A comparative analysis on multilevel inverter with and without harmonics injection method

In this paper, a comparative analysis of with and without injecting the harmonics in switching techniques for multilevel inverter was carried out. The multilevel inverter are said to be the power converter systems where the by controlling the power semiconductor sources properly a controlled multistep voltage waveform will generate. The first approach on multilevel inverter is carried out in Simulink by taking the sink without harmonics injection. The second approach injecting the harmonics in the multilevel inverter. These both are compared on the basis of their quality improve in output voltage and also the total harmonic reduction. This paper aims to extend the well developed knowledge about the performance of harmonic analysis. Simulation result for with and without harmonic injection method was carried out using MATLAB/Simulink.