说明：  光伏电池下垂控制，不是很全面，以便参考。有资料分享下，小弟也在做光伏电池的仿真学习，谢谢各位。
(Photovoltaic cells droop control, is not very comprehensive, easy reference. There is information sharing, the younger brother is also doing a simulation study of photovoltaic cells, thank you.)