An Improved Virtual Impedance Droop Control of Three-Port Converter Interfaced Hybrid Energy Storage Systems

被引:0
|
作者
Liang, Sisi [1 ]
Wang, Xiaolin [1 ,2 ]
Ye, Yuanmao [1 ]
Ma, Yao [3 ]
机构
[1] Guangdong Univ Technol, Sch Automat, Guangzhou, Peoples R China
[2] Northeast Elect Power Univ, Minist Educ, Key Lab Modern Power Syst Simulat & Control & Ren, Jilin, Jilin, Peoples R China
[3] Hainan Power Grid Co Ltd, Hainan Elect Power Sch, Haikou, Hainan, Peoples R China
来源
2024 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS SYSTEMS AND APPLICATIONS, PESA 2024 | 2024年
关键词
Hybrid energy storage system; power allocation; droop control; virtual impedance design; DC-DC CONVERTER; FUEL-CELL-ULTRACAPACITOR; MANAGEMENT; BATTERY;
D O I
10.1109/PESA62148.2024.10594869
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The power allocation of hybrid energy storage system (HESS) is crucial for the development of hydrogen fuel cell vehicles (HFCVs). To improve the operational efficiency, a triple active bridge (TAB) converter is designed as the interface circuit, which can transfer power bi-directionally and isolate the voltage in a wide range of transient conditions. This paper proposes a droop control strategy based on adjustable virtual impedance for HESS. The fuel cell (FC) side converter adopts the virtual resistance and inductance droop (VRID) control, while the Lithium battery side converter uses the virtual capacitance droop (VCD) control. The Lithium battery can quickly absorb the high-frequency component of the system power fluctuation, which improves the dynamic response of the system. Moreover, the value of the virtual resistance is adjusted according to the operating state of the circuit, which helps to enhance the power quality and eliminate the voltage deviations caused by conventional droop control. The proposed control strategy and analytical results are validated by both simulations and experiments.
引用
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页数:9
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