| 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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| 05/20/1998 | DE19646457A1 Verfahren und Vorrichtung zur Bestimmung einer Drehzahl einer geberlosen, feldorientiert betriebenen Drehfeldmaschine Method and apparatus for determining a rotational speed of a sensorless, field-oriented induction machine |
| 05/19/1998 | US5754026 Induction motor control method |
| 05/06/1998 | EP0840441A1 Field-oriented control for a rotating field machine operating at voltage limit |
| 05/05/1998 | US5747957 Method of controlling vectors in motor and vector-controlling inverter device |
| 04/28/1998 | US5744927 Inverter control method and apparatus |
| 04/23/1998 | DE19640591C1 Torque regulation method for induction machine |
| 04/22/1998 | EP0836765A1 Sensorless field-orientation control of an induction motor |
| 04/15/1998 | EP0836270A1 Method for controlling current of ac servo motor |
| 04/01/1998 | CN1177758A Control and operation method for rotary machine |
| 03/31/1998 | US5734251 Control apparatus for AC motor |
| 03/19/1998 | WO1998011663A1 Device for controlling induction motor and method of controlling the same |
| 03/18/1998 | EP0770282B1 Direct a.c. converter |
| 03/18/1998 | EP0739457B1 Process and device for controlling an electric induction machine with a special winding for simultaneously generating a torque and a transverse force therein |
| 03/18/1998 | CN1037797C Driving control apparatus for induction motor |
| 03/17/1998 | US5729113 Sensorless rotor velocity estimation for induction motors |
| 03/12/1998 | DE19626447A1 Pulse pattern integration method for supplying coil |
| 03/11/1998 | CN1175816A Method and apparatus for control of rotary magnet type polyphase synchronous motor |
| 03/10/1998 | US5726549 Sensor-less control apparatus for permanent magnet synchronous motor |
| 03/10/1998 | US5726545 Current controlling method for servo motor |
| 03/05/1998 | WO1998009370A1 Improved current control process and device for a voltage converter |
| 03/05/1998 | CA2263984A1 Improved current control process and device for a voltage converter |
| 03/04/1998 | EP0827267A1 Flux maximum position determining method for permanent magnet or externally excited synchronous machines and device applying this method |
| 03/04/1998 | CN1175122A Speed-change controller for induction motor |
| 02/25/1998 | EP0825059A2 Controller for driving a permanent magnet type synchronous motor |
| 02/25/1998 | CN1174448A Variable-speed control method and apparatus for AC motor |
| 02/17/1998 | US5719482 Process and device for field-oriented control of a polyphase machine |
| 02/11/1998 | EP0823776A1 Braking process for an electric motor and device for performing |
| 02/10/1998 | US5717305 Method and apparatus for starting an electric motor |
| 01/28/1998 | CN1037221C Inverter control method and apparatus |
| 01/22/1998 | WO1998002958A2 Method and apparatus for controlling an induction motor |
| 01/07/1998 | EP0771067B1 Method and device for driving a rotating field machine by controlling the field orientation |
| 12/31/1997 | CN1169056A Variable speed controller for AC motor |
| 12/23/1997 | US5701066 Control system for an induction motor |
| 12/23/1997 | US5701065 Method and apparatus for controlling synchronous motor |
| 12/16/1997 | US5698823 Elevator control system |
| 12/10/1997 | EP0812059A1 Control process for a rotary machine, servosystem for carrying out this process and rotary machine with such a system |
| 12/06/1997 | CA2208008A1 Process for mechanical control of a rotating machine, system of control for operating the said process, rotating machine equipped with such a system |
| 12/02/1997 | US5694017 Time delay compressed synchronous frame controller |
| 11/26/1997 | CN1166086A Vector control method and vector control inverter of motor |
| 11/18/1997 | US5689170 Fail-safe control apparatus for electric vehicle driving motor |
| 11/18/1997 | US5689169 Transient inductance identifier for motor control |
| 11/18/1997 | US5689166 Method and apparatus for controlling hybrid excitation type permanent magnet synchronous motor |
| 11/06/1997 | WO1997041634A1 Method for controlling current of ac servo motor |
| 11/05/1997 | CN1164144A Method and equipment for controlling converter |
| 10/29/1997 | CN1163510A Method and apparatus for controlling invertor |
| 10/15/1997 | EP0800951A1 Power output apparatus and method of controlling the same |
| 10/14/1997 | US5677606 Device and method for detecting unbalanced condition in a load driven by a motor |
| 10/01/1997 | EP0798848A1 Current control method of servomotor |
| 09/25/1997 | DE19612988A1 Determining the flux space vector position in coordinate system relative to stator for determining switching conditions for pulse inverter of induction motor |
| 09/23/1997 | US5670854 Control system for an induction motor |
| 09/16/1997 | US5668459 Apparatus for generating magnetic flux of induction motor |
| 09/03/1997 | EP0793338A1 Method for controlling current of servomotor |
| 08/28/1997 | DE19635235C1 Current control method e.g. for Simovert master drives VC |
| 08/20/1997 | EP0790701A2 Apparatus and method for controlling torque of induction motor through vector control type inverter |
| 08/19/1997 | US5659235 Drive controller and control method for electric vehicle |
| 08/12/1997 | US5656911 Circuit for driving permanent-magnet synchronous motor using proportional controller |
| 08/05/1997 | US5654624 Method of starting an asynchronous machine |
| 07/29/1997 | US5652495 Controller for permanent magnet synchronous motor |
| 07/22/1997 | US5650709 Variable speed AC motor drive for treadmill |
| 07/22/1997 | US5650706 Control device for salient pole type permanent magnet motor |
| 07/22/1997 | US5650700 Electric vehicle torque controller |
| 07/16/1997 | EP0784378A2 Method for determining the absolute rotor position of in field controlled synchronous machines and device for carrying out this method |
| 07/10/1997 | WO1997024796A1 Compensated field-orientated control (kfo) |
| 07/09/1997 | EP0689733B1 A method for determining a stator flux estimate for an asynchronous machine |
| 07/03/1997 | DE19618723A1 Compensated field-oriented regulation method e.g for three=phase current async/sync machine |
| 07/01/1997 | US5644206 Control unit for induction motor |
| 06/25/1997 | EP0780967A2 Speed sensorless hybrid vector controlled induction motor with zero speed operation |
| 06/25/1997 | EP0756778A4 Method and apparatus for controlling induction motors |
| 06/12/1997 | WO1997021269A1 Method for the field-oriented control of an induction motor |
| 06/12/1997 | DE19545709A1 Verfahren zum feldorientierten Steuern eines Induktionsmotors A method for field-oriented control of an induction motor |
| 05/20/1997 | US5631819 Power converter |
| 05/13/1997 | US5629597 Control unit for induction motor and control method therefor |
| 05/07/1997 | DE19644433A1 Control equipment for electric vehicle power converter |
| 05/02/1997 | EP0771067A1 Method and device for driving a rotating field machine by controlling the field orientation |
| 05/02/1997 | EP0770282A1 Direct a.c. converter |
| 04/30/1997 | DE19539711A1 Field-oriented regulation method for electric induction motor or generator |
| 04/30/1997 | CN1148753A Controlling system for permanent-magnet synchronous electric motor |
| 04/22/1997 | US5623190 Method and apparatus for controlling an AC motor and detecting malfunctions |
| 04/08/1997 | US5619435 Method and apparatus for simulating the behavior and operation of a three-phase induction machine |
| 04/08/1997 | US5619114 Signal averager for use with motor controller |
| 03/27/1997 | WO1997011525A1 Current control method of servomotor |
| 03/27/1997 | DE19535286A1 Async. machine tilt detection method for drive system |
| 03/20/1997 | WO1997010643A1 Method for controlling current of servomotor |
| 03/13/1997 | DE19636784A1 Control device for permanent magnet synchronous motor |
| 03/11/1997 | US5610485 Method for controlling the torque of an asynchronous machine |
| 03/06/1997 | WO1997008820A1 Process and device for correcting the flow direction of the model flow of a sensor-free, field-oriented rotating magnetic field machine down to zero frequency |
| 03/06/1997 | WO1997008819A1 Method and device for determining the rotational speed of a field-orientedly-driven (no pickup) rotary-field machine |
| 03/06/1997 | WO1997008814A1 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 |
| 03/06/1997 | DE19532149A1 Verfahren und Vorrichtung zur Korrektur einer Flußrichtung eines Modellflusses einer geberlosen, feldorientiert betriebenen Drehfeldmaschine bis zur Frequenz Null Method and apparatus for correcting a flow direction of a flow model of a sensorless, field-oriented induction machine down to zero frequency |
| 03/06/1997 | DE19532142A1 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 |
| 03/06/1997 | DE19531771A1 Verfahren und Vorrichtung zur Bestimmung einer Drehzahl einer geberlosen, feldorientiert betriebenen Drehfeldmaschine Method and apparatus for determining a rotational speed of a sensorless, field-oriented induction machine |
| 03/04/1997 | US5608302 Apparatus for driving an AC motor at variable speeds |
| 02/26/1997 | EP0759225A1 Corrector, device and method for controlling electromagnetic torque in an asynchronous machine |
| 02/26/1997 | EP0759224A1 Method for controlling the power to be transferred via a mains inverter |
| 02/26/1997 | CN1143856A Apparatus for generating magnetic flux of induction motor |
| 02/05/1997 | EP0757432A2 Starting of synchronous machine without rotor position of speed measurement |
| 02/05/1997 | EP0756778A1 Method and apparatus for controlling induction motors |
| 01/29/1997 | EP0711471B1 Process and device for compensating a fault voltage at a pulse-controlled inverter |
| 01/28/1997 | US5598081 Vector control method for controlling a rotor speed of an induction motor |
| 01/23/1997 | WO1997002651A1 Sensorless field-orientation control of an induction motor |