Patents for H02M 7 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output (46,189)
12/1997
12/31/1997WO1997050170A1 Independent load sharing of ac power systems connected in parallel
12/31/1997CN1169213A Method for measuring phase currents in inverter
12/31/1997CN1169054A Conversion device with output modulation circuit
12/31/1997CN1169053A AC/DC converting circuit
12/31/1997CN1169050A Stable ac network able for anti reactive load undulation, and reactive power compensating device
12/31/1997CN1169049A Capacity judging apparatus of capacitor in power converter outputting three level voltage
12/30/1997US5703771 For providing power to a load circuit
12/30/1997US5703767 Apparatus and method to prevent saturation of interphase transformers
12/30/1997US5703459 Driver for an induction motor
12/30/1997US5703438 Line current filter for less than 10% total harmonic distortion
12/30/1997CA2158374C Method and closed-loop control arrangements for the transmission of direct current
12/29/1997EP0814559A2 AC/DC power converter device
12/24/1997WO1997049170A1 Multiplex pulse-width modulation power converter
12/24/1997WO1997049165A1 Gate drive circuit for an scr
12/24/1997CN1168748A Power rectifier circuit
12/24/1997CA2208304A1 A load insensitive power supply
12/23/1997US5701243 High-power factor series resonant rectifier circuit
12/23/1997US5701239 High-voltage direct current transmission installation having a high voltage regulation capability
12/23/1997US5701237 Switching power supply
12/23/1997US5699609 Method of making power substrate assembly
12/21/1997CA2208189A1 Portable emergency response communications system and method
12/20/1997CA2208978A1 Ac/dc power converter device
12/18/1997WO1997048175A1 Improved electrical signal supply
12/18/1997DE19636248C1 Switching load relief method for power IGBT
12/18/1997DE19624117A1 Medium frequency bridge inverter with series oscillatory circuit
12/17/1997EP0813292A2 Power inverter having three or more parallel driven PWM-type power inverting units
12/17/1997EP0813284A2 Process for stabilizing of an AC network against reactive power fluctuations and reactive power compensating apparatus
12/17/1997EP0812488A2 Integrated driver for half-bridge circuit
12/17/1997EP0812487A1 Protective circuit for series-connected power semiconductors
12/17/1997EP0601091B1 Resonance mode converter with a series-parallel resonance
12/17/1997CN2271068Y 逆变器 Inverter
12/17/1997CN2271067Y Outer bridge self-exciting starting thyristor parallel inverter
12/17/1997CN1168202A Circuit arrangement
12/17/1997CN1168016A System networking electric generator
12/17/1997CN1036749C Inverter apparatus for electric rolling stock
12/16/1997US5699241 Switching power source unit
12/16/1997US5699240 For driving a polyphase ac motor by power from a power supply
12/16/1997US5699238 Zero voltage switching controller of resonance mode converter and electronic ballast using the same
12/11/1997WO1997047071A1 Electric circuit
12/11/1997WO1997047070A1 Ac/ac converter
12/11/1997CA2255918A1 Ac/ac converter
12/10/1997EP0812055A2 Multi-Level Inverter
12/10/1997EP0811901A2 Voltage rectifying and smoothing circuit
12/10/1997EP0811522A2 Multi-current traction system and method
12/10/1997EP0606501B1 Power regeneration system
12/10/1997CN1167055A Multiple power sources supplied propulsion system and realizing method
12/04/1997WO1997045921A2 Electromagnetic device
12/04/1997WO1997045907A2 Rotating electrical machine plants
12/04/1997WO1997045848A1 A dc transformer/reactor
12/04/1997WO1997045847A1 Transformer/reactor
12/04/1997DE19722175A1 Drive system for electric vehicle
12/04/1997DE19719490A1 Durchflußleistungswandler Durchflußleistungswandler
12/04/1997CA2256535A1 Rotating electrical machine plants
12/04/1997CA2256469A1 Transformer/reactor
12/04/1997CA2256347A1 Electromagnetic device
12/04/1997CA2255742A1 A dc transformer/reactor
12/03/1997EP0810713A2 Apparatus and method for detecting an inverter islanding operation
12/03/1997EP0809876A2 Series-compensated converter station
12/03/1997EP0724791B1 Converter circuit
12/03/1997CN1036625C Electric power conversion equipment
12/03/1997CN1036624C Method for setting up operating constant of diverting apparatus
12/02/1997US5694311 Power supply system
12/02/1997US5694307 Integrated AC/DC and DC/DC converter
12/02/1997US5694306 Method and device for control of a series-compensated converter station
12/02/1997US5694025 Battery charger with control circuit
11/1997
11/27/1997WO1997044889A1 Converter with modular construction
11/27/1997WO1997044888A1 Drive device for roll stands
11/27/1997WO1997044887A1 Inverter system
11/27/1997WO1997044886A1 Air-cooled inverter in the megawatt range
11/27/1997DE19711016A1 Umrichter mit modularem Aufbau Inverter with a modular structure
11/27/1997DE19654912A1 Rectifier circuit for LV inputs e.g. for signal- or location- systems
11/27/1997DE19639962A1 Antriebseinrichtung fü Walzgerüste Drive means fo rolling mills
11/27/1997DE19636094A1 Luftgekühlter Umrichter im Megawattbereich Air-cooled inverter in the megawatt range
11/27/1997DE19620442A1 Unrichtersystem Unrichtersystem
11/26/1997EP0809292A2 Power transistor module
11/26/1997EP0808505A1 Cryogenic electronics power supply
11/26/1997EP0746809A4 Electronic ballast with low harmonic distortion
11/26/1997EP0653115B1 Polarity reversing dc power supply for remotely located equipment
11/26/1997CN1166087A Method and apparatus for compensating voltage drror caused by dead time of motor driving inverter
11/26/1997CN1166082A Converter
11/26/1997CN1166081A Switched-mode power supply
11/26/1997CN1166078A Output voltage compensating circuit
11/26/1997CN1166077A Supply circuit of two-wire wide phase angle light and speed regulating controller
11/26/1997CN1036512C Electric power conversion device for alternating electric car
11/26/1997CN1036508C Consumable electrode D.C. ARC welder
11/25/1997US5691891 In a power supply
11/25/1997US5691607 Modular high power modulator
11/25/1997US5691603 Electronic ballast with multiple lamp loads
11/25/1997US5691577 Reflector-pump network for preempting AC power supply harmonic distortion and for satiating the complex harmonic power demand of a rectifier
11/25/1997US5691556 Step-up semiconductor integrated circuit and electronic equipment using the semiconductor integrated circuit
11/25/1997CA2051017C Ac/dc power converting apparatus
11/20/1997WO1997043823A1 Three-terminal power mosfet switch for use as synchronous rectifier or voltage clamp
11/20/1997DE19654911A1 Oscillator with feed back amplifier and tuner circuit
11/20/1997DE19620127A1 Energy supply method for two rail vehicle generating electromagnetic signal marker
11/19/1997EP0808016A1 PWM inverter apparatus
11/19/1997EP0808015A2 Switching power supply
11/19/1997EP0807546A1 Electric vehicle power supply
11/19/1997EP0746899A4 Switching regulator having high current prevention features
11/19/1997CN1165594A Digital pulse width modulator with integrated test and control
11/19/1997CN1165593A Controller for PWM-controlled converter