Simulation studies of PV fed Line Frequency Commutated 5-Level Inverter

Abstract

Power electronic converters are essential for harnessing the abundantly available solar energy. Power from the photovoltaic array can be fed to the ac load or utility grid through inverter which is capable of producing an ac voltage with less harmonics. A multilevel inverter is generally employed for this purpose at the cost of extra switches and control complexity. In this paper, a system is proposed to obtain a multilevel output by introducing a simple auxiliary circuit between the photovoltaic array and the line frequency commutated inverter. Simulation studies of the proposed system have been carried out using MATLAB/Simulink software and the results are presented in this paper.