摘要
由于超级电容器单体电压比较低,在构建储能系统时通常采用多只超级电容器串并联结构。但是,因超级电容器自身参数存在差异,在放电过程中必然会出现超级电容器单体之间电压不平衡的现象,进而影响储能系统的放电效率和能量利用率,甚至影响超级电容器的使用寿命。针对上述问题,本文提出了一种均压放电控制策略,可以将电压失衡达到最小化,从而实现超级电容器能量的高效利用,并通过理论分析和实验研究进一步验证了该策略的可行性。
Multiple supercapacitors constituting of a serial-parallel structure are usually used as energy storage system as the voltage of single supercapacitor is relatively low. In the discharging process, there is voltage imbalance among supercapacitors caused by their different properties, which will affect the system's discharge efficiency and energy utilization ratio, and even the service life of the supercapacitors. To solve this problem, voltage balance control strategy is proposed to minimize the voltage imbalance and to achieve high efficiency and high energy utilization of the supercapacitors. Through theoretical analysis and experiment, the feasibility of the strategy is verified.
出处
《电工技术学报》
EI
CSCD
北大核心
2014年第4期329-333,共5页
Transactions of China Electrotechnical Society
关键词
超级电容器
电压均衡
效率
能量利用率
Supercapacitor,voltage equalization,efficiency,energy utilization ratio
