A new topology for multilevel inverter

Abstract

Single-Phase multilevel converters are suitable for medium power applications as photovoltaic systems and switched reluctance machines, whereas, three-phase inverters are widely used in industries for high power applications. A new single phase topology and its three-phase applications with reduced device count is proposed so that the complexity as well as the cost of the system gets reduced to a larger extent. A new control scheme known as, zero level control, is introduced to maintain the voltage of DC-link capacitors. Simulation results have also been presented to validate the proposed control scheme. © 2015 IEEE.