Performance Comparison of Hysteresis and Fuzzy based Hysteresis Current Controlled VSI Fed IM Drives

Nowadays various control strategies are used to control the Induction Motor(IM). Out of the all controllers Hysteresis Current Controller(HCC) is most popular and very easy to implement. In this paper, the comparison analysis has done between HCC and Fuzzy based HCC. The fuzzy logic controller has used along with the PI controller. The dynamic performance of speed and the ripple content is analyzed using HCC and Fuzzy based HCC. Matlab simulation has been used to get the results with two different strategies: Fixed band Hysteresis current control(FHCC) and Fuzzy based FHCC. The comparison between both the scheme has done in this paper. From the results, we can conclude that, the fuzzy-based HCC produce better result compare to FHCC, where the ripple content is reduced and gives better speed performance.