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DSP-based minmax speed sensorless induction motor drive with sliding mode model-following speed controller

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3 Author(s)
Lin, F.-J. ; Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung Li, Taiwan ; Shyu, K.-K. ; Wai, R.-J.

A speed sensorless induction motor (IM) drive with a sliding mode model-following speed controller is introduced. First, the speed estimation algorithm, based on the minmax control theory, and its stability analysis are described. An integral-proportional (IP) speed controller using the estimated speed signal is designed to obtain the desired control performance of command tracking. Moreover, to increase the robustness of the IM drive, a sliding mode model-following controller is added, where the state-space equation of the nominal designed IP speed control loop is selected as the reference model. To increase the accuracy of the estimator, the speed estimation algorithm is implemented using a digital signal processor

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:146 ,  Issue: 5 )