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| Number | Title | Issue Date |
| 8169804 | Three-phase buck-boost power factor correction circuit and controlling method thereof The configurations of a three-phase buck-boost power factor correction (PFC) circuit are provided. The circuit includes a first single-phase buck-boost PFC circuit receiving a first phase voltage and having a first and a second output terminals and a neutral-point f... | 05/01/2012 |
| 8154892 | Method for controlling electrical power Power output of a power generation system is controlled by measuring the output voltage of the system, dividing the measured voltage value into a target power value, then controlling the current provided by the generation system to the calculated value. In some embo... | 04/10/2012 |
| 8089788 | Switched capacitor voltage regulator having multiple conversion ratios In general, in one aspect, the disclosure describes a switched capacitor voltage regulator to generate a regulated output voltage based on varying input voltages. The regulator is capable of operating at one of a plurality of voltage conversion ratios and selection ... | 01/03/2012 |
| 8077490 | Limit-cycle oscillation (LCO) generation by altering a digital transfer function of a feedback loop element Limit-cycle oscillation (LCO) generation by altering a digital transfer function of a feedback loop element provides a controllable method and apparatus for generating LCOs within a switch-mode power supply (SMPS). Measurements of the LCO characteristics can then be... | 12/13/2011 |
| 8072784 | Electronic device and power supply unit thereof An exemplary electronic device includes a controller, a first convertor, a second convertor, and a switching unit. The first convertor is configured for receiving a first voltage from an external power supply and converting the first voltage into a second voltage. T... | 12/06/2011 |
| 8072785 | Switching power supply unit A switching power supply unit is provided, which may supply stable output while manufacturing cost is held down. In a smoothing circuit, a magnetic flux in a first circular magnetic path, a magnetic flux in a second circular magnetic path, a magnetic flux generated ... | 12/06/2011 |
| 8064232 | Power conversion device and power conversion system A power conversion device includes input terminals, first output terminals, second output terminals, and an insulation transformer. The insulation transformer includes a primary coil and a secondary coil of equal inductance. The polarity of one end of the primary co... | 11/22/2011 |
| 8050065 | Multi-phase voltage converting device, vehicle and control method of multi-phase voltage converting device A multi-phase voltage converting device includes voltage converters each performing voltage conversion based on a control period selected from among a plurality of predetermined control periods, and a control device indicating the control period to the voltage conve... | 11/01/2011 |
| 8040702 | DC/DC power converting apparatus Three or more circuits, in which series-connected low-voltage and high-voltage side switches including MOSFETs including parasitic diodes are connected across positive and negative terminals of each of smoothing capacitors, are connected in series. One of elementary... | 10/18/2011 |
| 8036007 | Bus connection for connecting a field device to a field bus A bus connection for connecting a field device to a field bus whereby the bus connection has a circuit for sending and receiving databus signals and for generating at least one regulated operating voltage, and the regulated operating voltage is generated from a bus ... | 10/11/2011 |
| 7983063 | Magnetic integrated circuit for multiphase interleaved flyback converter and controlling method thereof The configurations of an interleaved flyback converter and a controlling method thereof are provided. The proposed two-phase interleaved flyback converter includes a transformer including a first primary winding having a first terminal, a first secondary winding hav... | 07/19/2011 |
| 7944720 | Semiconductor integrated circuit, PWM signal output device, and power conversion control apparatus Provided is a control technique of a PWM conversion type power converter capable of compensating for a voltage error due to voltage drop mainly at a switching element and managing a switching time of a PWM signal at the same time, and capable of suppressing increase... | 05/17/2011 |
| 7940537 | Partial regeneration in a multi-level power inverter In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are configured to provide power to the load and to perform partial regenera... | 05/10/2011 |
| 7933132 | Synchronizing frequency and phase of multiple variable frequency power converters In an embodiment, a power converter system includes a plurality of variable frequency power converters and a plurality of synchronization circuits. Each variable frequency power converter has a switching frequency. Each synchronization circuit is associated with a r... | 04/26/2011 |
| 7929324 | Blade architecture array converter A direct current to pulse amplitude modulated (“PAM”) current converter, denominated a “PAMCC”, is connected to an individual source of direct current. Some embodiments provide a PAMCC for each direct current source in an array, for example multiple solar pa... | 04/19/2011 |
| 7924583 | Method and arrangement in connection with inverter A method and an arrangement for controlling an inverter provided with a voltage intermediate circuit, the inverter (1) comprising two or more sub-inverters (1A, 1B, 1C), each being connected with a specific cable to feed a common load ( | 04/12/2011 |
| 7889525 | System and method for phase dropping and adding A multi-phase voltage regulator comprises a plurality of current supplying stages, each current supplying stage configured to supply a local output current equaling at least a portion of a load current output from the multi-phase voltage regulator; and a plurality o... | 02/15/2011 |
| 7889524 | Integrated bi-directional converter for plug-in hybrid electric vehicles This invention relates to a power module for a plug-in hybrid electric vehicle including an integrated converter having a rectifier changing AC to DC, a DC/DC converter changing from a first voltage to a second voltage, and a battery storing electrical energy. The i... | 02/15/2011 |
| 7885088 | Method for controlling a multiphase interleaving converter and corresponding controller A method is provided for controlling a converter of the multiphase interleaving type. According to the method, there is detected when a change of the load applied to an output terminal of the converter occurs. All the phases of the converter are simultaneously turne... | 02/08/2011 |
| 7872885 | Power level balance of frequency converters connected in parallel A method and a parallel connection arrangement for equalizing the output powers of power converter units (INU11, INU12), in which power converter units is a semiconductor switch bridge controlled with pulse width modulation, and in which is a co... | 01/18/2011 |
| 7872886 | Quasi-parallel voltage regulator Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated... | 01/18/2011 |
| 7852643 | Cross current control for power converter system A system and method for controlling cross current in an interleaved power converter system having a plurality of converter threads coupled in parallel includes collecting a feedback current from each thread and obtaining a normal current and a differential mode curr... | 12/14/2010 |
| 7830685 | Method modular power supply for x-ray tubes and method thereof A power supply power supply (30) comprising a DC voltage supply, a control unit and a plurality of high voltage channels (33a-33d) is suggested. Each high voltage channel (33) includes an inverter (IKTV), a resonance circuit... | 11/09/2010 |
| 7782639 | Adaptively configured and autoranging power converter arrays Multi-cell DC-DC power converters are described. In an adaptive version the isolated regulating multi-cell converter adaptively configures the input cells in a series connection to share the input voltage and in a parallel configuration to share the input current. D... | 08/24/2010 |
| 7773395 | Uniform converter input voltage distribution power system A uniform converter input voltage distribution power system evenly controls the individual input voltages of DC-to-DC series-input parallel-output connected converters using a uniform input voltage distribution controller including a generator for generating respect... | 08/10/2010 |
| 7764527 | Switching power supply unit A switching power supply unit is provided, in which input terminals of an AC voltage can be made common to output terminals of an AC voltage. A first switching circuit is provided between a winding of a transformer and a main battery. A second switching circuit is p... | 07/27/2010 |
| 7733675 | PWN modulator in multi-phase converter A circuit for preventing inductor saturation during a step-up load transient in a multi-phase converter circuit where phases are turned ON sequentially by a shared clock signal with a fixed phase shift, each phase having high- and low-side switches series connected ... | 06/08/2010 |
| 7729142 | Control method for direct-current by means of a plurality of converters At least three power converters in a power distribution and power transmission system can be controlled as rectifiers or inverters and are connected together by a direct current network. A measuring direct current voltage and a measuring direct current are measured ... | 06/01/2010 |
| 7729143 | Power supply having an extending hold-up time controlling unit A hold-up time extension controlling device for a power supply, that has a power factor correction circuit, a hold-up time extension circuit, a hold-up time controlling circuit, a storage capacitor and a DC to DC converter. The hold-up time extension controlling dev... | 06/01/2010 |
| 7724552 | Power supply A power supply to be connected in parallel to one or more other power supplies so as to share with the other power supplies in supplying load current to a load is disclosed. The power supply includes a load current comparison part including a first input terminal an... | 05/25/2010 |
| 7719864 | Pulse amplitude modulated current converter A direct current to pulse amplitude modulated (“PAM”) current converter, denominated a “PAMCC”, is connected to an individual source of direct current. The PAMCC receives direct current and provides pulse amplitude modulated current at its output. The pulses... | 05/18/2010 |
| 7679943 | Uninterruptable power supply The present invention is an apparatus for providing an uninterruptible power supply for an electronic device. The apparatus includes an AC-to-DC power supply that receives an external AC voltage supply and outputs a DC voltage to the electronic device. The power sup... | 03/16/2010 |
| 7643319 | 7-level wye-connected H-bridge converter topology for powering a high-speed electric motor A 7-level wye-connected H-bridge converter that provides redundancy for continued operation when one bridge phase has failed and more particularly to a topology that includes multiple semiconductor H-bridges and a three-phase semiconductor mid-bridge. The converter ... | 01/05/2010 |
| 7639520 | Efficient power supply The present invention is a method and system for efficiently converting an alternating current (AC) supply to a direct current (DC) output. A power supply in accordance with the present invention may employ variable frequency constant on-time converters whereby swit... | 12/29/2009 |
| 7623363 | Resonant-type switching power supply device There is provided a switching power supply device having one half-wave rectifying circuit made up of switching elements complementarily turned on or off, a reactor, a current resonance capacitor, a transformer, and a rectifying diode and another half-wave rectifying... | 11/24/2009 |
| 7602624 | Current resonance type multi-phase DC/DC converting apparatus having a large capacity without restricting multi-phase In a current resonance type multi-phase DC/DC converting apparatus for combining, using an output capacitor, M converter output voltages produced by M current resonance type multi-phase DC/DC converters connected in parallel to each other to produce an output voltag... | 10/13/2009 |
| 7602625 | Systems and methods for separation of a front end rectifier power system Systems and methods of converting alternating current (AC) power into direct current (DC) power at an intermediate DC voltage are disclosed. Briefly described, one system embodiment comprises a separated front end rectifier system that provides intermediate voltage,... | 10/13/2009 |
| 7586767 | Limit-cycle oscillation (LCO) based switch-mode power supply (SMPS) response evaluation A limit-cycle oscillation (LCO) based switch-mode power supply (SMPS) response evaluation provides an effective mechanism for determining the characteristic response of an SMPS during normal operation of the SMPS. LCOs are induced in the SMPS loop by introducing a n... | 09/08/2009 |
| 7586765 | Switched current power converter with reduced power losses during low load conditions A switched current power converter includes an input power source, an output terminal, and a plurality of current stages. Each of the current stages includes a converter coupled to the input power source for providing a current and a switch circuit that selectively ... | 09/08/2009 |
| 7586766 | Plasma arc power supply and control method for same Energy loss due to driving a plurality of power supply units simultaneously in a low-current region is prevented, and a more stable load current is obtained. The generation of a load current in a small-current region from a pilot arc current is handled solely by the... | 09/08/2009 |
