Cooperative Control for Multi-Module Charging Systems of Ultracapacitors
Cooperative Control for Multi-Module Charging Systems of Ultracapacitors
复制标题
超级电容器多模块充电系统的协同控制
DOI：
10.3390/en13195218
复制
发表时间：
2020-10
期刊：
影响因子：
3.2
通讯作者：
Jun Peng
中科院分区：
文献类型：
--
作者：
Xiaoyong Zhang;Hongtao Liao;Jiaxuan Lei;Heng Li;Jun Peng
近年来，超级电容器因其污染小、功率密度高、寿命长等优点在储能领域受到广泛关注。在许多应用中，超级电容器需要用大电流充电，通常采用多模块充电系统。经典的分散控制方法虽然可以控制超级电容器的充电过程，但存在充电模块之间充电电流不平衡的问题。针对多模块充电系统中充电模块之间的电流不平衡问题，提出了一种合作级联充电方法。首先，利用状态空间平均法和图论对多模块充电系统进行建模。其次，提出了一种有效的协同级联控制，其中外电压环将输出电压稳定到期望电压，内电流环保证每个充电器的电流跟随目标电流。利用方框图建立了充电系统的闭环模型。为了评估所提出的充电方法，建立了一个实验室原型。与经典的分散方法相比，该方法可以有效地抑制电流不平衡，仿真和实验结果都证明了这一点。
Ultracapacitors have recently received great attention for energy storage due to their small pollution, high power density, and long lifetime. In many applications, ultracapacitors need to be charged with a high current, where a multi-module charging system is typically adopted. Although the classical decentralized control method can control the charging process of ultracapacitors, there exists a problem that the charging current may be imbalanced among charging modules. In this paper, a cooperative cascade charging method is proposed for the multi-module charging system to reduce the current imbalance among charging modules. First, the state-space averaging method and graph theory are used to model the multiple-module charging system. Second, an effective cooperative cascade control is proposed, where the outer voltage loop stabilizes the output voltage to the desired voltage and the inner current loop guarantees the current of each charger to follow the target current. The block diagram is used to establish the closed-loop model of the charging system. In order to evaluate the proposed charging method, a laboratory prototype was established. Compared with the classical decentralized method, this method can effectively suppress the current imbalance, which is proved by simulation and experimental results.
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影响因子：
5.7
作者：
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DOI：
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期刊：
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影响因子：
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