Abstract: “As industry applications are increasing day by day, Power Electronics is playing measure role for conversion of electrical energy. It helps in supplying the electrical system with reliable and effective power. This paper presents the performance analysis of Diode Clamped Multilevel Inverter for speed control of single-phase induction motor in open loop as well as in closed loop system. The speed is controlled by constant V/F control method. Speed is controlled over wide range by taking torque Constant. Using a closed-loop PI controller, the SPWM modulation technique is utilized to regulate the inverter's output and the motor's input. In that PD-SPWM technique is used to control the voltage magnitude and frequency of the output of Diode Clamped Multilevel Inverter (DCMLI).Simulation of open loop and closed loop model in software MATLAB/SIMULINK”

Keywords: Diode Clamped Multilevel Inverter, Induction Motor, PI Controller, PD-SPWM Introduction