Photovoltaic grid simulation and harmonic analysis

According to requirements of power quality and other indicators of every single online unit of the photovoltaic system and the fact that more electric harmonic are generated in the process of photovoltaic grid inverter operation. This paper designs a simple photovoltaic grid system through computer technology and modern control techniques. The process of photovoltaic (pv) grid is simulated in the Matlab/Simulink platform. On the basis of the simulation platform, LCL filter is designed, which finally reached the expected effect of the power quality.