SINGLE PHASE THIRTEEN LEVEL INVERTER WITH REDUCED NUMBER OF SWITCHES USING DIFFERENT MODULATION TECHNIQUES

The main objective of proposal of this topology is to get the output with reduced Harmonics and to improve the efficiency with reduced number of switches. Multi-Level Inverter (MLI) Performance has been evaluated for three different modulation technique Trapezoidal pulse width modulation (TPWM), Sinusoidal Pulse width modulation (SPWM), 1/6 Third order Harmonic injection technique (1/6 THIPWM). The parameters Total Harmonic distortion (THD), Efficiency, power utilisation is compared for all three techniques using MATLAB/Simulink and to identify the best suitable modulation technique. Keyword: THD, inverter, voltage stress, conduction loss.