Design and Analysis of a Three-Phase Inverter-Driven Induction Motor with PWM Control in MATLAB

This study focuses on the development and simulation of a three-phase induction motor drive system powered by a Pulse Width Modulated (PWM) inverter, using MATLAB as the modeling platform. Induction motors are commonly employed across various industrial sectors due to their durability, cost-effectiveness, and low maintenance. However, efficient control of motor speed and torque is vital for optimizing performance and energy usage. To address this, a voltage source inverter (VSI) is modeled and controlled through sinusoidal PWM techniques, enabling flexible and precise motor control by varying supply voltage and frequency. The switching signals for the inverter are generated by comparing a reference sine wave with a high-frequency triangular waveform, ensuring smooth voltage transitions and reduced harmonics. The induction motor is simulated using the d-q axis transformation method, allowing for detailed analysis of dynamic characteristics. Simulation results confirm that PWM control significantly improves the system's efficiency, stability, and responsiveness under different operational conditions. The proposed model demonstrates how inverter-based control can enhance the overall performance of induction motor drives in practical applications.