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Sensorless sliding-mode control of induction motors

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3 Author(s)
Zhang Yan ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Changxi Jin ; Utkin, V.I.

This paper develops the ideas of speed- and flux-sensorless sliding-mode control for an induction motor illustrated in previous work by one of the authors. A sliding-mode observer/controller is proposed in this paper. The convergence of the nonlinear time-varying observer along with the asymptotic stability of the controller is analyzed. Pulsewidth modulation implementation using sliding-mode concepts is also discussed. Major attention is paid to torque control, and then the developed approach is utilized for speed control. Computer simulations and experiments have been carried out to test the proposed estimation and control algorithm. The experimental results demonstrated high efficiency of the proposed estimation and control method.

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Industrial Electronics, IEEE Transactions on  (Volume:47 ,  Issue: 6 )