Simulation study of V/f control for a three-phase induction motor drive

Abstract

This study discusses the performance of the three-phase induction motor drive system using the voltage-frequency (V/f) control method. A simulation model was established using MATLAB/Simulink to analyze the behavior of the system under start-up, steady-state and load disturbance conditions. The results show that V/f control can achieve acceptable steady-state speed tracking, and the current waveform is stable and the harmonic distortion is low. However, due to the open-loop structure, there is still a steady-state speed error. In addition, the dynamic performance of the system is limited, and obvious torque oscillation and speed deviation will occur during load disturbance. In general, V/f control provides a simple and effective solution for basic motor drive applications, but its limitations in accuracy and dynamic response indicate the need for a more advanced control strategy.