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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.
  
09/04/2014 > 14 patent applications in 13 patent subcategories.
  
08/28/2014 > 11 patent applications in 11 patent subcategories.

20140241011 - Reactor, converter, and power converter apparatus: A reactor of the present invention includes a coil 2, a magnetic core 3 in which the coil 2 is disposed, and a case that stores a combined product 10 made up of the coil 2 and the magnetic core 3. The case includes a bottom plate portion 40 made... Agent: Sumitomo Wiring Systems, Ltd.

20140241012 - Isolated boost flyback power converter: An isolated boost power converter comprises a magnetically permeable multi-legged core (102) comprising first and second outer legs (132; 136) and a center leg (134) having an air gap (138) arranged therein. A boost inductor (Lboost) is wound around the center leg (134) or the first and second outer legs... Agent: Danmarks Tekniske Universitet

20140241013 - Load driver: A load driver includes: a rectifying unit configured to rectify an AC voltage from a power source to generate a first voltage; a first converter configured to convert the first voltage outputted from the rectifying unit into a second voltage; a second converter configured to drive a load with a... Agent: Minebea Co., Ltd.

20140241014 - Systems and methods for real-time signal sampling in power conversion systems: System and method for regulating a power conversion system. An example system controller includes a signal processing component and a driving component. The signal processing component is configured to receive a feedback signal associated with an output signal of a power conversion system and generate a processed signal based on... Agent: On-bright Electronics (shanghai) Co., Ltd.

20140241015 - Control device employed in a switched electrical power supply system: The invention relates to a control device (1) employed in a switched electrical power supply system to control a DC/DC converter of said switched electrical power supply system, said control device comprising a first input terminal (A) and a second input terminal (B), a first transistor (T1) connected via its... Agent: Schneider Toshiba Inverter Europe Sas

20140241016 - Method and apparatus for producing three-phase current: Exemplary embodiments are directed to methods and systems for producing a three-phase current to a three-phase output. Switching converters are used to generate a positive current, a negative current, and an intermediate current. The system is configured such that the produced positive current follows a path of a highest phase... Agent: Abb Research Ltd

20140241017 - Input circuit and power supply circuit: An input circuit connected to a semiconductor circuit is configured to receive a voltage indicating an on/off operation state of a power supply and to output a voltage that is lower than a breakdown voltage of the semiconductor circuit. The input circuit includes a first nMOS transistor and a resistor... Agent:

20140241018 - System and method for limiting output current in a switching power supply: A switching power supply comprises one or more power supply stages configured to receive power from an input power source and to generate an output voltage for powering a load by alternately opening and closing a set of switches. An output current sensor is configured to monitor a level of... Agent: Champion Microelectronic Corporation

20140241019 - Multi-level rectifiers: Multi-level rectifiers are provided. A multi-level rectifier may convert a medium AC voltage to a medium DC voltage. A multi-level rectifier may comprise an input inductor, a set of diodes, a set of switches, and a DC link comprising a set of capacitors. One end of the input inductor is... Agent: Varentec, Inc.

20140241020 - Rotating rectifier assembly and method: A rectifier assembly and method are provided. The rectifier assembly includes an annular bus bar including an electrically conductive material, and an insulator ring receiving the annular bus bar. The insulator ring defines radially-extending resistor pockets and diode pockets therein. The rectifier assembly also includes resistors disposed in the resistor... Agent: Hamilton Sundstrand Corporation

20140241021 - Inverter control circuit and inverter circuit: An inverter control circuit has a quantizer configured to generate a switching signal which changes over switches of a main circuit converting a DC voltage into an AC voltage, and a filter circuit configured to generate a signal having specific transfer characteristic by using a signal correlated with an output... Agent: Kabushiki Kaisha Toshiba

  
08/21/2014 > 30 patent applications in 22 patent subcategories.

20140233262 - Pseudo zero vectors for space vector modulation and enhanced space vector modulation: A method of performing space vector modulation for PWM control for creating AC waveforms includes generating and sampling a reference signal to generate reference samples and performing a reference vector approximation to synthesize a reference vector associated with at least one of the reference samples. The reference vector approximation employs... Agent: Infineon Technologies Ag

20140233263 - Tracking method and tracking device for a voltage converter for a photovoltaic system: The disclosure relates to a tracking method for a voltage transformer, in particular an inverter, of a photovoltaic system. In the method, an intermediate circuit voltage is repeatedly decreased or increased in one direction to a lower or higher voltage by voltage steps of a specified magnitude. The method is... Agent:

20140233265 - Electric power conversion system and electric power conversion method: An electric power conversion system includes: a primary circuit including a first port, a second port and a primary electric power conversion unit; and a secondary circuit magnetically coupled to the primary circuit by a transformer and including a third port, a fourth port and a secondary electric power conversion... Agent: Toyota Jidosha Kabushiki Kaisha

20140233264 - Single stage pfc power supply: A single stage power factor correction power supply consists of two transformers: a main transformer and an auxiliary transformer (forward transformer). The main transformer transfers energy from the primary circuit to secondary circuit. The auxiliary transformer is used to correct input current waveform. The advantage of this design over the... Agent:

20140233266 - Power supply system, image forming apparatus having the power supply system, and control method of the power supply system: A power supply system includes: a switching power supply for converting an AC voltage from an AC power supply into a DC voltage; a latching relay provided on an AC input line for switching a connection state of the switching power supply with the AC power supply in response to... Agent: Brother Kogyo Kabushiki Kaisha

20140233267 - Power converter and method of converting power: A power converter and a method of converting power are provided. The power converter includes a resonant converting circuit and a control circuit. The resonant converting circuit converts an input power into an output power, and provides the output power to a load. The control circuit receives a feedback signal... Agent: Delta Electronics, Inc.

20140233268 - Controller of a power converter with adjustable jitter amplitude and method of generating adjustable jitter amplitude thereof: A controller of a power converter with adjustable jitter amplitude includes a feedback pin, a logic circuit, an auxiliary pin, and a current sensing pin. The feedback pin is used for receiving a feedback voltage from a secondary side of the power converter. The feedback voltage corresponds to an output... Agent: Leadtrend Technology Corp.

20140233269 - Average input current estimation based on primary side current sense: The embodiments herein describe a power converter including a controller that estimates input current of the power converter. The controller estimates the input current without explicitly sensing the input current. The estimated input current can be used in various applications such as regulating power factor and total harmonic distortion as... Agent:

20140233270 - Voltage conversion and charging from low bipolar input voltage: A circuit includes a transformer configured with a primary winding and a secondary winding that are driven from a voltage supplied by a thermoelectric generator (TEG). The circuit includes a bipolar startup stage (BSS) coupled to the transformer to generate an intermediate voltage. The BSS includes a first transistor device... Agent: Texas Instruments Incorporated

20140233271 - Systems and methods for reducing electromagnetic interference by adjusting switching processes: System and method for regulating a power conversion system. An example system controller for regulating a power conversion system includes a signal generator and a driving component. The signal generator is configured to receive a feedback signal associated with an output signal of a power conversion system and a current... Agent: On-bright Electronics (shanghai) Co., Ltd.

20140233272 - System and method for synchronous rectifier: A synchronous rectification circuit for a power supply includes a power switch for coupling to a secondary winding of a transformer of the power supply and an output capacitor of the power supply. The power switch includes a four-terminal MOSFET having a source, a drain, a gate, and a body.... Agent: Bcd Semiconductor Manufacturing Limited

20140233274 - Power supply controller with minimum-sum multi-cycle modulation: An example power supply controller includes a signal separator circuit that generates a feedback signal. An error signal generator generates an error signal in response to the feedback signal. A control circuit generates a drive signal in response to the error signal. The drive signal controls switching of a switch.... Agent: Power Integrations, Inc.

20140233273 - Switching power source device and control ic which are capable of performing constant power control: The present invention is a switching power source device which converts AC power of an AC power source into DC power and outputs the DC power, the device including: a rectifying-smoothing circuit configured to output a rectified-smoothed voltage signal obtained by rectifying and smoothing an AC voltage of the AC... Agent: Sanken Electric Co., Ltd.

20140233275 - Adaptive active clamp of flyback power converter with high efficiency for heavy load and light load: A control circuit of a flyback power converter according to the present invention comprises a low-side transistor, an active-damper, a high-side drive circuit, and a controller. The low-side transistor is coupled to switch a transformer. The active-damper is coupled in parallel with the transformer. The high-side drive circuit is coupled... Agent: System General Corp.

20140233276 - Power converter control method: When an AC voltage is outputted to an inductive load, pulsation of an effective power caused by an odd number-th order harmonic component of a current flowing in this load is reduced. A modulation factor k of an inverter 4 includes a DC component k0 and an AC component. The... Agent: Daikin Industries, Ltd.

20140233277 - Direct current power delivery system and method: A power transmission system includes a first unit for carrying out the steps of receiving high voltage direct current (HVDC) power from an HVDC power line, generating an alternating current (AC) component indicative of a status of the first unit, and adding the AC component to the HVDC power line.... Agent: General Electric Company

20140233279 - Power conversion apparatus: An inverter circuit including a DC capacitor is connected in series to an AC power supply, and at the stage subsequent to the inverter circuit, a smoothing capacitor is connected via a converter circuit. A short-circuit period T for short-circuiting the AC terminals of the converter circuit is provided in... Agent: Mitsubishi Electric Corporation

20140233280 - Power conversion device: An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value.... Agent: Nissan Motor Co., Ltd.

20140233278 - System and method for single-phase and three-phase current determination in power converters and inverters: A system and method for capturing current information for a power converter is disclosed. The current monitoring system includes a control system operably connected to a circuit having a plurality of semiconductor switches that are controllable to convert an input power to an output power having a desired voltage and... Agent: Eaton Corporation

20140233282 - Noise filter: A noise filter is assembled to an electric power conversion device and has a metal housing casing and two capacitors connected to an external terminal of the device through which an electric power conversion circuit is connected to an external device. The two capacitors, the housing casing and the external... Agent: Nippon Soken, Inc.

20140233281 - Power converter with noise-current reduction capacitor: In a power converter, a housing is grounded. A power converter circuit is installed in the housing and configured to perform power conversion of input power into output power. An external terminal is electrically connected to the power converter circuit for connection of an external device to the power converter... Agent: Denso Corporation

20140233283 - Startup circuit and method for ac-dc converters: An AC-DC power converter includes a rectifying unit for generating a rectified voltage, an output stage for converting the rectified voltage into a DC voltage for a load, a controller for controlling the output stage, and a start-up circuit. The start-up circuit includes a start-up voltage generator coupled to the... Agent: Taiwan Semiconductor Manufacturing Company, Ltd.

20140233284 - Over voltage protection for electric machines: A system and method for protecting an electrical power generation system from an over-voltage. The output voltage of a multi-phase rectifier, operatively connected between the output terminals of an electric machine and a load, is monitored. The input of the multi-phase rectifier is short-circuited upon detection that the output voltage... Agent: Pratt & Whitney Canada Corp.

20140233285 - Integrated circuit device for power supply: An integrated circuit device, for a power supply that is connected to an AC power source via an input circuit having a capacitor, is able to reliably discharge the capacitor when the AC power source is interrupted. The integrated circuit device includes a first discharge circuit that operates in response... Agent: Fuji Electric Co., Ltd.

20140233286 - Distributed power harvesting systems using dc power sources: A method for maintaining reliability of a distributed power system including a power converter having input terminals and output terminals. Input power is received at the input terminals. The input power is converted to an output power at the output terminals. A temperature is measured in or in the environment... Agent: Solaredge Technologies Ltd.

20140233287 - Control method and system for correcting the voltages to be applied to an electrical load: A control method to be implemented in a power converter, the power converter including an inverter module controlled by a control rule that makes it possible to determine a control voltage to be applied to an electrical load on the basis of a reference control voltage. The control method includes... Agent: Schneider Toshiba Inverter Europe Sas

20140233288 - High-frequency rms-dc converter using chopper-stabilized square cells: An RMS-DC converter includes a chopper-stabilized square cell that eliminates offset, thus enabling high-bandwidth operation. The chopper-stabilized offset requires only a small portion of the circuitry (i.e., a single component square cell) which operates at high frequencies, and is amenable to using high-bandwidth component square cells. Using the chopping technique... Agent: Linear Technology Corporation

20140233290 - Inverter system and driving method for an inverter system: The present invention provides optimized driving of an inverter device. The inverter of such an inverter device may alternatively be driven in two-level operation or in three-level operation. Through a suitable selection of the driving method, the semiconductor losses in the inverter may be minimized and the thermal loading of... Agent:

20140233289 - Pseudo zero vectors for space vector modulation and enhanced space vector modulation: A method of performing space vector modulation for PWM control for creating AC waveforms includes generating and sampling a reference signal to generate reference samples and performing a reference vector approximation to synthesize a reference vector associated with at least one of the reference samples. The reference vector approximation employs... Agent: Infineon Technologies Ag

20140233291 - Inverter stack: An inverter stack includes an inverter main body housing an inverter circuit inside, and a fan block disposed on the inverter main body through an engagement device and housing a plurality of fans. The engagement device includes a bolt member penetrating through a slot formed in the inverter main body,... Agent: Fuji Electric Co., Ltd.

  
08/14/2014 > 23 patent applications in 18 patent subcategories.

20140226365 - Method for checking a separation point between a photovoltaic inverter and power supply network and photovoltaic inverter: The invention relates to a method for checking a separation point (14) between a photovoltaic inverter (1) and a power supply network (7) having multiple phases (L1, L2, L3) and a neutral conductor (N), wherein multiple switching contacts of the separation point (14) are controlled by the photovoltaic inverter (1),... Agent: Fronius International Gmbh

20140226366 - Signal transmission circuit: A signal transmission circuit includes an isolation circuit, first and second grounded gate circuits, first and second MOS transistors, and a comparator. The isolation circuit such as a thin-film transformer outputs complementary first and second output signals, based on an input signal. The first and second grounded gate circuits receive... Agent: Mitsubishi Electric Corporation

20140226367 - Forward-flyback dc-dc converter topology of high efficiency and low cost: A forward-flyback DC-DC converter topology includes a transformer, a main switch, a clamp circuit, first and second rectifying switches, an LC resonant circuit and an output capacitor; a primary winding of the transformer and the main switch are connected in series between a first input terminal and a second input... Agent: Santak Electronic (shenzhen) Co., Ltd.

20140226368 - Power conversion apparatus: A power conversion apparatus includes a switch circuit which drives switching elements based on a control signal, a feedback section which performs feedback control, a signal output section which outputs the control signal based on a controlled variable of the feedback control, an output value detecting section which detects an... Agent: Denso Corporation

20140226369 - Power converter with dead-time control function: In a power converter, a feedback controller feedback controls a manipulated variable based on a first electrical parameter depending on input power and a feedback controlled variable determined for output power. A dead-time determiner determines a value of the dead time as a function of a boundary condition variable depending... Agent: Denso Corporation

20140226371 - Control circuit and method for estimating an output current of a transformer: A control signal circuit for estimating a current output from a transformer. The control signal circuit includes a converter circuit configured to receive a signal corresponding to a current input to the transformer and output, over a half line cycle, a plurality of values corresponding to the current output from... Agent: Marvell World Trade Ltd.

20140226370 - Dimmable led power supply with power factor control: A dimmable LED power supply circuit arrangement is disclosed. The circuit arrangement includes a flyback converter coupled between an input for receiving a rectified alternating line voltage and an output providing power for at least one LED device. The flyback converter includes a transformer and a semiconductor switch for switching... Agent:

20140226372 - Voltage converter circuit and voltage converter controller: A voltage converter circuit, includes: a power switch for generating a pulse-width-modulation (PWM) signal to drive a current load, wherein the PWM signal toggles between a first level and a second level; a sensing pin, receiving a first sensing signal when the PWM signal is at the first level, and... Agent: Richtek Technology Corp.

20140226374 - Ctl cell protection: A converter cell (110; 120) is provided. The converter cell comprises a capacitor (113; 123), a first (111; 121) and a second (112; 122) switching element connected in series, a first (114; 124) and a second (115; 125) connection terminal for connecting the converter cell to an external circuit, a... Agent: Abb Technology Ag

20140226373 - Method for suppressing circulating current in modular multilevel converter for high voltage direct-current transmission: Provided is a method for suppressing a circulating current in a modular multi-level converter for a high voltage direction-current (HVDC) transmission system. The HVDC transmission system converts an alternating current (AC) into a direct current (DC) and vice versa, transmits energy using a DC cable, and including a modular multilevel... Agent: Korea Electrotechnology Research Institute

20140226375 - Power converter with non-symmetrical totem pole rectifier and current-shaping branch circuits: A hybrid diode-less power converter topology of the present invention converts power from an AC power source to a variable load with high efficiency. The power converter includes a non-symmetrical arrangement of rectifying switches for rectifying an input AC voltage and shaping switches for shaping an input AC current. The... Agent:

20140226376 - Electronic circuit: The invention provides an electronic circuit capable of reducing surge voltage while reducing switching loss when a MOSFET is turned off. A capacitor (91) is connected between apart closer to a first power source terminal (31) of a U-phase module (3) in a bus bar (61a) and a part closer... Agent: Rohm Co., Ltd.

20140226377 - Electrical converter system: The present invention relates to an electrical converter for power supply, which is constructed from individual modules. Each of the identical modules includes a module capacitor and can be switched by switching elements such that the module capacitors of the modules may be connected in series or in parallel, or... Agent: Technische Universitaet Muenchen

20140226378 - Transmission-line resistance compression networks and related techniques: A resistance compression network uses transmission line sections having asymmetric lengths to compress the resistance range of multiple loads. In some embodiments, the characteristic impedance of the transmission line sections is related to the geometric mean of the load resistance range. The resistance compression network may be used within, for... Agent: Eta Devices, Inc.

20140226379 - Method and apparatus for chaotic democratic pulse width modulation generation: An apparatus, method and system for operating a power converter of a plurality of serially connected power converters coupled using chaotic democratic control includes: a DC voltage module generating a set current value for the power converter to bias a DC source at a set point voltage and a switching... Agent: Enphase Energy, Inc.

20140226380 - Power conversion apparatus: A current flowing into one of half-bridge circuits of a power semiconductor module (10) is detected by corresponding one of current detection circuits (11a and 11b to 11f) through a current detection terminal provided in corresponding one of semiconductor switching devices (Q1 and Q2 to Q6) forming the half-bridge circuits... Agent: Fuji Electric Co., Ltd.

20140226381 - Power conversion device and power conversion method: A power conversion device generates drive command signals for switch elements of multiple phases, the drive command signals designed to control connecting and disconnecting operations of the multiple phase switch elements in such a way that a direction of a current change attributed to a connecting or disconnecting operation of... Agent: Nissan Motor Co., Ltd.

20140226382 - Power conversion device: An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value.... Agent: Nissan Motor Co., Ltd. Nagaoka University Of Technology

20140226383 - Coaxial rotating rectifier package assembly for generator: Embodiments of the disclosure include a rotating rectifier assembly for a generator having a diode pack and a connection block configured to provide electrical connections to the diode pack. The diode pack includes an inner DC ring, an outer DC ring, a plurality radially stacked diode pairs disposed between the... Agent: Hamilton Sundstrand Corporation

20140226385 - Inverter device: A switching power supply device equipped with an inverter device includes a transformer including a primary winding and a secondary winding, which are magnetically coupled with each other. On the primary side, a capacitor and a switching element are connected in series with the primary winding and a switching element... Agent: Murata Manufacturing Co., Ltd.

20140226384 - Power converter: A power converter includes pairs of series-connected switching elements and, for each pair, a bidirectional switch that clamps the switching elements of the pair at the mid-point of a DC voltage that is supplied to the power converter. An abnormal voltage rise in a forward recovery process of the bidirectional... Agent: Fuji Electric Co., Ltd.

20140226386 - Power conversion device: An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value.... Agent: Nissan Motor Co., Tld.

20140226387 - Transmission of electric power: A means is provided for the transmission of electric power that makes use of a coaxial cable and a special transformer for converting three-phase alternating current to single-phase current. The geometry of the transformer comprises a toroidal core with a chord passing through the axis. The primary is wound about... Agent:

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