مشخصات پژوهش

In this paper, an advanced configuration for multilevel voltage source inverters is proposed. The proposed topology can be used as symmetric and asymmetric inverter. In asymmetric mode, DC sources magnitudes are defined in a way that the number of output voltage levels gets more than the case when the symmetrical DC sources are applied. In this regard, to calculate the magnitudes of required DC voltage sources, several different solutions are proposed. In multilevel inverters, the overall cost, circuit size and so installation area, complexity of control scheme and reliability are directly depended to the number of circuit devices needed. The provided comparison study among suggested inverter in all defined solutions, CHB and recently proposed converters, validates that the proposed modular inverter uses reduced number of circuit devices. The provided simulation and experimental results confirms the feasibility of the proposed structure and shows that the obtained results are in good agreements.