Self-Balanced Switched Capacitor Based 7-Level Multilevel Inverter with Triple Voltage Gain and Reduced Switching Components

In this article, a new 7-level boost Multilevel Inverter (MLI) is explained. It involves the use of self-balanced switched capacitors. Compared to other inverter topologies, it has less number of switching components. Moreover, the power switches have low stress which adds to the distinct features of the proposed MLI. The simulation analysis along with the experimental verification has been done in order to test the proposed circuit in different conditions. MATLAB software is used for doing simulation whereas the experimental results have been taken by using a laboratory prototype. Along with this, the loss analysis of the proposed MLI has been done, which comprises of the details of the losses occurring in the power electronic switches. The results of the loss analysis has been presented and explained in the paper. PLECS software is used for carrying out the power loss analysis. The high frequency level-shifted pulse width modulation (PWM) technique has been used for generating switching signals. A comparative study has been provided to understand the superiority of the MLI discussed in this paper.