Synchronization and harmonic reduction of a grid-connected photovoltaic generation system

For a grid connected solar photovoltaic power system, synchronization in between generated voltage and grid voltage plays a pivotal role. This paper deals with modeling and synchronization in high voltage grid connected photovoltaic (PV) generation system. The proposed configuration not only can generate and boost up the DC voltage, but can also convert the solar DC power into high quality AC power by means of PWM inverter for feeding into the grid. Further a double-tuned harmonic filter has been established here for power quality improvement. Simulation and experimental results are shown for voltage and current during synchronization mode to validate the methodology for grid connection of renewable resources. The total system is modeled using Sim-Power System blocks in MATLAB/SIMULINK environment.