A New Single Source Five-Level Common Ground Switched Capacitor based Inverter

Abstract

This paper proposes a five-level inverter. The proposed multilevel inverter is based on Switched Capacitor (SC) circuits. The charged capacitors act as a virtual dc link in the negative half-cycle. This feature leads to using a single dc source. Additionally, the proposed Multilevel Inverter (MLI) benefits from the common ground feature. The leakage current is eliminated fully in this structure which is of great importance in transformer-less systems. The proposed MLI is described comprehensively. The operational modes are discussed. The correct operation of the proposed structure is confirmed by MATLAB/Simulink.