Performance of Induction Motor Drive by Indirect Vector Controlled Method using Fuzzy Logic Approach

The objective of the paper is to provide the precise solution for speed control of three phase induction motor for high speed variable speed drives. The performance of indirect vector control induction motor drive is enhanced using different controller & comparative performance has been presented & analyzed in this work. The proposed work includes a voltage source PWM inverter-fed indirect vector control system of induction motor. Traditional indirect vector control system of induction motor introduces conventional PI regulator in outer speed loop. Because of the simplicity and stability, it is proven that the low precision of the speed regulator debases the performance of the whole system. To overcome this problem, replacement of PI controller by an intelligent Controller based on fuzzy set theory is proposed. The Fuzzy logic controller provides an effective solution for achieving better performance compared to PI controller. The performance of the intelligent controller is designed and simulated through digital simulation using MATLAB-SIMULINK under varying operating conditions. The simulation results demonstrate that the performance of the proposed controller is better than that of the conventional PI controller.