基于诊断用COMSOL模型的PEMFC故障诊断方法研究

摘要

基于COMSOL+Multiphysics 3.5平台建立了诊断用PEMFC二维分布参数模型。在所建立诊断用模型的基础上,进行了阴极欠气、膜干和水淹3种典型故障的嵌入研究。通过对比故障发生前后PEMFC内部相应物理量的变化,验证了故障嵌入的可行性。最后,应用小波分析故障诊断方法,对PEMFC端口电压信号进行相关的数字信号处理,识别了3种典型故障, 初步达到了故障诊断的目的,验证了利用模型发展相关诊断方法的有效性。

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	周苏
	任宏伟
	裴冯来

关键词： COMSOL+Multiphysics； PEMFC分布参数模型；故障嵌入；故障诊断

Abstract：

A 2D diagnostic PEMFC distributed parameter model was set up using COMSOL+Multiphysics 3.5 platform. On this basis, three typical faults including cathode gas starvation, membrane dehydration and flooding were embedded into the diagnostic model. According to compare the flow field variation of the relevant parameters before and after the failure,the feasibility of faults embedding was verified. Finally, by using the stack voltage signals and wavelet analysis method, three typical faults have been identified and classified. The aim of faults diagnosis has been achieved preliminarily, and the feasibility of using a fault embedded model to develop a diagnostic method is established.

Keywords： COMSOL+Multiphysics； PEMFC distributed parameter model； faults embedding； faults diagnosis

Received 2014-08-30;

Corresponding Authors: 裴冯来,E-mail: will_pei@hotmail.com。 Email: will_pei@hotmail.com

About author: 周苏(1961-),男,教授,博士生导师,主要研究领域为新型车辆动力系统(包括燃料电池、车用动力电池和电机)的建模、仿真及控制。

引用本文:

周苏, 任宏伟, 裴冯来.基于诊断用COMSOL模型的PEMFC故障诊断方法研究[J]. 化学工业与工程, 2015,32(4): 56-62

Zhou Su, Ren Hongwei, Pei Fenglai.Faults Diagnosis Method Study of PEMFC Based on a Diagnostic COMSOL Model[J]. Chemcial Industry and Engineering, 2015,32(4): 56-62

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