Investigation on Photovoltaic System based Asymmetrical Multilevel Inverter for Harmonic Mitigation

The power quality improvement by multilevel inverters are gaining more response among the researchers in the recent trends for the low and medium power applications. The purpose of this research work is to integrate the solar PV system with the inverter and to investigate the performance of Asymmetric multilevel Inverter with various multi-carrier PWM schemes on harmonic mitigation. And the simulation study helps in analysis of various carrier-based modulation schemes along with the injection of third harmonics on the reference signal which efforts on harmonics mitigation. The simulation results and the hardware modelling along with basic design for implementation of three phase symmetrical Multilevel Inverter topology is carried out in this research work. MATLAB-Simulink software is used for the purpose of simulation in integration with digital controller for generation of high frequency pulses in order to reduce the harmonics level. This research paper concludes with simulation results on three phase symmetrical multilevel inverter.