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Electric power conversion systems October categorized by USPTO classification 10/12

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.
  
10/25/2012 > 8 patent applications in 8 patent subcategories. categorized by USPTO classification

20120268969 - Dc-ac inverter with high frequency isolation transformer: The novel DC-AC inverter topology with high frequency isolation transformer consists of an input DC-DC converter with high frequency isolation transformer and an output full-bridge unfolding converter with four transistors provides the output AC voltage from a DC source. The input DC-DC converter has two primary side controllable switches and... Agent: Cuks, LLC

20120268970 - Electric generating system using solar cell: An electric generating system using a solar cell improves the quality of output power by including a converter for converting an output voltage generated from the solar cell into a DC voltage in a pulse shape. An inverter converts the DC voltage in the pulse shape into an AC voltage... Agent:

20120268971 - Power supply for controlling current: The present invention relates to a power supply for controlling current that uses a flyback converter for electrical insulation between a load line unit and the power supply for controlling current. In a transformer (a flyback converter) having a flyback structure in the present invention, disclosed is a device which... Agent:

20120268972 - 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

20120268973 - Power regulating apparatus: Disclosed is a power regulating apparatus, which is connected between an AC power and a load, for supplying the regulated AC power to the load. The power regulating apparatus includes a first regulating means provided to regulate the input AC power source when the AC power is at a normal... Agent:

20120268974 - High-resolution and low-resolution sensors for phase detection: A phase detection system includes a low-resolution sensor and a high-resolution sensor for monitoring an alternating current (AC) voltage. A phase detector receives voltage samples from both the low-resolution sensor and the high-resolution sensor. The phase detector monitors the low-resolution sensor to detect approaching zero cross events (i.e., monitored voltage... Agent: Hamilton Sundstrand Corporation

20120268975 - Power conversion with current sensing coupled through saturating element: An architecture for current-modulating power-handling circuits, such as power converters, where a small saturating inductance is used to obtain a pulse edge when the main current value crosses zero.... Agent: Ideal Power Converters Inc.

20120268976 - Three-phase rectifier circuit: In one aspect of the invention, a three-phase rectifier circuit having three input terminals and two output terminals includes a three-phase diode bridge, three switching circuits, and a voltage source. The three-phase diode bridge has three pairs of first diodes electrically parallel-connected to the two output terminals. Each pair of... Agent: Delta Electronics (shanghai) Co., Ltd.

  
10/18/2012 > 23 patent applications in 14 patent subcategories. categorized by USPTO classification

20120262947 - Integrated control circuit of setting brown-in voltage and compensating output power and method for operating the same: An integrated control circuit of setting brown-in voltage and compensating output power and a method for operating the same are disclosed. The integrated control circuit is applied to a power supply. The integrated control circuit includes a control unit and a voltage regulation unit. The control unit has a control... Agent: Neoenergy Microelectronics, Inc.

20120262952 - Groundable dc/dc coverter: A DC/DC converter includes two input terminals for a DC input voltage, two output terminals for a DC output voltage, an inverter converting a DC voltage into an AC voltage, and a rectifier converting an AC voltage from the inverter into a DC voltage between a first one of the... Agent: Sma Solar Technology Ag

20120262948 - Photovoltaic module: A photovoltaic module includes: a solar cell module including a plurality of solar cells; and a junction box including a capacitor unit attached to one face of the solar cell module and that to stores DC power supplied from the solar cell module, and a dc/dc converter unit to convert... Agent:

20120262949 - Photovoltaic module and control method thereof: A photovoltaic module includes: a solar cell module including a plurality of solar cells; a junction box including a capacitor unit to store DC power supplied from the solar cell module, a dc/dc converter unit to level-convert the stored DC power and output the same; and a controller to control... Agent:

20120262951 - Power converter having semiconductor switching element: Provided is a configuration in which it is possible to mount an applied voltage suppression circuit configured to prevent voltage breakdown of a semiconductor switching element, and a set voltage thereof can be inspected without damaging an IC or the like of a peripheral circuit. In a power converter having... Agent: Panasonic Corporation

20120262950 - Power supply adaptor: A power supply adapter receives an AC voltage, converts the AC voltage into a DC voltage, and supplies the DC voltage to an electronic device. A DC/DC converter converts the voltage smoothed by a smoothing capacitor into the DC voltage. A device-side connector is connected to the DC/DC converter via... Agent: Rohm Co., Ltd.

20120262953 - Multi-phase resonant converter: A resonant power converter draws current from a source that provides a supply current. Multiple quasi-resonant converters are interleaved and each quasi-resonant converter receives the supply current and forms a phase-shifted current according to drive signals supplied by a controller. Each phase-shifted current includes a dead-time delay and is phase-shifted... Agent: Flextronics Ap, LLC

20120262955 - Converter with input voltage balance circuit: In one aspect of the present invention, a converter circuit with input voltage balance includes a plurality of modules having inputs electrically series-connected to each other and outputs electrically parallel-connected to each other and a plurality of switching circuits with each electrically connected to an input connection node of a... Agent: Delta Electronics (shanghai) Co., Ltd.

20120262954 - Off line resonant converter with merged line rectification and power factor correction: An off line resonant converter with improved power factor and merged line rectification is disclosed. An example off line resonant converter includes a boost storage inductance circuit to be coupled to receive an ac input line voltage. A switcher circuit is coupled to the boost storage inductance circuit. The switcher... Agent: Power Integrations, Inc.

20120262956 - Power supply wth digital feedback signaling: Apparatus and methods are provided for use with power supplies. A controller regulates power supply output by way of feedback signaling. Current pulses generated by an electrical load are detected in the feedback signaling and are processed to derive a sequence of digital bits. The digital, bits are subjected to... Agent:

20120262957 - Distributed power supply system: A distributed power supply system in which no simultaneous disconnection from the system occurs when a system voltage momentarily drops is provided. It includes an inverter circuit that converts a direct current power generated by a direct current power supply and that supplies the alternating current power to an alternating... Agent: Fuji Electric Co., Ltd.

20120262958 - Power factor correction circuit: A power factor correction circuit is provided which may include a first switched-mode converter circuit comprising a first inductor, at least one second switched-mode converter circuit having a second inductor, a control circuit coupled to the first and second switched-mode converter circuits, wherein the control circuit is configured to start... Agent: Infineon Technologies Ag

20120262959 - Power supply with integrated linear high voltage multiplier and capacitors therefor: A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source which provides an AC voltage to a voltage multiplier circuit that converts the AC voltage to a high DC voltage. A parallel or combination parallel-series multiplication circuit... Agent:

20120262960 - Solar generation method and system: The invention describes a solar generation method by means of a system (1) comprising a set of solar cells (2) connected to an inverter (4) that transmits the energy generated to an electrical network (6), which comprises controlling the active and reactive power that the system (1) transmits to the... Agent: Acciona Energia, S.a.

20120262961 - Low cost high power factor led driver: A controller for a power supply having a primary side and a secondary side includes a mapping circuit for generating a feedback signal corresponding to an output current of the secondary side, a power switch coupled to the primary side for conducting a connection according to a modulation signal, a... Agent: Noveltek Semiconductor Corp.

20120262962 - Active rectifier for vehicles: A vehicle power system including an unregulated alternator; a saturable reactor receiving an output AC voltage from the alternator and generating a reduced AC voltage in response to a bias signal; and an active rectifier rectifying the reduced AC voltage to a DC voltage.... Agent: Itt Manufacturing Enterprises, Inc.

20120262964 - Alternate current rectifier circuit and power circuit: An alternate current rectifier circuit which includes a first diode, a second diode, a first transistor, a second transistor, a third transistor, and a fourth transistor is power saving. The first diode is connected to the first transistor and the fourth transistor; the second diode is connected to the second... Agent: Hon Hai Precision Industry Co., Ltd.

20120262963 - Multi-phase rectifier of alternator: The present invention provides a multi-phase rectifier of an alternator having a plurality of phases, and each of the phases include at least a positive rectifying device and at least a negative rectifying device. The negative rectifying device includes a schottky diode and a diode with reverse breakdown effect in... Agent: Mobiletron Electronics Co., Ltd

20120262965 - Single-wall carbon nanotube diodes: Methods and devices relating to diodes including single-wall carbon nanotubes (SWCNT) are disclosed according to embodiments of the present invention. According to one embodiment, a diode may include one or more SWCNTs. The SWCNTs may be grouped together in multiple bundles with the SWCNTs being generally aligned parallel to each... Agent: U.s. Government As Represented By The Secretary Of The Army

20120262966 - Ac/dc converter circuit: The invention relates to an AC/DC converter circuit (100) and a method for converting N≧2 AC supply voltages (U1, U2, U3) into DC voltage. This is achieved by feeding the AC supply voltages to first terminals (a1, a2, a3) of full bridge converters (11, 12, 13), wherein the second terminals... Agent: Koninklijke Philips Electronics N.v.

20120262967 - Single-stage inverter with high frequency isolation transformer: The novel single-stage power processing DC-AC inverter topology with high frequency isolation transformer eliminates the four-transistor unfolding full-bridge stage and provides the output AC voltage at high power conversion efficiency. The new inverter topology has only three switches, two resonant capacitors, a resonant inductor, an output inductor and a small... Agent: Cuks, LLC

20120262968 - Power converting apparatus: A power converting apparatus includes a housing, a cable, and a grommet supporting member. The housing includes a housing base, a main body, and an air duct. The housing base has a first surface and a second surface and includes a through hole. The main body includes a plurality of... Agent: Kabushiki Kaisha Yaskawa Denki

20120262969 - Power converting apparatus and reactor: A power converting apparatus includes a housing, a self-standing cable, and a grommet securing member. The housing includes a housing base, a main body, and an air duct. The housing base includes a through hole. The main body includes a plurality of electronic components on a first surface of the... Agent: Kabushiki Kaisha Yaskawa Denki

  
10/11/2012 > 14 patent applications in 14 patent subcategories. categorized by USPTO classification

20120257419 - Coil bobbin, coil component and switching power source apparatus: To improve insulating properties of a coil winding having three turns. In a coil bobbin, insulation between mutually adjacent winding members of a first coil winding are achieved by a projecting section. Furthermore, the first coil winding and the second coil winding are insulated from each other by the flange... Agent: Tdk Corporation

20120257420 - Coil bobbin, coil component and switching power source apparatus: In a coil bobbin, a cover section is provided as a spacer section which abuts against a heat radiating section that functions as a heat radiating terminal of the first coil winding, from a direction following the axis line of the tubular section. Here, when performing heat radiation from the... Agent: Tdk Corporation

20120257421 - Integrated magnetics with isolated drive circuit: A switch-mode power converter includes a power isolation transformer and a drive transformer having their various windings collectively wound on a magnetic core having a center leg and outer legs. A primary winding and one or more secondary windings of the power transformer are wound on the center leg, and... Agent:

20120257422 - Dc/dc converter and electric generating system using solar cell having the same: Disclosed herein is an electric generating system using a solar cell, including: a DC/DC converter that converts output voltage generated from a solar cell into DC voltage and has a converter switching device; a snubber device that has a snubber switch clamping voltage applied to the converter switching device; and... Agent:

20120257423 - Systems and methods for adaptive switching frequency control in switching-mode power conversion systems: Switching-mode power conversion system and method thereof. The system includes a primary winding configured to receive an input voltage and a secondary winding coupled to the primary winding. Additionally, the system includes a compensation component configured to receive the input voltage and generate at least a clock signal based on... Agent: On-bright Electronics (shanghai) Co., Ltd.

20120257424 - Limiting peak electrical power drawn by mining excavators: The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power... Agent:

20120257425 - Power converter: A power supplying section is an operation power supply for a switching element for an inverter, and one end on a low potential side is connected to one end of the switching element on a DC power supply line side. A boot capacitor is connected to one end of the... Agent:

20120257426 - Ac adapter with automatic built-in power switch: The AC adapter with automatic built-in power switch comprises of an AC power supply circuit, an AC control circuit, and a monitoring circuit. The monitoring circuit further comprises of a standby power supply, a microcontroller, a circuit for device detection, and a current monitor circuit. The AC power supply circuit... Agent: Ever Win International Corporation

20120257427 - Active rectification output capacitors balancing algorithm: An active rectification system includes an active rectifier that converts an alternating current (AC) input to a direct current (DC) output. The active rectifier includes a plurality of switching devices and at least a first output capacitor and a second output capacitor connected at the DC output of the active... Agent: Hamilton Sundstrand Corporation

20120257428 - Power supply circuit device: A power supply circuit device comprises a relay, a main rectifier circuit, a standby rectifier circuit, a standby power supply circuit and a main power supply circuit. The main rectifier circuit rectifies an AC voltage from an external power supply, and inputs the rectified voltage to the main power supply... Agent: Funai Electric Co., Ltd.

20120257429 - Two-stage single phase bi-directional pwm power converter with dc link capacitor reduction: DC link capacitance in a bi-directional AC/DC power converter using a full-bridge or H-bridge switching circuit can be greatly reduced and the power density of the power converter correspondingly increased by inclusion of a bi-directional synchronous rectifier (SR) DC/DC converter as a second stage of the power converter and controlling... Agent:

20120257430 - Bootstrap gate drive for full bridge neutral point clamped inverter: In a neutral-point-clamped power inverter, gate drive circuit comprises four drive blocks providing bipolar DC signals to control switch gates. The first and third drive blocks are bootstrapped to the second and fourth. Inverter's neutral bus is commonly connected to the positive and negative DC buses through clamping capacitors. An... Agent: Abb Inc.

20120257431 - Power supply apparatus: A power supply apparatus includes an inverter having output terminals; a first transformer that transforms alternating-current output from the output terminals; a second transformer that is connected to the output terminals in parallel to the first transformer, arranged on an opposite side of the first transformer with respect to a... Agent: Mitsubishi Electric Corporation

20120257432 - Usb ac adapter with removable usb vehicle power adapter: The USB AC adapter with removable USB vehicle power adapter comprises of a housing with a slot that holds a removable vehicle power adapter. The housing has an alternating current plug adapted to be insertable into an alternating current source. The housing further encloses a universal serial bus. Power conversion... Agent: Ever Win International Corporation

  
10/04/2012 > 30 patent applications in 18 patent subcategories. categorized by USPTO classification

20120250356 - Dc/dc converter, power converter and control method thereof: A DC/DC converter, a power converter and a control method thereof are disclosed, wherein the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into... Agent: Delta Electronics (shanghai) Co., Ltd.

20120250357 - Power supplying device and image forming apparatus having the same: A power supplying device provides power to the body of an image forming apparatus and an optional device connected to the body of the same. The power supplying device comprises: a rectifier circuit which rectifies an alternating current inputted from an alternating-current source; a booster circuit which boosts and smooths... Agent: Konica Minolta Business Technologies, Inc.

20120250358 - Dc/dc converter, power converter and control method thereof: A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into... Agent: Delta Electronics (shanghai) Co., Ltd.

20120250359 - Grid tied inverter, system and method: D

20120250361 - Dc/dc converter, power converter and control method thereof: A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit having a load, a rectangular wave generator having a bridge arm, a resonant tank, a detection unit and a control unit. The bridge arm includes a first and a... Agent: Delta Electronics (shanghai) Co., Ltd.

20120250360 - Llc controller with programmable fractional burst frequency: A controller for use in an LLC resonant converter is disclosed. An example controller is controlled by detecting a maximum frequency signal to set a maximum switching frequency of the LLC resonant converter. A burst stop frequency and a burst start frequency are programmed in response to the maximum switching... Agent: Power Integrations, Inc.

20120250362 - Switching regulator control circuit: In a switching regulator control circuit according to aspects of the invention, a drain current is converted to a voltage Vis with a resistance. The voltage is delivered to a multiplication circuit. The multiplication circuit generates and outputs a voltage that is a product signal of the voltage and a... Agent: Fuji Electric Co., Ltd.

20120250364 - Flyback converter with forward converter reset clamp: A power supply includes a first power converter having a first transformer coupled to an input of the power supply and to a first output of the power supply. A clamp reset circuit is coupled to the first transformer. The clamp reset circuit includes a capacitor coupled to the first... Agent: Power Integrations, Inc.

20120250363 - Interleaved power converter and controller therefor: Disclosed is an interleaved power converter for converting a DC voltage source into a DC voltage output.... Agent: Tdk-lambda Uk Limited

20120250366 - Flyback converter with primary side and secondary side feedback control and method for the same: A flyback converter with primary side and secondary side feedback control includes a transformer, a secondary-side feedback unit and a feedback control unit. The secondary-side feedback unit is electrically connected to a secondary winding of the transformer and comprises an isolated signal transceiver device and an error amplifier. The feedback... Agent:

20120250365 - Switching power supply: A switching power supply includes a rectifying unit configured to rectify an input alternating voltage, a storage unit configured to smooth the voltage rectified by the rectifying unit and store as a DC voltage, a pulse signal generation unit configured to generate a pulse signal from the DC voltage stored... Agent: Canon Kabushiki Kaisha

20120250367 - Control device of the switching frequency of a quasi-resonant switching converter and related control method: A control device for a QR switching power converter is described; said power converter is adapted to convert an input signal to a DC output signal and comprises a power switch connected to said input signal and adapted to regulate said DC output signal and magnetic storage means. The control... Agent: Stmicroelectronics S.r.l.

20120250368 - Power supply controller with input voltage compensation for efficiency and maximum power output: A controller for regulating an output of a power supply includes a logic block and an oscillator. The logic block generates the drive signal to control switching of a power switch in response to a clock signal. The clock signal has a frequency that decreases responsive to a time period... Agent: Power Integrations, Inc.

20120250369 - 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

20120250370 - High frequency power supply device: There is provided a high frequency power supply device. The power control unit comprises an impedance adjuster that includes a variable reactance element and adjusts a load side impedance by changing a reactance value of the variable reactance element, and an impedance control unit that controls the variable reactance element... Agent: Daihen Corporation

20120250371 - Controlling an inverter device of a high voltage dc system for supporting an ac system: The invention concerns a method of controlling an inverter device, a control device as well as an inverter device and a direct current power transmission system. The direct current power transmission system is provided for connection to an AC voltage bus of an AC power system and comprises the control... Agent: Abb Technology Ag

20120250372 - Grid tied inverter, system and method: A grid tied inverter comprising an unfolding circuit connectable to an electricity grid; and a DC to DC current fed converter operable to generate a current waveform from a battery, the current waveform being substantially synchronised to the electricity grid, wherein the unfolding circuit is operable, in a first mode,... Agent: Sony Corporation

20120250373 - Grid tied inverter, system and method: A grid tied inverter connectable to an electricity grid having a DC to DC current fed push-pull inverter to generate a current waveform from a DC voltage source. The push-pull inverter includes a transformer having a first side winding connectable to a battery and a second side winding connectable to... Agent: Sony Corporation

20120250374 - Grid tied inverter, system and method: A grid tied inverter connectable to an electricity grid, the grid tied inverter comprising a DC to DC current fed push-pull converter operable to generate a current waveform from a DC voltage source, the current waveform being substantially synchronised to the electricity grid, and a transformer having a first side... Agent: Sony Corporation

20120250375 - Power converter: A power supply unit has one end on the low potential side, said end being connected to a switching element on the power supply line side, and serves as an operation power supply for outputting a switch signal to the switching element. A switching element includes a first and a... Agent:

20120250376 - Soft starter for phase-shifting autotransformer ac-dc power converter: An AC-DC power converter has a phase-shifting autotransformer based rectifiers and DC capacitors. Soft start of the AC-DC power converter is achieved by designing the autotransformer to operate at a low peak flux density at a point of AC voltage step application (initial turn on). The addition of a controlled... Agent:

20120250377 - Voltage adjusting circuit and contactless card and contactless card system which include the same: A voltage adjusting circuit includes an inducing circuit configured to induce a voltage from electromagnetic waves, a first rectifying circuit configured to rectify an output signal of the inducing circuit, a second rectifying circuit configured to rectify the output signal of the inducing circuit, a first regulator configured to regulate... Agent: Samsung Electronics Co., Ltd

20120250378 - Burst-mode operation of a switching converter: Disclosed is a method for driving a switching element in a switching converter in the burst mode and a controller for a switch in switching converter.... Agent: Infineon Technologies Ag

20120250379 - Ota feedback mechanism for fixed feedback voltage regulators: An operational transconductance amplifier used in conjunction with a multiple chip voltage feedback technique allows multiple strings of LEDs and current sinks to be efficiently powered by a simple feedback oriented voltage regulator within an appliance. A connected series of differential amplifiers or multiplexors are used to monitor the voltages... Agent: Advanced Analogic Technologies, Inc.

20120250380 - Electric power conversion apparatus: An electric power conversion apparatus includes a plurality of semiconductor modules, a frame, a control circuit board, and a reinforcing and fixing member. Each of the semiconductor modules has a plurality of control terminals. The frame receives the semiconductor modules therein. The frame has, at least, a pair of side... Agent: Denso Corporation

20120250381 - Power supply circuit: a transistor to increase an inductor current when turned on; a diode to output the inductor current when the transistor is turned off; a capacitor to generate a DC voltage; a detection circuit to detect the inductor current; and a switching control circuit to perform switching of the transistor, when... Agent: Semiconductor Components Industries, LLC

20120250382 - Resonant isolated converters for power supply charge balancing systems and other systems: A converter circuit includes a primary side having a resonator and a first control circuit configured to control the resonator. The converter circuit also includes a secondary side having a resonant rectifier and a second control circuit configured to control the resonant rectifier. The converter circuit further includes a transformer... Agent: National Semiconductor Corporation

20120250383 - Voltage adjusting circuit, contactless card and contactless card system having the same, and methods of operating the voltage adjusting circuit and the contactless card: A voltage adjusting circuit is provided includes an inducing circuit configured to induce a voltage from electromagnetic waves, a first rectifying circuit configured to rectify an output voltage of the inducing circuit, a control circuit configured to control an output voltage of the first rectifying circuit in response to the... Agent: Samsung Electronics Co., Ltd.

20120250384 - Inverter device: An inverter device including a plurality of switching elements that convert electric power between DC power and AC power, a base plate that includes a surface on which the switching elements are placed, AC terminals through which AC power is input and output to and from an external device and... Agent: Aisin Aw Co., Ltd.

20120250385 - Temperature detecting apparatus, temperature detecting circuit and power semiconductor module: A temperature detecting apparatus includes a temperature detecting circuit configured to output a first pulse signal according to a temperature detected by a temperature sensor, and an insulating transformer configured to transmit the first pulse signal to an integrated circuit which is operated by an operation voltage different from that... Agent: Rohm Co., Ltd.

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