5-level cascade H bridge multilevel inverter fed induction motor drive using sinusoidal PWM

Inverter have a many variety of application ranging from simple converting of battery power to ac to high power HVDC transmission of electricity for a long distance. To avoid damage variable frequency drives used on large scale worldwide, make inverter very important device. This paper proposes a simple simulation model of three-phase conventional inverter used for speed control of induction motor (two-level) and cascade H-bridge multilevel inverter(five-level) used for speed control of induction motor (closed loop) using sinusoidal PWM. Hardware implementation of above mention topology is done and compare simulation results and hardware results.