A novel single phase five-level photovoltaic based grid-connected inverter

This paper presents a novel single-phase five-level inverter topology. It features a small number of component counts with low voltage stress across the power switches. Hence, increasing the reliability which is an issue for multilevel inverter. A detailed study of the proposed topology and its switching technique is outlined. The switching technique is specifically derived for the proposed topology. Suitable selection of switching pulse width and taping level ensures THD is around 16.48% (in output voltage) for proposed five-level inverter. The viability of proposed topology is validated through simulation.