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| Number | Title | Issue Date |
| 8189355 | Multiple output switching power source apparatus A multiple-output switching power source apparatus includes a control circuit to adjust a time for applying a DC voltage to a primary winding of a transformer by turning on/off a switching element Q1, a first rectifying-smoothing circuit for a first secondary... | 05/29/2012 |
| 8159844 | Full-wave rectifying device A full-wave rectifying device includes a first rectification module and a second rectification module. The first rectification module includes one or a plurality of first rectification units. The second rectification module includes one or a plurality of second rect... | 04/17/2012 |
| 8089789 | Method and system for managing uninterruptable power supply for harmonic reduction A method and system for managing a dual rectifier uninterruptable power supply, comprising activating each of said rectifiers to provide an output DC voltage, monitoring a level of operation of the uninterruptable power supply and deactivating a selected one of said... | 01/03/2012 |
| 7633779 | Method and apparatus for operating a light emitting diode with a dimmer A circuit includes an input and an output, and an electronic light generator drive portion that is coupled to the input and drives the output. In one configuration, the circuit includes a further portion that is coupled to the input and that tunes a resonance at the... | 12/15/2009 |
| 7630221 | Bridgeless PFC circuit for CRM and controlling method thereof The configurations of a bridgeless PFC circuit system and a controlling method thereof are provided. The proposed system includes a bridgeless PFC circuit having a first and a second input terminals, a first switch having a first terminal, a first inductor having a ... | 12/08/2009 |
| 7371963 | Photovoltaic power generation system An object of the present invention is to provide a photovoltaic power generation system which is capable of achieving system linkage of a plurality of solar cell strings having different output voltages to a commercial electric power system with ease, and which enab... | 05/13/2008 |
| 7372711 | Circuit and method for reducing voltage spikes due to magnetizing current imbalances and power converter employing the same For use in a power converter having parallel power trains, a circuit for, and method of, reducing voltage spikes due to magnetizing current imbalances in the power trains and a power converter incorporating the circuit or the method. In one embodiment, the circuit i... | 05/13/2008 |
| 7359224 | Digital implementation of power factor correction A circuit for providing power factor correction in accordance with an embodiment of the present application may include a boost converter circuit and a control circuit receiving as inputs a rectified AC input voltage from a rectifier, a signal proportional to curren... | 04/15/2008 |
| 7330365 | Synchronous commutation DC-DC converter A synchronous commutation DC-DC converter comprises a current detection transformer (51) for detecting currents (IQ1, IQ2) flowing through the primary circuit, first and second DC bias power sources (53, 54) generating bias voltag... | 02/12/2008 |
| 7330012 | High frequency bus system Certain exemplary embodiments can comprise a system comprising an electric drive system for a machine. The system can comprise a rectifier adapted to convert AC power from an alternator to DC power. The system can comprise an inverter adapted to receive DC power fro... | 02/12/2008 |
| 7323794 | Independent control of output current balance between paralleled power units An information handling system power supply system has a plurality of power supply units (PSUs) with outputs connected in parallel and a current balancing circuit for equalizing current from these outputs. A pseudo output current value may be added to the actual out... | 01/29/2008 |
| 7277782 | Control system and method for electric vehicle An electric traction vehicle is described herein which may be used to provide power to off-board electric power-consuming systems or devices. The electric traction vehicle may provide 250 kilowatts or more of three phase AC power to an off-board electric power consu... | 10/02/2007 |
| 7269038 | Vrms and rectified current sense full-bridge synchronous-rectification integrated with PFC A synchronous full bridge rectifier is controlled to provide a power factor near unity. The full bridge rectifiers are transistors each with a controlling input. The AC input signal and currents within the circuit are sensed and sent to a controller. In response, th... | 09/11/2007 |
| 7257010 | Power supply circuit A power supply circuit comprises a bridge circuit that has four rectifier elements connected and produces a rectified voltage between a positive side output terminal and a negative side output terminal of the power supply circuit, two of the four rectifier elements ... | 08/14/2007 |
| 7250742 | Digital control of bridgeless power factor correction circuit A circuit for providing power factor correction includes a bridgeless boost converter circuit and a control circuit receiving an input AC line voltage of the bridgeless boost converter circuit, wherein the control circuit provides a pulse width modulated signal to c... | 07/31/2007 |
| 7236380 | Rectifier system having different rectifier elements A rectifier system, in particular a rectifier bridge for a three-phase generator, includes a plurality of rectifier elements, specifiable rectifier elements being different from the other rectifier elements in at least one property. The rectifier elements are, for e... | 06/26/2007 |
| 7212407 | Electrical power converter method and system employing multiple output converters A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 05/01/2007 |
| 7202694 | Current sensing structure for integrated power switches Circuits and methods to sense the current through a coil of an integrated switching converter, applicable to boost and to buck converters, have been achieved. The present invention uses a “replica biasing” technique to avoid a resistor for current measurement. T... | 04/10/2007 |
| 7187548 | Power converter having improved fluid cooling A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support, which may be controlled in a closed-loop manner. Interfacing between circuits, circuit mounting... | 03/06/2007 |
| 7187568 | Power converter having improved terminal structure A terminal structure for power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in removing heat fr... | 03/06/2007 |
| 7180763 | Power converter A power converter comprising a DC/AC bridge circuit electrically coupled between positive and negative DC bus terminals and a set of phase terminals, a DC/DC bridge circuit electrically coupled to the positive and negative DC bus terminals and a set of DC bridge ter... | 02/20/2007 |
| 7180270 | Frequency converter for high-speed generators The present invention relates to a method and to a device for adapting the alternating current generated by a generator (1) and the alternating voltage generated by a generator (1) to a grid (8), whereby the generator (1) has at least one... | 02/20/2007 |
| 7177153 | Vehicle drive module having improved cooling configuration An electric vehicle drive includes a thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as bet... | 02/13/2007 |
| 7173834 | Half-controlled silicon-controlled rectifying system and method thereof A half-controlled silicon control rectifying system and method thereof are provided. In this case, the first detection unit detects the zero cross phase of the triphase AC in input port thereof. The second detection unit detects the voltage of the DC bus. Then the c... | 02/06/2007 |
| 7164591 | Bridge-less boost (BLB) power factor correction topology controlled with one cycle control The bridgeless boost topology reduces the power dissipation, cost, and size of prior PFC systems by eliminating the intrinsic loss of the input rectifier bridge. Sensing of the input line voltage by the controller is unnecessary. The use of One Cycle Control (also k... | 01/16/2007 |
| 7161307 | Power factor correction apparatus with embedded DC—DC converter A power factor correction apparatus with an embedded direct-current to direct-current (DC-DC) converter is provided. The apparatus includes a power factor controller, a high-voltage adapter and a low-voltage adapter. The power factor controller, which receives an AC... | 01/09/2007 |
| 7157807 | Three phase rectifier circuit with virtual neutral A rectifier circuit powers three power conversion modules using a three phase AC input without a neutral connection. The rectifier circuit includes a first bridge rectifier that is connected to a first phase of the three phase AC input and that produces a first rect... | 01/02/2007 |
| 7142434 | Vehicle drive module having improved EMI shielding EMI shielding in an electric vehicle drive is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in remov... | 11/28/2006 |
| 7126053 | Power generation system and power generation apparatus In a power generation system of this invention, the outputs from power generation layers electrically connected in series are input to corresponding power conversion devices, and boosted outputs are connected in parallel and fed to a load. Alternatively, the output ... | 10/24/2006 |
| 7116537 | Surge current prevention circuit and DC power supply A surge current prevention circuit and DC power supply for preventing surge current in various operation applications with a small circuit configuration. A power switch connects an external power supply and a load. A first PMOS transistor is connected to a constant ... | 10/03/2006 |
| 7095612 | Cooled electrical terminal assembly and device incorporating same A terminal structure provides interfacing with power electronics circuitry and external circuitry. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the terminal structure and the circuits through fluid ... | 08/22/2006 |
| 7082043 | Drive circuit for a synchronous rectifier, method of providing drive signals thereto and power converter incorporating the same The present invention provides a transition-isolating drive circuit for a synchronous rectifier. In one embodiment, the transition-isolating drive circuit includes drive switches coupled to a transformer winding and configured to provide drive signals for the synchr... | 07/25/2006 |
| 7061775 | Power converter having improved EMI shielding EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits th... | 06/13/2006 |
| 7046524 | Power supply device comprising several switched-mode power supply units that are connected in parallel The invention relates to a power supply device having several switch-mode power supplies connected in parallel to supply at least one consuming unit, each switch-mode power supply generating an output current I0 and an output voltage U0(I0... | 05/16/2006 |
| 7032695 | Vehicle drive module having improved terminal design A terminal structure for vehicle drive power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in re... | 04/25/2006 |
| 7031128 | Power circuit protection apparatus A power circuit protection apparatus halting an operation of a pulse width modulation (PWM) controller when an abnormal state is generated due to an open or short in a secondary side winding of a transformer is provided. The apparatus includes: a transformer; an out... | 04/18/2006 |
| 7016192 | Electrical power converter method and system employing multiple-output converters A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 03/21/2006 |
| 7012817 | Converter with integrated active clamp circuit and bias circuit A converter includes a transformer having a primary winding, a secondary winding and an auxiliary winding, a first switching device for connecting an input voltage to the primary winding of the transformer, an output circuit connected to the secondary winding, a con... | 03/14/2006 |
| 7012822 | Integrated traction inverter module and DC/DC converter Integrated power conversion systems and methods for use in an electric vehicle having an electric motor, a primary high-voltage energy source, and an auxiliary energy source including a traction inverter module operable for converting a DC current generated by the h... | 03/14/2006 |
| 7006366 | Boost rectifier with half-power rated semiconductor devices A rectifier has two half-controlled bridge rectifiers which are connected in parallel to provide DC power to DC bus lines. Each bridge rectifier receives AC power through inductances such as series inductors or an isolation transformer with a single primary and two ... | 02/28/2006 |
