A New Symmetric/Asymmetric Multilevel Inverter Based on Cascaded Connection of Sub-Multilevel Units Aiming less Switching Components and Total Blocked Voltage

Abstract

In this paper, a new multilevel inverter is designed to improve the power and voltage quality, which contains a lesser number of switches in the specified voltage levels. The proposed inverter includes power electronic devices such as switches and diode, and DC inputs. In the proposed structure the desired output voltage can be produced by considering a series connection of a novel sub-multilevel module. This structure can be designed in both the symmetric and asymmetric topologies. The proposed structure has superior condition in terms of semiconductor switches and drivers count as well as switching loss. Additionally, the Total Blocked Voltage (TBV) of the proposed converter is compared with the conventional and the novel converters. This topology is studied by symmetric as well as asymmetric topologies through simulations in Matlab/Simulink environment as well as experiments by a laboratory prototype.