Performance Comparison of PID and Fuzzy Control Techniques in Three Phase Induction Motor Control

The demand for control of electric power for electric motor drive system and industrial control exists since many years. Variable-speed drives are designed when a motor is combined with a power electronics converter. By introducing variable speed for the driven load, it is possible to optimize the efficiency of the entire system and this is the area where the maximum efficiency gains are possible. The closed loop control strategies employed are legion and PID is seemed to be superior amongst them. However it further needs to be improved in terms of overshoot and settling time. So control strategies based on soft computing could be good alternative. This paper describes the implementation of controllers based on PID and Fuzzy Logic strategies. A comparative performance analysis demonstrates that the clever exploring of Fuzzy Logic control strategies circumvents the demerits of PID control strategies.