THD analysis of cascaded H-bridge multi-level inverter

The traditional inverters have the drawbacks of Harmonics as well as Total Harmonic Distortion (THD). The analysis of THD and harmonics are studied in this paper by using MATLAB simulation. The cascaded H-bridge multi-level inverter configuration is used. The used configurations contain less number of switches and produce lesser harmonics in the output voltage. The harmonics and THD at the output of cascaded H-bridge inverter of different levels i.e., three-level, five-level, seven-level, nine-level and eleven-level are studied and compared. The cascaded H-bridge multi-level inverter topology quashes the THD and harmonics.