Steady-state modelling of a HT-PEMFC under various operating conditions

S. Rigal, C. Turpin, A. Jaafar, N. Chadourne, T. Hordé, Jean-Baptiste Jollys
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引用次数: 4

Abstract

In this work, a commercially available Membrane Electrode Assembly (MEA) from Advent Technology Inc., developed for a use in High Temperature Proton Exchange Membrane Fuel Cell (HT-PEMFC), was tested under various operating conditions (OCs) according to a design of experiments (DOE) with three factors varying on three levels: hydrogen gas over-stoichiometry (1.05, 1.2, 1.35), air gas over-stoichiometry (1.5, 2, 2.5) and temperature (140°C, 160°C, 180°C). A polarization curve (V-I curve) was performed for each set of operating conditions (27 curves in total) by characterizing 22 current levels. A semi-empirical and macroscopic (1D) model of the cell voltage was developed in steady state in order to model these experimental data. The proposed parameterization approach for this model (called here “multi-VI” approach) is based on the sensitivity to the OCs specific to each physicochemical phenomenon involved. With this method, only one set of parameters is used in order to model all the experimental curves (simultaneous optimization with 27 curves). The obtained results are very good: an average error less than 0.8 % and a maximum error around 2.6% between modelled and measured voltages. The obtained parameters appear consistent regardless the OCs. The proposed “multi-VI” approach with only one set of parameters seems to be an interesting way in order to converge towards a uniqueness of consistent parameters.
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HT-PEMFC在不同工作条件下的稳态建模
在这项工作中,由Advent Technology Inc.开发的用于高温质子交换膜燃料电池(HT-PEMFC)的市售膜电极组件(MEA)根据实验设计(DOE)在不同的操作条件(OCs)下进行了测试,其中三个因素在三个水平上变化:氢气超化学计量(1.05,1.2,1.35),空气气体超化学计量(1.5,2,2.5)和温度(140°C, 160°C, 180°C)。通过表征22个电流水平,对每组工作条件(共27条曲线)进行极化曲线(V-I曲线)。为了模拟这些实验数据,建立了稳态下电池电压的半经验宏观(1D)模型。该模型提出的参数化方法(这里称为“多vi”方法)是基于对所涉及的每种物理化学现象特有的OCs的敏感性。该方法只需一组参数即可对所有实验曲线进行建模(27条曲线同时优化)。得到的结果非常好:模型电压和测量电压之间的平均误差小于0.8%,最大误差约为2.6%。无论oc如何,得到的参数看起来都是一致的。为了收敛于一致参数的唯一性,提出的只有一组参数的“multi-VI”方法似乎是一种有趣的方法。
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