NDLI: Speed sensorless torque and flux control of induction motor

Content Provider	IEEE Xplore Digital Library
Author	Jezernik, K. Edelbaher, G.
Copyright Year	2003
Description	Author affiliation: Maribor Univ., Slovenia (Jezernik, K.)
Abstract	Due to its rigidness, maintenance free operation and many other advantages, the squirrel cage induction motor is the most widely used electrical motor in industrial applications. However, due to its highly coupled nonlinear structure it has certain limitations in sensorless applications in servodrives. This is due to the fact that the currently used control schemes like field oriented or direct torque control, errors occur due to the parameters variation, integral drift and noise. Those errors can be overcome with the use of the advanced parameter estimators and observers, however the speed sensorless operation, especially in the low speed region still presents a problem. Novel induction motor speed sensorless torque control is proposed. The control is quite different than the conventional field-oriented or direct torque control. First, the produced torque is explicitly continuous output variable of control. Second, a new rotor flux observer, which allows speed sensorless operation of IM by low and zero speed, was developed. A new stator and rotor flux controller/observer based on continuous sliding mode and Lyapunov theory are developed. The reference tracking performance of torque and rotor flux is demonstrated in series of transient characteristics by simulation and experimental results.
Sponsorship	Ind. Electron. Soc. IEEE COPPE-Federal Univ. of Rio de Janeiro
Starting Page	240
Ending Page	245
File Size	523124
Page Count	6
File Format	PDF
ISBN	0780379128
DOI	10.1109/ISIE.2003.1267252
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-06-09
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque control Sensorless control Induction motors Sliding mode control Servomotors Couplings Error correction Parameter estimation Rotors Stators
Content Type	Text
Resource Type	Article

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