一种基于超级电容器组串并联切换的储能系统

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摘要为满足内燃-直线发电集成动力系统(Internal Combustion-Linear Generator Integrated Power System,ICLGIPS) 能量的双向高效流动要求,提出了一种储能系统,采用超级电容器组串并联切换技术和优化设计的双向DC-DC功率变换器 (Bi-directional DC-DC Power Converter,BDPC) 相结合,实现了低电压值等级电源供电的可变电压系统的设计理念,电源电压和系统电压可以独立变化,使得系统电压可随不同动力装置的需要而改变。新系统可实现双向升、降压变换四种模式的能量控制策略,大大增加了电机的调速范围和可实现能量回馈的速度范围。利用超级电容器组串并联切换技术,实现了电压大范围变化条件下的BDPC的电压比被控制在理想范围内,提高了功率变换和传输的效率。仿真结果和部分实验结果验证了新系统设计的正确性和控制策略的有效性,能量流效率较好地满足了系统的要求。

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	任桂周
	常思勤

关键词 ：直线发电机, 超级电容器组, 串并联切换, 双向DC-DC功率变换器, 储能系统

Abstract：This paper proposes a novel energy storage system (ESS) that is aiming at satisfying high efficiency energy flow requirements of internal combustion-linear generator integrated power system (ICLGIPS). In the proposed ESS, series-parallel switchover Ultra-capacitor (UC) banks can be combination with the optimization designed bi-direction DC-DC power converter (BDPC) to ensure a variable voltage power system supply under low-voltage level. The supply voltage and system voltage can be changed independently. It makes the system voltage can vary with different power plant needs. And the bi-directional boost/buck operation under four work conditions can be achieved, the speed adjustment range of motor is extended and the desired variable ration of BDPC with a wide voltage range is achieved by using series-parallel connections switchover technology for UC banks. The simulation and experimental results are in positive to the analysis showing the feasibility of the proposed system and control strategy.

Key words： Linear electric generator(LEG) ultra-capacitor(UC) banks series-parallel switchover bi-direction DC-DC power converter(BDPC) energy storage system(ESS)

收稿日期: 2012-05-24 出版日期: 2014-06-16

PACS:

TK02

基金资助:国家自然科学基金（50876043）,国家863高技术基金（2006AA05Z236）和山东省自然科学基金（ZR2013EEL022）资助项目; 收稿日期 2012-05-24 改稿日期2012-11-02; 效率（%）

引用本文:

任桂周, 常思勤. 一种基于超级电容器组串并联切换的储能系统[J]. 电工技术学报, 2014, 29(1): 187-195. Ren Guizhou, Chang Siqin. An Energy Storage System Based on Series-Parallel Switchover of Ultra-capacitor Banks. Transactions of China Electrotechnical Society, 2014, 29(1): 187-195.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I1/187

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