MODELING AND DIRECT TORQUE CONTROL OF INDUCTION MOTOR BY USING FUZZY LOGIC CONTROL TECHNIQUE

Abstract

In this paper fuzzy rule based field oriented speed controlling of induction motor is proposed. The proposed speed controller estimate the suitable inputs in terms of logic variables to control the system. The speed of the motor is controlled by controlling the electromagnetic torque. To control the electromagnetic torque actual torque and change in torque is possess through fuzzy logic controller (FLC) this will generates the controlled electromagnetic torque witch is proportional to the speed of the motor. The proposed direct torque controller (DTC) improves the transient performance of induction motor with potential features. The entire proposed system is designed and tested under MATLAB/SIMULINK environment and simulation results also presented. And also the proposed fuzzy logic controller (FLC) performance is compared with the conventional Proportional-Integral (PI) controller performance to demonstrate the attractive performance of the proposed fuzzy logic controller.