H02M 5 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases

Patents for H02M 5 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases (13,094)
12/1997
12/11/1997	CA2255918A1 Ac/ac converter
12/04/1997	DE19722162A1 Circuit for controlling power drawn by AC consumer load e.g. electric fan motor for dryer
11/1997
11/26/1997	EP0808552A1 Ballast system
11/25/1997	US5691628 Regulation of current or voltage with PWM controller
11/25/1997	CA2051017C Ac/dc power converting apparatus
11/19/1997	EP0808017A1 Air conditioning apparatus usable for wide-range source voltage
11/18/1997	US5689411 Proportional DC power control system and method
11/12/1997	EP0689689A4 Energy saving power control system
11/11/1997	US5687068 Power supply for in-line power controllers and two-terminal electronic thermostat employing same
11/06/1997	DE19713239A1 Control of electrical power transmission system, such as transformers and switched power supplies
11/05/1997	CN1164143A Frequency converter
11/04/1997	US5684686 Boost-input backed-up uninterruptible power supply
11/04/1997	US5684376 Solid state motor speed control
11/04/1997	US5682826 Systems and methods for controlling a draft inducer for a furnace
10/1997
10/29/1997	CN2266225Y Light-controlling speed regulator
10/28/1997	US5682091 Digital power optimization system for polyphase AC induction motors
10/23/1997	WO1997038873A1 High voltage power converter system
10/22/1997	CN2265626Y Current transformer
10/22/1997	CA2203050A1 Solid state ac switch with self-synchronizing means for stealing operating power
10/21/1997	US5680021 Systems and methods for controlling a draft inducer for a furnace
10/16/1997	DE19614627A1 Hochspannungs-Stromrichtersystem High-voltage power converter system
10/15/1997	CN1162372A Method and device for controlling load power via phase adjustment system
10/08/1997	CN1161596A Electric power conversion circuit by changing sine ac power to balance amplitude-modulated wave
10/07/1997	US5675483 Power supply comprising means for improving the power factor
10/02/1997	DE19612117A1 AC voltage regulator circuit arrangement for AC motor control
10/01/1997	CN1160946A Power-supply unit, controlling method for power-supply unit, power-supply unit for computer game and controller of supply unit for computer game
09/1997
09/30/1997	US5672950 Voltage, phase and frequency control by miniature inverter system
09/30/1997	US5672941 Electronic power control apparatus
09/25/1997	WO1997035380A1 Digital power optimization system for induction motors
09/23/1997	US5670936 Power controller enclosure
09/18/1997	WO1997034362A1 Asynchronous intergrid transfer apparatus
09/18/1997	CA2248574A1 Asynchronous intergrid transfer apparatus
09/17/1997	CN2262778Y Electronic speed regulating switch for air conditioner
09/10/1997	EP0794608A2 Trickle power supply
09/10/1997	CN2262305Y Safety voltage regulator
09/05/1997	CA2195296A1 Trickle power supply
09/03/1997	EP0792533A1 A system for off-mains switching of current consuming devices such as actuators
09/03/1997	EP0792482A1 Process for controlling the power output of an electric circuit, in particular a sinusoidal wave source
09/03/1997	CN2261687Y Remote controlling switch without zero line
08/1997
08/20/1997	EP0647388B1 A power controller, for example a dimmer for electric lamps
08/20/1997	CN2260403Y High frequency contravariant high valtage power supply arrangement for electrostatic cleaner
08/20/1997	CN1035709C Voltage-type pwm converter/inverter system and process for controlling the same
08/14/1997	WO1997020375A3 Apparatus and method for interline power flow control
08/13/1997	EP0788678A1 Method and device for load power control via a phase adjustment system
08/13/1997	CN2259715Y Light-controlling regulator
08/06/1997	CN2259026Y Low voltage, large current transformer
08/05/1997	US5654882 Power converter and air conditioner using same
08/05/1997	US5654627 Method of automatically changing upper, balanced and lower voltage in electric power saving transformer and the device of the same
08/05/1997	US5654591 Uninterruptible power supply with passing neutral, comprising a twin step-up chopper
07/1997
07/29/1997	US5652504 Energy saving power control system
07/24/1997	DE19617048C1 Control method for power regulator of electric motor drives
07/17/1997	WO1997025766A1 Multilevel power converting apparatus
07/16/1997	EP0784375A2 Method and circuit arrangement for operating a two-quadrant power supply converter arrangement
07/16/1997	CN1154595A AC series control circuit with two dc power supply
07/09/1997	EP0782785A1 Improved zero-voltage-transition (zvt) 3-phase pwm voltage link converters
07/09/1997	EP0782784A1 Process for regulating a four-quadrant regulator operating as a mains converter
07/09/1997	EP0634087B1 Electronic ballast for a gas discharge lamp
07/09/1997	CN2257633Y Multipurpose controllor
07/02/1997	EP0782245A2 Three-phase bridge rectifier
07/02/1997	CN1153424A Method of carrying out safety power-saving running for electric appliances, e.g. motors
07/02/1997	CN1153421A Distribution base panel and electric power conversion arrangement using same
06/1997
06/25/1997	EP0780959A2 Converter system with coupled DC link circuits
06/25/1997	EP0638211B1 Electronic power regulator
06/25/1997	CN2257104Y Frequency-changing isolation reducing transformer
06/24/1997	US5642020 Electric vehicle control device
06/19/1997	WO1997022232A1 Ballast system
06/19/1997	WO1997022174A1 A converter device
06/17/1997	US5640314 Symmetrical power system
06/12/1997	DE19546132A1 Circuit for limiting in-rush current and overvoltage in voltage converter
06/11/1997	EP0777825A1 Pumping unit with very low voltage three-phase motor
06/11/1997	CN1151626A Control and protection system for AC-DC conversion system
06/05/1997	WO1997020375A2 Apparatus and method for interline power flow control
06/04/1997	CN2255694Y Alternating ballast device
06/03/1997	US5635827 Power control system
06/03/1997	US5635826 Input waveform follow-up AC power source system
05/1997
05/29/1997	WO1997019511A1 Load power control method using a phase control system, and device therefor
05/28/1997	EP0775383A2 Control circuit for cryogenically-cooled power electronics employed in power conversion systems
05/28/1997	CN2255118Y Power supply of ultrasonic cleaning machine
05/28/1997	CN2255116Y Automatic regulation type charging means
05/27/1997	CA2056010C Inverter device for stable, high power-factor input current supply
05/22/1997	DE19542975A1 Three phase heater circuit for saunas
05/21/1997	EP0746808A4 Switchmode ac power controller
05/21/1997	CN1150506A Switch with controlled rise and fall characteristics
05/20/1997	US5631813 Regenerative AC/DC/AC power converter for a plurality of motors
05/20/1997	US5631812 Motor drive control method
05/20/1997	US5631811 Auxiliary power supply device
05/15/1997	DE19541370A1 Converter unit with superconducting magnetic energy store
05/14/1997	EP0717887B1 A.c. controller
05/13/1997	US5629607 Initializing controlled transition light dimmers
05/13/1997	CA2066427C Regulated ac power system energized by variable speed prime mover
05/02/1997	EP0770282A1 Direct a.c. converter
04/1997
04/30/1997	DE19639857A1 Load voltage supply low in higher harmonics for compact fluorescent lamp
04/29/1997	US5625548 Control circuit for cryogenically-cooled power electronics employed in power conversion systems
04/23/1997	CN2253048Y Energy saving light regulation wall switch
04/22/1997	CA2058207C Inverter with shared chopper function for high input power factor with restrained higher harmonies
04/15/1997	US5621628 Power converter
04/15/1997	US5621627 A.C. to A.C. power converter for the adaptive correction of waveform abnormalities
04/10/1997	WO1997013318A1 Motor controller
04/09/1997	CN1146920A Liquid temp. controller for transfusion
04/08/1997	US5619407 For converting three-phase ac power to nine-phase ac power

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