Research on the energy storage system of direct bus based on retired batteries
ZHANG Hua1, SU Xueneng1, MA Linsen2, WAN Chengkuan2
1. Electric Power Research Institute of State Grid Sichuan Electric Power Co., Ltd, Chengdu 610000; 2. Chengdu Star-River Technological Industrial Co., Ltd, Chengdu 610041
Abstract:Due to the capacity and cost of DC-DC module and battery management system (BMS), the application of traditional energy storage system in DC distribution network is limited. Thus, a scheme of energy storage system without DC-DC and BMS is proposed to reduce the cost of energy storage. The output voltage of the energy storage system changes as the fluctuation of DC distribution network voltage. By controlling the state of battery module switch, the output voltage of the energy storage battery could be adjusted to charge or discharge the energy storage battery. Furthermore, the automatic regulation function of DC distribution network voltage is realized by controlling the state of battery module switch. Finally, Matlab/Simulink simulation and experiment show that when the DC distribution network voltage changes suddenly, the energy storage battery system can realize the charging and discharging function.
张华, 苏学能, 马林森, 万承宽. 基于退役电池的直挂母线式储能系统研究[J]. 电气技术, 2021, 22(6): 54-59.
ZHANG Hua, SU Xueneng, MA Linsen, WAN Chengkuan. Research on the energy storage system of direct bus based on retired batteries. Electrical Engineering, 2021, 22(6): 54-59.