converting circuit and starting method thereof: An AC/DC converting circuit and a starting method thereof are provided. An AC detection or a rectified AC voltage detection is disabled when the AC voltage or the rectified AC voltage not up to a start-up voltage is detected, so as to shorten a recovery time of a voltage of... Agent:

20140268937 - System and method for supplying power at startup: A system including a switch and a control circuit. The switch is configured to receive a first voltage. The control circuit is configured to, during a rising portion of a half cycle of the first voltage, (i) turn on the switch in response to the first voltage reaching a first... Agent: Marvell World Trade Ltd.

20140268936 - Ultra low-voltage circuit and method for nanopower boost regulator: At least one embodiment provides a method for a nanopower boost regulator to startup from an ultra-low-voltage (such as 0.3V˜0.5V) for energy harvesting applications. The method does not necessarily require a special process or any external components such as mechanical switches. The startup circuit can include an asynchronous boost circuit... Agent: Analog Devices Technology

20140268938 - Ac voltage sensor with low power consumption: A power converter controller includes an input sense circuit to receive an input sense signal representative of an input of a power converter. A zero-crossing detector is coupled to the input sense circuit to be responsive to the input sense signal falling below a first zero-crossing threshold and rising above... Agent:

20140268939 - Fault tolerant power supply incorporating intelligent gate driver-switch circuit to provide uninterrupted power: A fault tolerant power supply system includes at least one load switch configured to connect an input voltage to an output node of the load switch when the load switch is turned on and at least one power channel coupled to the load switch to receive the input voltage. The... Agent: Alpha And Omega Semiconductor Incorporated

20140268940 - Method for controlling switching branch of three-level converter and switching branch for three-level converter: Exemplary embodiments are directed to a method for controlling a switching branch of a three-level converter to enter a stop state. The switching branch including a first semiconductor switch and a second semiconductor switch, a first diode and a second diode, a third semiconductor switch and a fourth semiconductor switch,... Agent: Abb Oy

20140268942 - Interface arrangement between ac and dc systems for reliable opening of the circuit breaker in time: An interface arrangement for coupling between an AC system and a DC system. The arrangement includes a converter for conversion between AC and DC and having a DC side with a first and a second terminal for connection to the DC system and an AC side with a group of... Agent: Abb Technology Ag

20140268941 - Reactive power balancing current limited power supply for driving floating dc loads: A capacitance based reactive power balancing current limited power supply (RPBCLPS) for driving floating DC loads utilizes capacitive reactance to limit current being supplied to a load, rather than inductance. A capacitor transfers charge from an AC current input to a DC load. A fuse electrically protects the capacitor from... Agent:

20140268943 - Arc prevention in dc power systems: A power system includes a DC power source having a maximum output voltage, a DC/AC inverter having an input coupled via a connection to the DC power source and an output for supplying AC power to a load, and a control circuit for controlling the DC/AC inverter. The control circuit... Agent: Astec International Limited

20140268944 - Surge blocking inductor: A surge blocking inductor. In one embodiment, the surge blocking inductor includes a core; a first winding wound about the core in a first direction; and a second winding wound about the core in a second direction, wherein the first winding and the second winding are magnetically independent when the... Agent: Enphase Energy, Inc.

20140268945 - Reconfigurable switched capacitor power converter techniques: An apparatus for converting a first voltage into a second voltage includes a reconfigurable switched capacitor power converter having a selectable conversion gain. converter includes a cascade multiplier switched capacitor network having capacitors, each of which electrically connects to a stack node and to a phase node. A controller causes... Agent: Arctic Sand Technologies, Inc.

20140268946 - System and methods for two-stage buck boost converters with fast transient response: Various embodiments of the invention provide for single and dual phase charge pump, two stage DC/DC buck-boost converters having fast line and load transient control irrespective of load conditions. In certain embodiments of the invention, this is accomplished by controlling a desired output voltage with an error amplifier that controls... Agent:

20140268947 - Reducing phase current imbalances in single phase redundant power supply systems with unbalanced loads: A system includes first and second pluralities of single phase AC/DC power supplies each having an input for coupling to first and second phase voltages, respectively, in a polyphase power distribution system. The outputs of the power supplies are electrically connected in parallel for supplying DC current to a load... Agent:

20140268948 - Electromagnetic interference (emi) reduction in interleaved power converter: A power converter system includes an interleaved power converter having a plurality of parallel-connected phase legs between DC terminals and an AC terminal. A plurality of parallel-connected inductors are each connected to one of the plurality of parallel-connected phase legs to provide a summed output of the parallel-connected phase legs... Agent: Hamilton Sundstrand Corporation

20140268949 - Apparatus and system of power conversion: A power converter for use with an area controller system to provide electrical power to electrical devices at the shelves of retail stores. The power converter converts power from the voltage, frequency, and amperage of the area controller system to the voltage, frequency, and amperage of various electrical devices.... Agent: Tagnetics, Inc.

20140268951 - Load-selective input voltage sensor: A power converter controller includes a switch driver circuit coupled to generate a drive signal to control switching of a power switch to control a transfer of energy from an input of the power converter to an output of the power converter. An input sense circuit is coupled to receive... Agent: Power Integrations, Inc.

20140268950 - System and method for calibrating a power supply: In accordance with an embodiment, a method of calibrating a power supply includes coupling a reference load to an output of the power supply, setting an output voltage of the power supply to a first output voltage, measuring a current delivered to the reference load, and determining a current metric... Agent: Infineon Technologies Austria Ag

20140268953 - Active front end power converter with boost mode derating to protect filter inductor: Methods and apparatus are presented for controlling a power converter to protect input filter inductors from overheating, in which an active front end (AFE) rectifier is operated in a boost mode to provide a boosted DC voltage at a derated output current value selected according to the DC bus voltage... Agent: Rockwell Automation Technologies, Inc.

20140268952 - Bridgeless interleaved power factor correction circuit using a pfc inductor with quad-winding on a single core: A bridgeless interleaved power factor correction (PFC) circuit using a single PFC choke having four windings formed on a single core to form the four input inductors of the PFC circuit. An AC-to-DC converter constructed using the bridgeless interleaved PFC circuit achieves high conversion efficiency with high power factor and... Agent: Xp Power Limited

20140268954 - Methods and apparatus for continuous and discontinuous active rectifier boost operation to increase power converter rating: Power conversion systems and operating methods are presented in which an active front end rectifier is operated in a boost mode using discontinuous pulse width modulation in a first range of DC bus voltage boost amount, and continuous space vector pulse width modulation is used in a second range, with... Agent: Rockwell Automation Technologies, Inc.

20140268955 - No load detection: A power regulation control circuit is implemented as part of a power converter. The power regulation control circuit is implemented during two modes, a sleep mode and a wake-up mode. During the sleep mode, the power regulation control circuit detects a no-load presence and artificially increases the output voltage Vout... Agent:

20140268956 - Power converter with self-driven synchronous rectifier control circuitry: An AC-DC power converter is provided with two pairs of self-driven synchronous rectifier switches in addition to, or in place of, diode bridge rectifiers for boosting efficiency and reducing cost. An AC sensing circuit is coupled to AC input terminals, and a DC level shifting circuit applies a DC offset... Agent:

20140268957 - Single phase power system controller and method therefor: Provided herein is a single phase power system controller and a method for controlling a single phase power system. The single phase power system controller comprises an error signal generator that generates an error signal from an instantaneous power reference signal and a measured instantaneous output power signal corresponding to... Agent: Sparq Systems Inc.

20140268958 - Inverter communications using output signal: Technologies for communicating information from an inverter configured for the conversion of direct current (DC) power generated from an alternative source to alternating current (AC) power are disclosed. The technologies include determining information to be transmitted from the inverter over a power line cable connected to the inverter and controlling... Agent:

20140268959 - Bidirectional power converter: A bidirectional power converter that can be used in an electric vehicle to perform AC to DC power conversion to charge the electric vehicle's battery and to perform DC to AC power conversion to export power to run external electrical loads is described. The bidirectional power converter may include an... Agent: Engineered Electric Company

20140268961 - Method and apparatus for distributed power generation: A method and apparatus for generating AC power. In one embodiment, the apparatus comprises a DC/AC inversion stage capable of generating at least two of a single-phase output power, a two-phase output power, and a three-phase output power; and a conversion control module, coupled to the DC/AC inversion stage, for... Agent: Enphase Energy, Inc.

20140268960 - Method and system for power conversion: A method and system for a control circuit are provided. The circuit includes an integrating counter coupled to a process wherein the integrating counter is configured to integrate over time a process parameter signal received from the process and to generate a trigger signal when the integrated signal equals a... Agent:

20140268962 - Hybrid dc/ac inverter: A hybrid DC/AC inverter for converting DC power to AC power feed to a grid voltage system has an input circuit, a half/full bridge switchable circuit and an output circuit. The input circuit has two input terminals for connecting to a DC source and outputs the DC power. The half/full... Agent: Cyber Power Systems Inc.t

20140268963 - Dc voltage conversion circuit: Aspects of the invention relates to a DC voltage conversion circuit including: a DC power supply; a switching device which is connected to two ends of the DC power supply through an inductor, and a series circuit which is connected in parallel with the switching device and which includes a... Agent: Fuji Electric Co., Ltd.

20140268964 - Multi-stage programmable rectifier with efficiency tracking: Examples of multi-stage programmable rectifiers are provided herein. Each rectifier stage can include a first transistor and a switch connected to the first transistor. A threshold voltage of the first transistor can be programmed through selection of one of a plurality of voltages available at the switch. Each rectifier stage... Agent: The State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Orego

20140268966 - High-voltage inverter: An inverter includes transformers having identical characteristics. Exciting windings of the transformers are connected in parallel so that the transformers are excited simultaneously. Output windings of the transformers are connected in series so that waveforms of output voltages of the output windings are time-synchronized. Each transformer includes a core having... Agent: Ricoh Company, Limited

20140268965 - Multi-level inverter: A multi-level inverter having at least two banks, each bank containing a plurality of low voltage MOSFET transistors. A processor configured to switch the plurality of low voltage MOSFET transistors in each bank to switch at multiple times during each cycle.... Agent: Solaredge Technologies Ltd.

20140268967 - Electromagnetic interference (emi) reduction in multi-level power converter: A multi-level power converter system includes a multi-level power converter configured to synthesize at least three direct current (DC) voltages into an alternating current (AC) output voltage, and includes a plurality of transistors. A controller generates pulse-width modulation (PWM) signals used to control a state of the plurality of transistors... Agent: Hamilton Sundstrand Corporation

20140268968 - Transformer for an inverter system and an inverter system comprising the transformer: A transformer comprises a primary winding 231; a secondary winding 233; a first electrostatic screen 234 located between the primary winding and the secondary winding and most proximate to the primary winding means; and a second electrostatic screen 235 located between the primary winding and the secondary winding means and... Agent: E2v Technologies (uk) Limited

20140268969 - Power pole inverter: An arm assembly is provided. The arm assembly includes a heat exchanger assembly, a plurality of electrical components thermally coupled to the heat exchanger assembly, and a number of electrical buses. Each electrical component is coupled to, and in electrical communication with, one electrical bus. A sealing compound is then... Agent: Eaton Corporation

20140268970 - Matrix converter and method for controlling matrix converter: A matrix converter according to an embodiment includes a power converter having a plurality of bidirectional switches, a controller, and a current detector. The controller controls the power converter. The correct detector detects a current flowing to an output side of the power converter. The controller extracts a high-frequency component... Agent: National University Corporation Nagaoka University Of Technology

  
09/11/2014 > 62 patent applications in 21 patent subcategories.

20140254200 - High resolution rectifier suitable for low voltage signals: A high resolution rectifier suitable for low voltage signals includes a signal input end connected to a signal source for inputting an original AC current; two amplifiers; one receiving the original AC current from a positive end; and the other receiving the AC current from a negative end; amplification factors... Agent:

20140254201 - Power supply for prolonging hold-up time: A power supply for prolonging a hold-up time includes a main power supply system, and a hold-up power supply system connected in parallel to a power factor correction unit in the main power supply system. The hold-up power supply system includes an isolation transformer element connected to the power factor... Agent: Zippy Technology Corp.

20140254202 - Low threshold voltage comparator: A voltage comparator includes an amplifier coupled to receive an input signal at an amplifier input and generate an output signal at an amplifier output in response to the input signal. The amplifier includes a current generation circuit coupled to generate a first current flowing through a first branch and... Agent: Power Integrations, Inc.

20140254205 - Dc to dc converter assembly: A DC to DC converter assembly, for connecting first and second high voltage DC power transmission networks, comprises an inverter which has first and second terminals which are connectable in use to a first high voltage DC power transmission network. The inverter is defined by a modular multilevel converter which... Agent:

20140254204 - Half-bridge dc/dc converter with asymmetric pulse controlling process: A half-bridge dc/dc converter includes a first converter receiving a current and generating a first resonant current; a transformer connecting to the first converter, receiving the first resonant current and generating a second resonant current; and a second converter connecting to the transformer, receiving the second resonant current; wherein the... Agent: Chung Shan Institute Of Science And Technology, Armaments Bureau, M.n.d

20140254203 - Resonant converters: A resonant tank comprises a resonant inductor coupled to a switching network and a transformer, a resonant capacitor coupled to the switching network and the transformer, a first parallel inductor implemented as a magnetizing inductance and a second parallel inductor implement as a separate inductor, wherein a first inductance of... Agent: Futurewei Technologies, Inc.

20140254206 - Reverse current control for an isolated power supply having synchronous rectifiers: In certain example embodiments, a system is provided that includes a circuit. The system also includes a reverse current control module that provides an isolated power supply in order to protect one or more devices in a power chain during one or more testing activities having one or more requirements.... Agent: Analog Devices Technology

20140254207 - Switching power supply device: In a switching power supply device, a voltage of a counter electromotive force induced in a drive winding as a high side switching element is turned off is output to a ZT terminal of a switching control IC, and thus an OUT terminal of the switching control IC is brought... Agent: Murata Manufacturing Co., Ltd.

20140254208 - Auxiliary resonant apparatus for llc converters: A resonant tank comprises a series resonant inductor coupled to a switching network and a transformer, a series resonant capacitor coupled to the switching network and the transformer, a first parallel inductor implemented as a magnetizing inductance of the transformer, a second parallel inductor implement as a separate inductor, wherein... Agent: Futurewei Technologies, Inc.

20140254209 - Electric power conversion system: An electric power conversion system includes: a primary electric power conversion circuit including primary right and left arms; a secondary electric power conversion circuit including secondary right and left arms; and a control circuit controlling transfer of electric power between the primary and secondary electric power conversion circuits by magnetically... Agent: Toyota Jidosha Kabushiki Kaisha

20140254210 - Power supply apparatus and image forming apparatus: The power supply apparatus includes a transformer having a primary and secondary sides, a first line and a second line to which an AC voltage is input from an AC power supply, a rectifying and smoothing unit that rectifies and smoothes the AC voltage, a shut-off unit provided between the... Agent: Canon Kabushiki Kaisha

20140254215 - Controller for a power converter and method of operating the same: A control system for a power converter with reduced power dissipation and method of operating the same. In one embodiment, the control system includes a first controller coupled to a primary winding of a transformer and configured to control a duty cycle of a power switch to regulate an output... Agent: Power Systems Technologies Ltd.

20140254213 - Power converter output voltage clamp and supply terminal: A secondary control circuit includes a voltage regulator circuit to be coupled to an output of a power converter to provide a regulated power supply. One or more switched loads is coupled between a first terminal to be coupled to the output of the power converter and an output ground... Agent: Power Integrations, Inc.

20140254212 - Power converter using multiple controllers: A power converter controller includes a primary controller and a secondary controller. The primary controller is coupled to receive one or more request signals from the secondary controller and transition a power switch from an OFF state to an ON state in response to each of the received request signals.... Agent: Power Integrations, Inc.

20140254211 - System and method for information communication between electrically isolated circuits: An exemplary power conversion system includes a power converter and a protection circuit coupled with the power converter. The power converter is configured to convert an input power into an output power. The power converter includes an isolator magnetically coupling a primary side and a secondary side and at least... Agent: General Electric Company

20140254214 - Techniques for controlling a power converter using multiple controllers: A power converter controller includes a primary controller that is galvanically isolated from a secondary controller. The primary controller controls a state of a power switch during a first mode of operation according to a switching pattern defined by the primary controller. During a second mode of operation, the primary... Agent: Power Integrations, Inc.

20140254216 - Method and apparatus for feeding electrical current into an electrical power supply system: The invention relates to a method for feeding electrical current into an electrical, three-phase power supply system having a first phase, a second phase and a third phase with a first voltage, a second voltage and a third voltage at a power supply system frequency, comprising the steps of: measuring... Agent: Wobben Properties Gmbh

20140254217 - Method and apparatus for ripple and phase loss detection: Methods and apparatus are presented for detecting phase loss and/or excessive ripple in a power converter, in which bandpass filters are used to obtain harmonic voltage amplitudes associated with the power converter DC bus, and phase loss is detected if a ratio of the second harmonic to the sixth harmonic... Agent: Rockwell Automation Technologies, Inc.

20140254218 - Voltage adaptor for ac-dc power supply modules: A circuit for connecting lower AC voltage-rated AC-DC power supplies with higher voltage power sources. A power line matching transformer connecting the source to the power supplies needs only to support the self-dissipation and output current mismatch between supplies. The circuit can also protect the line matching transformer from overheating... Agent: Transistor Devices, Inc. D/b/a Tdi Power

20140254219 - Power conversion system: A power conversion system comprising a plurality of modules each having an input and an output and being connected in series. Each module is connected to at least one DC power source that supplies power to the module. Voltage control circuitry provided within each of the modules to vary the... Agent:

20140254220 - Electronic power converter with ground referenced lossless current sensing: A current sensing circuit for an electronic power converter having an inductor that is not referenced to ground is configured to provide an output signal that is referenced to ground and is proportional to the current flow between the inductor and a load in an electrical power system. The current... Agent: Cooper Technologies Company

20140254221 - Constant power inverter with crest factor control: An electrosurgical generator is provided. The generator includes a DC-DC buck converter configured to output a DC waveform, the DC-DC buck converter including at least one first switching element operated at a first duty cycle; a DC-AC boost converter coupled to the DC-DC buck converter and including at least one... Agent: Covidien Lp

20140254222 - Method for operating a drive control facility and drive control facility operating according to said method: A method is disclosed for the regenerative operation of a drive control facility, which includes an inverter with semiconductor switches controllable by control signals. A control logic for each control signal determines a control signal time instant and each of the semiconductor switches is controlled by a corresponding control signal... Agent: Siemens Aktiengesellschaft

20140254223 - Method and system for a high speed soft-switching resonant converter: A high power and high frequency resonant converter topology and control system operates in a configuration and mode that significantly reduces the voltage on the solid-state switches while retaining the soft switching features.... Agent:

20140254225 - Method for operating an inverter and inverter operating according to the method: A method for operating an inverter and an inverter operating according to the method is disclosed, wherein the inverter is controlled in accordance with line-angle-specific control sets provided in a database, wherein a switchover from one control set to the next control set can be performed only in a direction... Agent: Siemens Aktiengesellschaft

20140254224 - Rectifier circuit: A rectifier circuit includes a bridge circuit configured to receive an alternating input signal. A parallel resonant circuit is coupled between the bridge circuit and an output. The circuit could also include a capacitive storage element coupled to the output and configured to provide an output signal.... Agent: Infineon Technologies Ag

20140254227 - Decentralized power generation plant having a device and method for detecting an island network: The invention relates to a device and to a method for monitoring a decentralized power generation plant for feeding into a three-phase network in order to prevent undesired island network operation, wherein the power generation plant has an inverter, which produces three alternating currents phase-shifted from each other from an... Agent:

20140254226 - Power conversion device: An inexpensive and space-saving power conversion device is provided which can eliminate a high-cost and large reactor like a buffer reactor. A device includes multiple switching elements 21u, 21x performing conversion between DC and AC upon switching, a unitary unit C including the switching elements 21u, 21x, and a capacitor... Agent: Kabushiki Kaisha Toshiba

20140254229 - Modular high-frequency converter and method for operating the same: A modular high-frequency converter includes submodules, each having an input-side half bridge and a DC link circuit with a DC link capacitance connected in parallel to the half bridge. A DC link circuit voltage drop across the DC link capacitance of each submodule is controlled to a target voltage by... Agent: Siemens Aktiengesellschaft

20140254228 - Three-level converter: A three-level converter includes at least one phase bridge arm, each including an upper-half and a lower-half bridge arm circuit modules. The upper-half bridge arm circuit module includes a first and a second switch units that are in series connection, and a first diode unit. The lower-half bridge arm circuit... Agent:

20140254230 - Matrix converter and control method therefor: Provided is a matrix converter including a power converter, a commutation controller, and a compensator. The power converter includes a plurality of bidirectional switches. The commutation controller performs one of a three-step commutation operation and a four-step commutation operation by the bidirectional switches as a switch source and the bidirectional... Agent: Kabushiki Kaisha Yaskawa Denki

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