Abstract:Taking photovoltaic array power generation, lithium battery energy storage, DC load and grid-side converter as the research objects, the whole system was divided into 6 working modes, and the coordinated control strategy of the microgrid was studied through the conversion operation of different working modes. The lithium battery was divided into two groups. In order to improve the efficiency of the battery and the whole system and optimize the working characteristics of the battery, the idea of energy balance was introduced, and the energy balance algorithm was combined with the droop control based on the state of charge value, which helped to achieve power balance of two groups of lithium batteries. The simulation model of the system was built using Matlab/Simulink software. The change of system operation was realized by changing the size of load power. The simulation results show that the DC bus voltage keeps constant, the power balance of the entire system is realized, and the feasibility of the coordinated control strategy of the system is verified.
标题：基于改进下垂控制的直流微网运行研究
title:Research on DC Microgrid Operation Based on Improved Droop Control
作者：李靖, 王志和, 倪浩
authors:Jing LI, Zhihe WANG, Hao NI
