A new cascaded multilevel inverter structure with less number of switches

Because of many features of multilevel inverters, its applications in industries are not negligible. This paper proposes a new topology for multilevel inverters that has been obtained from series blocks of sub multilevel inverter. One of the issues in this kind of inverters is quantity of switches. The proposed inverter consists of fewer number of power electronic switches which leads to lower switching loss, weight, and cost in comparison with conventional inverters. Another advantage of this structure is its modular capability. In this paper, three algorithms are considered to determine the size of DC voltage source and eventually accuracy of proposed inverter has been approved by PSCAD/EMTDC software.