| Patents for H02P 21 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation (7,114) |
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| 04/13/2000 | DE19846079A1 AC motor braking method involves regulating converter stage intermediate voltage to demand value above ideal supply voltage and torque-generating transverse current component |
| 04/06/2000 | WO2000019596A1 Control device of induction 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 | CN1249565A Method for controlling and adjusting electric drive device, and apparatus for carrying out said method |
| 03/30/2000 | WO2000017998A1 Motor controller |
| 03/30/2000 | WO2000017616A1 Method and device for determining the torque 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 | DE19844050A1 Open and closed loop control method for electrical drive involving induction motor with voltage measured at output of sine wave filter in which complex vector is assigned in rotating reference system |
| 03/30/2000 | DE19843134A1 Verfahren und Einrichtung zum Bestimmen des Drehmomentes einer Induktionsmaschine Method and device for determining the torque of an induction machine |
| 03/30/2000 | CA2344645A1 Method and device for determining the torque of an induction machine |
| 03/29/2000 | CN1249077A Apparatus and method for controlling induction motor |
| 03/29/2000 | CN1248818A Controller for ac motor |
| 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 |
| 03/16/2000 | WO2000014864A1 Method for controlling a current-regulated motor |
| 03/15/2000 | CN1247646A Means and device for determining angular velocity of rotor of polyphase machine operated by field orientation without transmitter |
| 03/14/2000 | US6037742 Method for the field-oriented control of an induction motor |
| 03/09/2000 | WO2000013298A1 Controlling movement of linear induction motor |
| 02/23/2000 | CN1049622C Hydraulic transmitting system in projecting molding machine |
| 02/16/2000 | EP0980135A1 Method and apparatus for controlling an induction motor |
| 02/10/2000 | DE19833953A1 Synchronous motor energy consumption optimization method calculates d-phase current for operation of motor at required torque and angular velocity with minimum power loss |
| 02/03/2000 | DE19834315A1 Schaltungsanordnung zur Messung und Begrenzung von Strömen in Umrichtern zur Speisung von Motoren Circuit arrangement for measuring and limiting currents in converters to feed motors |
| 02/02/2000 | EP0977337A2 Circuit for measuring and limiting currents in converters for supplying motors |
| 01/27/2000 | DE19933225A1 Torque calculation device for asynchronous motor control calculates iron losses of asynchronous motor for division by primary angle frequency before subtraction from calculated torque |
| 01/26/2000 | CN1242646A Apparatus for calculating torque generated by induction motor |
| 01/19/2000 | CN1241842A Field weakening control method in induction motor |
| 01/12/2000 | CN1241066A Speed control apparatus for induction motor |
| 01/11/2000 | US6014007 Method and apparatus for starting an AC drive into a rotating motor |
| 01/11/2000 | US6014006 Induction motor control system with speed and flux estimation |
| 01/05/2000 | DE19929649A1 Control device to control speed of induction motor having no speed sensor |
| 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 |
| 12/28/1999 | US6009003 Current/voltage control apparatus for elevator system |
| 12/28/1999 | US6008618 Zero speed start-up for a speed sensorless induction motor drive |
| 12/28/1999 | US6008617 Motor control device for high frequency AC driven motor |
| 12/28/1999 | US6008616 Pole change induction motor and control apparatus and method for the same |
| 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 | US6005365 Motor control apparatus |
| 12/16/1999 | WO1999065137A1 Method of minimizing errors in rotor angle estimate in synchronous machine |
| 12/08/1999 | EP0962045A1 Sensorless rotor position measurement process and device for induction motors with a short-circuit rotor |
| 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 | US5994867 Method and device for controlling a sensorless field-oriented asynchronous machine |
| 11/25/1999 | DE19823349A1 Status estimators for asynchronous electrical motors |
| 11/24/1999 | EP0959556A1 Flux oriented control system for asynchron motors with minimal energy |
| 11/23/1999 | US5990657 Inverter system and control system for electric vehicle |
| 11/17/1999 | EP0957572A2 Control strategy for electric motors |
| 11/17/1999 | EP0956641A1 Means and device for determining the angular velocity of a rotor of polyphase machine operated by field orientation without a transmitter |
| 11/16/1999 | US5986428 Method for controlling acceleration/deceleration of an induction motor and a control device |
| 11/02/1999 | US5977742 Electric vehicle control device |
| 10/26/1999 | US5973474 Vector control apparatus method for induction motor using magnetic flux observer of full order |
| 10/26/1999 | US5973460 Power output apparatus and method of controlling the same |
| 10/20/1999 | CN1232581A Improved current control process and device for voltage converter |
| 10/19/1999 | US5969500 Control system and method for motors |
| 10/19/1999 | US5969499 Controller for AC motor |
| 10/19/1999 | US5969496 Method of controlling operation of synchronous motor and motor control apparatus for the same |
| 10/13/1999 | CN1231541A Speed controller for induction motor |
| 10/12/1999 | US5965995 Transient inductance tuner for motor control |
| 10/07/1999 | DE19913941A1 Control unit for variable control of rpm of asynchronous motor |
| 10/06/1999 | EP0947377A2 A control system and a respective control method for supplying an asynchronous motor |
| 10/06/1999 | CN1230822A Method for controlling DC brushless motor |
| 10/05/1999 | US5963007 Current control method for an AC servomotor |
| 09/30/1999 | WO1999049564A1 Method of correcting flux midpoint influx-controlled alternating current systems |
| 09/30/1999 | WO1999049563A1 Dual stator winding induction machine drive |
| 09/30/1999 | DE19813362A1 Verfahren zur Bestimmung der Ausgangsspannung eines Zweipunkt-Wechselrichters Method for determining the output voltage of a two-level inverter |
| 09/29/1999 | EP0945970A2 Method for determining the output voltage of a two-level inverter |
| 09/29/1999 | CN1229761A Automatic calibration of current regulator control compensation for elevator motor drive with locked rotor |
| 09/28/1999 | US5959431 Method and apparatus for instability compensation of V/Hz pulse width modulation inverter-fed induction motor drives |
| 09/28/1999 | US5959430 Power conversion system |
| 09/28/1999 | US5959429 Variable speed controlling device for induction motor |
| 09/22/1999 | EP0944164A1 Sensorless control method and apparatus of permanent magnet synchronous motor |
| 09/22/1999 | EP0943481A2 Two-dimensional variable limit proportional internal regulator for the current controller in synchronous frame |
| 09/22/1999 | CN1229308A Two-dimensional variable limit proportional internal regulator for current controller in synchronous frame |
| 09/21/1999 | US5955863 Electric current control method for a servomotor |
| 09/15/1999 | EP0942522A2 Apparatus and method for controlling drive of three-phase multiplex winding motor |
| 09/14/1999 | US5952810 Motor control apparatus and method of controlling motor |
| 09/10/1999 | WO1999045632A1 Motor conroller |
| 09/07/1999 | US5949210 Two-dimensional variable limit proportional internal regulator for the current controller in synchronous frame |
| 08/25/1999 | EP0937331A1 Method and device for determining the rotational speed of a polyphase machine operating with field orientation and without a sensor |
| 08/24/1999 | US5942874 Method of ensuring stability of synchronous machine |
| 08/18/1999 | EP0936730A2 Self-commissioning controller for a field-oriented elevator motor/drive system |
| 08/17/1999 | US5940286 Method for controlling the power to be transferred via a mains inverter |
| 08/12/1999 | WO1999031793A3 Regulation of and regulator for a permanent magnet synchronous motor |
| 08/12/1999 | WO1999029031A3 Method for controlling a permanent magnet synchronous motor |
| 08/10/1999 | US5936377 Method and apparatus for correction of the flux direction of the modelled flux in a field-oriented rotating field-machine without any sensors, down to zero frequency |
| 08/05/1999 | WO1999039430A1 Method for regulating a three-phase machine without a mechanical rotary transducer |
| 08/04/1999 | CN1225205A Method and apparatus for controlling an induction motor |
| 07/27/1999 | US5929400 Self commissioning controller for field-oriented elevator motor/drive system |
| 07/14/1999 | EP0929145A2 Field oriented control for the drive of a pressing machine |
| 07/13/1999 | US5923728 Motor controller |
| 07/13/1999 | US5923144 Frequency generator for a motor controller |
| 07/07/1999 | CN1222006A Self-commissioning controller for field-oriented elevator motor/drive system |
| 07/06/1999 | US5920161 Driving system for permanent magnet type synchronous machine suitable for electric vehicle and driving control method using the same |
| 07/01/1999 | DE19756955A1 Model assisted computing of three-phase asynchronous motor torque |
| 06/30/1999 | CN1221252A Method for control speed of induction motor |