Parallel-Connected Bidirectional Current-Fed Dual Active Bridge DC-DC Converters with Decentralized Control

被引：0
|
作者：
Sha, Deshang [1 ]
Yuan, Wenqi [1 ]
Xu, Guo [1 ]
You, Fulin [1 ]
Chen, Jianliang [1 ]
机构：
[1] Beijing Inst Technol, Sch Automat, Beijing, Peoples R China
来源：
2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2016年
基金：
北京市自然科学基金;
关键词：
Bidirectional DC-DC converter; current-fed; decentralized control; power sharing; hot-swapping; DC/DC CONVERTER; MODULES; SYSTEMS;
D O I：
暂无
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：
A decentralized control strategy with improved droop control is proposed for parallel-connected current-fed bidirectional DC-DC converters to achieve the flexible power architecture and modular design. The step-up or step-down function depends on the power flow direction. An improved droop control strategy is implemented by sensing the high-voltage side (HVS) voltage and low-voltage side (LVS) current. The operation principle and power sharing characteristics are analyzed. The system stability is demonstrated in detail based on small-signal model. Excellent power sharing can be achieved not only under steady state but also in dynamics. Besides, the system has the hot-swapping feature. A 2.5kW prototype composed of two modules is established to verify the effectiveness of the proposed control strategy.
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收藏
页数：7
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