Phase Locked Loop for controlling inverter interfaced with grid connected solar PV system

Abstract

In this article, a grid tied PV conversion topology which is synchronized to the grid using PLL. Initially, photovoltaic module is designed and analyzed using different parameters like irradiation, temperature, and series current. Proposed Enhanced PLL enables faster synchronization during inverter start-up. It is used in high power master-slave based centralized inverters which are being used in large PV power plant. All the solar cell, MPPT, boost converter, the inverter and the phase locked loop are modeled using SimPower Systems blocks and simulated in MATLAB/SIMULINK