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Adaptive sliding-mode observer for speed-sensorless control of induction motors

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3 Author(s)
Tursini, M. ; Dept. of Electr. Eng., Univ. of L''Aquila, Italy ; Petrella, R. ; Parasiliti, F.

This paper presents an adaptive sliding-mode observer for the speed-sensorless field-oriented control of induction motors. The observer detects the rotor flux components in the two-phase stationary reference frame by the motor electrical equations. The motor speed is estimated by an additional relation obtained by a Lyapunov function. The analytical development of the sliding observer and the speed estimation algorithm is fully explained. Experimental results are presented, based on a TMS320F240 digital signal processor controller implementation. The system performance with different observer gains and the influence of the motor parameters deviations are shown and discussed

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Industry Applications, IEEE Transactions on  (Volume:36 ,  Issue: 5 )