Differential Evolution based Selective Harmonic Elimination of a New WE Type 13-Level Inverter

In this work the modulation of a new WE-type 13-level (WE-13) inverter based on selective harmonic elimination is presented. This single-phase inverter is capable of generating a 13-level boosted voltage waveform and belongs to asymmetrical multilevel inverters. It requires three voltage sources to attain these levels, out of which two sources can be capacitors. It requires only 11 IGBTs, which makes it one of a competitive 13-level topology. For its modulation selective harmonic elimination is employed. The angles of the switching are evaluated by employing metaheuristic Differential Evolution (DE) approach. The efficacy of the inverter and its modulation is proved by simulation and hardware in the loop emulation of the experimental setup in the Typhoon-HIL environment.