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)
04/1997
04/08/1997US5619081 Dimmer
03/1997
03/30/1997CA2159538A1 Power saving circuitry
03/27/1997CA2186556A1 Power line control system
03/25/1997US5614811 Power line control system
03/25/1997CA2120213C Power inverting apparatus
03/19/1997CN2249989Y Thyristor stepless voltage regulator with power indicator and short circuit protector
03/13/1997WO1997009773A1 Power converter and power converting method
03/12/1997EP0762623A2 Power conversion apparatus
03/12/1997EP0762622A1 High voltage DC link converter control and protection system
03/11/1997US5610805 Uninterruptible power supply with a back-up battery coupled across the a.c. input
03/06/1997WO1997008814A1 Method and device for controlling a four-dimensional vector for a controlled system by means of a discrete-value control element with a limited switching frequency
03/06/1997WO1997008601A1 Process for controlling the power output of an electric circuit, in particular a sinusoidal wave source
03/06/1997DE19532377A1 Supply of AC load especially AC motor
03/06/1997DE19532142A1 Verfahren und Vorrichtung zur Regelung eines vierdimensionalen Vektors einer Strecke mittels eines wertediskreten Stellgliedes mit begrenzter Schaltfrequenz Method and apparatus for controlling a four-dimensional vector of a track by means of a value-discrete control element with a limited switching frequency
03/05/1997EP0760551A2 Electrical device
03/05/1997CN2248906Y Illumination power converting arrangement for lamp box for showing goods
03/04/1997US5608615 Asynchronous intergrid transfer apparatus
03/04/1997US5608301 Motor control system for centrifugal machine
02/1997
02/27/1997DE19632759A1 Power control for single-phase fan motor or heating resistance
02/26/1997EP0759655A2 Method and device for reducing power consumption of an electric apparatus fed by a voltage converter
02/26/1997EP0759234A1 Switch with controlled rise and fall characteristics
02/26/1997CN1143852A Power converter
02/26/1997CN1034148C Constant magnetic flux, step-by-step rotary, pulse wide modulation, frequency change power
02/25/1997US5606492 Intermittent on/off regulator type DC power supply
02/25/1997US5606244 Mobile AC power source system
02/25/1997CA2018883C Ozone generator equipment and methods
02/20/1997WO1997006598A1 Appliance ac power control apparatus
02/19/1997EP0513346B1 Solid state current controlled interruption system
02/12/1997CN1142706A Electronic impulse electric supply
02/12/1997CN1034041C Exchange type power saver
02/11/1997US5602725 Special purpose power control devices using 3-phase PWM converters for three phase AC power
02/11/1997US5601741 Method and apparatus for receiving a universal input voltage in a welding power source
02/05/1997CN2246869Y Electronic timing and votage-regulating controller
02/04/1997US5600552 Direct current power supply for use in series with a load in an alternating current circuit
01/1997
01/30/1997WO1997003493A1 Electric power converter for ac electric vehicles
01/30/1997WO1997003451A1 Power saving apparatus using mutual inductive reactor
01/29/1997CN2246350Y Power source phase-sequence conversion control device
01/28/1997US5598326 High frequency AC/AC converter with PF correction
01/28/1997CA2070614C Reactive power control system
01/15/1997CN1140530A Regulated power supply unit with electronic transformer
01/14/1997US5594636 Matrix converter circuit and commutating method
01/14/1997US5594634 DC link inverter having soft-switched auxiliary devices
01/09/1997WO1997001213A1 Rectification, derectification and power flow control
01/09/1997CA2223679A1 Rectification, derectification and power flow control
01/08/1997CN2244798Y Light dimming apparatus for help to navigate in airport
01/07/1997US5592368 Static frequency converter which compensates for fluctuations in a voltage source while controlling the waveform applied to a charge while controlling the waveform applied to a charge
01/02/1997EP0751610A1 Motor control system for centrifugal machine
12/1996
12/31/1996US5590031 System for converting electromagnetic radiation energy to electrical energy
12/25/1996CN2243723Y Power adjustable electric socket
12/19/1996WO1996041504A1 Phase control circuit having independent half cycles
12/19/1996DE19547465C1 Static converter arrangement with coupled voltage links e.g. for traction drives
12/18/1996EP0749190A2 Interconnection system for electrical systems having differing electrical characteristic
12/17/1996US5586017 Power generator comprising a transformer
12/17/1996US5585708 Four quadrant motor controller minimizing distortion index
12/12/1996DE19522933C1 Monitoring system for ring spinning machine with individual spindle drives
12/11/1996EP0746808A1 Switchmode ac power controller
12/10/1996US5583423 Energy saving power control method
12/04/1996EP0746184A2 Circuit arrangement for energy saving operation of electrical loads
12/04/1996EP0746086A2 Power converter
12/04/1996EP0704144A4 Soft switching circuitry
12/04/1996CN2241926Y Single-phase voltage-regulating power connector
12/04/1996CN1137193A Auxiliary power supply device
12/04/1996CN1033480C Multifunctional shock-proof voltage regulator
11/1996
11/28/1996WO1996037946A1 Power converter drive
11/28/1996DE19519424A1 Stromrichterantrieb Converter drive
11/27/1996EP0744118A1 Regulated power supply unit with an electronic transformer
11/27/1996CN2241416Y Switch power supply
11/26/1996US5578908 Phase control circuit having independent half cycles
11/20/1996EP0513349B1 Method and device for radio-navigational determinations using artificial earth-satellites
11/19/1996CA2022375C Ac-excited rotary electric machine system
11/14/1996DE19531517C1 Electrical ac signal output control method esp. for sinusoidal waveforms
11/14/1996DE19523565C1 Static converter for variable speed drive
11/13/1996CN1135679A Transforming device and air conditionor using said device
11/12/1996US5574636 Zero-voltage-transition (ZVT) 3-phase PWM voltage link converters
11/07/1996WO1996035256A1 A.c. voltage setter with a control circuit
11/07/1996DE19516546A1 Wechselspannungssteller mit einer Steuerschaltung Ac voltage controller with a control circuit
11/07/1996DE19516355A1 Feed device for frequency converter with reversible energy flux direction e.g. for electric machine control
11/06/1996CN2239671Y Electrothermal blanket switch having electronic timing, safety protecting and temp. control function
10/1996
10/30/1996EP0740387A2 Interconnection system for transmitting power between electrical systems
10/29/1996US5570279 PWM converters for three phase AC power control and AC to DC conversion
10/23/1996EP0739087A2 Asynchronous conversion method and apparatus for use with variable speed turbine hydroelectric generation
10/22/1996CA2170686A1 Interconnection system for electrical systems having differing electrical characteristic
10/17/1996WO1996032773A1 Two-phase inverter drive for a three-phase motor
10/17/1996WO1996032771A1 Energy control device
10/01/1996US5561597 Compact and efficient transformerless power conversion system
10/01/1996US5561595 Power inverter with input line conditioning
10/01/1996US5560218 Control apparatus and method for an air conditioner
09/1996
09/26/1996DE19530594C1 Electrical device energy consumption reduction system
09/25/1996CN2236191Y Voltage regulator and stabilizer contacted with pistioner and variable brush-frame
09/22/1996CA2172213A1 Regulation of current or voltage with pwm controller
09/18/1996EP0732798A1 PWM control apparatus and a system using same
09/18/1996CN1131358A AC and DC dual-purpose high voltage controllable power supply
09/18/1996CN1131357A Unipolar series resonant converter
09/04/1996EP0730339A2 Power inverting apparatus
08/1996
08/27/1996US5550463 Power supply connected in parallel with solid state switch for phase control of average power to a load
08/14/1996EP0726641A2 Method for generating two three-pHase modulation signals for a PWM controller of a matrix converter
08/14/1996CN1128913A High voltage electric power conversion method and apparatus thereof
08/13/1996US5545965 Three phase motor operated from a single phase power supply and phase converter
07/1996
07/30/1996US5540898 Ozone generator with in-line ozone sensor
07/25/1996DE19501901A1 Electro-separation filter current regulation method