质子交换膜燃料电池
叠加原理
摄动(天文学)
直流电
直流偏压
电阻抗
控制理论(社会学)
介电谱
计算机科学
电压
电子工程
物理
电气工程
燃料电池
工程类
电化学
电极
控制(管理)
人工智能
量子力学
化学工程
作者
Xiaona ZHANG,Tong Zhang,Huicui Chen
出处
期刊:Fuel Cells
[Wiley]
日期:2024-02-01
卷期号:24 (1): 17-31
标识
DOI:10.1002/fuce.202300114
摘要
Abstract This paper presents an implementation method of perturbation currents for vehicular proton exchange membrane fuel cell (PEMFC) online electrochemical impedance spectroscopy (EIS) measurements. The topology of the parallel dual‐boost DC/DC converter system for the EIS measurement is presented. The DC dc and DC ac modules in the converter system implement the DC current and the sinusoidal EIS perturbation current independently. Simulation results show that the proposed perturbation current generation method can be implemented efficiently. In the frequency domain, the current of DC dc couples to the perturbation current of DC ac , leading to a reduction in the accuracy of the current amplitude after superposition. The mechanism of current amplitude reduction after superposition is discussed. Feed‐forward compensation and fuzzy compensation optimization are proposed for the DC dc current control. Both compensation algorithms achieve excellent results. A comprehensive framework for evaluating the compensation effect is presented. The evaluation results show that feed‐forward compensation has a better advantage in solving the above problems due to its simplicity and less impact on hardware control. Experimental results show that with the optimization algorithm, the input perturbation current increases from 6% to 83% of the theoretical value.
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