Performance Comparison of 5 and 7 Level Current Fed Inverter for Grid Integrated Solar Plant

Abstract

Power electronic converters were developed to integrate photovoltaic (PV) arrays with the utility grid. Inverters are essential for converting the direct current produced by PV arrays into alternating currents. Multilevel inverters have significant popularity in PV systems due to their numerous advantages over conventional inverters, particularly in high-power applications. One major benefit is the improvement in output waveforms, as multilevel inverters generate nearly sinusoidal voltage waveforms, resulting in lower total harmonic distortion. Additionally, these inverters experience reduced switching losses, and required the smaller LC filters. In this paper such as current-fed 5-level and 7-level inverters are realized by using Space vector pulse width modulation technique and compare the THD.