Consensus-Based Cell Balancing of Reconfigurable Supercapacitors
Consensus-Based Cell Balancing of Reconfigurable Supercapacitors
复制标题
可重构超级电容器基于共识的电池平衡
DOI：
10.1109/tia.2020.2990101
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发表时间：
2020
影响因子：
4.4
通讯作者：
Zhiwu Huang
中科院分区：
文献类型：
--
作者：
Fu Jiang;Zhiqiang Meng;Heng Li;Hongtao Liao;Yun Jiao;Muxin Han;Jun Peng;Zhiwu Huang
可重构电路在超级电容器梯级应用中已成为一种很有前途的电池平衡解决方案。然而，经典的可重构超级电容器分散控制方法会导致电池的高压分布，从而降低超级电容器的寿命。在本文中，我们提出了一种基于共识的可重构超级电容器的电池平衡方法，其中电池电压被同步并保持在尽可能低的水平，以缓解超级电容器的老化。利用开关系统理论和图论对可重构超级电容器的网络物理模型进行了描述。设计了一种基于共识的跟踪控制来平衡电池电压。严格证明了所提出的电池平衡方法能够保证电池电压收敛到参考电压。搭建了实验室硬件实验台，验证了该方法的有效性。大量的实验结果表明，与现有方法相比，该方法可以显著延长电池的寿命。文中还讨论了该方法的一些实际问题。
Reconfigurable circuits have emerged as a promising cell balancing solution in supercapacitor echelon applications. However, the classical decentralized control method of reconfigurable supercapacitors results in high-voltage profiles of cells, which degrades the lifetime of supercapacitors. In this article, we propose a consensus-based cell balancing approach for reconfigurable supercapacitors, where the cell voltages are synchronized and maintained as low as possible to alleviate the aging of supercapacitors. The switched systems theory and graph theory are utilized to characterize the cyber-physical model of reconfigurable supercapacitors. A consensus-based tracking control is designed to balance cell voltages. It is rigorously proved that the proposed cell balancing method can guarantee cell voltages converge to the reference voltage. A laboratory hardware testbed has been built to verify the effectiveness of the proposed method. Extensive experiment results show that the proposed method can prolong the lifetime of cells considerably when compared with existing methods. Some practical issues of the proposed method are also discussed.