Research on Bus Voltage Control Strategy of Off-grid DC Microgrid Yilonɡ Kanɡ, Ningkang Zheng, Xiangyang Yan, Huanruo Qi and Kai Li E3S Web Conf., 185 (2020) 01064 Published online: 01 September 2020 DOI: 10.1051/e3sconf/202018501064