Implementation and optimization of perturbation currents for vehicular proton exchange membrane fuel cells online electrochemical impedance spectroscopy measurements

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-02-05 DOI:10.1002/fuce.202300114

Xiaojie Zhang, Tong Zhang, Huicui Chen

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引用次数: 0

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 DCdc and DCac 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 DCdc couples to the perturbation current of DCac, 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 DCdc 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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车辆质子交换膜燃料电池在线电化学阻抗谱测量扰动电流的实施与优化

本文介绍了用于车载质子交换膜燃料电池（PEMFC）在线电化学阻抗谱（EIS）测量的扰动电流实施方法。文中介绍了用于 EIS 测量的并联双升压 DC/DC 转换器系统的拓扑结构。转换系统中的 DCdc 和 DCac 模块分别独立执行直流电流和正弦 EIS 扰动电流。仿真结果表明，所提出的扰动电流生成方法可以高效地实现。在频域中，DCdc 的电流与 DCac 的扰动电流耦合，导致叠加后的电流幅值精度降低。本文讨论了叠加后电流幅值降低的机理。针对直流直流电流控制，提出了前馈补偿和模糊补偿优化算法。两种补偿算法都取得了很好的效果。提出了评估补偿效果的综合框架。评估结果表明，前馈补偿因其简单性和对硬件控制的影响较小，在解决上述问题时具有更好的优势。实验结果表明，采用优化算法后，输入扰动电流从理论值的 6% 增加到 83%。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.