Speed sensorless vector control of induction machines

Shirsavar, S. A. and McCulloch, M. (1996) Speed sensorless vector control of induction machines. In: Canadian Conference on Electrical and Computer Engineering, 26-29 May 1996, Calgary, Canada, pp. 599-602. doi: 10.1109/CCECE.1996.548224

Abstract/Summary

A novel rotor velocity estimation scheme applicable to vector controlled induction motors has been described. The proposed method will evaluate rotor velocity, ωr, on-line, does not require any extra transducers or injection of any signals, nor does it employ complicated algorithms such as MRAS or Kalman filters. Furthermore, the new scheme will operate at all velocities including zero with very little error. The procedure employs motor model equations, however all differential and integral terms have been eliminated giving a very fast, low-cost, effective and practical alternative to the current available methods. Simulation results verify the operation of the scheme under ideal and PWM conditions.