Design and Analysis of Grid Connected ZSI under Non-Linear Load with PV Applications

V Rajesh, Samala Bruhath, Mohamed Azharudeen, R Ramani, M Sudheesh, B Vishnu, Vardhan Reddy
2015 International Journal of Electric Power and Energy   unpublished
The voltage-fed Z-source inverter with battery operation (ZSI) has been presented suitable for photovoltaic (PV) Applications mainly because of its single-stage buck and boost capability and improved reliability. This paper further address an impact of nonlinear loads on PV connected distribution system. Minimum switching stress on devices can be achieved by choosing a proper capacitor voltage reference. Two strategies are proposed with the related design principles to control the new
more » ... red ZSI when applied to the PV power system. They can control the inverter output power, track the PV panel's maximum power point, and manage the battery power, simultaneously. The voltage boost and inversion, and energy storage are integrated in a single-stage inverter. Simulations results are carried out with the help of Matlab/simulink software. Experimental results are presented for validation of the theoretical analysis and controller design.