TY - GEN
T1 - Seamless Mode Transfer Control Strategy of Two-stage Energy Storage Converter under Time-sharing Operation Mode
AU - Zhang, Xiao
AU - Bai, Yueqian
AU - Wen, Ya
AU - Wang, Zhenxiong
AU - Yi, Hao
AU - Zhuo, Fang
N1 - Publisher Copyright:
© 2023 The Korean Institute of Power Electronics.
PY - 2023
Y1 - 2023
N2 - The technology of energy storage has attracted more and more attention, where the two-stage energy storage converter is flexible and can be utilized to realize power quality improvement in grid-connected mode and provide emergency power supply in off-grid mode. Under the most of existing control strategies, the battery must keep working in both modes to balance the power flow, leading to battery life reduction. To solve above-mentioned problem, a timesharing operation mode is proposed in this paper. However, it is difficult for converter to achieve a seamless transfer between grid-connected and off-grid mode, because both the front-stage DC/DC converter and the battery are in a standby state. Therefore, an improved mode transfer strategy under time-sharing operation mode is further proposed to solve this issue. Finally, a prototype of the energy storage converter is developed, and the effectiveness of the control strategy is verified by simulation and experiment results.
AB - The technology of energy storage has attracted more and more attention, where the two-stage energy storage converter is flexible and can be utilized to realize power quality improvement in grid-connected mode and provide emergency power supply in off-grid mode. Under the most of existing control strategies, the battery must keep working in both modes to balance the power flow, leading to battery life reduction. To solve above-mentioned problem, a timesharing operation mode is proposed in this paper. However, it is difficult for converter to achieve a seamless transfer between grid-connected and off-grid mode, because both the front-stage DC/DC converter and the battery are in a standby state. Therefore, an improved mode transfer strategy under time-sharing operation mode is further proposed to solve this issue. Finally, a prototype of the energy storage converter is developed, and the effectiveness of the control strategy is verified by simulation and experiment results.
KW - Time-sharing operation mode
KW - energy storage technology
KW - seamless mode transfer
KW - two-stage converter
UR - https://www.scopus.com/pages/publications/85170641455
U2 - 10.23919/ICPE2023-ECCEAsia54778.2023.10213605
DO - 10.23919/ICPE2023-ECCEAsia54778.2023.10213605
M3 - 会议稿件
AN - SCOPUS:85170641455
T3 - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics
SP - 1378
EP - 1383
BT - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia
Y2 - 22 May 2023 through 25 May 2023
ER -