  The Particle Swarm Optimized (PSO) fuzzy controller has been proposed for
indirect vector control of induction motor. In this proposed scheme a Neutral
Point Clamped (NPC) multilevel inverter is used and hysteresis current control
technique has been adopted for switching the IGBTs. A Mamdani type fuzzy
controller is used in place of conventional PI controller. To ensure better
performance of fuzzy controller all parameters such as membership functions,
normalizing and de-normalizing parameters are optimized using PSO. The
performance of proposed controller is investigated under various load and speed
conditions. The simulation results show its stability and robustness for high
performance derives applications.

Neural and Evolutionary Computing