Performance Evaluation of Indirect Vector Controlled Induction Motor Sensorless Drive

This paper presents a hybrid system controller, incorporating fuzzy controller with vector control method for induction motors. The vector-control method has been optimized by using both PI and fuzzy controllers. This combines the benefits of fuzzy logic controller and vector-control in a single system controller. High quality of the regulation process is achieved through utilization of the fuzzy logic controller, while stability of the system during transient processes and a wide range of operation are assured through application of the vector control. This paper also deals with the speed estimators for applications in sensor less induction motor drive with vector control. In the present work, Indirect vector controlled induction motor sensor less drive with PI and Fuzzy controllers is implemented. It shows that the performance is better for fuzzy when compare to PI controller.