New Sub-Module for Cascaded Multilevel Inverters with Reduced Switching Devices

Multilevel inverters are suitable option for changing DC power to AC power in medium-voltage and high-power applications. This work look for to present a new module featuring a low amount of devices for a multilevel converter with cascaded connection. The proposed module consists of a modified T-type topology and a half-bridge inverter that is back-to-back connected. The proposed circuit includes five dc voltage sources and nine semiconductor switches that generate 23 levels. To show the superiority of the proposed topology, a detailed comparison is made with other comparable multilevel converter topologies. Simulations in MATLAB/Simulink are shown to validate the behavior of the proposal.