Research on voltage control of DC microgrid based on fuzzy droop control
Chen Shuquan1, 2, Zhang Zhaoyun1, Li Tianli2
1. School of Electronic Engineering, Dongguan University of Technology, Dongguan, Guangdong 523000; 2. College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, Guangdong 518060
Abstract：With the popularization of electric vehicles and the widespread use of DC charging piles, the stable operation of DC micro-grid appears extremely critical. In the DC micro-grid, when the distributed power output or the load changes suddenly, the appropriate control strategy can effectively reduce the bus voltage fluctuation and maintain the power balance of the system. This paper proposes a fuzzy droop control strategy for wind-solar storage DC micro-grid with battery as the main control unit. This strategy takes the DC bus voltage deviation and the battery state of charge (SOC) as inputs, and obtains the droop coefficient through fuzzy droop control. Finally, a model was built in the Matlab/Simulink simulation platform and compared with the droop control with feedforward. The obtained results show that the method proposed in this paper is superior to the latter in terms of overshoot and adjustment time.
陈树泉, 张兆云, 李天利. 基于模糊下垂控制的直流微电网电压稳定控制研究[J]. 电气技术, 2020, 21(8): 40-45.
Chen Shuquan, Zhang Zhaoyun, Li Tianli. Research on voltage control of DC microgrid based on fuzzy droop control. Electrical Engineering, 2020, 21(8): 40-45.
2020, Vol. 21 
