Pinning-Based Switching Control of Cyber-Physical Supercapacitor Energy Storage Systems
Pinning-Based Switching Control of Cyber-Physical Supercapacitor Energy Storage Systems
复制标题
基于钉扎的信息物理超级电容器储能系统开关控制
DOI：
10.1109/tcst.2019.2916039
复制
发表时间：
2019
影响因子：
4.8
通讯作者：
Jianping Pan
中科院分区：
文献类型：
--
作者：
Heng Li;Jun Peng;Jianping He;Zhiwu Huang;Jing Wang;Liang He;Jianping Pan
本文提出了一种基于钉扎的开关控制方法，用于超级电容器的充电和电池平衡。所开发的超级电容器储能系统被建模为信息物理系统（CPS），由物理层、网络层和控制层组成。在物理层，采用开关电阻电路对超级电容器单元进行充电和平衡，并利用开关系统理论对物理系统进行数学表征。网络层采用图论进行建模，以表征参考电压的可访问性以及邻居信息对细胞的可用性。在控制层中，提出了基于钉扎的开关控制律来平衡充电过程中的电池电压。严格证明了CPS的稳定性，并利用框图推导了CPS的闭环模型。已经建立了实验室测试平台来验证所提出方法的有效性。大量的实验结果表明，与经典的分散控制方法相比，所提出的钉扎控制方法可以减少电压偏差并提高能源效率。还讨论了有关该方法实施的一些实际问题。
This paper presents a pinning-based switching control approach for the charging and cell balancing of supercapacitors. The developed supercapacitor energy storage system is modeled as a cyber-physical system (CPS), which consists of a physical layer, a cyber layer, and a control layer. In the physical layer, the switched resistor circuit is employed to charge and balance supercapacitor cells, and the physical system is mathematically characterized using the switched systems’ theory. The cyber layer is modeled with the graph theory to characterize the accessibility of the reference voltage and the availability of neighbors’ information to cells. In the control layer, a pinning-based switching control law is proposed to balance cell voltages during the charging process. The stability of the CPS is rigorously proved and the closed-loop model of the CPS is derived using the block diagram. A laboratory testbed has been built to verify the effectiveness of the proposed method. Extensive experiment results show that the proposed pinning control method can reduce the voltage deviation and improve the energy efficiency when compared with the classical decentralized control method. Some practical issues about the implementation of the proposed method are also discussed.