Simulation and Analysis of a Grid Connected Multi-level Converter Topologies and their Comparison

Abstract

This paper presents simulation and analysis of a grid connected multi-level converter topologies. In this paper, converter circuit works as an inverter by controlling the switching angle (α). This paper, presents a MATLAB/SIMULINK model of multi-level converter topologies (topology1 & topology2). Topology1 is without transformer while topology2 with transformer. Both the topologies are simulated and analyzed for three level converters in order to reduce the total harmonic distortion (THD). A comparative study of topology1 and topology2 is also presented in this paper for different switching angles (α) and battery voltages. The results have been tabulated and discussed.

Keywords

• Total harmonic distortion (THD)
• Multi-level converter
• Grid connected inverter