Algorithm for asymmetric source configuration in a newly constructed multistring multilevel inverter topology

This paper proposes an algorithm to configure asymmetric sources for a recently proposed topology for multilevel inverters. Since the topology proposed by Vi-Hung Liao et. al is incapable of synthesising all additive and subtractive combinations of input DC levels (as happens in cascaded H-bridge inverter), various popular asymmetric configurations cannot be employed for it. The proposed algorithm is described in detail and it is shown that it helps to synthesise multilevel waveform with equal sized steps.