Study and implementation of synchronization algorithm in three phase grid connected PV system

This paper presents the study and simulation of synchronization algorithm for a three phase grid connected photovoltaic (PV) system. The synchronization algorithm employs synchronous reference frame based phase locked loop with a positive sequence detection. As compared to other methods, this algorithm provides a higher degree of immunity and insensitivity to noise and harmonic distortions. The maximum efficiency of the system may be achieved by overcoming the voltage unbalances and frequency distortion using this algorithm. The synchronization algorithm is studied by using a three phase parallel, 6 kilowatt load connected to three phase grid connected photovoltaic system.