Overview of connection topologies for grid-connected PV systems

This paper presents an overview of grid connected Photovoltaic (PV) systems and their inverters. First, the components of the PV systems and recent research activities regarding these components are discussed. Then, a PV array model, based on the Shockley diode equation, is introduced and a typical 60 W solar panel is modeled with Matlab script file using important solar characteristics in relations to temperature and irradiance and how the open circuit voltage is affected are depicted. Moreover, the connection topologies of PV systems are explored. Finally, standards to design and installation practices of grid connected PV systems are explained.