A Novel Scheme for Integration of PV System with AC Grid

Abstract

This paper describes the integration of solar/photovoltaic system (PV) with an AC grid using a two stage configuration. Boost converter and voltage source converter (VSC) are the two stages of interface between PV module and grid. A PV module is implemented using 3-Diode model which is cascaded to the boost converter which amplifies PV output voltage to controlled dc link voltage. The boost converter output voltage is fed to a 3-phase VSC which converts this voltage into ac in order to be fed to the grid. To control the power fed to the grid, appropriate controllers are needed which have been designed based on k-factor.