THD analysis of single phase and three phase modular MLI with RL-load

The important features of modular multilevel inverters(MMLIs) are lower power dissipations in the switches, low harmonic contents, modularity and outputs with lower electromagnetic interference (EMI). The MMLI discussed is based on the half-bridge topology. A comparative study of two level VSI and 3, 5 level MMLI is discussed in the context of their total harmonic distortion in simulink models.