Electric power conversion systems patents - Monitor Patents
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Electric power conversion systems

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
02/05/2015 > 17 patent applications in 14 patent subcategories.

20150036388 - Compact structure of power-supply apparatus capable of minimizing electromagnetic noise: A power-supply apparatus is provided which includes a transformer, a primary semiconductor unit, a secondary semiconductor unit, and a secondary electronic device. Each of the primary semiconductor unit and the secondary semiconductor units has a plurality of semiconductor devices installed therein. The transformer, the primary semiconductor unit, the secondary semiconductor... Agent:

20150036389 - Power device: An energy efficient apparatus includes a switching device, a frequency dependent reactive device, and a control element is provided. The switching device is coupled to a source of electrical power and includes a pair of transistors and is adapted to receive a control signal and to produce an alternating current... Agent:

20150036390 - Synchronous rectifier control for a double-ended isolated power converter: An apparatus comprises a power converter circuit and a control circuit. The power converter circuit includes a primary circuit side and a secondary circuit side. The primary circuit side includes a plurality of primary switches, and the secondary circuit side includes a plurality of synchronous rectifiers and an inductor. The... Agent:

20150036391 - Voltage control for an output transistor of a signal output stage: The invention relates to a signal (feed) separator for dead-zero or live-zero measurement signals. The signal (feed) separator has a primary-side (feed) input, a secondary-side output, a direct-current transformer for transferring primary-side measurement input current, an output stage for providing a secondary-side measurement output current, and an auxiliary energy feed-in... Agent: Phoenix Contact Gmbh & Co. Kg

20150036392 - Primary side regulator: A primary side regulator according to an embodiment includes a power switch connected to a primary winding, a secondary winding configured to be insulated and coupled to the primary winding, a diode connected between the secondary winding and an output terminal, and an auxiliary winding coupled to the primary winding,... Agent:

20150036393 - Systems and methods for reducing standby power consumption of switch-mode power converters: Power conversion system and method. The system includes a first capacitor including a first capacitor terminal and a second capacitor terminal, a second capacitor including a third capacitor terminal and a fourth capacitor terminal, and a plurality of diodes including a first diode, a second diode, a third diode, and... Agent:

20150036394 - Method and apparatus of frequency modulation for power saving of adaptive power converter: The present invention proposes a method for controlling an adaptive power converter. The method comprises: generating an output-sense signal by sampling a reflected voltage of a transformer; receiving a feedback signal related to an output power of the adaptive power converter; generating a clock signal in response to the feedback... Agent:

20150036395 - Internal inverter communications: Inverter internal communication features are disclosed. A multiple-stage inverter includes DC to DC and DC to AC converter switches in different power domains, which share no common return path connection. Operating parameters for converter switches in both power domains are determined by a single controller, located in one of the... Agent: Solantro Semiconductor Corp.

20150036396 - Converter with transformer flux walk protection controller: An assembly includes a converter and a controller. The converter has a winding around a transformer core, first and second switches configured to alternately connect respective winding segments to an input power, and first and second resistors respectively connected in series with the switches. The controller is configured to compare... Agent: Lear Corporation

20150036397 - Inverter and over current protection method thereof: An inverter and an over current protection method thereof are provided. The inverter includes an inverting circuit, a filtering capacitor and an over current protection circuit. The inverting circuit is configured to convert a DC input voltage into an AC output voltage and provide the AC output voltage to a... Agent:

20150036398 - Multilevel converter system: A power converter is provided. The power converter includes at least one leg. The at least one leg of the power converter includes a plurality of switching units. The switching units are coupled with each other in a serial fashion. Further, in the power converter, the switching units are selected... Agent: General Electric Company

20150036399 - Copy system for copying parameter of inverter: The present invention relates to a copy system for copying parameter of inverter configured to improve portability and convenience by copying parameter of inverter through synchronization utilizing a smart copier, and to easily, simply and quickly perform parameter copying of inverter, wherein the system includes a smart copier stored with... Agent: Lsis Co., Ltd.

20150036400 - Modulation of switching signals in power converters: There is provided a method and control system for controlling a switching device in a power converter according to a modulation scheme. The switching device couples a direct current (DC) source to provide an alternating current (AC) output at a particular switching frequency. The method comprises the step of, in... Agent:

20150036401 - Dc power supply circuit: In a DC power supply circuit, upon a switching element switching to a turned-on state, a first current path is formed from an output terminal at a high-potential side of a rectifier circuit to an output terminal at a low-potential side of a rectifier circuit, via an inductor and the... Agent:

20150036402 - Power system controlling and monitoring power semiconductor devices employing two serial signals: A power system includes a power semiconductor devices; a control circuit outputting first firing signals each being for a corresponding power semiconductor device, and outputting first activation response signals each being associated with a corresponding power semiconductor device. A first interface circuit cooperates with the control circuit to input a... Agent: Eaton Corporation

20150036404 - Converter controller with half bridge adaptive dead time circuit and method: The present disclosure relates to a controller, a circuit and method for controlling a power converter using pulse width modulation (PWM). At least one logic block (13, 15, 16) of the controller is configured to remove a command (4) which is configured to control the other power semiconductor switch (2)... Agent: American Power Conversion Corporation

20150036403 - System and method for a power converter: In accordance with a preferred embodiment of the present invention, an inverter circuit includes a direct current (DC)-to-DC power converter configured to receive an input energy from a device via a first input terminal and a second input terminal, where the DC-to-DC power converter is configured to convert a first... Agent: Infineon Technologies Austria Ag

01/29/2015 > 16 patent applications in 13 patent subcategories.

20150029757 - Electric power source device equipped with transformer: An electric power source device has a transformer, primary side semiconductor components, secondary side semiconductor components, a choke coil, a base plate and first circuit substrate and one or more second circuit substrates. The transformer has a primary side coil and a secondary side coil. The primary side semiconductor components... Agent:

20150029759 - Electric power source device: An electric power source device has a transformer, a primary-side semiconductor module, a secondary-side semiconductor module, a secondary-side electrical component, a base plate and a circuit substrate on which substrate-side electrical components are mounted. The primary-side semiconductor module has a larger exterior size than the secondary-side electrical component. The primary-side... Agent:

20150029761 - Voltage converter: The invention relates to a voltage converter (100), including: a plurality of two-way conversion cells (303), each cell comprising a primary circuit (307, Wp), and a secondary circuit (308, Ws) that is insulated from the primary circuit, wherein each circuit can be separately activated in order to supply an output... Agent:

20150029760 - Voltage feed-forward compensation and voltage feedback compensation for switched mode power supplies: A digital control unit generates a control signal to control a duty cycle of a switched mode power supply such that a faster response to an input voltage transient is achieved. The digital control unit comprises a feedback compensator, a feed forward compensator, a transient detector, and a controller. The... Agent: Telefonaktiebolaget L M Ericsson (publ)

20150029758 - Wide input dc/dc resonant converter to control reactive power: A DC/DC resonant converter system includes a primary converter unit having a split resonant tank circuit. The resonant converter unit further includes a plurality of primary switching units that control the current flowing into the split resonant tank circuit. A controlled secondary rectifier unit includes a plurality of rectifier switching... Agent: Raytheon Company

20150029762 - Voltage converter compensation apparatus and methods: On the secondary side of a flyback switching power converter, a compensation diode and a voltage divider with an averaging circuit generate an output current-compensated reference voltage that is proportional to converter output current. The current-compensated reference voltage is added to a regulation feedback controller reference voltage, which in turn... Agent:

20150029763 - Controller for generating jitters in a quasi resonant mode and method for generating jitters in a quasi resonant mode: A controller for generating jitters in a quasi resonant mode includes a feedback pin, a voltage generation unit, a pulse generator, and a comparator. The feedback pin is used for receiving a feedback voltage from a secondary side of a power converter. The voltage generation unit is used for generating... Agent:

20150029764 - Transformer-less unified power flow controller: A power control device includes a first terminal, a second terminal connected to a transmission line, a first cascade multilevel inverter (CMI) and a second CMI. The first CMI is connected to the second terminal. The second CMI connected in series between the first terminal and the second terminal.... Agent: Board Of Trustees Of Michigan State University

20150029765 - High frequency 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 using a silicon carbide transistor that outputs power having a carrier frequency, modulated by a fundamental frequency, and a set of harmonic... Agent: Ctm Magnetics, Inc.

20150029766 - Electromagnetic compatibility filter with an integrated power line communication interface: An embodiment of the present invention is directed to an integrated electromagnetic compatibility (EMC) filter and power line communication (PLC) interface. The EMC filter and PLC interface comprises a first filter winding and a second filter winding configured as a common mode choke; and a two-part winding on the common... Agent:

20150029767 - Power controllers with ultra-high-voltage startup: A power controller in a multi-chip module is disclosed. The power controller comprises a power controller die, an ultra-high voltage startup die, and a multi-chip module. The power controller die is operable to control a power switch when powered by an operation power source. The operation power source has a... Agent:

20150029768 - Non-isolated ac to dc power device: An AC to DC power supply is provided based on feedback control of an analog current blocking (ACB) device. The ACB element receives rectified high voltage AC. The output of the ACB element is provided to an integrating circuit that provides an output DC voltage. The output DC voltage depends... Agent:

20150029769 - Systems, circuits, devices, and methods with bidirectional bipolar transistors: Methods, systems, circuits, and devices for power-packet-switching power converters using bidirectional bipolar transistors (BTRANs) for switching. Four-terminal three-layer BTRANs provide substantially identical operation in either direction with forward voltages of less than a diode drop. BTRANs are fully symmetric merged double-base bidirectional bipolar opposite-faced devices which operate under conditions of... Agent: Ideal Power, Inc.

20150029770 - Method and apparatus for automatically equalizing bus bar voltages of power factor correction pfc circuit: An automatic equalization method and apparatus for bus bar voltages of a Power Factor Correction (PFC) circuit. The method includes calculating a difference in voltages of a positive bus bar and a negative bus bar, and increasing the rotation speed of a fan in the PFC circuit according to the... Agent: Emerson Network Power Co., Ltd.

20150029771 - Rectifier circuit with current injection: The present invention relates to a rectifier circuit with a three-phase rectifier arrangement (1) of semiconductor valves (2), preferably a bridge rectifier circuit of diodes, wherein the rectifier arrangement (1) comprises a three-phase mains input (3) and a DC output (4), and at least one of the three phases (U,... Agent: Schneider Electric Power Drives Gmbh

20150029772 - Power supply device and method of operating device: A power supply device of the invention includes a first switching leg including first and second switching elements between DC terminals; a second switching leg including third and fourth switching elements between the DC terminals; a first capacitor leg including first and second capacitors between the DC terminals; a second... Agent:

01/22/2015 > 23 patent applications in 18 patent subcategories.

20150023062 - Switching power supply device: In a switching power supply device having low loss in synchronous rectifying switches, exhibiting high power efficiency, and not causing troubles by reverse current in the switches. A secondary control circuit includes a reference voltage circuit to generate a reference voltage having a predetermined potential, and an ON-timing detector circuit... Agent: Mitsumi Electric Co., Ltd.

20150023063 - Resonant power converters using impedance control networks and related techniques: An impedance control resonant power converter (converter) operated at a fixed switching frequency includes an impedance control network (ICN) coupled between two or more inverters operated at a fixed duty ratio with a phase shift between them and one or more rectifiers. The phase shift is used to control output... Agent: Massachusetts Institute Of Technology

20150023064 - Method of forming a power supply controller and structure therefor: In one embodiment, a method of forming a power supply controller includes forming the power supply controller to receive an input signal that is representative of an ac signal, and forming the power supply controller to form an average value of an output current over a period of a drive... Agent: Semiconductor Components Industries, LLC

20150023065 - Voltage generating apparatus and image forming apparatus including the same: Until an output voltage of a converter reaches a threshold value, a control part performs switching control, and after the output voltage reaches the threshold value, the control part performs supply voltage control while the state of a switching control signal at the time when the output voltage reaches the... Agent:

20150023066 - Control device of a switching power supply: A control section for a current resonant converter section controls a DC output voltage of a current resonant converter section to settle to a target voltage by varying a resonant period between predetermined two resonant periods based on an error signal between the DC output voltage and the target voltage.... Agent: Fuji Electric Co., Ltd.

20150023067 - Power-factor correction circuit: The present invention includes: a series circuit including a reactor and a switching element connected between the rectified-current output terminals of a rectifier; a series circuit including a diode and a smoothing capacitor for obtaining an output voltage, connected in parallel to the switching element; an error amplifier configured to... Agent:

20150023068 - Switching power supply apparatus: A switching power supply apparatus includes a voltage step-up converter that increases input voltage in response to turning on and off of a switching element, a transformer including a primary winding and a secondary winding and the primary winding of which is connected to the output of the voltage step-up... Agent:

20150023069 - Systems and methods for high precision and/or low loss regulation of output currents of power conversion systems: Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a current of a power conversion system includes a first operational amplifier, a second operational amplifier, a first transistor, a second transistor, a current mirror component, a... Agent: On-bright Electronics (shanghai) Co., Ltd.

20150023070 - Ac/dc converter: A first rectified voltage obtained by rectifying an AC voltage is input to an input detection terminal of a control circuit. A first NMOS transistor configured as a depletion-type high-voltage element, and its drain is connected to the input detection terminal, and its gate is connected to its source. An... Agent:

20150023071 - Voltage converter circuit and voltage converter controller and parameter setting method therefor: A voltage converter circuit includes a voltage converter controller which generates a PWM signal to operate a power switch for voltage conversion. The voltage converter controller includes a sensing pin for sensing a current and the voltage converter controller receives a power supply. A parameter setting method for the voltage... Agent: Richtek Technology Corporation

20150023072 - Start-up circuit and method for ac-dc converters: For starting-up a power converter, an AC rectified voltage is generated upon power-up of the power converter. A depletion mode transistor generates a first voltage from the rectified voltage. The first voltage is inputted to a controller of the power converter to provide power for operation of the controller before... Agent:

20150023073 - Power control device and image forming apparatus including the same: A power control device and an image forming apparatus including the same are disclosed. A power control device meets the need for low power consumption by minimizing standby power consumption in a plug-on state of an electronic apparatus, and meets the safety requirements by increasing a discharging rate of an... Agent: Samsung Electronics Co., Ltd.

20150023074 - Ac/dc electrical conversion device permitting energy recovery and management of dc-side short-circuits: An AC/DC electrical converter device having a source mode and a recovery mode, and for connection, on the AC side, to an AC voltage source and, on the DC side, to a DC power distribution network. It includes an AC/DC converter, a switching cell with two switches (K1, K2) that... Agent: Alstom Technology Ltd.

20150023075 - Inverter control apparatus and control method thereof: An apparatus and method for controlling an operation of an inverter are provided. In the inverter control apparatus, an operation signal input unit detects a current of each phase output from an inverter. An error detecting unit detects whether there is a fault of the inverter on the basis of... Agent: Lsis Co., Ltd.

20150023076 - Power converter control device: A power converter control device includes an alarm signal generation circuit which detects information necessary for a protection operation of a semiconductor element configuring a power converter, and generates and externally outputs an alarm signal with a pulse width responding to a protection factor; a temperature signal generation circuit which... Agent:

20150023077 - Interleaved two-stage power factor correction system: Methods and systems are described for providing power factor correction for high-power loads using two interleaved power factor correction stages. Each power factor correction stage includes a controllable switch that is operated to control the phasing of each power factor correction stage. The phasing of output current from the second... Agent: Regal Beloit America, Inc.

20150023078 - Power dimmer: A control circuit varies the power of a load powered by an alternating voltage, comprising: a first thyristor and a first diode connected in antiparallel between first and second nodes, the cathode of the first diode being on the side of the first node; a second thyristor and a second... Agent:

20150023079 - Power supply device: In a power supply device, the bridge circuit including a plurality of switching arms which is an inverse-parallel circuit of a semiconductor switch and a diode. The power supply device includes a control unit. The control unit switches the semiconductor switch such that a voltage v between AC terminals becomes... Agent: Fuji Electric Co., Ltd.

20150023080 - Methods and apparatus for controlling power switches via a digital communication bus: Methods and apparatus are provided that can be used to control a set of power switches operating as a power converter. The method comprises providing a set of power switches and at least one switch driver, each power switch being operable to connect and disconnect one of a set of... Agent: American Power Conversion Corporation

20150023081 - Power semiconductor module and power conversion device: A power semiconductor module capable of reducing variation of inductance between upper/lower arms and reducing variation of current caused by the variation of inductance. The power semiconductor module includes circuit blocks (upper/lower arms) each of which is configured by connecting self-arc-extinguishing type semiconductor elements in series; a positive electrode terminal,... Agent: Mitsubishi Electric Corporation

20150023082 - Semiconductor device and power conversion device using the same: In a semiconductor device such as a three-phase one-chip gate driver IC, HVNMOSs configuring two set and reset level shift circuits are disposed on non-opposed surfaces, and it is thereby possible to reduce the amount of electrons flowing into drains of HVNMOSs of another phase due to a negative voltage... Agent:

20150023083 - Power converter: In a filter capacitor including three capacitor elements including a first capacitor element at an end on one side in an electrical connection form and a second capacitor element at an end on the other side, a pair of direct-current terminals including a positive-electrode-side main terminal and a negative-electrode-side main... Agent: Mitsubishi Electric Corporation

20150023084 - Semiconductor module: A semiconductor module includes a plurality of power semiconductor elements forming upper arms and lower arms of a plurality of sets of half bridge circuits; a plurality of control circuits on/off driving each power semiconductor element having a control terminal of the plurality of power semiconductor elements; and a power... Agent:

01/15/2015 > 22 patent applications in 18 patent subcategories.

20150016150 - Multi-phase converter: Disclosed is a multi-phase converter comprising a plurality of electric phases, each of which can be triggered by a switching means. At least one coupling means (100 to 106) is provided for coupling a phase to another phase, each phase having two windings.... Agent:

20150016151 - Bjt drive scheme: The invention generally relates to switch mode power converters (SMPCs). and methods for providing supplementary base drive to a bipolar transistor of an SMPC, and more particularly to a switching control circuit for a SMPC, a said SMPC having an inductive component coupled to receive power from an input to... Agent:

20150016152 - Power supply apparatus and image forming apparatus: The power supply apparatus includes a transformer; a switching unit that causes two switching elements connected in series to drive the primary winding of the transformer; a detection unit that detects current flowing on the primary side of the transformer; a correction unit that corrects a detection result of the... Agent:

20150016153 - Pulse mode active clamping: An active clamp circuit includes a clamp capacitance and a clamp switch coupled in a circuit path, and a diode coupled across the clamp switch.... Agent:

20150016154 - Peak sample circuit for ac voltage and method thereof: A peak sample circuit for AC voltage, including: a rectifier coupled to receive an AC voltage and to rectify the AC voltage to generate a rectified signal; a delay circuit coupled to receive the rectified signal and to delay the rectified signal to generate a delayed rectified signal; a comparison... Agent:

20150016155 - Power supply apparatus: A power conversion circuit connected to a three phase alternating current line is controlled in a PWM system. To control an arm corresponding to each phase, first to third carrier wave signals are generated. The first to third carrier wave signals include two signals having phases, respectively, offset by 180... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20150016156 - Composite ac-to-dc power converter with boosting capabilities: A boosting AC-to-DC converter may include a main rectifier, first and second auxiliary rectifiers, and an autotransformer. The autotransformer may include a plurality of winding assemblies each having a primary terminal connected to an AC power source, a main secondary terminal connected to the main rectifier, a first auxiliary secondary... Agent:

20150016157 - Constant switching frequency discontinuous current mode average output current control scheme: The constant switching frequency discontinuous current mode average output current control scheme is composed of a reference block, reference calculation block, state detecting block, error detector block, zero state detector, power driver block and internal clock. The reference block generates preset reference; The reference calculation block, based on the power... Agent:

20150016158 - Method for providing low voltage dc power from ac mains power: According to one aspect, embodiments of the invention provide a power supply system comprising an input line configured to receive input AC power, a first capacitor coupled to the input line, a second capacitor, a controller, a rectifier having an input coupled to the first capacitor and an output coupled... Agent: Schneider Electric It Corporation

20150016159 - Multiphase power converter circuit and method: A multiphase power converter circuit includes at least two single phase power converter circuits. Each single phase power converter circuit includes at least one converter series circuit with a number of converter units. The converter series circuit is configured to output a series circuit output current. A synchronization circuit is... Agent:

20150016160 - Power converter: A power converter includes inverters, AC sides of the inverters being connected in parallel, and a controller configured to control total output power of the inverters by controlling output power of at least one of the inverters in a control cycle shorter than a shortest communication cycle which allows communication... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20150016161 - Power converter: A power converter includes inverters, AC sides of the inverters being connected in parallel, a power command value determiner configured to determine a first power command value and a second power command value, the first power command value being lower than a proportional division power value obtained by proportionally dividing... Agent: Toshiba Mitsubishi-electric Industrial Systems Corporation

20150016162 - Photovoltaic inverter with swinging line filter inductors: The invention is a high efficiency single-phase or poly-phase DC-to-AC power converter apparatus and power conversion method which includes a line filter inductor or line filter inductors to integrate or filter pulse modulated waveforms into substantially sinusoidal waveforms wherein (i) the line filter inductor or inductors have inductance values that... Agent: Renewable Power Conversion, Inc.

20150016163 - Detector and a voltage converter: A detector for detecting an occurrence of a current strength of interest of a current of a signal to be sensed includes a magnetoresistive structure and a detection unit. The magnetoresistive structure varies a resistance depending on a magnetic field caused by the current of the signal to be sensed.... Agent: Infineon Technologies Austria Ag

20150016164 - High-voltage power supply apparatus and image forming apparatus: The high-voltage power supply apparatus includes an inductor to be applied with a voltage when a driving unit is driven by a drive signal at a predetermined frequency, a rectification unit connected to both ends of the inductor, the rectification unit including multiple capacitors and multiple diodes, a current detection... Agent:

20150016165 - Gated thyristor power device: An improved gated thyristor that utilizes less silicon area than IGBT, BIPOLARs or MOSFETs sized for the same application is provided. Embodiments of the inventive thyristor have a lower gate charge, and a lower forward drop for a given current density. Embodiments of the thyristor once triggered have a latch... Agent:

20150016166 - Line current reference generator: The invention generally relates to the field of power factor correction and specifically to generation of a reference waveform which is proportional to line voltage and is controllable in amplitude.... Agent:

20150016167 - Multilevel converter: A multilevel converter for performing a DC to AC or an AC to DC voltage conversion as provided. The multilevel converter has a first DC terminal and a second DC terminal, a first converter arm and a second converter arm, wherein each converter arm comprises at least one converter cell,... Agent:

20150016168 - Highly stable maximum power point tracking for bipolar photovoltaic inverters: The invention is a method of tracking the overall maximum power point of a grounded bipolar photovoltaic array by tracking and regulating the voltage of the weaker of the two monopolar subarrays at any instant in time. The transfer between subarrays being tracked for the maximum power point is seamless... Agent: Renewable Power Conversion, Inc.

20150016170 - Method for controlling a multiphase converter: A method for controlling a polyphase inverter that includes a number of half bridges connected into an intermediate voltage circuit and center taps between switching elements. By cyclically switching the switching elements, the respective center taps of the half bridges are connected to an upper intermediate circuit rail or to... Agent: Diehl Ako Stiftung & Co. Kg

20150016169 - Multilevel inverters and their components: A multilevel inverter includes a first half bridge in series with a second half bridge, each comprising a switch having a channel. The switch is configured to block a substantial voltage in a first direction during a first mode of operation, to conduct substantial current through the channel in the... Agent:

20150016171 - Traction converter and railway vehicle: The present invention equalizes the temperatures of semiconductor elements and efficiently cools the semiconductor elements in a lightweight device configuration, by optimally combining the configurations of heat radiation fins in accordance with the configuration of the semiconductor elements. A traction converter includes plural semiconductor elements included in a traction converting... Agent:

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