|Electric power conversion systems patents - Monitor Patents|
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Electric power conversion systemsBelow 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. 12/05/2013 > 23 patent applications in 18 patent subcategories.
20130322122 - Control circuits for power converters: A control circuit for controlling one or more power switches of a power converter includes a voltage control loop and a current control loop. The control circuit is configured to generate a current reference for the current control loop using the voltage control loop and an AC reference signal. The... Agent:
20130322123 - Control device and control method during bypassing of power units: A control device and a control method during bypassing of power units are provided. The method includes: detecting a first three-phase output electrical signal; calculating a first positive sequence component and a first negative sequence component of the first three-phase output electrical signal; providing a given positive sequence component and... Agent: Delta Electronics, Inc.
20130322124 - Power supply with interference suppression, and method for operating a power supply: A switched-mode power supply comprises a transformer with a primary winding and a secondary winding. A switch is coupled in series with the primary winding and configured to repeatedly interrupt a current through the primary winding. An inductor is located differently with reference to magnetic fields that the primary and... Agent: Salcomp Oyj
20130322125 - Driving circuit for a transistor: In various embodiments, a driving circuit for a transistor is provided, wherein the transistor may include a transistor having a control terminal, a diode, a capacitance with a first terminal and a second terminal, wherein the first terminal may be coupled to the control terminal and the second terminal may... Agent: Infineon Technologies Austria Ag
20130322128 - Bidirectional dc-dc converter and method of controlling bidirectional dc-dc converter: A bidirectional DC-DC converter is configured with a transformer that has a first winding and a second winding, a first DC-AC converter that is provided between a first DC voltage line and the first winding, a second DC-AC converter that is provided between a second DC voltage line and the... Agent:
20130322127 - Current-fed full-bridge dc-dc converter: A current-fed full-bridge DC-DC converter includes a current source circuit including a direct-current voltage source circuit and a reactor connected to the direct-current voltage source circuit in series, an inverter circuit including switching elements, input terminals and output terminals, wherein outputs of the current source circuit are connected to the... Agent: Kabushiki Kaisha Toyota Jidoshokki
20130322126 - Soft-switching inverter: An inverter with soft switching is used for a high step-up ratio and a high conversion efficiency. The inverter includes an isolation voltage-quadrupling DC converter and an AC selecting switch. The isolation voltage-quadrupling DC converter includes an active clamping circuit. By a front-stage converter circuit, a continuous half-sine-wave current is... Agent: National Tsing Hua University
20130322129 - Power factor correction circuit: This is an insulation-type power factor correction circuit including a resonance unit configured to accumulate energy of a surge occurring when the first switching element is turned off and to transmit a resonance current generated by resonating the first capacitor and the primary winding of the second transformer from the... Agent: Fujitsu Limited
20130322130 - Method of forming a power supply controller and structure therefor: In one embodiment, a power supply controller is configured to adjust a peak value of a primary current through a power switch responsively to a difference between a demagnetization time and a discharge time of the parasitic leakage inductance of a transformer.... Agent:
20130322131 - Cascaded converter station and cascaded multi-terminal hvdc power transmission system: A cascade converter station and a multi-end cascade high-voltage direct current (HVDC) power transmission system. The converter station includes a low-voltage end converter station (11) and a high-voltage end converter station (12). The high-voltage end converter station (12) is connected in series with the low-voltage end converter station (11) through... Agent: State Grid Corporation Of China
20130322133 - System and method for high resistance ground fault detection and protection in power distribution systems: A system and method for detecting high resistance ground faults in a power distribution system is disclosed. A fault detection and protection system is provided that includes a plurality of current sensors to measure current on the three phase output of the converter-inverter arrangement of the power distribution system and... Agent:
20130322132 - System for power conversion: A power conversion device according to the aspects of the present technique is presented. The device includes a first converter and a second converter operatively coupled to the first converter. Moreover, the device includes a phase leg operatively coupled between the first converter, the second converter, where the phase leg... Agent: General Electric Company
20130322135 - Compact, method for producing compact, reactor, converter, and power conversion device: A method for producing a compact by using coated soft magnetic powder that includes coated soft magnetic particles constituted by soft magnetic particles and insulating coatings coating outer peripheries of the soft magnetic particles includes a raw material preparation step and an irradiation step. In the raw material preparation step,... Agent: Sumitomo Electric Industries, Ltd.
20130322134 - Noise reduction unit, power supply device, and method for disposing cores in noise reduction unit: A noise reduction unit includes a plurality of cores each having formed therein a through hole, a plurality of wires connected to a noise source and each wound around the corresponding core through the through hole, and a core supporting member that supports the plurality of cores. The core supporting... Agent: Brother Kogyo Kabushiki Kaisha
20130322136 - Advanced circuit arrangement of transformerless 1 phase pv inverter: Disclosed is an inverter with outputs being connected through two reactors to a utility network, whilst an energy storage capacitor (C) is connected to the PV array (P) such that the C + and − terminals are connected to two half bridges creating an H bridge so that the AC... Agent: Hyundai Heavy Industries Co., Ltd.
20130322137 - Power factor correction circuit: Disclosed is a power factor correction circuit. The power factor correction circuit according to an exemplary embodiment of the present disclosure includes an electrolyte capacitor and a film capacitor, where ripple burden of the electrolyte capacitor is lessened to reduce the capacity of the condenser and to lengthen the life.... Agent: Lsis Co., Ltd.
20130322138 - Voltage setting of adapter: Embodiments herein relate to setting a voltage of an adapter (100, 200). In an embodiment, the adapter is to measure a current output by the adapter, compare the measured current at the adapter to a first current and to output a DC voltage. The adapter is to set a level... Agent: Hewlett-packard Development Company, L.p.
20130322139 - Input ac voltage control bi-directional power converters: A family of power converters has input ac voltage regulation instead of output dc voltage regulation. The bi-directional converters control power flows and maintain the input ac voltage at or close to a certain reference value. These bi-directional power converters handle both active and reactive power while maintaining the input... Agent:
20130322140 - Apparatus for photovoltaic power generation and method thereof: Disclosed are an apparatus and a method for photovoltaic power generation according to the exemplary embodiment of the present disclosure configured to enhance efficiency of photovoltaic power generation, wherein the apparatus having a solar module, a booster and an inverter includes a voltage sensing unit configured to sense an output... Agent: Lsis Co., Ltd.
20130322141 - Power conversion apparatus: A filter capacitor accumulating direct-current power and a semiconductor device module performing a switching operation that converts the direct-current power accumulated in the filter capacitor to alternating-current power are electrically connected with each other through a laminated bus bar. The laminated bus bar has a first bus bar and a... Agent: Mitsubishi Electric Corporation
20130322142 - Multilevel power converter: An AC-DC power converter is provided. The power converter includes an electrical terminal including a positive node and a negative node. The power converter also includes a first switch coupled across the positive node and the negative node and a second switch coupled in a reverse orientation relative to the... Agent: General Electric Company
20130322143 - Diode substitute with low drop and minimal loading: A voltage rectifier circuit having a storage element and a switching stage that is switchable to enable the storage element to capture a peak voltage of an alternating power source. The switching stage includes transistors arranged in a back-to-back configuration. In one example, the storage element is a capacitor and... Agent: Tellabs Operations, Inc.
20130322144 - Electric power converter: There is provided a technology for realizing a low-cost electric power converter operating at low noise under a high-temperature environment. The electric power converter is provided with an enclosure, a power module including a switching element, a driver circuit for generating a signal for driving the switching element, a control... Agent: Hitachi, Ltd11/28/2013 > 19 patent applications in 15 patent subcategories.
20130314948 - Multi-phase grid interface: Circuit topologies and control methods for a multi-phase grid interface are described. In at least one embodiment, a power conversion circuit is provided that includes an inverter stage, a transformer stage, and a cycloconverter stage. The cycloconverter stage may include one cycloconverter circuit for each of multiple phases associated with... Agent:
20130314949 - Power converter and method of controlling the same: A power converter includes a full-bridge switching circuit, a resonant circuit, a transformer, an over-voltage protection unit, a PWM control unit, a trigging control unit, and a driving unit. The over-voltage protection unit detects an output voltage of the power converter to produce an output voltage signal. The PWM control... Agent: Delta Electronics, Inc.
20130314950 - Push-pull converter and modulation method for controlling a push-pull converter: The invention relates to a push-pull converter (4) comprising a primary-side input converter circuit (44) with a plurality of primary-side switching devices (31, 32, 33, 34) in a full-bridge circuit, said input converter circuit being designed to convert an input DC voltage (42) into a first AC voltage, and comprising... Agent: Robert Bosch Gmbh
20130314951 - Resonant converter and methods of operating: A resonant converter including: a resonant tank, a switching circuit that connects the resonant tank to a power supply according to a first switching sequence, a synchronous rectifier circuit that supplies power to an output, wherein the rectifier circuit is switched according to a second switching sequence, and a phase... Agent: Eaton Development Centre
20130314953 - Harmonic regulator for current source rectification and inversion: A system includes a current source rectifier which has a plurality of switches configured to receive an input current from an AC voltage source and to receive a plurality of control signals. The switches are configured to produce a rectified output current based on the input current and the control... Agent: Engineered Electric Company D/b/a Drs Fremont
20130314952 - Single-phase reactor power saving device: A single-phase reactor power saving device, used to receive an AC power supply, and comprising: a first capacitor, connected electrically to said AC power supply, to store electric energy; a first and a second reactor, connected electrically to said first capacitor, to output first AC self-induced energy, and second AC... Agent: Rong Shin Jong Co., Ltd.
20130314954 - Power supply input routing: One embodiment of a power supply input routing apparatus can include a multilayer printed circuit board configured to accept only an alternating current (AC) line voltage, return and ground signals. The AC power jumper board can advantageously route AC power from one section of the power supply to another without... Agent: Apple Inc.
20130314955 - Conversion system for multi direct current voltage: A conversion system includes a transformer, a rectifier element, a filter circuit, a voltage regulator circuit, and a divider circuit. The voltage regulator circuit includes a first option switch, a first regulator, and a second regulator. The transformer outputs an AC voltage, and the rectifier element converts the AC voltage... Agent: Hong Fu Jin Precision Industry (wuhan) Co., Ltd.
20130314956 - Basic function unit of voltage-source converter based on full-controlled devices: The present invention relates to a basic function unit of voltage source converter, which is characterized in that the basic function unit includes a switching device function module, a by-pass function module, a switch protection function module, a secondary control and protection function module, and a energy storage unit. The... Agent: China Electric Power Research Institute
20130314957 - High voltage high power multi-level drive structure: A high voltage, high power multi-level drive structure includes a plurality of neutral-point-piloted (NPP) converter cells stacked together. At least one clamping diode is connected to one or many NPP converter cell to provide a neutral-point-pilot-clamped (NPPC) converter structure. Flying capacitors connected to the NPPC converter structure yield a neutral-point-clamped-flying-capacitor... Agent: General Electric Company
20130314958 - Soft switching power converters: Soft switching power converters are described. In one example, a solar power converter includes an inverter input to receive a direct current (DC) power input and an output to provide an alternating current (AC) power output. The converter includes a first and a second power branch, and a controller. The... Agent:
20130314959 - Control arrangement and method for regulating the output voltage of a dc source power converter connected to a multi-source dc system: A converter control arrangement for regulating the output voltage of a dc source power converter connecting an ac system to a HVDC system to enable dc electrical power to be supplied from the ac system to the HVDC system comprises a dynamic droop control device including first and second droop... Agent:
20130314960 - Direct current voltage generating apparatus: An exemplary direct current (DC) voltage generating apparatus for generating stable DC voltages includes a voltage conversion circuit, a voltage control circuit, and a voltage regulating circuit. The voltage conversion circuit receives an alternating current (AC) voltage, and converts the AC voltage to a first DC voltage. The voltage control... Agent: Hong Fu Jin Precision Industry (wuhan) Co., Ltd.
20130314961 - Switch control device, power supply device comprising the same, and driving method of power supply device: The present invention relates to a switch controller, a power supply including the same, and a driving method thereof. An AC input of the power supply is connected to a rectification circuit. The power supply includes a power switch to which the AC input passed through the rectification circuit flows... Agent: Fairchild Korea Semiconductor Ltd.
20130314962 - Three-phase reactor power saving device: A three-phase reactor power saving device, comprising: a first capacitor set, connected electrically to a three-phase AC power supply, to store electric energy; a reactor set, connected electrically to said first capacitor set, to convert said electric energy into AC self-induced energy; a three-phase transformer, connected electrically to said reactor... Agent: Rong Shin Jong Co., Ltd.
20130314963 - Power conversion apparatus: Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module... Agent: Hitachi, Ltd.
20130314964 - Reactor: A small reactor capable of appropriately measuring the temperature of a coil is provided. The reactor includes a coil 2 including a pair of coil elements 2a and 2b and a magnetic core including a pair of inner core portions 31 disposed in the respective coil elements 2a and 2b... Agent: Sumitomo Electric Industries, Ltd.
20130314965 - Inverter device: An inverter device includes a DC positive input line and a DC negative input line, a main bridge which includes a pair of series-connected switching elements with diodes being connected in reverse parallel with the switching elements respectively, an auxiliary bridge which includes a pair of series-connected switching elements with... Agent: Kabushiki Kaisha Toshiba
20130314966 - Power converter: A power converter (100) comprises a cooler (20) having a cooling flow path (21) in which a refrigerant flows, a base plate (31) to which switching elements (32) are attached, a control circuit board (33) on which power-generating elements (34) are attached, and securing pins (40) that secure the base... Agent: Toyota Jidosha Kabushiki Kaisha11/21/2013 > 19 patent applications in 17 patent subcategories.
20130308344 - Power converter and method: A power converter apparatus includes a primary bridge having a plurality of diagonally opposed primary power elements, and a secondary bridge having a plurality of diagonally opposed secondary power elements. The primary and secondary bridges are electrically coupled by a transformer. At least one control unit is configured to phase-shift... Agent:
20130308345 - Variable duty cycle switching with imposed delay: Power conversion methods, systems, articles of manufacture, and devices are provided. The power conversion may include converting between direct current and alternating current wherein switching losses associated with latent electrical charges are reduced. Current sensing may be low-side bus reference. Solid-state implementations, code implementations, and mixed implementations are provided.... Agent: Solarbridge Technologies, Inc.
20130308346 - Active ac snubber for direct ac/ac power converters: Active AC snubbers for AC/AC converters are provided. The active snubbers are actively-controlled AC snubbers that may be used in AC/AC power converters including direct AC converters. The active snubbers provide a free-wheeling path for AC/AC converters, ensuring that the converters are tolerant of errors in measurements and timings and... Agent: Georgia Tech Research Corporation
20130308347 - Resonant switching power supply device: A winding voltage arising in a first winding on the primary side of a transformer is detected in a winding voltage detector unit formed of a second winding, and current flowing through a resonant circuit is detected in a resonant current detector unit formed of an auxiliary capacitor and a... Agent: Fuji Electric Co., Ltd.
20130308348 - Converter: A converter includes a transformer module, a primary side circuit module, and a secondary side circuit module. The transformer module includes a magnetic core group and a winding. The winding includes a primary winding and a secondary winding, and is further installed on the magnetic core group. The primary side... Agent: Delta Electronics, Inc
20130308349 - Switching regulator, the control circuit and the method thereof: A switching regulator that decreases power loss and resolves thermal issues by jumping its switching frequency to a maximum frequency when its load reaches a peak load.... Agent: Monolithic Power Systems, Inc.
20130308350 - Systems and methods for constant voltage mode and constant current mode in flyback power converters with primary-side sensing and regulation: System and method for regulating a power converter. The system includes a first signal generator configured to receive at least an input signal and generate at least a first output signal associated with demagnetization and a second output signal associated with sampling. Additionally, the system includes a sampling component configured... Agent: On-bright Electronics (shanghai) Co., Ltd.
20130308351 - High voltage inductor filter apparatus and method of use thereof: The invention comprises a high frequency inductor filter apparatus coupled with an inverter yielding high frequency harmonics and/or non-sixty Hertz output. For example, an inductor/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency, modulated by a fundamental frequency, and a set of... Agent: Ctm Magnetics, Inc.
20130308352 - Method for improving performance of filter and power conversion apparatus: A power conversion apparatus is disclosed in the present application. The power conversion apparatus comprises: a power converter comprising an energy-storage magnetic component, and a filter comprising an inductor component and a two-port network connected the energy-storage magnetic component and the inductor component, wherein a series resonance is formed by... Agent: Delta Electronics, Inc.
20130308353 - Near zero current-ripple inversion or rectification circuits: The present invention relates to a near zero current-ripple inversion circuit including top and bottom cells, a transformer (T1) comprising primary windings (P1, P2) and a secondary winding (S1), and at least one middle cell connected in series between the top and bottom cells. The top cell comprises two capacitors... Agent: National Taiwan University Of Science And Technology
20130308354 - Power supply noise reduction circuit and power supply noise reduction method: To provide a power supply noise reduction circuit and a power supply noise reduction method that do not require circuit elements to be increased in size and do not cause voltage drop in a power supply voltage. A power supply noise reduction circuit 10 that reduces noise included in a... Agent: Verigy (singapore) Pty. Ltd.
20130308355 - Power converter and matrix converter: The number of ICs used for a power converter is reduced. The power converter includes n power transistors each having an emitter terminal or a source terminal connected to a common line, and driver ICs. Each of the driver ICs includes n pre-drivers that drive the respective n power transistors,... Agent: Renesas Electronics Corporation
20130308356 - Input relay architecture for rectifying power converters and suitable for ac or dc source power: Power converter circuitry for converting power from a power source of any one of a number of power source types, and in which arcing at relays in the event of a shutdown is avoided. A shunt circuit is provided in inrush and protection circuitry of the power converter, the circuit... Agent: General Electric Company
20130308357 - Three-level unit inverter system: In aspects of the invention, each three-level inverter unit has an output current detector. The output from each detector is given to connection wires via a resistor, the connection wires connecting the inverter units. The voltage across the resistor is detected and the deviation, or increment, of the current value... Agent: Fuji Electric Co., Ltd.
20130308358 - Power conversion apparatus: According to one embodiment, a controller determines the polarity of the input voltage detected by an input voltage detector. Then, when the polarity of the input voltage is positive, the first switch is subject to pulse driving, and when the polarity of the input voltage is negative, the second switch... Agent: Toshiba Tec Kabushiki Kaisha
20130308360 - Power factor correction circuit: Provided is a power factor correction circuit capable of reducing ringing sound of a transformer produced when an overshoot protection is effected. An output voltage control circuit performs constant voltage-control such that capacitor charge voltage of an output capacitor corresponds to a first voltage value, and when the capacitor charge... Agent: Shindengen Electric Manufacturing Co., Ltd.
20130308359 - Switching power supply device: In some aspects of the invention, a zero current detecting circuit of a switching power supply device detects a gradient of the current flowing in an inductor in the OFF state of the switching element and detects the timing at which the current through the inductor becomes zero corresponding to... Agent: Fuji Electric Co., Ltd.
20130308361 - Transformer tap-changing circuit and method of making same: A transformer tap-changing circuit comprises an apparatus that includes a transformer comprising a secondary winding configured to inductively couple to a primary winding when a current is passed through the primary winding from an energy source, a first rectifier coupled to the secondary winding and configured to rectify a first... Agent:
20130308362 - Switched power converter: This is highly advantageous in that a force is applied to the power transistor by the spring element. This will press the power transistor against the heat sink on whose side the transistor is arranged. Thermal contact is thus established between the power transistor and the heat sink, and heat... Agent: Kollmorgen Ab11/14/2013 > 29 patent applications in 20 patent subcategories.
20130301303 - Power controllers and control methods: Disclosed include power controllers and related control methods. A disclosed power controller has a pulse generator, a sample/hold device, a comparator, and a switch controller. The pulse generator provides an enable signal, defining an enable time. The comparator has two inputs capable of being coupled to a reference signal and... Agent: Leadtrend Technology Corp.
20130301301 - Power over ethernet to usb adapter: s
20130301302 - Power supply and power controller: Power supplies and power controllers are disclosed. A disclosed power supply has a power controller, a power switch, an auxiliary winding, a first circuit and a second circuit. The power controller is a monolithic integrated circuit with a multi-function pin and a gate pin. A control node of the power... Agent: Leadtrend Technology Corp.
20130301304 - Dc-dc converter: A DC-DC converter in which a primary side and a secondary side are insulated by a transformer, includes: two diodes having anodes respectively connected to both ends of a secondary winding of the transformer and cathodes connected to each other; a series circuit composed of a resistor and a capacitor... Agent: Mitsubishi Electric Corporation
20130301305 - Llc controller with programmable fractional burst frequency: A method of controlling an LLC resonant converter includes programming a burst stop frequency and a burst start frequency in response to a maximum switching frequency of the LLC resonant converter. The burst stop frequency and the burst start frequency are fractions of the maximum switching frequency. The LLC resonant... Agent:
20130301307 - Resonant power converter: A resonant power converter includes a resonance tank formed by a capacitance component and an inductance component, at least two switches connected to the resonance tank and a voltages source in a bridge configuration, a number of snubber capacitors connected in parallel to each of the switches, a controller configured... Agent: Abb B.v.
20130301306 - Switching power supply device: In a switching power supply device with reduced size and increased power conversion efficiency, a secondary-side rectifier circuit includes an adder-rectifier circuit that stores a voltage generated in a secondary winding in a capacitor as electrostatic energy in an on period of one of a high-side and low-side switching circuits... Agent:
20130301308 - Switching power supply device: In a switching power supply device with reduced size and increased power conversion efficiency, a first resonant circuit including a series resonant inductor and a series resonant capacitor, and a second resonant circuit including a series resonant inductor and a series resonant capacitor, are caused to resonate with each other... Agent:
20130301309 - Control circuits and control methods for flyback converters and ac-dc power converters thereof: The present invention relates to control circuits and methods for a flyback converter and AC-DC power converters thereof. In one embodiment, a control circuit can include: (i) a turn-on signal generating circuit that is configured, in each switching cycle, to receive a drain-source voltage of a power switch of the... Agent: Silergy Semiconductor Technology (hangzhou) Ltd
20130301310 - Isolated switching mode power supply and the method thereof: An isolated switching mode power supply, having: an input terminal; an output terminal; a transformer having a primary winding and a secondary winding; a primary power switch coupled to the primary winding; a secondary power switch coupled between the secondary winding and the output terminal of the power supply; a... Agent: Chengdu Monolithic Power Systems Co., Ltd.
20130301311 - Switching mode power supply and the method thereof: A switching mode power supply, having: an input port; an output port; an energy storage component and a pair of power switches coupled between input port and the output port; an error amplifier configured to generate an amplified error signal based on the feedback signal and the reference signal; an... Agent: Chengdu Monolithic Power Systems Co., Ltd.
20130301312 - Isolated switching power supply apparatus: An isolated switching power supply apparatus includes a transformer, a primary-side circuit that includes at least a switching element and supplies input power from an input terminal to a primary winding by controlling on/off of the switching element, and a secondary-side circuit that is electrically isolated from the primary-side circuit... Agent:
20130301313 - Hvdc system and method to control a voltage source converter in a hvdc system: A method to control a voltage source converter (CON1; CON2) in a HVDC system comprises the step of controlling a frequency and a voltage amplitude of an AC voltage (UV1; UV2) generated by the voltage source converter (CON1; CON2) independently of the conditions in an AC network (N1; N2) connected... Agent: Abb Technology Ag
20130301315 - Method for operating an inverter, and control device: A method for limiting an output power of an inverter having an output bridge and an upstream boost converter includes determining a first measurement variable representative of a bridge temperature and a second measurement variable representative of an output power of the inverter. The method also includes determining a third... Agent:
20130301314 - Multilevel inverter device and method: An embodiment multilevel inverter comprises a first boost apparatus having an input coupled to a positive dc bus and a second boost apparatus having an input coupled to a negative dc bus. The multilevel inverter further comprise a first switch coupled to an input of an L-C filter and the... Agent: Futurewei Technologies, Inc.
20130301316 - Power-level waveform generation method: The present invention relates to a method of generating various alternating current waveforms, at power level. The AC mains power supply is rectified, processed by various circuits, controlled by a control unit and inverted as required at the output. This method may be employed with converter isolation from the mains.... Agent:
20130301317 - Switching power supply device: Provided is a switching power supply device capable of sufficiently removing ripple noise due to the switching frequency, the ripple noise being superimposed on an AC line, thereby stabilizing an output voltage. The switching power supply device includes: a switch including a first main terminal and a second main terminal,... Agent:
20130301318 - Drive unit for switching element and method thereof: The present application provides a drive unit for a switching element, the driving unit having a function that is capable of promptly detecting the flow of excess current. The unit is usable for an electrical rotating machine. A drive unit for a switching element, comprising: a sense terminal output current... Agent: Denso Corporation
20130301319 - Printed circuit board: A power source circuit includes a switching circuit 4 that converts a direct current voltage obtained by converting an alternating voltage from an alternating power source input through a pair of power supply lines 2 and 3 into a predetermined direct current voltage by a switching operation. A fuse 5... Agent: Canon Kabushiki Kaisha
20130301320 - Compact high-power diode/thyristor rectifier architecture: A Graëtz-bridge converter-rectifier in which at least one rectifier arm situated between a single AC terminal and a single DC terminal includes multiple unidirectional electronic components connected in parallel and connected on one side to the DC terminal by means of a conductive component set and on the other side... Agent: Alstom Technology Ltd.
20130301322 - Method and apparatus for improved burst mode during power conversion: A method and apparatus for power conversion. In one embodiment, the method comprises operating an inverter in bursts by (i) enabling power production by the inverter during a first plurality of periods, and (ii) disabling power production by the inverter during a second plurality of periods.... Agent:
20130301321 - Tracking converters with input output linearization control: In a preferred embodiment, a voltage inverter comprises a voltage converter circuit and a controller. The voltage inverter produces a time-varying output voltage from an input voltage, which can be a DC input voltage or an AC input voltage. The controller provides a control signal at a duty ratio determined... Agent:
20130301323 - Power conversion apparatus: A power conversion apparatus includes: a bridge circuit between AC and DC ends; a converter circuit between the bridge circuit and the DC end; and a control device for the converter circuit. The converter circuit includes: first and second switches in series between terminals of the bridge circuit; third and... Agent: Denso Corporation
20130301324 - Electro-magnetic interference reduction circuit for power converters and method thereof: The present invention provides a circuit of reducing electro-magnetic interference for a power converter. The circuit includes an oscillator, a switching voltage divider, and a sample-and-hold circuit. The oscillator has a terminal for receiving a modulation voltage. The modulation voltage is correlated with an input voltage obtained from an input... Agent: System General Corporation
20130301325 - Procedures for the operation of an electrical circuit: A method for operating an electrical circuit is described. The electrical circuit is equipped with a power converter (10) that has at least one series connection (11, 12, 13) consisting of at least four power semiconductor elements. The electrical circuit is equipped with at least one capacitor (Cd1, Cd2) connected... Agent: Ge Energy Power Conversion Gmbh
20130301326 - Method and apparatus for controlling thermal cycling: A method for reducing thermal cycling of a semiconductor power switch includes obtaining a value indicative of a junction temperature of the power switch. The method also includes selecting one of several pre-determined gate drive voltages, based on the obtained value, and providing the selected gate drive voltage to a... Agent:
20130301327 - System and method of parallel converter current sharing: In one aspect, a method of converting power is described. One embodiment of the method comprises receiving direct current (DC) power; channeling the DC power through an inverter including a first bridge and a second bridge, wherein each of the first bridge and the second bridge includes at least one... Agent: General Electric Company
20130301328 - Power conversion apparatus: A power conversion apparatus according to an embodiment includes a cooling jacket. The cooling jacket includes a mounting face on which a power module including a power semiconductor device is mounted, a plurality of radiation fins that are arranged along a predetermined direction over the substantially whole area of the... Agent: Kabushiki Kaisha Yaskawa Denki
20130301329 - Electrical circuit, in particular used for generating electrical power: An electrical circuit, in particular a circuit used for generating electric power, wherein this circuit comprises a generator with n phases, a converter and a transformer to which a p-phase load can be connected. The converter comprises m partial converters, each of the partial converters is composed of p units... Agent: Converteam Technology Ltd.Previous industry: Illumination
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