Sliding mode control for electrical drives

In this paper, the same Sliding Mode Controller with time-varying switching surface is applied to obtain a high precision positioning of the drive whatever the configuration of the linked electrical machine (dc motor, three-phase induction machine and six-phase induction machine). The proposed control scheme is insensitive to mechanical configuration variations and also fault tolerant (six-phase induction machine). The efficiency of the method is validated experimentally using a test bed built up in our laboratory.