说明：  本文件是光伏并网仿真的一个不错的仿真模型，很好的满足了光复模型，逆变器模型以及主电路模型的建立，适用于初学者的学习。
(This document is a good simulation model for PV grid-connected simulation. It satisfies the establishment of the photo-compact model, the inverter model and the main circuit model, and is suitable for beginners to learn.)