SLIDING MODE APPLICATION IN SPEED AND FLUX CONTROL OF AN INDUCTION MACHINE

Abstract

In this paper, a nonlinear control of squirrel induction motor is designed. We propose a sliding mode technique to control the field-oriented induction machine. Our aim is to make the speed and the flux control robust to parameter variations. The variation of motor parameters during operation degrades the performance of the controllers. The use of the nonlinear sliding mode method provides very good performance for motor operation and robustness of the control law despite the external/internal perturbation. Simulation results are given to highlight the performance of the proposed control technique under load disturbances and parameter uncertainties.