Analyzing the performance of Cascaded H-Bridge Multilevel Inverter with three phase multiwinding transformer and single phase supply

Abstract

A multi-level inverter type cascaded H-bridge design with a different harmonic reduction technique is provided. The proposed design includes the DC source, hybrid cascaded multilevel inverter, transformer and load circuit. For a hybrid, multi-level inverter, the 7-level stepped form of the wave is achieved similar to the sinus wave. The transformer supplies the seven-tier hybrid inverter with cascading into the load. The 5th and 7th harmonics were efficiently extracted with the algorithm from the line current. The simulation and research was carried out to show how the system proposed works. The observed harmonic detail results, the THD are approximately 12.27% only. The 3rd level harmonics magnitude is 5.2% and 5th level harmonics is only 8.2%. Simulation results from SIMULINK/MATLAB software and hardware experimental results are tabulated. The results are explained with graphically.