SLIDING MODE SPEED AND FLUX CONTROL OF AN INDUCTION MACHINE

In this paper, a direct field-oriented induction motor drive with a sliding mode controller (SMC) is presented. The (SMC) technique finds its stronger justification in the utilization problem of a robust nonlinear control law to model uncertainties. The used control algorithm is sliding mode associated with a particular function "sat" to limit chattering effects that presents a serious problem to applications of variable structure systems. Simulation tests under load disturbances and parameter uncertainties are provided to evaluate the consistency and performance of the proposed control technique.