Identification of Suitable Modulation Scheme for Boosted output in ZSI

In order to obtain a sustainable alternative for the power generation in developing countries, grid coupled PV panels are the best solution which is widely preferred in developed countries. A PV module with a grid coupled inverter is embodied in an AC module. Transformer less single stage arrangements are highly efficient and preferred over different arrangements of an AC module. ZS I being one of such arrangements have seen a fast evolution since its first release in 2003, in which its different arrangements along with its control and modulation schemes are included. This paper work emphasizes on the performance of ZS I under three modulation techniques provided with constant input voltage and modulation index, and finally conclude with a suitable scheme to obtain high output voltage.