Consensus-Based Control of Hybrid Energy Storage System With a Cascaded Multiport Converter in DC Microgrids

被引:37
|
作者
Wang, Benfei [1 ]
Wang, Yu [2 ]
Xu, Yan [2 ]
Zhang, Xinan [3 ]
Gooi, Hoay Beng [2 ]
Ukil, Abhisek [4 ]
Tan, Xiaojun [1 ]
机构
[1] Sun Yat Sen Univ, Sch Intelligent Syst Engn, Guangzhou 510275, Peoples R China
[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[3] Univ Western Australia, Sch Engn, Crawley, WA 6009, Australia
[4] Univ Auckland, Dept Elect Comp & Software Engn, Auckland 1142, New Zealand
关键词
Batteries; Supercapacitors; Microgrids; Voltage control; State of charge; Inductors; Hybrid energy storage system (HESS); multiport DC-DC converter; consensus control; microgrid; SECONDARY CONTROL; CONTROL STRATEGY; BATTERY; FEEDBACK; DESIGN;
D O I
10.1109/TSTE.2019.2956054
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This article presents a new consensus-based control method for hybrid energy storage system (HESS) with a cascaded multiport converter in the DC microgrid. The cascaded multiport converter has two stages, where the first stage is for the supercapacitor and the second stage is for the batteries. The two-stage structure can reduce the component rating of the second stage since the batteries are indirectly connected to the DC bus via the supercapacitor at the first stage. Additionally, the second stage with multiple ports is able to integrate multiple batteries. The HESS balances the power mismatch between the generation of the photovoltaics (PV) and the dissipation of the loads, as well as maintains the bus voltage of the DC microgrid. To solve the state-of-charge (SOC) imbalance of multiple batteries for the long lifespan of HESS, a consensus-based control method is developed in this paper to equalize the SOCs among multiple batteries. The consensus-based method can accommodate a varying number of batteries, which enables the plug-and-play operation. A hardware-in-loop (HIL) setup is adopted to implement the DC microgrid, including the HESS using the cascaded multiport converter and the PV. The HIL experimental results demonstrate the effectiveness of the proposed consensus-based control method.
引用
收藏
页码:2356 / 2366
页数:11
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