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Electric power conversion systems

20130121029 - Connecting an inverter in a solar power plant with shifted potential center point: The invention relates to a process of connecting an AC output of a transformerless inverter of a solar power plant to an internal AC power grid at an input side of a galvanic isolation, while an offset voltage for shifting a potential center point of a photovoltaic generator connected to... Agent: Sma Solar Technology Ag

20130121030 - Apparatus and method for soft switching in a medium volatage to low voltage converter: A switching and control arrangement are provided along with a transformer arrangement such that semiconductor-based switches can be used in a medium DC voltage to AC inverter in a medium voltage to low voltage DC to DC converter. The switching arrangement on the secondary side of the transformer arrangement controls... Agent: Gridco, Inc.

20130121031 - Management of common mode noise frequencies in portable electronic devices: The disclosed embodiments provide a system that facilitates the use of a portable electronic device. During operation, the system detects a coupling of a power supply to the portable electronic device through a set of wires. Next, the system uses the set of wires to identify a type of the... Agent: Apple Inc.

20130121032 - Power supply regulation for ultra-low load and no-load operation: A controller of a switching power converter employs a dynamically adaptive power supply regulation approach that improves low-load and no-load regulation to achieve ultra-low standby power in a switching power converter. Under ultra-low load conditions when a deep-deep pulse width modulation (DDPWM) is applied, the controller decreases the actual on-time... Agent: Iwatt Inc.

20130121034 - Dc-dc converter: A DC-DC converter is configured with a voltage-source power converter at a primary side of a transformer, a current-source power converter at a secondary side of the transformer, and a controller. First and second voltage detection circuits respectively detect first and second voltages of the voltage-source and the current-source power... Agent: Tdk Corporation

20130121033 - Dc-dc converter circuit using llc circuit in the region of voltage gain above unity: The present invention provides a series of DC-DC converter circuit designs, and DC-DC converters based on such circuit design, that provide high input-to-output voltage conversion. The converters include a resonant tank and a means for interrupting the tank current to produce a near zero-loss “hold” state wherein zero current and/or... Agent:

20130121035 - Ultra low standby consumption in a high power power converter: A power converter includes a dc input having first and second terminals. A main converter is coupled to the first terminal of the dc input. A standby circuit coupled to the second terminal of the dc input and the main converter. The main converter is coupled to control a transfer... Agent: Power Integrations, Inc.

20130121036 - Resonant converting circuit and resonant controller: The resonant converting circuit comprises a resonant circuit, a current detecting circuit and the resonant controller. The resonant controller controls a power conversion of the resonant circuit for converting an input voltage into an output voltage and the resonant controller comprises an over current judgment unit and an over current... Agent: Green Solution Technology Co., Ltd.

20130121037 - Resonant converting circuit and resonant controller: A current detecting circuit detects a resonant current in a primary side of a resonant converting circuit to generate a current detecting signal. An output detecting circuit generates a feedback signal according to the output voltage. A resonant controller generates a clock signal and adjusts an operating frequency of the... Agent: Green Solution Technology Co., Ltd.

20130121038 - Converter, method for controlling the same, and inverter: Disclosed herein are a converter, a method for controlling the same, and an inverter. The converter includes: an input terminal having power input thereto; a first converter unit converting the power input to the input terminal to thereby output the converted power to an output terminal; and a second converter... Agent: Samsung Electro-mechanics Co., Ltd./sungkyunkwan University Foundation For Corporate Collaboration

20130121040 - Method and apparatus to regulate an output voltage of a power converter at light/no load conditions: An example controller for a primary side control power converter includes a feedback circuit, a driver circuit, and an adjustable voltage reference circuit. The feedback circuit compares a feedback signal representative of a bias winding voltage of the power converter with a voltage reference. The driver circuit outputs a switching... Agent: Power Integrations, Inc.

20130121039 - Switching amplifier with pulsed current supply: A switching amplifying method or a switching amplifier for obtaining one or more than one linearly amplified replicas of an input signal, is highly efficient, and does not have the disadvantage of “dead time” problem related to the class D amplifiers. Said switching amplifying method comprises the steps of: receiving... Agent:

20130121042 - Cascaded h-bridge medium voltage drive, power cell and bypass module thereof: The present application relates to a cascaded H-Bridge medium voltage drive, a power cell, and a bypass module thereof, wherein the bypass module is configured for bypassing a major circuit module of the power cell, while the major circuit module comprises a fuse, a rectifier, a bus capacitor and an... Agent: Delta Electronics (shanghai) Co., Ltd

20130121041 - Power converter based on h-bridges: A power converter includes an active front end (AFE) that is coupled by a dc link stage to a plurality of H-bridge inverters. One or more multi-phase electro-magnetic energy conversion devices, such as transformers or electric machines, with open windings that are connected to only the AFE or only the... Agent: General Electric Company

20130121043 - Harmonic cancelling interphase magnetic device: A harmonic cancelling interphase magnetic device (1) comprising a magnetic core of rectangular shape with three wound legs (14) and two non-wound legs (12), wherein the cross-section of said non-wound legs (12) is thinner than the cross-section of said wound legs (14). The magnetic device is designed for a front... Agent: Schaffner Emv Ag

20130121044 - Power converter controller ic having pins with multiple functions: A controller integrated circuit (IC) for controlling a power converter uses one or more IC pins having plurality of functions such as configuration of a parameter supported by the controller IC and shutdown protection. Several different functions may be supported by a single IC pin, thereby reducing the number of... Agent: Iwatt Inc.

20130121045 - Power conversion apparatus: An inverter circuit is connected in series to an AC power supply, and at the subsequent stage, a smoothing capacitor is connected via a converter circuit including semiconductor switching devices. A control circuit controls the converter circuit by providing a short-circuit period for bypassing the smoothing capacitor in each cycle,... Agent: Mitsubishi Electric Corporation

20130121046 - Phase locking system for three-phase alternating current electric grid and method thereof: A phase locking system for a three-phase alternating current (AC) electric grid and a method thereof are disclosed. The method includes: receiving a three-phase voltage of the AC electric grid and converting the three-phase voltage to a two-phase voltage signal, each of which including a positive and a negative sequence... Agent: Delta Electronics (shanghai) Co., Ltd.

20130121047 - Active power factor correction circuit and related pfc controller: An active power factor correction (PFC) circuit for calibrating a power factor of an AC-to-DC converter when the active PFC circuit is coupled with the AC-to-DC converter is disclosed including: a piecewise linear gain circuit, an error amplifier, a PWM controller, and a PWM signal generator. The piecewise linear gain... Agent: Richtek Technology Corporation

20130121049 - Emi frequency spreading method for switching power converter: A controller of a switching power converter sets an actual turn-on time of a switch in the switching power converter in each switching cycle by selecting one of a plurality of valley points of the output voltage of the switching power converter occurring subsequent to the desired turn-on time of... Agent: Iwatt Inc.

20130121048 - Wide input voltage range power supply circuit: A wide input voltage power supply circuit for a load includes a first regulation stage and a second regulation stage. The first regulation stage includes a linear regulator circuit configured to maintain a bus voltage within a predefined voltage range when an input voltage exceeds a predefined input level. A... Agent:

20130121050 - Integrated magnetic device for low harmonics three-phase front-end: An integrated magnetic for a low harmonics three-phase bidirectional front-end and also for AC/DC and DC/AC power converters. Its use enables reduction of the harmonics of the currents absorbed or injected to three-phase power line by using only one device which integrates a splitter and an inductor function. Compared to... Agent: Schaffner Emv Ag

20130121051 - Dc pre-charge circuit: Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage... Agent: Rockwell Automation Technologies, Inc.

20130121052 - Electric power converter having plurality of semiconductor modules arrayed in successive layers: In an electric power converter, a stacked-layer unit has a plurality of semiconductor modules arrayed as layers along a stacking direction, each semiconductor module containing a semiconductor element and a pair of power terminals protruding outward in a protrusion direction at right angles to the stacking direction, each pair consisting... Agent: Denso Corporation

20130114302 - Method and apparatus for detecting islanding conditions of a distributed grid: An exemplary method and apparatus for detecting islanding conditions of a distributed grid are disclosed, wherein transfer of power through a power electrical unit is controlled on the basis of a control reference. The apparatus includes a first stage and a second stage performing a respective portion of the method.... Agent: Abb Research Ltd

20130114303 - Photovoltaic array systems, methods, and devices with bidirectional converter: Devices, systems and methods for operating, monitoring and diagnosing photovoltaic arrays used for solar energy collection. The system preferably includes capabilities for monitoring or diagnosing an array, under some circumstances, by using a bidirectional power converter not only to convert the DC output of the array to output power under... Agent: Ideal Power Converters, Inc.

20130114304 - Apparatus and method for power extraction from high impedance sources: A system and method for extracting power from a power source having a high internal resistance are presented. A capacitor is connected to the power source. A switch is configured to selectively connect and disconnect the capacitor from a load. A processor is configured to monitor an energy flow from... Agent:

20130114305 - Power source circuit: In a power source circuit including a switching circuit 8 as a power conversion circuit for converting by a switching operation at least one of a frequency and a voltage of an alternating voltage from an alternating power source 2 via a pair of supply lines 3 and 4, one... Agent: Canon Kabushiki Kaisha

20130114306 - Dynamic power factor correction and dynamic control for converter in power supply: A welding or cutting system is provided using an interleaved buck-boost stage which dynamically controls power factor correction and operation of the interleaved buck-boost modules to optimize efficiency and operation of the welding system.... Agent: Lincoln Global, Inc.

20130114308 - Switching regulator and control circuit and control method thereof: The present invention discloses a switching regulator and a control circuit and a control method thereof. The control circuit of the switching regulator, which controls rectified power within a predetermined range, detects an input voltage and an input current to generate a voltage detection signal and a current detection signal... Agent: Richtek Technology Corporation

20130114307 - Systems and methods for protecting power conversion systems under open and/or short circuit conditions: System and method are provided for protecting a power converter. The system includes a first comparator, and an off-time component. The first comparator is configured to receive a sensing signal and a first threshold signal and generate a first comparison signal based on at least information associated with the sensing... Agent: On-bright Electronics (shanghai) Co., Ltd.

20130114309 - Battery module: A battery module and an arrangement including a number of battery modules connected in series are disclosed. An energy store has a positive and a negative connection. A boost converter has a first and a second converter output. The energy store is connected at the positive connection of the energy... Agent: Infineon Technologies Ag

20130114310 - Power supply control circuit and method for sensing voltage in the power supply control circuit: The present invention discloses a power supply control circuit, the power supply providing an output voltage to an output terminal from an input terminal through a transformer having a primary winding and a secondary winding, the power supply control circuit comprising: a power switch electrically connected with the primary winding;... Agent: Richtek Technology Corporation

20130114311 - Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy... Agent: Ideal Power Converters, Inc.

20130114312 - System and method for power conversion for renewable energy sources: An energy conversion system for use with an alternative energy source is disclosed. The alternative energy source can generate either an AC or a DC voltage. A first power converter is connected between the source and a DC bus, and a second power converter is connected between the DC bus... Agent: Zbb Energy Corporation

20130114313 - Switching mode power supply, apparatus and method of supplying power by using the same, and image forming apparatus therefor: A switching mode power supply (SMPS) usable with an image forming apparatus receives an alternating current (AC) power from an external electric power supply source and outputs a direct current (DC) power. When a supply state of an electric power to the image forming apparatus is turned off, electric charges... Agent: Samsung Electronics Co., Ltd

20130114314 - Converter system and power electronic system comprising such converter systems: Exemplary embodiments are directed to a converter system having a phase voltage source, n partial converter systems, wherein n≧1 and, when n=1, the partial converter system is connected to the phase voltage source at a connection point and, when n>1, the partial converter systems are connected to the phase voltage... Agent: Abb Technology Ag

20130114315 - Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy... Agent: Ideal Power Converters, Inc.

20130114316 - Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance: The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy... Agent: Ideal Power Converters, Inc.

20130114320 - Device for balancing the voltage on the terminals of a capacitor of a set of capacitors, and voltage conversion system including such a balancing device: Device for balancing voltage on terminals of at least one capacitor of a set of N−1 capacitors connected in series between a positive terminal and a negative input terminal and connected through intermediate points, comprising at least one balancing module connected between both input terminals; each balancing module including means... Agent: Ge Energy Power Conversion Technology Ltd.

20130114319 - Reactor: A reactor having a good heat dissipation effect is provided. The reactor includes one coil formed by winding a wire, a magnetic core arranged inside and outside the coil and forming a closed magnetic circuit, and a case for housing an assembly of the coil and the magnetic core. An... Agent: Sumitomo Electric Industries, Ltd.

20130114318 - Solid-state inductive converter: A converter configured to transform DC into AC. Includes a first and second transistor with connected bases and emitters, and a coil or inductor having a first end that is connected to the bases, a second end that is free, and a common central zero, which is connected to the... Agent:

20130114317 - Voltage converting apparatus and method for converting a voltage: A voltage converting apparatus includes a series connection of at least four switching elements each including at least one semiconductor device of turn-off type and a free-wheeling diode connected in anti-parallel therewith. The apparatus has a device configured to measure a parameter representative of the voltage across each free-wheeling diode... Agent: Abb Technology Ag

20130114321 - Inverter topology circuit, inversion method and inverter: An inversion method and an inverter, in which a fifth switch tube, a sixth switch tube, a fifth diode, a sixth diode, and a first capacitor are added in the existing inverter circuit including a bridge arm, the fifth switch tube is connected in parallel to the fifth diode, and... Agent: Huawei Technologies Co., Ltd.

20130107578 - Power adapter: A power adapter includes a processing circuit converting mains power to another alternating current (AC) power or a direct current (DC) power, a first output outputting the converted AC or DC power, a sense resistor connected between the processing circuit and the first output for sampling current flowing through the... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd.

20130107580 - Reactor, and coil component: Provided are a coil component capable of contributing to improving productivity of a reactor, and a reactor exhibiting good productivity. A reactor 1A includes one coil 2 formed by spirally winding a wire 2w, and a magnetic core 3, which is disposed inside and outside the coil 2 and which... Agent: Sumitomo Electric Industries, Ltd.

20130107579 - Switching power supply apparatus: A switching power supply apparatus includes a low-side switching control unit and a high-side switching control unit. The low-side switching control unit includes a low-side turn-off circuit that turns off a low-side switching element behind a delay time when reversal of the polarity of a winding voltage of a transformer... Agent: Murata Manufacturing Co., Ltd.

20130107581 - Voltage converter: A voltage converter (1a . . . 1g), in particular a resonant converter for converting an input AC or DC voltage (UE) into an output DC voltage (UA). On the secondary side, a first secondary capacitor (CS1) is arranged between the secondary partial windings (WS1, WS2) of a transformer (TR1);... Agent: Brusa Elektronik Ag

20130107582 - Dc to dc convertor: A DC to DC converter can include a reverse-blocking semiconductor switch that makes a synchronously rectifying MOSFET become parallel-connected with a capacitor that is connected to a power supply of a controller IC for a conventionally used synchronously rectifying circuit. The reverse-blocking semiconductor switch can be driven either by signals... Agent: Fuji Electric Co., Ltd.

20130107584 - Dynamic mosfet gate drivers: The embodiments herein describe a dynamic metal-oxide-semiconductor field-effect transistor (MOSFET) gate driver system architecture and control scheme. The MOSFET gate driver system dynamically adjusts both the gate driver turn-on-resistance and the gate driver turn-off resistance within a single (i.e., one) switching cycle to reduce electromagnetic interference (EMI) in the system... Agent: Iwatt, Inc.

20130107583 - Low forward voltage rectifier: A Low Forward Voltage Rectifier (LFVR) includes a bipolar transistor, a parallel diode, and a base current injection circuit disposed in an easy-to-employ two-terminal package. In one example, the transistor is a Reverse Bipolar Junction Transistor (RBJT), the diode is a distributed diode, and the base current injection circuit is... Agent: Ixys Corporation

20130107585 - Power converter system with synchronous rectifier output stage and reduced no-load power consumption: A power converter circuit may convert alternating current signals into direct current signals. A load may be powered from output terminals that are provided with the direct current signals. The power converter circuit may have a transformer with primary and secondary sides. A transistor on the primary side may be... Agent:

20130107586 - System for improved wind turbine generator performance: A system for improving wind turbine generator performance is disclosed. In one aspect a rotary power generation system is provided, including: a rotary power generator for generating variable-frequency alternating currents; a negative sequence current regulator that determines and uses frequency-dependent D-axis and Q-axis negative sequence gains based on an electrical... Agent: General Electric Company

20130107587 - Photovoltaic array emulators: Photovoltaic (PV) array emulators and methods are described. In one example, a method for use in testing a PV inverter includes coupling a first PV inverter to an alternating current (AC) power source. A second PV inverter is coupled to receive an output of the first PV inverter. The first... Agent:

20130107588 - Series-connected multi-level power conversion device: A series-connected multi-level power conversion device according to an aspect of embodiments includes a multi-winding transformer and a power conversion unit. The multi-winding transformer has a relationship that n secondary windings respectively connected to n single-phase power converters in the same output phase have a voltage phase difference of 60/n... Agent: Kabushiki Kaisha Yaskawa Denki

20130107589 - Power conversion device: A power conversion device according to an aspect of an embodiment includes a power conversion unit and a control unit. The power conversion unit includes N (N is an integer number not less than two) power converters that output voltages on the basis of base signals having the same period... Agent: Kabushiki Kaisha Yaskawa Denki

20130107590 - Solid state pulsed power generator: A power generator includes one or more full bridge inverter modules coupled to a semiconductor opening switch (SOS) through an inductive resonant branch. Each module includes a plurality of switches that are switched in a fashion causing the one or more full bridge inverter modules to drive the semiconductor opening... Agent: General Electric Company

20130107591 - Power-factor-improving circuit and method for an offline converter: A power-factor-improving circuit and method for an offline converter block the DC component and obtain the AC component of an input voltage of the offline converter. The AC component is superpositioned onto a DC bias signal to generate a dimming signal for the offline converter to adjust an output current... Agent: Richtek Technology Corp.

20130107593 - Dc power supply with low power loss: A DC power supply (1) having a series regulator (2) for generating a fixed output DC voltage (VCC) at a variable input AC voltage (VAC) with low power loss. For this purpose, the DC power supply (1, 101, 201, 301) has a transformer (3, 103) having at least two auxiliary... Agent: Minebea Co., Ltd.

20130107592 - Reference voltage regulating method and circuit for constant current driver: The present invention relates to reference voltage regulating methods and circuits for a constant current driver. In one embodiment, a method can include: setting a reference voltage circuit matching with a current output channel of a constant current source; setting a first resistor of the reference voltage circuit to follow... Agent: Silergy Semiconductor Technology (hangzhou) Ltd

20130107594 - Methods and systems for operating a power conversion system: A power conversion system for providing power to an electrical grid is described. The system includes a power converter coupled to a direct current (DC) power source. The system also includes a contactor coupled to the power converter and the electrical grid and configured to selectively electrically couple the power... Agent:

20130107595 - Control of a switch in a power converter: A method for controlling at least one switch in a power converter, wherein the switching speed of the switch dynamically varies according to a measurement of a quantity representative of the efficiency of the converter.... Agent: Stmicroelectronics (tours) Sas

20130107596 - Power conditioner: A power conditioner that suppresses distortion in a waveform of a sinusoidal generated voltage includes a first and second group including two switches each connected in inverse parallel and in series. The power conditioner alternately turns on and off both switches in the first group at a prescribed chopping frequency... Agent: Omron Corporation

20130107597 - Power conditioner: A power conditioner that suppresses generation of voltage spikes in a part of a generated sinusoidal voltage waveform. An offset between the timing of chopping, which depends on whether the voltage difference between the voltage of a third pulse voltage series and a sinusoidal voltage is positive or negative, and... Agent: Omron Corporation

20130107599 - Current vector controlled deadtime for multilevel inverters: A multilevel inverter circuit includes an inverter control circuit that controls switching of main and neutral switches. The inverter control circuit receives current vector information indicating flow direction of an AC current output of the multilevel inverter circuit. The inverter control circuit eliminates dead time between switching of a neutral... Agent:

20130107600 - Semiconductor device, power converter and method for controlling the power converter: Disclosed is a semiconductor device which includes: a semiconductor element 200 including a first metal-insulator-semiconductor field-effect transistor 200a and a second metal-insulator-semiconductor field-effect transistor 200b which is connected in parallel with the first metal-insulator-semiconductor field-effect transistor; and a control section which controls the operation of the semiconductor element. The control... Agent: Panasonic Corporation

20130107598 - System and method for var injection at a distributed power generation source: A method to add locally generated real and reactive power to a power distribution grid including: generating or storing direct current (DC) power by distributed power source; converting the DC power to an alternating current (AC) power; calculating or measuring a power factor of the AC power provided from the... Agent: General Electric Company

20130107601 - System and method for operating an electric power converter: An electric power converter for a renewable power source includes at least one alternating current (AC) conduit coupled to an external AC power device and at least one direct current (DC) conduit coupled to an external DC power device. The converter also includes at least one immersion structure defining at... Agent:

20130100706 - Driver circuit for driving a load circuit: Driver circuits (1) for driving load circuits comprise transformer circuits (21) with primary side windings to be coupled to source circuits and with secondary side windings to be coupled to the load circuits. By providing the driver circuits (1) with determination circuits (22) for determining secondary side currents as functions... Agent: Koninklijke Philips Electronics, N.v.

20130100707 - Dc-dc converter: Provided is a vehicle which enables a highly-efficient DC-DC converter and a highly-efficient power supply to a load, regardless of a power supply amount of to the load. When the power supply amount to a load R1 is a predetermined value or more, a control means 5 implements a first... Agent: Hitachi, Ltd.

20130100708 - Power factor improvement circuit: A power factor improvement circuit includes a low frequency filter unit installed between two electrodes of an output terminal of a rectifier unit for adjusting voltage and current inputted to a PWM control IC in-phase, and first and second compensation circuits installed at a current compensation terminal and a voltage... Agent:

20130100709 - Magnetron power supply: A power supply for a magnetron has a high voltage converter, a microprocessor and a resistor. The high voltage converter comprises an integrated circuit oscillator, switching transistors, an inductance L1, a transformer and a rectifier. A voltage source supplies an augmented DC voltage to the converter. An operational amplifier, arranged... Agent:

20130100710 - Active surge protection in a power supply: A surge protection module is disclosed. An example surge protection module includes a first terminal coupled to a first output terminal of a rectifier of a power supply. A second terminal is coupled to a first input terminal of a switching converter of the power supply. A third terminal is... Agent: Power Integrations, Inc.

20130100712 - Power source device and image forming apparatus: A power source device that outputs a DC voltage includes a rectification unit configured to rectify an input pulse voltage, a voltage-current conversion unit disposed on a side where the pulse voltage is input into the rectification unit, a current-voltage conversion unit configured to convert a current from the voltage-current... Agent: Canon Kabushiki Kaisha

20130100711 - Switching circuit: A switching circuit (400) comprising an inductive component (406) including at least one winding; and a switch (404) is configured to transfer power from a voltage source (402) to the inductive component (406) in accordance with a switch control signal (412). The switching circuit (400) also comprises a controller (408)... Agent: Nxp B.v.

20130100713 - Switching power conversion circuit and power supply using same: A switching power conversion circuit having a two-stage power circuit topology and capable of performing power factor correction is disclosed. In a case that the electrical energy of the switching power conversion circuit needs not to be provided to the system circuit, for example the load and the electronic device... Agent: Delta Electronics (shanghai) Co., Ltd

20130100714 - Power controller with smooth transition to pulse skipping: A power converter control circuit includes a ramp signal circuit, a blanking circuit, and a pulse driver circuit. The ramp signal circuit provides a ramp signal in response to a power converter feedback signal and an enable signal. The blanking circuit provides a blanking signal in response to the ramp... Agent: Power Integrations, Inc.

20130100715 - Systems and methods for reducing electomagnetic interference using switching frequency jittering: System and method are provided for regulating a power converter. The system includes a signal processing component configured to receive a first input signal and a second input signal, process information associated with the first input signal and the second input signal, and output a drive signal to a switch... Agent: On-bright Electronics (shanghai) Co., Ltd.

20130100717 - Dc-ac power converting apparatus and solar power supplying apparatus including the same: There is provided a DC-AC power converting apparatus that does not employ a capacitor for removing a ripple in an input terminal by charging or supplementing power according to a difference in power levels between power output by a solar cell and system instantaneous power or employs a capacitor having... Agent: Samsung Electro-mechanics Co., Ltd.

20130100716 - High-power medium-voltage drive power cell: The present invention provides a high-power medium-voltage drive power cell, which comprises: a rectifier module for rectifying the three-phase AC input voltage to get a DC voltage; an IGBT (Insulated Gate Bipolar Transistor) inverter bridge connected to capacitors for converting the DC voltage into an AC voltage of which the... Agent: Delta Electronics (shanghai) Co., Ltd.

20130100718 - Power starting circuit: A power starting circuit used in a DC power supply circuit has a double-pole, double-throw switch electrically connected to a positive pole of a DC power supply and controls a conducting state of the circuit. A first capacitor provides a voltage signal for a first switch circuit and controls the... Agent: Chervon (hk) Limited

20130100719 - Circuit for controlling a power supply: A control circuit for controlling a power supply is revealed. The control circuit is used to generate a switching signal for switching the power supply. The control circuit has a detection terminal for detecting a status of the power supply. A first protection circuit is coupled to the detection terminal... Agent: Infinno Technology Corp.

20130100720 - Power converter systems and methods of operating a power converter system: A power converter system includes a converter, a DC link, an inverter, a damping circuit, and a control system. The converter includes an input to couple to a power generation unit and an output to provide a direct current (DC) DC power output. The DC link includes a capacitor coupled... Agent:

20130100721 - Inverter driving system: Provided is an efficient inverter driving method. A pulse with very short pulse width is supplied as a primary driving pulse of a transformer, and the secondary output voltage of the transformer caused by a transient phenomenon can be enlarged several times while keeping the power source voltage for input... Agent: