| 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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| 05/23/2000 | US6066934 Induction motor controller |
| 05/23/2000 | US6065298 Air conditioner automatically controlling operation based on supply voltage or supply frequency |
| 05/17/2000 | EP1001521A2 Motor control device and method, and take-up winding system |
| 05/16/2000 | US6064163 Apparatus and method for controlling a DC brush-less motor based on the duty ratio or pulse width of a detected pulse |
| 05/11/2000 | WO2000027019A1 Method and apparatus for protecting pwm cycloconverter |
| 05/10/2000 | EP0999639A1 Control method for a rotating electric machine, control device for using the same and rotating machine with this control device |
| 05/10/2000 | CN1252645A Controller for AC motor |
| 05/09/2000 | US6061498 Electric motor control system |
| 05/09/2000 | US6060860 Control apparatus for variably controlling speed induction motor |
| 05/09/2000 | US6060859 Motor driver having a booster circuit and an inverter both controlled by pulse width modulation |
| 05/09/2000 | US6060850 Electric motor control circuit |
| 05/04/2000 | WO2000025418A1 System for speed-sensorless control of an induction machine |
| 05/04/2000 | CA2315396A1 System for speed-sensorless control of an induction machine |
| 05/02/2000 | US6058036 Inverter apparatus having operation specifications determined by type of I/O block which is connected to basic control unit |
| 05/02/2000 | US6058032 Multiplex pulse-width modulation power converter |
| 05/02/2000 | CA2057753C Procedure for producing the speed reference for a crane motor |
| 04/25/2000 | US6054837 Polyphase induction electrical rotating machine |
| 04/20/2000 | DE19843133A1 Verfahren zum Messen der Drehzahl einer Induktionsmaschine A method for measuring the speed of an induction machine |
| 04/19/2000 | CN1051660C Method and apparatus for control of rotary magnet type polyphase synchronous motor |
| 04/12/2000 | CN1250244A Driver for switching reluctance motor |
| 04/11/2000 | US6049474 Current estimator for a three phase invertor with PWM period adjustment |
| 04/06/2000 | WO2000019596A1 Control device of induction motor |
| 04/06/2000 | WO2000019594A1 Method and device for controlling an electric motor |
| 04/06/2000 | WO1998002958A9 Method and apparatus for controlling an induction motor |
| 04/05/2000 | EP0991179A1 Method of inferring initial pole position of permanent magnet brushless motor |
| 04/05/2000 | CN1249788A Drive unit for shaft of device working in synchrony with shanks of mechanical loom to form leno selvage |
| 04/04/2000 | US6046556 Motor current sensing circuit |
| 04/04/2000 | US6046553 Electrical vehicle control device having fail-safe |
| 03/30/2000 | WO2000018000A1 Voltage controller |
| 03/30/2000 | WO2000017999A1 Method for measuring the speed of an induction machine |
| 03/30/2000 | DE19944244A1 Regenerative braking system for re-extraction of electrical energy generated by regenerative operation of electric motor, has detection of armature current, supply voltage and motor speed |
| 03/30/2000 | DE19843106A1 System zur Drehzahlsteuerung von Wechselstrom-Motoren System for speed control of AC motors |
| 03/30/2000 | CA2344687A1 Method for measuring the rotation speed of an induction machine and an associated device |
| 03/29/2000 | EP0989666A1 System for speed control of AC motor |
| 03/29/2000 | EP0988677A1 Safety device for a drive mechanism |
| 03/29/2000 | CN1248818A Controller for ac motor |
| 03/29/2000 | CN1248817A System for controlling ac motor rotation speed |
| 03/29/2000 | CN1050894C Device for electrically controlling wind supply in apparatus for hot gas heating |
| 03/28/2000 | US6043624 Motor control method and motor control system |
| 03/28/2000 | US6043617 Variable speed driving apparatus for induction machines |
| 03/22/2000 | CN1050717C Method and apparatus for controlling invertor |
| 03/21/2000 | US6040673 Motor control apparatus |
| 03/16/2000 | WO2000014864A1 Method for controlling a current-regulated motor |
| 03/16/2000 | WO2000014863A1 Controller for motor |
| 03/15/2000 | CN1247646A Means and device for determining angular velocity of rotor of polyphase machine operated by field orientation without transmitter |
| 03/15/2000 | CN1050470C Control method of load-commutated synchronous motor drive |
| 03/15/2000 | CN1050397C 缝纫机控制装置 Machine controller |
| 03/09/2000 | WO2000013302A1 Controller for pwm/pam motor, air conditioner, and method of motor control |
| 03/08/2000 | EP0800718B1 Apparatus and method for starting a synchronous machine |
| 03/01/2000 | CN1246218A Driving mechanism for industrial installations, in particular for primary industry installations |
| 02/23/2000 | CN1049622C Hydraulic transmitting system in projecting molding machine |
| 02/17/2000 | WO2000008746A1 Method for the starting and steady-state supply of a permanent-magnet synchronous motor particularly for driving a hydraulic pump |
| 02/17/2000 | CA2305457A1 Method for the starting and steady-state supply of a permanent-magnet synchronous motor particularly for driving a hydraulic pump |
| 02/16/2000 | EP0980135A1 Method and apparatus for controlling an induction motor |
| 02/16/2000 | EP0980134A1 Method of protecting a high power converter and protection device for implementing the method |
| 02/16/2000 | CN1049390C Electric vehicle control system |
| 02/15/2000 | US6025692 Motor control apparatus and method of controlling motor |
| 02/15/2000 | US6025684 Servo-motor driving method |
| 02/08/2000 | US6023741 Pulse width modulation control which data transfer is inhibited by overflow signal |
| 02/08/2000 | US6023420 Three-phase inverter for small high speed motors |
| 02/08/2000 | CA2126756C Method for determining the short-circuit inductance of an asynchronous machine |
| 02/02/2000 | EP0975829A1 Drive unit for a shaft of a device working in synchrony with the shanks of a mechanical loom to form a leno selvage |
| 02/01/2000 | US6020714 Control system for a drive having an asynchronous motor |
| 01/25/2000 | CA2027983C Adjustable speed ac drive system control for operation in pulse width modulation and quasi-square wave modes |
| 01/19/2000 | EP0973252A2 Method and apparatus for using EMF to control a motor |
| 01/19/2000 | CN1241842A Field weakening control method in induction motor |
| 01/19/2000 | CN1241838A Inverter |
| 01/11/2000 | US6014497 Method and apparatus for determining a critical dwell time for use in motor controls |
| 01/11/2000 | US6014005 Method and circuit arrangement for the control of a motor |
| 01/11/2000 | CA2028476C Controller for starting and stopping electric motors |
| 01/05/2000 | CN1240539A Electric motor |
| 12/30/1999 | DE19828353A1 Control of three-phase squirrel-cage vehicle motor with measured speed and torque |
| 12/29/1999 | WO1999067104A1 Method for regulating an electrical motor |
| 12/29/1999 | CN1240064A Sensorless control method and apparatus of permanent magnet synchronous motor |
| 12/29/1999 | CN1047895C Motor operation controller and insulation type bidirectional DC voltage converter |
| 12/29/1999 | CN1047893C Apparatus for regulating elevator motor |
| 12/28/1999 | US6009003 Current/voltage control apparatus for elevator system |
| 12/28/1999 | US6008619 Motor drive apparatus and motor driving method capable of simply reducing rotating speed in PWM mode |
| 12/28/1999 | US6008616 Pole change induction motor and control apparatus and method for the same |
| 12/28/1999 | CA2149009C Apparatus for regulating an elevator motor |
| 12/22/1999 | EP0966094A2 Curtailed operation of multiple-wound induction motor following inverter failure |
| 12/22/1999 | CN1047698C Circuit for controlling power converting appts. |
| 12/21/1999 | US6005784 Voltage type inverter device and method of controlling the same |
| 12/21/1999 | US6005366 Controller for power device and drive controller for motor |
| 12/21/1999 | US6005365 Motor control apparatus |
| 12/21/1999 | US6005362 Method and system for ride-through of an adjustable speed drive for voltage sags and short-term power interruption |
| 12/16/1999 | WO1999065137A1 Method of minimizing errors in rotor angle estimate in synchronous machine |
| 12/16/1999 | DE19825722A1 Schaltungsanordnung zum Speisen eines Elektromotors Circuitry for powering an electric motor |
| 12/15/1999 | EP0964508A2 Circuit arrangement for feeding an electric motor |
| 12/15/1999 | CN1238592A Circuit arrangement for powering electric motor |
| 12/14/1999 | US6002223 Control circuit for an electric motor |
| 12/14/1999 | US6002221 Control system for an electric vehicle |
| 12/09/1999 | DE19925165A1 Position regulation device using servo motor |
| 12/07/1999 | US5998959 Regulator device for an asynchronous machine used in particular as a drive for electric vehicles |
| 12/07/1999 | US5998958 Method for estimating resistance values of stator and rotor of induction motor |
| 12/01/1999 | CN1237032A Method for estimating resistance values of stator and rotor of induction motor |
| 11/30/1999 | US5994870 Method of estimating field pole position of synchronous motor, motor controlled, and electric vehicle |
| 11/30/1999 | US5994866 Motor controller and disk drive unit |
| 11/24/1999 | EP0959553A2 Symmetric 4-space vector pulse width modulated waveform generation |
| 11/24/1999 | EP0958650A1 Driving mechanism for industrial installations, in particular for primary industry installations |