Performance of sliding mode control for three phase induction motor

In this paper, sliding mode control (SMC) scheme is employ to three phase induction motor to replace the conventional PI speed control. Indirect field orientation control is used to ensure decoupling control between torque and flux of induction motor. This is realized by using Clarke and Park transformation. The performance of the purposed SMC with integral sliding surface is test under changes in Rs, RR, Ls, Lr and Lm, and load disturbances in different speed command. The results show that the SMC can give robust performance under parameter uncertainty and external load disturbances. The effectiveness of the purposed scheme is verifying using MATLAB/SIMULINK.