TY - JOUR
T1 - A Decentralized Automatic Load Power Allocation Strategy for Hybrid Energy Storage System
AU - Wang, Zhishuang
AU - Wang, Ping
AU - Jiang, Wentao
AU - Wang, Peng
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2021/9
Y1 - 2021/9
N2 - A decentralized improved I-V droop control strategy for battery-supercapacitor (SC) hybrid energy storage system (HESS) is proposed in this paper. The dynamic power sharing between battery and SC is realized by replacing the constant droop coefficient in I-V droop control with virtual impedance, i.e. virtual inductance for battery side converter and virtual resistance for SC side converter. Besides, by injecting the virtual inductance in the battery side converter, negligible DC bus voltage deviation can be achieved without extra voltage compensator. Moreover, the state-of-charge (SoC) recovery is also considered to extend the service life of the HESS. Furthermore, in the proposed regulated power system, since the power allocation, DC bus stability and SoC recovery are decoupled from each other, the design of control parameters is simple. The corresponding design guideline is demonstrated in this paper. Finally, to verify the accuracy and feasibility of the theoretical analyses, hardware in the loop simulations have been conducted.
AB - A decentralized improved I-V droop control strategy for battery-supercapacitor (SC) hybrid energy storage system (HESS) is proposed in this paper. The dynamic power sharing between battery and SC is realized by replacing the constant droop coefficient in I-V droop control with virtual impedance, i.e. virtual inductance for battery side converter and virtual resistance for SC side converter. Besides, by injecting the virtual inductance in the battery side converter, negligible DC bus voltage deviation can be achieved without extra voltage compensator. Moreover, the state-of-charge (SoC) recovery is also considered to extend the service life of the HESS. Furthermore, in the proposed regulated power system, since the power allocation, DC bus stability and SoC recovery are decoupled from each other, the design of control parameters is simple. The corresponding design guideline is demonstrated in this paper. Finally, to verify the accuracy and feasibility of the theoretical analyses, hardware in the loop simulations have been conducted.
KW - Hybrid energy storage system (HESS)
KW - I-V droop control
KW - power allocation
KW - state-of-charge (SoC) recovery
UR - http://www.scopus.com/inward/record.url?scp=85097136249&partnerID=8YFLogxK
U2 - 10.1109/TEC.2020.3038476
DO - 10.1109/TEC.2020.3038476
M3 - 文章
AN - SCOPUS:85097136249
SN - 0885-8969
VL - 36
SP - 2227
EP - 2238
JO - IEEE Transactions on Energy Conversion
JF - IEEE Transactions on Energy Conversion
IS - 3
M1 - 9261981
ER -