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.
08/07/2014 > 21 patent applications in 14 patent subcategories.

20140218973 - Dc/dc converters: A controller for a DC/DC converter controls a first, second, third, and fourth switches according to pulse signals generated alternately. The controller turns off the third switch on detection of a first edge of a first pulse signal, turns on the first switch after a delay from the detection of... Agent: O2micro Inc.

20140218975 - Power conversion system with adjustable frequency: A power conversion system with adjustable frequency includes an electric transformer, a pulse width modulation driving controller, a switching transistor, a first and second voltage division resistors connected in series, an output diode and an output capacitor. The electric transformer receives the input power and generates the sensing current and... Agent: Inno-tech Co., Ltd.

20140218976 - Systems and methods for regulating power conversion systems with output detection and synchronized rectifying mechanisms: System and method for regulating a power conversion system. An example system controller includes: a first controller terminal and a second controller terminal. The system controller is configured to: receive an input signal at the first controller terminal and generate a first drive signal at the second controller terminal based... Agent: On-bright Electronics (shanghai) Co., Ltd.

20140218974 - Usb power adapter for ac and dc power: A USB power adapter for AC and DC power has a circuit board, a base and a top cover. The base and the top cover receive the circuit board therein. The circuit board has an AC conversion module, a DC conversion module, and a USB connection port. The base has... Agent: Quietek Corporation

20140218977 - Switching power supply circuit: A switching power supply circuit includes a switching element that switches power fed to a primary winding of a transformer and thus induces a voltage in the secondary winding, and an oscillation circuit that oscillates to generate a pulse signal to control switching action. The oscillation circuit repeatedly performs intermittent... Agent: Funai Electric Co., Ltd.

20140218978 - Converter with galvanic isolation: A converter is suggested comprising a transformer providing a galvanic isolation between a primary side and a secondary side of the converter; at least one switching element; a converter control unit comprising a first pin for controlling the at least one switching element and a second pin for detecting a... Agent: Infineon Technologies Austria Ag

20140218979 - Power conversion device: A power conversion device has a power module that switches the ON/OFF state of a switching element and converts and outputs input power, a metal housing that houses the power module, and a conductive member connected to the housing. The conductive member is connected to the housing at a position... Agent: Nissan Motor Co., Ltd.

20140218980 - Electrical generator: An inverter circuit comprises an inverter which can be configurable for controlling the supply of mains current from a grid to an electric machine in a start-up mode whereby the machine drives the prime mover for initialisation. Thereafter the same inverter is reconfigurable as part of the circuit to supply... Agent: Control Techniques Limited

20140218981 - Power supply system: A power supply system includes: a switching power supply; a control device; an auxiliary power supply circuit, which is connected in parallel with the switching power supply with respect to an AC power supply, which includes an electricity storage unit for storing electricity by charging current fed from the alternating... Agent: Brother Kogyo Kabushiki Kaisha

20140218982 - T-connected autotransformer-based 40-pulse ac-dc converter for power quality improvement: Design of a T-connected autotransformer based 20-pulse ac-dc converter is presented in this invention. The 20-pulse topology is obtained via two paralleled ten-pulse ac-dc converters each of them consisting of a five-phase (five-leg) diode bridge rectifier. For independent operation of paralleled diode-bridge rectifiers, a zero sequence blocking transformer (ZSBT) is... Agent: Electrical Eng. Department, Shahab-e- Danesh Institute Of Higher Education

20140218983 - Additional electric power receiving method and device replacing conventional grounding with negative voltage source: An additional electric power receiving method replacing conventional grounding with a negative voltage source includes the step of transmitting electromagnetic wave or current from a power supply source to a rectifier, wherein a grounding end of the rectifier is in electrical communication with the negative voltage source, and the negative... Agent: Arbl Co., Ltd.

20140218984 - Inverter control module with harmonic suppression capability: An inverter control module electrically connected to an inverter module is disclosed to include an error detection unit for receiving a control signal and a feedback signal from an external source and processing these signals and then outputting a corresponding error signal, a signal amplifier module electrically coupled to the... Agent: Shun-fu Technology Corp.

20140218985 - Control of energy storage system inverter system in a microgrid application: A system that manages a supplemental energy source connected to a power grid uses a two stage control strategy to manage power transfers in and out of the power grid as well as in and out of an energy storage system, such as a battery bank. One stage uses a... Agent: Caterpillar Inc.

20140218986 - Multilevel converter and a method for controlling multilevel converter including balancing cell voltages: A multilevel converter for controlling a multilevel converter is provided. The multilevel converter is a single phase converter with one phase leg, or a three phase converter with three phase legs, the phase legs of the three phase converter are interconnected in a star-configuration. The single phase converter with one... Agent:

20140218990 - Power factor correction device and correcting method thereof: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current... Agent: Alpha And Omega Semiconductor Incorporated

20140218987 - Power supply with low electro-magnetic interference and inductor for power supply with low electro-magnetic interference: A power supply circuit includes an input configured to receive an input voltage, an output configured to supply an output voltage, at least one inductor, at least one diode, and at least one switch. The inductor may have a parasitic capacitance less than about 100 pF. Related inductors are also... Agent: Cree, Inc.

20140218989 - Rectifier circuit with ac side short-circuiting function and synchronized switch harvesting on inductor converter: Rectifier circuit including a pair of input terminals, a pair of output terminals, and a first circuit interconnecting the pair of input terminals. The first circuit includes an energy storing element and a rectifier bridge, wherein the rectifier bridge includes at least one controllable switching element per bridge branch. An... Agent: Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

20140218988 - Step down switching regulator: A current limiting comparator generates a current limiting signal SLIM which is asserted when a detection voltage Vs at a detection terminal CS is higher than a predetermined threshold voltage VTH. A mask signal generating unit generates a mask signal SMSK which is asserted after a predetermined delay time TMSK... Agent: Rohm Co., Ltd.

20140218992 - Compound semiconductor device and method for manufacturing the same: An AlGaN/GaN-HEMT has a structure including: compound semiconductor layers formed on a substrate; a gate electrode, a gate pad that has a current path formed between the gate electrode and itself, and a semiconductor layer that is spontaneously polarized and piezoelectrically polarized, which are formed on the compound semiconductor layer;... Agent: Fujitsu Limited

20140218993 - High power converter with low power transistors connected in parallel: A system for converting a first electric voltage into a second electric voltage, comprising: at least two input terminals and two output terminals; and switching members disposed between the terminals, which can convert the first voltage into the second voltage. At least one switching member comprises at least two arms... Agent: Ge Energy Power Conversion Technology Limited

20140218991 - Semiconductor system: In some aspects of the invention, multiple insulating substrates each mounting thereon at least one each of at least four semiconductor devices that form at least one of three-level electric power inverter circuits and a base plate on the one surface of which a plurality of the insulating plates are... Agent: Fuji Electric Co., Ltd.

07/31/2014 > 21 patent applications in 14 patent subcategories.
07/24/2014 > 31 patent applications in 21 patent subcategories.

20140204613 - Providing control power with a photovoltaic system: For controlling a photovoltaic system connected to an AC power grid and including a photovoltaic generator and an inverter, electric power which includes positive and negative dynamic control power is transferred by means of the inverter between the photovoltaic generator and the AC power grid as a function of a... Agent:

20140204614 - Rectified high frequency power supply with low total harmonic distortion (thd): A method and apparatus that performs AC to DC power conversions without creating significant 50 or 60 Hz harmonic currents and voltage distortions on the AC power source conductors thus minimizing the need for ancillary harmonic filtering of 50 or 60 Hz harmonics. The method and apparatus is embodied in... Agent:

20140204616 - Galvanically isolated dc/dc converter and method of controlling a galvanically isolated dc/dc converter: A galvanically isolated DC/DC converter includes at least one first side converter circuit coupled between a pair of first side DC terminals, and at least one second side converter circuit coupled between a pair of second side DC terminals. The second side converter circuit has at least a first and... Agent: L-3 Communications Magnet-motor Gmbh

20140204617 - Power converter with current feedback loop: In a power converter, a deviation calculator calculates, in each cycle, a deviation between a value of an input electrical parameter of a switch circuit and a target value selected by a selector in a previous cycle. The input electrical parameter depends on the input power to the switch circuit.... Agent: Denso Corporation

20140204618 - Transformer sub-circuit: A transformer sub-circuit for use in an electrically operated vehicle includes a bridge circuit which has at least four MOSFETs and capacitors connected in parallel with the MOSFETs, and an inductor connected to the bridge circuit for use as a primary side of a transformer. A control device or controller... Agent: Siemens Aktiengesellschaft

20140204615 - Voltage converter with low starting voltage: The present invention relates to a voltage converter circuit for transforming a low voltage applied to its input into a higher output voltage at an output. The voltage converter circuit comprises at least one first to fourth controllable switch of a first type, which are connected to each other in... Agent: Albert-ludwigs-universitat Freiburg

20140204621 - Apparatus for regulating an energy system and method for operating an energy system: The present invention provides compensation of rapid fluctuations in voltage in a DC-to-DC converter. For this, the primary side of the DC-to-DC converter is monitored by means of capacitive voltage dividers. A voltage fluctuation occurring in the process can be identified early and thereupon the DC-to-DC converter can be controlled... Agent:

20140204620 - Converter: A converter for transferring energy from a voltage supply to an output includes transformer T1, coupled inductor L1, switch S1, energy recovery capacitor C, and energy recovery winding T1b. Secondary winding T1c transfers energy from the supply to the output when primary winding T1a is connected to the voltage supply.... Agent: Tdk-lambda Uk Limited

20140204619 - Energy conversion architecture with secondary side control delivered across transformer element: A switched mode power converter is configured having predominate secondary side control. A primary side driving circuit is configured as a responsive state machine the output of which is input as the driving signal for a main switch. An output voltage, current or power is sensed and the secondary side... Agent: Flextronics Ap, LLC

20140204622 - Reconstruction pulse shape integrity in feedback control environment: A switched mode power converter includes a closed loop feedback control mechanism for regulating an output characteristic and a resonant type circuit for inclusion of resonant energy delivery. The characteristic impedance of the resonant type circuit is modified from an optimal energy transfer configuration to one that dampens fluctuations in... Agent: Flextronics Ap, LLC

20140204623 - Charging circuit for a power converter controller: A controller includes a first controller terminal, a second controller terminal, a first p-channel metal-oxide-semiconductor field-effect transistor, and a second pMOS transistor. The first controller terminal is to be coupled to a bypass capacitor coupled to a secondary side of an isolated power converter. The second controller terminal to be... Agent: Power Integrations, Inc.

20140204624 - Power converter controller with multiple power sources: A controller includes a bypass terminal, a first power circuit, a second power circuit, and a charging control circuit. The bypass terminal is to be coupled to a bypass capacitor coupled to a secondary side of an isolated power converter. The first power circuit is coupled to the bypass terminal... Agent:

20140204625 - Secondary controller for use in synchronous flyback converter: A secondary controller for use in a synchronous flyback converter includes a comparator, a drive circuit, and logic circuitry. The comparator is coupled to generate a compare signal in response to a comparison of a threshold to an input signal representative of a secondary winding voltage of the synchronous flyback... Agent: Power Integrations, Inc.

20140204626 - Receive circuit for use in a power converter: A receive circuit for use in a power converter controller includes a first amplifier coupled to receive an input pulse. A second amplifier is coupled to a first output of the first amplifier. The first output is coupled to be responsive to the input pulse and to a second output... Agent: Power Integrations, Inc.

20140204628 - Multi-stage sampling circuit for a power converter controller: An example controller for a power converter includes a track and hold circuit, a sample and hold circuit, and drive logic. The track and hold circuit receives a signal that is representative of an output voltage of the power converter. The track and hold circuit includes a first capacitor that... Agent: Power Integrations, Inc.

20140204627 - Systems and methods for driving a bipolar junction transistor by adjusting base current with time: System and method for driving a bipolar junction transistor for a power converter. The system includes a current generator configured to output a drive current signal to a bipolar junction transistor to adjust a primary current flowing through a primary winding of a power converter. The current generator is further... Agent: On-bright Electronics (shanghai) Co., Ltd.

20140204629 - Acpower pupply power circuit: An AC power supply power circuit comprises a power input unit connected to a DC/AC converter. The AC/DC converter is connected to a DC/DC circuit, and the DC/DC circuit is further connected to an adjustable DC voltage regulation circuit. The adjustable DC voltage regulation circuit is connected to an amplifier... Agent: Chyng Hong Electronic Co.

20140204632 - Bypassed cascaded cell converter: In a converter for converting energy from a generator to a power network, wherein the converter comprises multiple power modules, wherein each power module includes at least two power cells and a transformer for connecting the power cells to the power network, wherein each power cell includes a phase input,... Agent: Det International Holding Limited

20140204630 - Current balance control for non-interleaved parallel bridge circuits in power converter: Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a power generation system, such as a wind driven doubly fed induction generator (DFIG) system, are provided. The power converter can include a plurality of bridge circuits coupled in parallel to increase the... Agent: General Electric Company

20140204631 - Power converter with low standby power consumption: A power converter for converting an AC input of between frequency F1 at voltage V1 and frequency F2 at voltage V2 into a stable AC output of frequency F3 and voltage V3 comprises an AC/DC/AC/AC/DC converter (100) that converts the AC input power (between F1, V1 to F2, V2) into... Agent:

20140204633 - Distributed power generation interface: Described herein are methods, systems, and apparatus for a controller for a power circuit that interfaces distributed power generation with a power distribution grid, comprising: a first portion, including a maximum power point tracker, that receives signals corresponding to the distributed power generation voltage and current, and outputs to the... Agent: Sparq Systems Inc.

20140204634 - Power supply apparatus: A power supply apparatus capable of setting a ripple current to be not more than an acceptable value regardless of an input voltage is obtained. The apparatus calculates switching frequency by a current detected by a current detector so that the switching frequency is set to be low if the... Agent: Mitsubishi Electric Corporation

20140204635 - Ac-dc converter: An AC-DC converter includes two series circuits, an inductor, and a common snubber circuit. Each series circuit includes a switch and a current block device. The block device blocks a current from its high potential side to its low potential side when the first device is closed and allows the... Agent: Denso Corporation

20140204636 - Current limiting control method for diode neutral-point-clamped three-level inverter and related circuit: The present disclosure discloses a current limiting control method for a diode neutral-point-clamped three-level inverter and a related circuit. When a current in switching tubes is lowered to a value not greater than a first preset current value, the current limiting control method for a diode neutral-point-clamped three-level inverter and... Agent: Huawei Technologies Co., Ltd.

20140204637 - Standby power reduction device: A standby power reduction device is provided, including a capacitor connected in parallel to a main switch controlling a switching mode power supply, without the necessity of providing a starting circuit, thereby reducing the cost and enabling miniaturization of product.... Agent: Korchip Corporation

20140204638 - Power supply apparatus with low power in standby mode: Provided is a power supply apparatus with low power in a standby mode. The apparatus includes a voltage multiplier configured to multiply an input voltage and including a first terminal through which the multiplied voltage is output and a second terminal through which a voltage lower than a voltage of... Agent: Samsung Electronics Co., Ltd.

20140204640 - Method and apparatus for changing a frequency of a switch prior to a level of current received from an inductor decreasing to a predetermined level: A controller including a switch, a first module, a second module, and a control module. The switch receives current from an inductor and bypasses a portion of the current from being received by a load. The switch is cycled between a first state and a second state at a frequency.... Agent:

20140204639 - Power supply apparatus: A power supply apparatus mainly includes a secondary side controller, a digital isolator, a plurality of isolation sensing units, and a driving unit. The secondary side controller is configured to isolatedly measure voltages and currents, and is configured to isolatedly control the driving unit. The power supply apparatus includes a... Agent: Chicony Power Technology Co., Ltd.

20140204641 - System for regulating the output of a high-voltage, high-power, dc supply: A system for regulating the output of a high-voltage, high-power DC supply, the system includes a high-voltage DC power supply, a storage capacitor, and at least one non-dissipative regulator having an output voltage range less than an output voltage range of the high-voltage DC power supply. The regulator includes an... Agent: Diversified Technologies, Inc.

20140204642 - Inverter circuit: An inverter circuit 40 with reduced loss in semiconductor elements when starting up, having switching elements Q1 and Q2 in series, and connected to both ends of a direct current power source circuit 30 having direct current power sources Psp and Psn in series, and including an alternating current output... Agent: Fuji Electric Co., Ltd.

20140204643 - Control scheme for current balancing between parallel bridge circuits: A control scheme for reducing current imbalance between parallel bridge circuits in a power converter system is provided. The power converter can include a plurality of bridge circuits coupled in parallel to increase the output power capability of the power system. The parallel bridge circuits can be controlled pursuant to... Agent: General Electric Company

07/17/2014 > 18 patent applications in 14 patent subcategories.

20140198533 - Bidirectional power conversion with fault-handling capability: A power conversion system includes a unipolar bidirectional power converter with DC terminals and a first controller, and a bipolar bidirectional power converter with DC terminals connected in series with the DC terminals of the unipolar bidirectional power converter and a second controller. The first controller is operable to cause... Agent: Abb Research Ltd.

20140198534 - Converter: The present invention relates to a converter for transferring power between a first DC system of DC voltage V1 and a second DC system of DC voltage V2, the converter comprising: —a first AC/DC converter for transforming DC voltage V1 into a first single phase AC voltage V1ac, of frequency... Agent: University Court Of The University Of Aberdeen

20140198535 - Method and apparatus for controlling programmable power converter with low standby power loss: Method and apparatus for controlling a programmable power converter are provided. The method and apparatus generate a first power source and a second power source. The voltage level of the second power source is lower than the voltage level of the first power source. The first power source and the... Agent: System General Corp.

20140198537 - Power conversion apparatus: A power conversion apparatus includes a switch circuit which activates switching elements on the basis of a control signal, a feedback means which performs feedback control, a signal output means which outputs the control signal on the basis of a control variable of the feedback control, and a mode switching... Agent: Denso Corporation

20140198536 - Resonant converters and methods: A multilevel LLC resonant converter comprises a resonant tank connected in series with a primary side of a transformer, a first switch and a second switch connected in series, wherein a common node of the first switch and the second switch is coupled to a mid-voltage point through a first... Agent: Futurewei Technologies, Inc.

20140198538 - Power converter with current feedback loop: In a power converter, a driver drives a switching element using a manipulated variable therefor to convert input power into output power. A first measuring unit measures a value of a first electric parameter depending on the input power. A first determiner determines, from the measured value of the first... Agent: Denso Corporation

20140198540 - Integrated switch mode power supply controller and switch mode power supply using the same: In one embodiment, an integrated switch mode power supply controller can include: a multiplexing pin that receives a detection voltage signal; a switch mode power supply that receives a DC input voltage, and operates in a switching cycle having first, second, and third time intervals; during the first time interval,... Agent: Silergy Semiconductor Technology (hangzhou) Ltd

20140198539 - Systems and methods for zero voltage switching in power conversion systems: System and method for regulating a power converter. A system for regulating a power converter includes a controller, a first switch, and a second switch. The controller is configured to generate a first switching signal and a second switching signal. The first switch is configured to receive the first switching... Agent: On-bright Electronics (shanghai) Co., Ltd.

20140198541 - Power supply and image forming apparatus: The power supply includes a transformer, a first switching element for performing a switching operation of turning on and off a voltage input to a primary side of the transformer, a second switching element to be connected to a secondary side of the transformer so as to be turned on... Agent: Canon Kabushiki Kaisha

20140198542 - Single-phase active front end rectifier system for use with three-phase variable frequency drives: A voltage source inverter comprises a rectifier having an input for receiving single-phase AC power from an AC source and converting the AC power to DC power on a DC bus. The DC bus has first and second rails to provide a relatively fixed DC voltage. A DC bus capacitor... Agent: Yaskawa America, Inc.

20140198543 - Power supply with dc breaker switch and reduced regulated dc link voltage: DC link voltage to the output stage circuit, the level of the DC link voltage based on switching states of the breaker switch. The breaker circuit may further include a control circuit configured to generate a gate control signal to control the switching states of the breaker switch, the gate... Agent: Fairchild Semiconductor Corporation

20140198544 - Contactless power supply device: In order to obtain a contactless power supply device which, even when a spatial gap between a primary winding and a secondary winding varies, is capable of not only accurately detecting whether or not the primary winding and the secondary winding come into the position opposite to each other, but... Agent: Mitsubishi Electric Corporation

20140198545 - Power-conversion engine: The disclosure provides a power converter and method for controlling same, comprising a plurality of switch elements, an inductive reactor, and at least two ports for the movement of electrical energy. Any energy-moving port may be made unipolar, bidirectional, bipolar, or bidirectionally bipolar. Ports may be equipped with sensing circuitry... Agent: Cognipower, LLC

20140198546 - Master-slave interleaved bcm pfc controller and control method thereof: The present invention relates to a master-slave interleaved BCM PFC controller for controlling a PFC circuit with master and slave channels. In one embodiment, the PFC controller can include: a master channel controller that generates a master channel control signal and an inverted master channel control signal; a first phase... Agent: Silergy Semiconductor Technology (hangzhou) Ltd

20140198547 - Multilevel inverter: There is provided a multilevel inverter capable of easily perform balancing of voltages by way of controlling switching of voltage dividing based on an offset between voltages divided by capacitors of a voltage dividing circuit. The multilevel inverter includes: a voltage dividing unit including a plurality of capacitors for dividing... Agent: Samsung Electro-mechanics Co., Ltd.

20140198548 - System and method for power conversion: A converter includes a first converter module and a second converter module coupled to the first converter module in a nested manner. Each of the first converter module and the second converter module includes a plurality of switch units. When the converter is operated to perform power conversion, at least... Agent:

20140198549 - Energy dissipating device for dc power supplies: An energy dissipating device configured to connect to a power supply and to dissipate excess energy from a direct current (DC) rail in response to a change in power supply settings or operating characteristics. The energy dissipating device is connected to the DC rail, which conducts current generated by an... Agent: Agilent Technologies, Inc.

20140198550 - Frequency multiplier: An apparatus is provided. A differential pair of transistors is configured to receive a first differential signal having a first frequency, and a transformer, having a primary side and a secondary side is provided. The primary side of the transformer is coupled to the differential pair of transistors, and the... Agent: Texas Instruments Incorporated

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