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.
05/21/2015 > 24 patent applications in 18 patent subcategories.

20150138837 - Magnetic balanced converter with isolation barrier: A converter with at least one primary side having a first set of coils magnetically coupled to at least one secondary side having at least a second set of coils, wherein the primary side is electrically isolated from the secondary side by an isolation barrier, wherein one of the secondary... Agent: Pr Electronics A/s

20150138838 - Method and apparatus for offline switch mode power supply with dithered switching frequency: A circuit for use in a switched mode power supply comprising includes an integrated circuit, a transformer, a capacitor, a low voltage circuit and a current limiting resistor. The IC jitters the switching frequency of the switch based on a bias voltage of the integrated circuit. The IC also includes... Agent:

20150138839 - Forward converter with self-driven bjt synchronous rectifier: An AC-to-DC converter circuit includes DC-to-DC converter that in turn includes a secondary side circuit. The secondary side circuit includes a secondary winding, a pair of bipolar transistor-based self-driven synchronous rectifiers, a pair of current splitting inductors, and an output capacitor. Each of the synchronous rectifiers includes a bipolar transistor... Agent: Ixys Corporation

20150138841 - High efficiency dc/dc converter and controller: Systems, methods, and devices for use in a DC/DC converter. A circuit uses a full-bridge power semiconductor subcircuit along with a high power transformer subcircuit, a diode bridge subcircuit, and a parallel capacitor to provide galvanic isolation and boost the voltage from a power source such as a photovoltaic panel.... Agent:

20150138840 - Power conversion apparatus and power correction method: The power correction method corrects transmitted power, which is transmitted between a primary side circuit and a secondary side circuit which is connected to the primary side circuit via a reactor and magnetically coupled with the primary side circuit via a transformer and is adjusted according to a phase difference... Agent: Toyota Jidosha Kabushiki Kaisha

20150138843 - Electric-power conversion device: A DC/DC conversion circuit is configured with a first power converter and a second power converter that are connected through an insulation transformer, and performs power transition bidirectionally between two DC-voltage sources. In the case of charging the DC-voltage source in the side where the second power converter is placed,... Agent: Mitsubishi Electric Corporation

20150138842 - Method for controlling a power source, and power source and process controller therefor: A method for controlling a power source is specified. The power source comprises a first converter (1) for converting an input voltage (UE) to an intermediate circuit voltage (UZK, UZK1), an intermediate circuit capacitor (2) and a second converter (3) for converting the intermediate circuit voltage (UZK, UZK1) to an... Agent: Fronius International Gmbh

20150138846 - Constant current control circuit for power converter and constant current control method thereof: A constant current control circuit includes a sample and hold unit coupled to a current sensing resistor of a power converter, for storing a current sensing voltage of the current sensing resistor; a first capacitor for storing a comparison voltage; a discharge unit coupled between the sample and hold unit... Agent:

20150138847 - Converter: A converter may include a transformer; a first circuit arrangement coupled to a first transformer side; a second circuit arrangement coupled to a second transformer side, wherein the second circuit arrangement is configured to provide an output voltage; a first coupler configured to provide information about the output voltage to... Agent:

20150138845 - Dc/dc converter, operation method thereof and electronic apparatus: A DC/DC converter includes: a transformer; a main MOS transistor connected in series between a primary side inductance of the transformer and a ground potential; a synchronous rectification MOS transistor connected in series between a secondary side inductance of the transformer and the ground potential; a refluxing MOS transistor connected... Agent:

20150138844 - Switched mode power supply with improved light load efficiency: A control circuit operable to control the switching of switching elements in a switched mode power supply. The control circuit comprises a switching control signal generator operable to generate control signals for switching the switching elements such that the switched mode power supply converts an input voltage (Vin) to an... Agent:

20150138848 - System and method to reduce the energy storage requirements of a cascaded converter system: A method and system for controlling a cascaded converter has an upstream converter and a downstream converter coupled in series. An energy storage element is provided between the two converters for providing constant energy and to respond to a load step in the load of the system. An upstream controller... Agent:

20150138850 - Power conversion circuit and method for controlling direct current-alternating current circuit: A power conversion circuit includes: an AC-DC circuit, a direct current-alternating current DC-AC circuit, and a first filter capacitor. The DC-AC circuit includes: a third bridge arm, a fourth bridge arm, a first inductor, a second inductor, a first switch transistor, and a second switch transistor, a second end of... Agent:

20150138849 - Pre-charging circuit of inverter: A pre-charging circuit of inverter is disclosed, the pre-charging circuit of inverter including a relay arranged between an output node of the rectifier and an input node of the DC-link capacitor, and a pre-charging resistor arranged between an output node of the rectifier and an input node of the inverter... Agent: Lsis Co., Ltd.

20150138851 - Power supply apparatus: A PFC circuit generates substantially sinusoidal current that is in-phase with AC input voltage to compensate for a power factor. A DC-DC converter converts the voltage of a signal outputted from the PFC circuit to determined voltage. A current change detection section detects an amount of change in current outputted... Agent:

20150138852 - Overload limitation in peak power operation: An exemplary method for operating a converter to supply electrical power to a load includes controlling the converter for a provided overload time so that overload power is applied to the load, and controlling the converter for a provided resting time, so that resting power is applied to the load.... Agent: Abb Technology Ag

20150138853 - Under-voltage protection circuit for programmable power supplies: A control circuit of a power supply is provided. The power supply includes a current-sense circuit, a voltage-sense circuit, an output voltage regulation circuit, and a current regulation circuit. The current-sense circuit generates a current-sense signal in response to an output current of the power supply. The voltage-sense circuit generates... Agent:

20150138854 - Apparatus and method for detecting output phase deficiency in inverter: An apparatus and a method for detecting phase deficiency in an inverter is provided, the method including deciding whether a sector of the output current is a sector where current detection is possible based on switching operation status of the switching element in the inverter, maintaining a phase deficiency variable... Agent: Lsis Co., Ltd.

20150138855 - Apparatus for controlling paralleled inverter: An apparatus for controlling paralleled inverter is disclosed. In the apparatus for controlling paralleled inverter, one synchronization signal is shaped by at least two inverters to respectively transmit a voltage command and an operation command.... Agent: Lsis Co., Ltd.

20150138856 - Power factor correction autodetect: A power supply system includes an Offline Total Power Management Integrated Circuit (OTPMIC). The OTPMIC controls a Power Factor Correction (PFC) converter, a main AC/DC converter, and a standby AC/DC converter. A PFC Autodetect circuit in the OTPMIC monitors current flow in the PFC converter. If a high power condition... Agent: Active-semi, Inc.

20150138857 - Method for estimating power of a power converter: A controller for estimating a power of a power converter and method of estimating the same has been introduced herein. In one embodiment, the controller includes an analog/digital converter configured to provide samples of a rectified voltage waveform corresponding to a rectified sensed voltage of the power converter. The controller... Agent: Power Systems Technologies, Ltd.

20150138858 - Driving apparatus and electric power converter: A driving apparatus of the present disclosure includes a coil including a second terminal connected to a control terminal of a switching element, a charging switch connected between a first potential line and a first terminal of the coil, a clamp switch connected between the first potential line and the... Agent:

20150138859 - System and method for power conversion: A power conversion system is presented. The power conversion system includes a power converter. The power converter includes at least two circuits, where each of the at least two circuits includes two or more phase legs, where each of the two or more phase legs includes at least two semiconductor... Agent: General Electric Company

20150138860 - Electrical device for use with a multiway switch system: Electrical devices, methods of operating an electrical device for use with a multiway switch system, and methods for connecting an electrical device with a load device and a multiway switch system for controlling the load device are described. In one embodiment, an electrical device for use with a multiway switch... Agent:

05/14/2015 > 27 patent applications in 17 patent subcategories.

20150131330 - Bidirectional dc-dc converter system and circuit thereof: The invention discloses a bidirectional dc-dc converter system and circuit thereof. In boost mode, topology is combined with interleaved two-phase boost converter for providing a higher step-up voltage gain. In buck mode, topology is combined with interleaved two-phase buck converter in order to get a higher step-down conversion ratio. The... Agent: National Tsing Hua University

20150131329 - Gate drive apparatus for resonant converters: An apparatus comprises a bridge coupled between a bias voltage and ground, wherein the bridge comprises a first switch and a second switch connected in series and coupled between the bias voltage and ground and a third switch and a fourth switch connected in series and coupled between the bias... Agent: Futurewei Technologies, Inc.

20150131328 - System and method for power conversion: A power conversion system is presented. The system includes a power source coupled to a power converter and a controller. The controller is configured to determine a value of at least one parameter corresponding to the power source. Additionally, the controller is configured to provide a first portion of the... Agent: General Eectric Company

20150131331 - Apparatus and method for supplying power: Disclosed is an apparatus for supplying power to a device. The apparatus includes a transformer configured to output a predetermined voltage to a device varying in load; a switch configured to switch on and off the voltage output from the transformer in accordance with pulse width modulation (PWM) signals; a... Agent: Samsung Electronics Co., Ltd.

20150131333 - Dc-dc converter with multiple outputs: A multiple output DC-DC converter comprises a transformer, a primary circuit, a plurality of secondary circuits, and a controller. The transformer has a primary and at least one secondary winding. The primary circuit connects to a DC power supply source and includes the primary winding of the transformer and a... Agent: Telefonaktiebolaget L M Ericsson (publ)

20150131332 - Electronic apparatus and power controlling method thereof: Disclosed are an electronic apparatus and a power controlling method thereof, the electronic apparatus including a system portion configured to operate with a received voltage, and a power supply including a pulse width modulation (PWM) generator to generate a PWM signal, a converter to transfer voltage from a primary side... Agent: Samsung Electronics Co., Ltd.

20150131335 - Power supply circuit, electronic processing apparatus, and power supply method: A power supply circuit includes: an environment detecting circuit which detects an installation environment; and a voltage control circuit which makes a report of a power supply capability by performing fluctuation control of an output voltage in response to detection information of the environment detecting circuit.... Agent:

20150131334 - Switching power supply apparatus and semiconductor device: Provided is a switching power supply apparatus that shifts to an OFF mode when electronic equipment is on standby, and includes: an OFF mode delay circuit that delays shifting to the OFF mode; and an electric storage unit and a power supply circuit that function as a power supply source... Agent:

20150131336 - Dual-edge tracking synchronous rectifier control techniques for a resonant converter: This disclosure provides control techniques for a resonant converter. In one control technique, for switching speeds that are below the resonant frequency of the primary stage of the converter, the switches of the synchronous rectifier (SR) portion (SR switches) of the resonant converter are controlled based on a rising edge... Agent:

20150131337 - Resonant isolated active pfc rectifier: A method of driving an isolated converter includes opening a first bi-directional switch on an input side of a transformer, accepting current into a resonant capacitor connected across the first bi-directional switch to reduce voltage across the first bi-directional switch in response to said opening the first bi-directional switch, reversing... Agent:

20150131338 - Power conversion apparatus: An isolated power conversion apparatus has an isolation transformer, a series circuit including a load and an inductor connected in series with each other, the series circuit being disposed on a secondary side of the isolation transformer, and one or a plurality of switching means disposed between the series circuit... Agent: Nf Corporation

20150131339 - Power conversion apparatus: An isolated power conversion apparatus has an isolation transformer, a series circuit including a load and an inductor connected in series with each other, the series circuit being disposed on a secondary side of the isolation transformer, and one or a plurality of switching means disposed between the series circuit... Agent: Nf Corporation

20150131340 - Power supply device: A power supply device may include a transformer having a primary winding receiving a rectified alternating current (AC) input power and a secondary winding electromagnetically coupled to the primary winding to supply power to a load, an auxiliary switch selectively providing the rectified AC input power to the primary winding,... Agent: Samsung Electro-mechanics Co., Ltd.

20150131341 - Converter and driving method thereof: A converter and a driving method thereof are disclosed. The converter includes a transformer, a main switch, a clamp switch, and a switching controller. Here, the switching controller controls a turn-on time of the main switch and a turn-off time of the clamp switch corresponding to an output load.... Agent:

20150131342 - Multi terminal hvdc control: An exemplary Multi-Terminal High Voltage Direct Current (MTDC) system includes at least three terminals, where each terminal including a Voltage Source Converter (VSC) controlled by a VSC controller. A method for controlling the MTDC system includes providing a converter schedule including at least one of a desired power flow value... Agent: Abb Research Ltd

20150131343 - Resistorless precharging: A boost PFC converter includes a rectifier, a converter and an output stage comprising an output capacitor where the DC output voltage is provided across the output capacitor. The rectifier includes four rectifying elements connected in a full bridge configuration where the upper two of these four rectifying elements are... Agent: Det International Holding Limited

20150131344 - Boost circuit: A boost circuit includes a power rail to provide a supply voltage, a switch transistor controlling output of a boosted signal from a source of the switch transistor, and a timing and voltage control circuit configured to generate an equalization (EQ) signal to be applied to a gate of the... Agent: Macronix International Co., Ltd.

20150131345 - Method and apparatus for minimising a circulating current or a common-mode voltage of an inverter: The present disclosure discloses a method and an apparatus implementing the method for minimising a circulating current of parallel-connected inverters. The method can include, for at least one parallel-connected inverter, measuring a common-mode voltage of the inverter, and controlling a cycle length of the switching cycle on the basis of... Agent: Abb Oy

20150131346 - Method for designing power controller, power controller, and power control device: A method including: setting a weighting function based on an amount of change in impedance of a control target; and determining, for a power controller, a transfer function composed of a transfer function of an internal model obtainable by performing Laplace transform on the voltage reference value and a transfer... Agent: Panasonic Corporation

20150131347 - Method for controlling an h-bridge inverter: The invention relates to a H-bridge inverter and a method for controlling a H-bridge converter. The H-bridge inverter (1) comprises first and second DC terminals (Tdc1, Tdc2), first and second AC terminals (Tac1, Tac2), a first switch (S1), a second switch (S2), a third switch (S3) and a fourth switch... Agent:

20150131348 - Reversible matrix converter circuit: A reversible matrix converter circuit is provided with n levels per phase including n conversion arms exhibiting on one side n ends for generating or receiving respectively n intermediate DC voltage levels, and exhibiting on another side n ends linked at a common point of AC signal input or output.... Agent:

20150131350 - Electrical power converter: This description relates to an electrical power converter including a series connection of two transistors, and provides a technology for suppressing increase in electrical current flowing through the transistors when the two transistors are turned on at the same time for some defective reason. An electrical power converter disclosed herein... Agent:

20150131351 - Modulation of switching signals in power converters: A method comprises: applying control signals to an inverter switching network according to a selected switching sequence, wherein a switching sequence is applied corresponding to a desired sector of a switching scheme in which a demand vector is currently located, the switching scheme corresponding to the demand vector in a... Agent:

20150131352 - Multi-level converter control: A method is disclosed for controlling at least four switching components of a multi-level converter. The method comprises receiving first and second control signals for controlling a dual-level inverter having two switching components, and processing the first and second received control signals to produce at least four switching component control... Agent:

20150131349 - System and method for balancing multilevel power converters: A system including a multi-level power converter is provided. The system also includes a plurality of DC link capacitors and a balancing circuit coupled to the multi-level power converter. The balancing circuit further includes two sets of interface branches. Each set includes a plurality of interface branches and a plurality... Agent: General Electric Company

20150131353 - Power supply device: According to one embodiment, a power supply device includes a main circuit board including a switching circuit, a transformer board opposite the main circuit board and including a transformer, and an intermediate cooling plate between the main circuit board and the transformer board and configured to cool at least one... Agent:

20150131354 - Ac-dc converter: According to one embodiment, an AC-DC converter includes a first printed wiring board, a planar transformer, a plurality of primary members, and a plurality of secondary members. The planar transformer has a primary coil, a secondary coil, a second printed wiring board and a core. The primary members are mounted... Agent:

05/07/2015 > 23 patent applications in 17 patent subcategories.

20150124487 - Adjustable resonant apparatus for power converters: An apparatus comprises a first series resonant inductor coupled to a switching network and a transformer, a first series resonant capacitor coupled to the switching network and the transformer, a first parallel inductor coupled to the switching network through the first series resonant inductor and the first series resonant capacitor,... Agent: Futurewei Technologies, Inc.

20150124489 - Current sensing apparatus for power converters: An apparatus comprises a magnetic device coupled to an inductor-inductor-capacitor (LLC) resonant converter, an ac current sensing circuit coupled to the magnetic device, an average current sensing circuit coupled to the ac current sensing circuit and a reference voltage source coupled to the average current sensing circuit, wherein the reference... Agent: Futurewei Technologies, Inc.

20150124490 - Electric power conversion device: A switching circuit is configured to switch on/off a current that flows through a resonance circuit constituted by a primary winding of a transformer, a capacitance element, and an inductor that are connected in series. Electric power that is induced in a secondary winding of the transformer is rectified by... Agent:

20150124488 - Startup method and system for resonant converters: A method comprises providing a resonant converter comprising a switching network comprising a plurality of switches, a resonant tank coupled between the switching network and a transformer, wherein the resonant tank comprises a series resonant inductor coupled to a switching network and the transformer and a series resonant capacitor coupled... Agent: Futurewei Technologies, Inc.

20150124491 - Power controllers and control methods thereof for switching mode power supplies: Herein is disclosed a control method suitable for a switching mode power supply. A power switch is controlled according to a clock signal to transfer electrical energy from an input power source to an output power source. A feedback signal is provided in response to an output voltage of the... Agent:

20150124492 - Apparatus and method for high efficiency llc resonant converters: A method comprises providing a resonant converter, wherein the resonant converter comprises an input switch network coupled to a power source, wherein the input switch network comprises a plurality of power switches, a resonant tank coupled to the plurality of power switches, a transformer coupled to the resonant tank and... Agent: Futurewei Technologies, Inc.

20150124493 - Lossless commutation during operation of a power converter: A method for operating a DC-DC converter. The method comprises: matching, based on a turns ratio of a transformer of the DC-DC converter, a primary side capacitance of the DC-DC converter and a secondary side capacitance of the DC-DC converter to result in a matched capacitance; and operating the DC-DC... Agent:

20150124494 - Adaptive synchronous rectifier control: The embodiments herein describe a switched mode power converter. In particular, the embodiments herein disclose techniques for adaptive synchronous rectification control. The switched mode power supply includes a synchronous rectifier controller that determines when to turn off the synchronous rectifier during each switching cycle based on a reference signal corresponding... Agent: Iwatt Inc.

20150124495 - Reducing power consumption of a synchronous rectifier controller: The embodiments herein describe a switched mode power converter. In particular, the embodiments herein disclose techniques for reducing power consumption of a synchronous rectifier controller of the switched mode power converter. The switched mode power converter includes a plurality of circuit components that control operation of a synchronous rectifier included... Agent: Dialog Semiconductor Inc.

20150124496 - Method for charging a dc link of a wind turbine power electronic converter: The present invention relates to a method for charging a DC link of a power converter included in a wind turbine generator, the wind turbine generator comprising a generator side converter connected to an electrical generator and a grid side converter connectable, or connected, to an electrical grid through a... Agent:

20150124497 - Method for operating a converter circuit: A method is disclosed for operating a converter circuit, in which controllable power semiconductor switches of the rectifier unit of a converter circuit are controlled by a rectifier switch signal and the controllable power semiconductor switches of the inverter unit of the converter circuit are controlled by an inverter switch... Agent: Abb Technology Ag

20150124498 - Power conversion device: A power converter includes a first arm configured by connecting a diode to a switching element, a second arm configured by connecting a diode to another switching element, a third arm formed of a first bidirectional switch configured by connecting switch elements, and a fourth arm formed of a second... Agent: Fuji Electric Co., Ltd.

20150124499 - Active damper and power supply including the same: An active damper and a power supply according to exemplary embodiments include: a damper resistor coupled to an input voltage; a damper switch coupled in parallel with the damper resistor; and a capacitor to which a reset current generated by a leading edge of the input voltage flows. The damper... Agent:

20150124500 - Apparatus for controlling surge voltage: Provided is an apparatus for controlling a surge voltage. An embodiment configures a snubber coil and a snubber rectifier on a secondary side circuit in series to control a high spike surge voltage across a rectifier on the secondary side. When the rectifier is turned-off, the snubber rectifier is turned-on... Agent: Lg Innotek Co., Ltd.

20150124501 - Power conversion system: A power converter system suitable to provide a load with electrical power, the system comprising; an input voltage terminal; an output voltage terminal; a first power converter unit; a second power converter unit; an input relay unit; an output relay unit; a control unit; wherein the control unit is configured... Agent: Saab Ab

20150124502 - Driving apparatus for driving switching elements of power conversion circuit: A driving apparatus for driving switching elements of a power conversion circuit. In the apparatus, a first determination unit determines whether or not a dead time that occurs immediately after a setting of discharge rate is changed is greater than the dead time assumed at the time of designing. When... Agent:

20150124503 - Power converter and power conversion method: A power converter according to an embodiment includes a power conversion unit and a controller. The power conversion unit includes a plurality of first bidirectional switches that are disposed between a plurality of DC side terminals and a plurality of AC side terminals, and a second bidirectional switch and a... Agent: Kabushiki Kaisha Yaskawa Denki

20150124506 - Modular converter with multilevel submodules: One aspect of the disclosure includes a submodule topology for a modular multilevel converter. The submodule topology includes two electronic switches connected together with a first series connection terminal connecting the electronic switches in series, the series connected switches being connected in parallel with two capacitors connected together with a... Agent:

20150124504 - Power conversion apparatus: When switching control signals of self-excited semiconductor devices from OFF-control to ON-control, a control circuit controls the self-excited semiconductor device to be ON after a lapse of a turn-ON time from when a control voltage is applied to the self-excited semiconductor device. When switching the control signals of the self-excited... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20150124505 - Three-phase current source rectifier for power supplies: A three-phase current source rectifier (CSR) with three AC inputs may include a controller, a free-wheeling diode with a cathode connected to a positive line and an anode connected to a negative line, three pairs of switches connected in parallel between the positive line and the negative line, and six... Agent:

20150124507 - Circuit arrangement for actuating a semiconductor switching element: A switching arrangement for triggering a semiconductor switching element with a first electrode, a second electrode and a control electrode includes: a pulse generator for generating a control voltage input signal; a bias voltage capacitor; a first electrical resistor electrically connected in series with the bias voltage capacitor between first... Agent:

20150124508 - Low-power power supply: A low-power power supply for an electronic circuit uses an existing current input and converts the current to a higher voltage sufficient for supplying an electronic circuit. The input current generates a defined input voltage, which input voltage is initially generated by voltage drop by the input current passing at... Agent:

20150124509 - Three-phase/two-phase rotary transformer: A three-phase/two-phase rotary transformer including a three-phase portion and a two-phase portion that are movable in rotation relative to each other about an axis A. The three-phase portion includes a first body made of ferromagnetic material and three-phase coils, the two-phase portion including a second body made of ferromagnetic material... Agent: Labinal Power Systems

04/30/2015 > 17 patent applications in 13 patent subcategories.

20150117063 - Control circuit for half-bridge diodes: A circuit includes a first field-effect transistor and a second field-effect transistor. The first field-effect transistor includes a first diode with drain, source, gate and first additional electrodes. The second field-effect transistor includes a second diode with drain, source, gate and second additional electrodes. A first switch selectively connects the... Agent: Stmicroelectronics (tours) Sas

20150117062 - High efficiency pfc power converter: A power factor correction (PFC) power converter is disclosed that converts AC input power to DC output power. A single stage of the PFC power converter performs both the DC-DC power conversion and the power factor correction for the power converter. The disclosed PFC power converters are efficient in energy... Agent:

20150117061 - Power supply apparatus: A power supply apparatus may include: a power supplying unit switching input power and supplying driving power; and a controlling unit controlling supplying of power by the power supplying unit by fixing a power switching phase and duty to a preset value and varying a switching frequency thereof in a... Agent:

20150117064 - Transformer and high voltage power supply apparatus having the same: A transformer including first coil unit and second unit, wherein one or more coils are wound on the bobbin of insulating material in at least one of the first coil unit and the second unit, and wherein the bobbin is formed with at least one partitioning flange for partitioning a... Agent:

20150117065 - Gate driving circuit, and switching apparatus and power supply apparatus having the same: A gate driving circuit may include: a bias unit receiving an input signal having preset high and low signal levels, including a first N-MOSFET turned on in the case in which the input signal has the high level and a first P-MOSFET turned on in the case in which the... Agent: Samsung Electro-mechanics Co., Ltd.

20150117066 - Switched mode converter and methods of controlling switched mode converters: A method is disclosed of controlling a switched mode converter comprising a switch and for providing power to device having a load, comprising: in response to the load exceeding a first threshold, operating in a first mode, being a CCM; in response to the load exceeding a second threshold and... Agent:

20150117067 - Energy conversion systems with power control: In one embodiment, a power conversion system includes a controller to provide power control to a converter, and a distortion mitigation circuit. In another embodiment, a system includes a converter to transfer power between a power source and a load having fluctuating power demand, and a controller to provide power... Agent:

20150117068 - Drive circuit for synchronous rectifier and method thereof: A power converter includes a primary side power circuit, a secondary side power circuit, and a synchronous rectifier drive circuit. The primary side power circuit includes a primary winding and a main switch coupled in series. The main switch is turned on and off in response to control signals. The... Agent:

20150117069 - Power supply apparatus and method of controlling the same: A power supply apparatus and a method of controlling the same. The power supply apparatus includes a DC/AC converting unit; a transformer; a AC/DC converting unit; and a loss compensating unit disposed before an inductor in a secondary side output stage of the transformer and compensating for power loss due... Agent: Samsung Electro-mechanics Co. Ltd.

20150117070 - Ac-dc converting apparatus and operating method thereof: An AC-DC converting apparatus and operating method are provided. The AC-DC converting apparatus includes a transformer, a first energy storage unit, a first output switch, a second energy storage unit, a second output switch and a secondary-side control module. The transformer includes a primary-side winding and a secondary-side winding. The... Agent: Novatek Microelectronics Corp.

20150117071 - Switched mode power supply including a flyback converter with primary side control: A method and apparatus for controlling a flyback converter are presented. The flyback converter includes a transformer, a semiconductor switch coupled to a primary winding of the transformer, a current measurement circuit coupled to the semiconductor switch, a diode coupled in series to a secondary winding of the transformer, and... Agent:

20150117072 - Soft-start switching power converter: A soft-start switching power converter includes a voltage converting circuit and a soft-start circuit. The voltage converting circuit includes a transformer, and a first switch which includes a first terminal connected to the transformer, a second terminal providing a trigger signal, and a control terminal receiving a control signal, and... Agent:

20150117073 - Stable regenerative bi-directional cell for bridge power inverters: A high efficiency, multi-mode, regenerative AC-DC-AC inverter power system contains an inverter bridge, a bi-phase matrix (BP-Mtx) containing reverse current oriented, series-connected sets of controllable switches, wherein inputs to a first and second set of controllable switches are coupled to the inputs of the first inverter bridge, and outputs of... Agent: Rhombus Energy Solutions, Inc.

20150117074 - Auto-tuning current loop compensation for power factor correction controller: An apparatus comprises a power converter circuit and a controller. The power converter circuit includes an inductor, a switching circuit, and a digital control loop circuit having an adjustable transfer function, wherein the transfer function includes a zero variable and a signal gain variable. The controller includes a tuning module... Agent: Analog Devices, Inc.

20150117075 - Power supply apparatus and image forming apparatus: The discharge circuit includes plural resistors connected in parallel to a capacitor and connected between input lines. When input of an alternative voltage has stopped, the plural resistors form plural discharge paths to remove charges accumulated in the capacitor, thereby removing the charges in the capacitor connected between the input... Agent: Canon Kabushiki Kaisha

20150117076 - Synchronous rectification circuit adapted to electronic transformer and switching power supply thereof: The present disclosure relates to a synchronous rectification circuit adapted to an electronic transformer. Operation states of four transistor switches in the synchronous rectification circuit are adjusted in accordance with a detected input voltage signal of the synchronous rectification circuit to achieve synchronous rectification. Moreover, the transistor switches in a... Agent:

20150117077 - Ac / dc power bank distribution management system: An AC/DC power bank distribution management system is provided, which includes a power supply unit, a power distribution board and a power distribution unit. The power source includes the alternating current (AC) or direct current (DC) that is converted into a low-voltage DC by a high efficiency power supply unit.... Agent:

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