Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 21 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
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)
01/1997
01/09/1997DE19524654A1 Verfahren zur geberlosen feldorientierten Regelung einer Asynchronmaschine A method for sensorless field-oriented control of an induction machine
01/02/1997EP0751613A1 Current controlling method for servo motor
01/02/1997EP0598921B1 Vector controller of induction motor
12/1996
12/31/1996US5589754 Method for determining a stator flux estimate for an asynchronous machine
12/25/1996CN1138776A Elevator controlling unit
12/17/1996US5585709 Method and apparatus for transducerless position and velocity estimation in drives for AC machines
12/17/1996US5585708 Four quadrant motor controller minimizing distortion index
12/05/1996DE19620849A1 Control circuit for brushless DC motor e.g. for robot drive
12/05/1996DE19618492A1 Device for generating magnetic flux in induction motors
12/04/1996EP0746091A1 Method to compute in real time a model of an induction machine supplied by an inverter
12/04/1996EP0746089A1 Synchronous motor control system and method of controlling synchronous motor
12/04/1996EP0746088A1 Synchronous motor control system
12/03/1996US5580585 Hydraulic operational system for an injection molding machine
11/1996
11/27/1996EP0653116B1 A method of determining a residual flux of an inverter-supplied squirrel cage induction machine
11/21/1996DE19518214A1 Floor treatment device for scrubbing, cleaning and=or polishing
11/20/1996EP0743745A2 Controlling apparatus for induction motor
10/1996
10/30/1996EP0739457A1 Process and device for controlling an electric induction machine with a special winding for simultaneously generating a torque and a transverse force therein
10/24/1996DE19615199A1 Control unit for inverter-fed induction motor
10/23/1996EP0739088A2 Method for according to the direct self-regulation operated induction machine
10/22/1996US5568034 Fault-tolerant variable speed induction motor drive
10/15/1996US5565752 Method and apparatus for transducerless position and velocity estimation in drives for AC machines
10/09/1996EP0736234A1 Method and apparatus for transducerless flux, position and velocity estimation in drives for ac machines
10/09/1996CN1032962C Apparatus for controlling speed of elevator
10/03/1996WO1996030995A1 Variable speed ac motor drive for treadmill
10/01/1996CA2101796C Vector control apparatus for induction motor
09/1996
09/24/1996US5559419 Motor drive system
09/19/1996WO1996028884A1 Corrector, device and method for controlling electromagnetic torque in an asynchronous machine
09/04/1996CN1032725C Apparatus for changing electric power of induction motor
08/1996
08/27/1996US5550450 Dead-time effect compensation for pulse-width modulated inverters and converters
08/22/1996DE19505506A1 Use of observer model for induction motor torque estimation
08/14/1996EP0726645A2 Control method and apparatus for AC motor
08/06/1996CA2044220C Procedure for the regulation of an asynchronous motor
08/01/1996DE19503658A1 Determn of variable for joltless connection of inverter to induction motor not using speed sensors
07/1996
07/31/1996CN1127954A Method and apparatus for controlling motor
07/30/1996US5541493 Method of controlling current for coil of synchronous motor
07/30/1996US5541488 Method and apparatus for controlling induction motors
07/16/1996US5537308 Digital current regulator
07/02/1996US5532571 Control apparatus for induction motor
07/02/1996US5532570 Variable speed control apparatus for induction motor
05/1996
05/28/1996US5521483 Method of determining a residual flux of an inverter-supplied squirrel cage/induction machine
05/15/1996EP0711471A1 Process and device for compensating a fault voltage at a pulse-controlled inverter
04/1996
04/24/1996EP0708521A1 Method and apparatus for the control of an electromotor
04/23/1996US5510689 Air gap flux measurement using stator third harmonic voltage
04/10/1996EP0705496A1 Multiphase induction motor
04/03/1996EP0704709A2 Process for determining the electrical parameters of asynchronous motors
04/02/1996US5504404 Method and apparatus for controlling motor
03/1996
03/26/1996US5502360 Stator resistance detector for use in electric motor controllers
03/14/1996DE4433551A1 Speed estimation method for inverter-fed speed-sensorless induction motor
03/14/1996DE19532477A1 Verfahren zum Anlassen einer Asynchronmaschine Method for starting an asynchronous
03/12/1996US5498945 Peak-torque-per-ampere (PTPA) control method for an induction motor
03/12/1996CA2017074C Frequency control based on sensing voltage fed to an induction motor
02/1996
02/22/1996DE4438779A1 Operation of DC link converter for induction machine if mains voltage drops temporarily
02/06/1996US5490056 Inverter apparatus having two control modes and apparatus using the same
01/1996
01/30/1996US5488280 Adaptive control of a multiphase induction motor having concentrated phase windings
01/25/1996WO1996002085A1 Direct a.c. converter
01/24/1996CN1115518A Inverter control method and apparatus
01/18/1996DE4426762C1 Asynchronous electric motor rotor flux regulation system
01/04/1996DE19519238A1 Oscillation damping in inverter-fed induction motor
01/03/1996EP0689733A1 A method for determining a stator flux estimate for an asynchronous machine
01/02/1996US5481173 Vector control system for induction motor
01/02/1996US5481172 Circuit for controlling power converting apparatus
01/02/1996US5481168 Electric vehicle torque controller
12/1995
12/26/1995US5479081 AC motor controller with voltage margin adjustment
12/19/1995US5476158 Rotor time constant adaptation for induction motor in vector controlled elevator drive
12/14/1995WO1995034125A1 A method for determining the rotational speed, magnitude and instantaneous direction of a flux
12/13/1995EP0579694B1 Process and circuits for determining machine-related electromagnetic and mechanical state variables on electrodynamic induction machines supplied via converters
12/12/1995US5475293 Method for measuring characteristic constants of alternating current motor and controller thereof based on said method
12/07/1995DE4418997A1 Control of stator current components for AC drive motor
11/1995
11/30/1995DE4418793A1 Induction motor control method
11/29/1995EP0413032B1 Method of controlling ac motor
11/28/1995US5471126 Slip frequency control method for induction motors
11/23/1995WO1995031857A1 Method for controlling the power to be transferred via a mains inverter
11/23/1995CA2189251A1 Method for controlling the power to be transferred via a mains inverter
11/14/1995US5467000 Method and apparatus for current regulating in a voltage-injecting converter
11/08/1995EP0383949B1 Current limiting system for a voltage-type inverter
11/08/1995CN1111189A Hydraulic transmiting system in projecting molding machine
11/02/1995WO1995029531A1 Multiphase induction motor
11/02/1995CA2164948A1 Multiphase induction motor
10/1995
10/31/1995US5463301 Vector controlling method and apparatus for induction motor
10/24/1995US5460244 Elevator control apparatus using parallel converters and inverters with means to control circulating current
10/19/1995WO1995028031A1 Method and apparatus for controlling induction motors
10/17/1995US5459386 Motor drive control apparatus having a plurality of motor characteristics
10/04/1995EP0675591A1 Brushless DC motor control circuit
09/1995
09/27/1995EP0674381A1 Torque regulation method of an asynchronous machine
09/20/1995EP0673110A1 Variable speed control apparatus for induction motor
09/05/1995US5448150 Vector control unit for an induction motor
08/1995
08/31/1995DE3844847C2 Controlling electromotor using frequency converter
08/29/1995US5446363 Method of controlling induction motor
08/10/1995DE19501375A1 Wechselrichter-Steuerverfahren und -vorrichtung Inverter control method and apparatus
08/02/1995CN1106176A Vector controlling method and apparatus for induction motor
07/1995
07/13/1995WO1995018925A1 Process and device for controlling an electric induction machine with a special winding for simultaneously generating a torque and a transverse force therein
06/1995
06/29/1995WO1995017780A1 Method and apparatus for transducerless flux, position and velocity estimation in drives for ac machines
06/28/1995EP0660503A1 Method to control the absolute value of flux and torque of an induction machine
05/1995
05/17/1995EP0653116A1 A method of determining a residual flux of an inverter-supplied squirrel cage induction machine.
05/09/1995US5414333 Speed control apparatus for elevators using variable voltage and variable frequency control
04/1995
04/26/1995EP0649723A2 Hydraulic actuation system for injection moulding machines
03/1995
03/29/1995EP0645880A1 Variable speed driving apparatus for an AC motor
03/29/1995EP0645879A1 Vector control method for controlling a rotor speed of an induction motor
03/22/1995EP0644648A1 Control method and apparatus and malefunction detection method and apparatus for AC motor
03/21/1995US5400240 Power converter apparatus
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