The PV inverter is one of the two major components of PV power plants, the main function of a PV inverter is to track the maximum power output of PV array, and connect energy to the grid with minimum energy consumption and maximum power quality..Since the inverter is connected in series between the PV arrays and the grid, the choice of inverter is critical to ensure the long-term reliable operation of PV power plant and expected ROI, thus, it should be “scientifically designed according to local conditions”.We advocate the intelligent PV power plant design concept of“safer, more intelligent, more efficient”, according to different environmental conditions of installation.