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

IF 2.6 4区工程技术 Q3 ELECTROCHEMISTRY

Fuel Cells 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 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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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%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fuel Cells 工程技术-电化学

CiteScore

5.80

自引率

3.60%

发文量

审稿时长

3.7 months

期刊介绍： This journal is only available online from 2011 onwards. Fuel Cells — From Fundamentals to Systems publishes on all aspects of fuel cells, ranging from their molecular basis to their applications in systems such as power plants, road vehicles and power sources in portables. Fuel Cells is a platform for scientific exchange in a diverse interdisciplinary field. All related work in -chemistry- materials science- physics- chemical engineering- electrical engineering- mechanical engineering- is included. Fuel Cells—From Fundamentals to Systems has an International Editorial Board and Editorial Advisory Board, with each Editor being a renowned expert representing a key discipline in the field from either a distinguished academic institution or one of the globally leading companies. Fuel Cells—From Fundamentals to Systems is designed to meet the needs of scientists and engineers who are actively working in the field. Until now, information on materials, stack technology and system approaches has been dispersed over a number of traditional scientific journals dedicated to classical disciplines such as electrochemistry, materials science or power technology. Fuel Cells—From Fundamentals to Systems concentrates on the publication of peer-reviewed original research papers and reviews.