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| Application No. | Application Title | Issue Date |
| 20120105023 | AUTOMATIC AC BUS VOLTAGE REGULATION FOR POWER DISTRIBUTION GRIDS A system for automatically regulating voltage on a distribution-level AC bus having an actual voltage and a nominal voltage includes an electronic power converter connected to the distribution-level AC bus. The system generates a feedback signal representative of the ac... | 05/03/2012 |
| 20120001600 | CONTROL CIRCUIT OF INTERLEAVED PFC POWER CONVERTER A control circuit of an interleaved PFC power converter according to the present invention comprises a master switching control circuit, a slave switching control circuit, and a slave reference signal generator. The master switching control circuit generates a control s... | 01/05/2012 |
| 20110284059 | THERMOPHOTOVOLTAIC ENERGY GENERATION Inventive systems and methods for the generation of energy using thermophotovoltaic cells are described. Also described are systems and methods for selectively emitting electromagnetic radiation from an emitter for use in thermophotovoltaic energy generation systems. In... | 11/24/2011 |
| 20110273118 | Power Factor Correction Circuit A power factor correction circuit has a semiconductor integrated circuit and at least one very low Rds(on) MOSFET. The circuit also includes a silicon carbide diode for zero reverse recovery current.... | 11/10/2011 |
| 20110260701 | Multilevel Converter as Reactive Power Compensator Having Active Power Symmetrization A multilevel converter has a plurality of converter strands, which are connected to the phases of a three-phase-network in a star or delta connection. From phase voltage values and phase current values, an active component characteristic of the overall active current an... | 10/27/2011 |
| 20110260700 | POWER FACTOR CORRECTION CONVERTER AND CONTROL METHOD THEREOF A power factor correction converter and a control method thereof are provided includes an interleaving control tube set, an interface to an alternating current power supply, a first inductor, a second inductor, a third inductor, a capacitor, a first bridge arm and a sec... | 10/27/2011 |
| 20110254517 | SELF-EXCITED REACTIVE POWER COMPENSATION APPARATUS A control device of a self-excited reactive power compensation apparatus controls a reactive current output from a self-excited converter to a power system. The control device includes a first reference generating unit, a second reference generating unit, and a selectin... | 10/20/2011 |
| 20110210706 | CONVERTER DEVICE AND METHOD FOR CONVERTING ELECTRICAL POWER A converter device for power conversion in e.g. a power plant such as a wind turbine is disclose. The converter device is configured for converting an electrical input power to an electrical output power. The converter device may be configured for receiving mechanical i... | 09/01/2011 |
| 20110205768 | CHAIN-LINK CONVERTER, METHOD FOR STARTING CHAIN-LINK CONVERTER AND STATIC COMPENSATOR SYSTEM A chain-link converter including one or more phases. The one or more phases each includes one or more series-connected converter cells. The chain-link converter includes a power source connected to a converter cell of one of the one or more phases. A cost-efficient star... | 08/25/2011 |
| 20110095733 | POWER FACTOR CORRECTION CIRCUIT AND DRIVING METHOD THEREOF The present invention relates to a power factor correction circuit and a driving method thereof. The power factor correction circuit includes a power switch controlling an inductor current flowing in an inductor, an auxiliary inductor coupl... | 04/28/2011 |
| 20110096242 | DISPLAY APPARATUS AND POWER SUPPLYING METHOD THEREOF A display apparatus and a power supplying method are provided. The display apparatus includes a signal receiver which receives a video signal; a signal processor which processes the video signal; a display unit which displays an image based on a video signal processed b... | 04/28/2011 |
| 20110096063 | DISPLAY APPARATUS AND POWER SUPPLY METHOD THEREOF There is provided a display apparatus including: a signal receiving unit which receives an image signal; a signal processing unit which processes the image signal; a display unit which displays an image based on the image signal; and a power supply unit which supplies a... | 04/28/2011 |
| 20110095734 | CASCADED PFC AND RESONANT MODE POWER CONVERTERS A power supply includes a PFC (power factor correction) converter that has an input and an output. The PFC converter input is coupled to an input of the power supply. The power supply also includes a resonant mode converter that has an input and an output. The resonant ... | 04/28/2011 |
| 20110095732 | POWER FACTOR CORRECTION CIRCUIT AND DRIVING METHOD THEREOF The present invention relates to a power factor correction circuit and a driving method thereof. The power factor correction circuit receives an input voltage and maintains an output voltage at a constant level by controlling switching oper... | 04/28/2011 |
| 20110037443 | PARALLEL CONNECTED PFC CONVERTER A parallel PFC converter comprises a first PFC circuit, a second PFC circuit, and a voltage divider. The second PFC circuit is connected in parallel with the first PFC circuit for generating an output voltage of the parallel PFC converter. The voltage divider is coupled... | 02/17/2011 |
| 20100171472 | Statcom System For Providing Reactive And/Or Active Power To A Power Network A static compensator system for providing reactive and/or active power to a power network. The system includes a static compensator, which has a DC capacitor Ud and a voltage source converter. The static compensator is connected to an energy storage device. T... | 07/08/2010 |
| 20100134076 | REACTIVE POWER REGULATION AND VOLTAGE SUPPORT FOR RENEWABLE ENERGY PLANTS Systems and methods are provided for reactive power regulation and voltage support for renewable energy plants. In one embodiment, a system and method are provided for coordinating voltage and reactive power output of a plant with one or more requirements associated wit... | 06/03/2010 |
| 20100127671 | INTERLEAVED POWER FACTOR CORRECTOR BOOST CONVERTER The present invention relates to an interleaved power factor (PFC) correction boost converter. In order to enable the interleaved PFC boost converter circuit to operate over a wide range of input voltages and frequencies the circuit comprises: A first converter (A); A s... | 05/27/2010 |
| 20100013444 | POWER CONVERTER This invention relates to a power converter (1) comprising a converter input (3), a converter output, a power factor pre-regulation stage (5), an isolation stage (7) and a control unit (9). The power factor pre-regulation stage (5 | 01/21/2010 |
| 20090278511 | METHOD FOR REDUCING THE REACTIVE POWER REQUIREMENT OF A FUNDAMENTAL FREQUENCY CLOCKED POWER SUPPLY SIDE CONVERTER UNDER NO LOAD AND WITH LOW MOTOR LOADING The invention relates to a method for reducing the idle current requirement of a base frequency clocked supply side converter (1) on idle and with low motor loads, provided with controllable semiconductors (T1,T2,T3,T4, T5,T6... | 11/12/2009 |
| 20090251114 | ALTERNATING-CURRENT POWER SUPPLY DEVICE RECOVERING MAGNETIC ENERGY The present invention relates to an alternating-current power supply device which can improve a power factor of an alternating-current load, realizes low cost and miniaturization, and recovers magnetic energy. The alternating-current power supply device includes a bridg... | 10/08/2009 |
| 20090230929 | 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 firs... | 09/17/2009 |
| 20090224729 | Dynamic voltage compensator used in three-phase power supply system At least one embodiment of the present invention proposes a dynamic voltage compensator for compensating voltage fluctuations in a three-phase power supply system. In at least one embodiment, the dynamic voltage compensator includes two dynamic voltage restorers (DVR), ... | 09/10/2009 |
| 20090200994 | METHOD AND APPARATUS FOR DISTRIBUTED VAR COMPENSATION A method and apparatus for generating on-demand power. The method comprises receiving a peak reactive current request, generating a control signal based on the peak reactive current request, and utilizing the control signal to drive a DC/AC inverter to generate reactive... | 08/13/2009 |
| 20090146619 | POWER FACTOR CORRECTION METHOD FOR AC/DC CONVERTERS AND CORRESPONDING CONVERTER An indirect and passive method for AC/DC( converter power factor correction is disclosed. The correction is achieved by stabilizing the input impedance of the converter with keeping the inversely proportional dependence between the current iconv(t) and voltag... | 06/11/2009 |
| 20090102436 | Controller for the three-phase cascade multilevel converter used as shunt active filter in unbalanced operation with guaranteed capacitors voltages balance The present invention comprises a controller for the cascade H-bridge three-phase multilevel converter used as a shunt active filter. Based on the proposed mathematical model, the controller is designed to compensate harmonic distortion and reactive power due to a nonli... | 04/23/2009 |
| 20090034301 | Switching Power Converter Controlled by a Winding Voltage Sampler This invention discloses a switching power converter controlled by a winding voltage sampler, including an input circuit with an input end, an output circuit with an output end, one or more switches, a controller to regulate on/off of the switch, a winding voltage sampl... | 02/05/2009 |
| 20090033296 | DEVICE, METHOD, AND SYSTEM FOR IMPROVING ELECTRICAL POWER FACTOR AND HARMONIC POWER QUALITY THROUGH ACTIVE CONTROL OF POWER QUALITY IMPROVING ELECTRICAL APPLIANCES A system, method and device for controlling and modifying the current drawn by an electrical load in a way that will improve the electrical power factor and harmonic quality of at least a portion of an electrical power system. In one embodiment of the invention, the inv... | 02/05/2009 |
| 20080272748 | Power Factor Correction (PFC) Controller and Method Using a Finite State Machine to Adjust the Duty Cycle of a PWM Control Signal A power factor correction (PFC) controller and method uses a finite state machine to adjust the duty cycle of a pulse width modulation (PWM) switching control signal. The PFC controller has a target current generator that receives the link output voltage and generates a... | 11/06/2008 |
| 20080252268 | Method for actuation, and actuating circuit for a switch in a power factor correction circuit The document describes a method and an actuating circuit for actuating a switch regulating the power consumption in a power factor correction circuit which has input terminals for applying an input voltage and output terminals for providing an output voltage. In this ca... | 10/16/2008 |
| 20080246445 | Power factor correction by measurement and removal of overtones A power factor correction circuit (42/44) responsive to an input power supply signal at an input supply voltage (VAC) that varies largely sinusoidally with time at a fundamental supply frequency contains regulator/control circuitry (60, 62, and ... | 10/09/2008 |
| 20080246444 | SYSTEM AND METHOD FOR POWER CONTROLLER System and method for power controller. According to an embodiment, the present invention provides a power factor correction apparatus. The apparatus includes a multiplier component that is configured to process a first input signal and a second input signal. For exampl... | 10/09/2008 |
| 20080211462 | METHOD AND APPARATUS FOR ACTIVE POWER FACTOR CORRECTION A power factor correction method and apparatus which use Pulse Frequency Modulation (PFM) to control an AC/DC converter is disclosed. The average current drawn by the AC/DC converter is compared with a reference sinusoidal signal and the error is used to determine the s... | 09/04/2008 |
| 20080211463 | METHOD AND APPARATUS FOR ACTIVE POWER FACTOR CORRECTION WITHOUT SENSING THE LINE VOLTAGE A power factor correction apparatus which uses Pulse Frequency Modulation (PFM) to control an AC/DC converter is disclosed. Only a current signal from the converter is used to determine the switching frequency. Sensing of the input line voltage is not needed. The switch... | 09/04/2008 |
| 20080211464 | SYSTEMS OF PARALLEL OPERATING POWER ELECTRONIC CONVERTERS A converter unit is disclosed which produces an output voltage based on reference signals (u*d, u*q) that are generated from active and reactive components (P, Q) of the converter's output power. A first reference signal for a reactive component of... | 09/04/2008 |
| 20080205103 | POWER FACTOR CONTROL SYSTEMS AND METHODS A boost converter comprises an inductance that receives an input signal. A switch controls current supplied via the inductance to a load. A power factor control module comprises a mode control module that selects an operating mode of the boost converter and a switch con... | 08/28/2008 |
| 20080197818 | Switching converter having an activatable and deactivatable damping circuit A switching converter for power factor correction which has-input terminals, an inductive storage element coupled to the input terminals, a rectifier arrangement, a control arrangement, and a damping circuit. The rectifier arrangement is connected to the inductive stora... | 08/21/2008 |
| 20080157727 | POWER FACTOR CORRECTION APPARATUS A power factor correction apparatus is for correcting a power factor of transmission lines. The power factor correction apparatus includes a switch, a compensator, a detecting apparatus, a voltage processing circuit, a voltage comparison unit, and a time-delay unit. The... | 07/03/2008 |
| 20080106099 | Wind Power Generation Apparatus, Wind Power Generation System and Power System Control Apparatus An interface device transmits a reactive power command depending on a power system from a voltage regulation device of the power system to a wind power generation apparatus electrically connected to the power system, and the wind power generation apparatus receives the ... | 05/08/2008 |
| 20080061747 | SYSTEM AND METHOD FOR DC POWER GENERATION FROM A RELUCTANCE MACHINE A system and method is provided for generating DC power using a synchronous reluctance machine (12) or a salient-pole synchronous machine (102) and a power converter (110). The present invention can be used to achieve power production for a synchron... | 03/13/2008 |
