SOP TRANSACTIONS ON POWER TRANSMISSION AND SMART GRID In Press SOP TRANSACTIONS ON POWER TRANSMISSION AND SMART GRID A Fuzzy V/F Control for High Performance Induction Motors Drive

The constant Voltage-Frequency ratio (V/F) scalar control method is widely used in industries as speed control method for three-phase Induction Motors Drive (IMD). This paper presents an implementation of fuzzy logic-based controller (FLC) to improve the performance of V/F control for three-phase IMD. The Mamdani FLC is designed with the help of MATLAB/Simulink with two inputs, one output and 49 rules. The two inputs of the FLC are the error and change in error. The output is the frequency correction which is provided to a voltage source PWM inverter-fed. Each input and output function is defined by five triangular and two trapezoidal membership functions and Centroid defuzzification method is applied. As well as an adaptive fuzzy PI controller (AFPIC) is presented, where the PI parameters are adjusted by fuzzy rules. The dynamic performance of the proposed system and the AFPIC are compared with the previous work using conventional PI controller under different operating conditions. The simulation results show the superiority and robustness of the proposed system and the AFPIC in controlling three phase induction motor with V/F control over wide range of operating conditions. Keywords