| Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284) |
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| 01/05/1994 | CN1023389C Device for controlling elevator |
| 12/29/1993 | EP0575911A2 Speed control device of an electric motor and method of operation |
| 12/29/1993 | EP0416050B1 A device with a multi-phase load, a static converter and choke coils |
| 12/28/1993 | US5274541 Parallel circuit module including a diode and an IGBT |
| 12/23/1993 | WO1993026081A1 Vector controller of induction motor |
| 12/22/1993 | EP0575140A1 Speed sensorless variable voltage variable frequency induction motor drive |
| 12/21/1993 | US5272428 Fuzzy logic integrated control method and apparatus to improve motor efficiency |
| 12/21/1993 | US5271348 Drive arrangement |
| 12/14/1993 | US5270634 Polyphase alternating current motor |
| 12/14/1993 | US5270633 Ternary energy supply circuit with a high frequency rejection filter |
| 12/14/1993 | US5270632 Driving system for an induction motor having a circuit for generating a slip pulse and a phase shifting pulse |
| 12/14/1993 | US5270498 Elevator speed control apparatus with drive motor residual secondary magnetic flux control |
| 12/09/1993 | WO1993024990A1 Control method for synchronous motor |
| 12/09/1993 | WO1993024989A1 Power converter |
| 12/08/1993 | EP0572729A2 Apparatus and three phase induction motor starting and stopping control method |
| 12/07/1993 | US5268628 Phase voltage measuring device of an AC motor and a measuring method thereof |
| 12/01/1993 | EP0571755A2 Power converter for converting DC voltage into AC phase voltage having three levels of positive, zero and negative voltage |
| 11/25/1993 | WO1993023912A1 Programmed pwm inverter controller |
| 11/25/1993 | CA2112238A1 Programmed pwm inverter controller |
| 11/23/1993 | US5264773 Controller for induction motor |
| 11/05/1993 | CA2082212A1 Apparatus and three phase induction motor starting and stopping control method |
| 11/04/1993 | DE4313545A1 Control circuit for inverter depending on one or several desired values - includes excitation producing unit for producing excitation current correlative from measured signal for each phase of induction motor prim. current |
| 11/04/1993 | DE4312019A1 Three-level, three-phase inverter appts. for motor drive control - has DC supply with neutral output terminal with four switches in series between positive and negative electrode |
| 10/27/1993 | CN1077825A Power converter for converting dc voltage into ac phase voltage having three levels of positive, zero and negative voltage |
| 10/26/1993 | US5256944 Motor speed control method and apparatus with drooping compensation independent of acceleration or deceleration current and time constant of motor |
| 10/20/1993 | EP0566322A2 Automatic motor torque and flux controller for battery powered vehicle drive |
| 10/20/1993 | EP0566320A2 Reconfigurable AC induction motor drive for battery-powered vehicle |
| 10/19/1993 | US5254926 Current-mode hysteresis control for controlling a motor |
| 10/13/1993 | EP0564771A2 Drive control apparatus for electrical machine and parameter display method in drive control apparatus for electrical machine |
| 10/06/1993 | EP0564268A1 Motor-generator voltage controller for turbocharger |
| 10/06/1993 | EP0563192A1 Monitoring apparatus. |
| 10/06/1993 | CN1077065A Apparatus for chang of electric power |
| 10/06/1993 | CN1077064A Electric power converter arrangement and electric rolling stock control device using the same |
| 10/05/1993 | US5250890 Inverter control apparatus |
| 09/29/1993 | EP0562673A2 Asynchronous motor speed control method and device |
| 09/28/1993 | US5248926 Control apparatus for induction motor and electric rolling stock |
| 09/21/1993 | US5247237 Control device of induction motor |
| 09/16/1993 | DE4205778A1 Rotating electrical machine - Has outer rotor with flat permanent magnets and inner rotor with salient pole windings commutated in groups |
| 09/15/1993 | CN1076168A Device for controlling speed of elevator |
| 09/08/1993 | EP0458794B1 Process and device for controlling single-phase or multiphase a.c. controllers |
| 09/02/1993 | WO1993017490A1 Controlling device for electric motors |
| 09/01/1993 | EP0557543A1 Variable speed motor control |
| 09/01/1993 | EP0557475A1 Minimization of gto gate driver losses when antiparallel diode conduct |
| 08/31/1993 | US5241256 Method and apparatus for controlling the supply of power to an induction motor to maintain high efficiency under varying load conditions |
| 08/25/1993 | EP0556481A1 Procedure and device for operating a synchronous machine |
| 08/24/1993 | US5239252 Method and apparatus for controlling single or multiphase a.c. power controllers |
| 08/24/1993 | US5239251 Brushless doubly-fed motor control system |
| 08/24/1993 | US5239250 Capacitor-assisted line commutation for induction motor drives |
| 08/18/1993 | EP0556013A1 Energy-saving control apparatus and control method for induction motor |
| 08/18/1993 | EP0555844A1 Motor drive control apparatus having a plurality of motor characteristics |
| 08/18/1993 | EP0555574A1 Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive |
| 08/18/1993 | EP0555557A1 Control apparatus of power converter |
| 08/18/1993 | CN1075385A Control apparatus for power converter |
| 08/18/1993 | CN1075384A Energy-saving control apparatus and control method |
| 08/18/1993 | CA2088017A1 Method and device for operating a synchronous machine |
| 08/10/1993 | US5235682 Port output controller for use in microcomputer |
| 08/04/1993 | EP0397818B1 A process and device for changing the actual rotation speed of a multi-phase non-synchronous motor and a suitable motor system for applying the process |
| 08/04/1993 | EP0314812B1 Alternating current motor control system with emergency control |
| 07/29/1993 | DE4242560A1 Overcurrent protection circuit, esp for motor drive circuit semiconductor elements - contains switching device, protection diode and detectors for currents in diode and in switching element |
| 07/28/1993 | EP0552184A1 Process for determining the load of an asynchronous motor fed via a frequency converter and a device for carrying out the process. |
| 07/28/1993 | EP0497783A4 Variable speed ac drive control |
| 07/28/1993 | EP0423384B1 Control arrangement for an elevator system without a speed sensor |
| 07/27/1993 | US5231339 Control device for induction motor |
| 07/22/1993 | WO1993014410A1 Method for determining the short-circuit inductance of an asynchronous machine |
| 07/21/1993 | EP0551450A1 Four quadrant motor controller |
| 07/20/1993 | US5229700 Calibration of signal feedback through VCO's |
| 07/13/1993 | US5227711 Motor controller |
| 07/06/1993 | US5225754 Control system for a motor |
| 07/06/1993 | CA1319949C Method and apparatus for controlling the magnetic flux of an induction motor |
| 07/01/1993 | DE4241702A1 Analogue=to=digital converter for electric motor speed control - counts clock pulses produced during period of PWM signal obtd. from error comparison with triangular wave |
| 06/24/1993 | DE4243394A1 Control system for electrically powered road vehicle - returns road and motor speed signals to determine optimum operating condition for drive via CVT transmission |
| 06/16/1993 | EP0546981A2 Three phase compressor over temperature protection |
| 06/15/1993 | US5220264 Control system for an AC servomotor having a permanent magnet type |
| 06/09/1993 | EP0545419A1 Inverter unit and controlling method thereof |
| 06/09/1993 | CN1021180C Method and apparatus for controlling ac current regulator of single-phase or polyphase |
| 06/02/1993 | CN1021097C Method and arrangement for controlling single-phase or multiphase ac. current resglator |
| 05/26/1993 | EP0543204A2 Electric power converter arrangement |
| 05/26/1993 | CN1021000C Control fixture for ac-regulating unit |
| 05/25/1993 | US5214367 Controller for compressor driven by induction motor |
| 05/25/1993 | US5214366 Three-phase converter for polyphase induction motors |
| 05/13/1993 | DE4137006A1 Induction motor revolution regulation system - uses calculated edge frequency corresponding to max voltage to optimise motor parameters |
| 05/13/1993 | DE4136514A1 Inverter drive circuit for variable speed centrifuge - uses IGBT transistors controlled by gate drive pulse followed immediately by gate discharge pulse |
| 05/12/1993 | EP0541253A2 Current mode hysteresis controller for pulse width modulated inverter |
| 05/12/1993 | CN1020576C Apparatus for controlling elevator |
| 05/11/1993 | US5210479 Drive circuit for an insulated gate transistor having overcurrent detecting and adjusting circuits |
| 05/05/1993 | CN1020528C Control device for induction motor |
| 05/04/1993 | US5208784 Method for influencing an acoustic source, in particular of a submerged submarine, and submarine |
| 05/04/1993 | US5208524 Current control apparatus for PWM control |
| 04/28/1993 | EP0539163A2 Inverter air conditioner |
| 04/28/1993 | EP0539029A2 Temperature compensated circuit for induction motor |
| 04/27/1993 | US5206575 Device for controlling an AC motor |
| 04/21/1993 | EP0537512A2 Circuit device for controlling a three-phase asynchronous motor powered with direct current |
| 04/21/1993 | EP0537344A1 Motor controller |
| 04/20/1993 | US5204606 From an AC power source to an induction motor |
| 04/20/1993 | US5204596 Device having a multiphase load, a static converter and inductance coils |
| 04/14/1993 | EP0536569A2 AC motor control apparatus and control apparatus of electric rolling stock using the same |
| 04/07/1993 | EP0535423A1 Electric power steering apparatus |
| 04/07/1993 | EP0535333A1 Circuit with a current actuator and a motor, especially with a rotary current actuator and a rotary current asynchronous motor |
| 04/07/1993 | EP0535281A1 Torque feedback system |
| 04/07/1993 | EP0535280A1 Flux feedback system |