MODELING AND SIMULATION OF VECTOR-CONTROLLED INDUCTION MOTOR DRIVE SYSTEM

Abstract

Vector control, also known as field-oriented control, has become a widely adopted technique for achieving high-performance control of induction motor drives. By decoupling torque and flux components, vector control enables dynamic behavior similar to that of a separately excited DC motor while retaining the robustness and reliability of induction machines. This paper presents the modeling and simulation of a vector-controlled induction motor drive system using a comprehensive simulation framework. A detailed mathematical model of the induction motor is developed in a rotating reference frame and integrated with a voltage source inverter and vector control algorithm. The control system includes current regulation, speed control, and coordinate transformations to ensure precise torque and flux control. MATLAB/Simulink is used to implement the complete drive system and evaluate its dynamic performance under various operating conditions such as startup, load disturbances, and speed variations. Simulation results demonstrate effective decoupling of control variables, fast transient response, and improved speed and torque regulation. The study confirms that vector control significantly enhances the dynamic performance and efficiency of induction motor drives, making it suitable for high-performance industrial and variable-speed applications