PEM燃料电池组动态单电压的稳定性分析  

Analysis of Dynamic Single Cell Voltage Stability of PEM Fuel Cell Stack

作　　者：杜爱勋 张选高 Du Aixun;Zhang Xuangao(Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China;Wuhan Hydrogen Fuel Cell Engineering Research Center,Wuhan 430064,China)

机构地区：[1]武汉船用电力推进装置研究所,武汉430064 [2]武汉市氢燃料电池工程技术研究中心,武汉430064

出　　处：《船电技术》2020年第3期23-26,32,共5页Marine Electric & Electronic Engineering

基　　金：科技部2017年“新能源汽车”重点专项“车用快速动态响应燃料电池发动机研发”(2017YFB0103000)。

摘　　要：在动态工况下,PEM燃料电池单电压的稳定性是燃料电池动力系统持续稳定运行的保障,而质子交换膜的水合状态、阴极和阳极的排水状态、氢氧燃料传质效应都会显著影响单电压的稳定性。本文基于PEM燃料电池组动态工况试验,引入相对平均电压、相对差异度等指标以分析各燃料电池组单电压的稳定性,探究燃料电池组各电堆单元单电压随工况的变化规律及影响因素,以评价燃料电池电堆性能,指导系统控制策略的制定。The stability of single cell voltage is the guarantee of the continuous and stable operation of fuel cell power system under dynamic conditions.The stability of dynamic single cell voltage of proton-exchange-membrane(PEM)fuel cell stack is affected by the hydration status of the proton exchange membrane,the drainage state of the cathode and anode,and the mass transfer effect of fuel.Based on dynamic condition experiment of PEM fuel cell stack,the stabili ty of single cell voltage was analyzed by relative average voltage and coefficient of relative variation introduced in this article.and the dynamic regularity of single cell voltage of PEM fuel cell stack varied with dynamic conditions and its and influen ce factors were investigated,so as to evaluate the performance of PEM fuel cell stack and guide the formulation of control strategy.

关 键 词：PEM燃料电池组 动态电压 相对差异度 稳定性 

分 类 号：TM911[电气工程—电力电子与电力传动]