PEM燃料电池动态特征的仿真分析  

Simulation analysis of dynamic characteristic of PEM fuel cell

作　　者：涂曙光 张禾 杜传进[2] 肖金生[2] 

机构地区：[1]北京清能华通科技发展有限公司,北京100084 [2]武汉理工大学汽车工程学院,湖北武汉430070

出　　处：《电源技术》2009年第11期997-1000,共4页Chinese Journal of Power Sources

基　　金：教育部高等学校博士学科点专项科研基金(20050497014)

摘　　要：运用Fluent的PEM模块对质子交换膜燃料电池在改变气体湿度、流量以及电池负载条件下,电池的动态特性进行仿真分析。结果表明,燃料电池具有快速的动态响应能力,改变供给气体湿度的情况下,1s内达到几乎稳定状态,在3min内达到新的稳定状态。而且,膜的湿度对电池的动态性能影响很大。适当提高空气流速,可以有效地提高排水能力,提高电池的性能。中、低电流密度下,空气流速对电池的动态性能和动态响应能力影响不大;高电流密度下,空气流速对电池动态性能和响应能力有显著影响。On the condition of changing gas humidity,flux and load, the dynamic characteristic of PEMFC is simulated and studied with PEM module of Fluent. The result indicates that FC has fast dynamic response ability. If we change the gas humidity, it can achieve a stable state in 1 s; and achieve a new stable state in 3 min. Furthermore, the humidity of membrane can strongly affect the dynamic characteristic of cells. The airflow rate is heightened properly, then, the drainage capability and cell＇s performance can be advanced effectively. On the condition of high current density, airflow rate can affect the dynamic characteristic and response ability of celt remarkably; but on the condition of mid or low current density, the state is contrarily by the square.

关 键 词：质子交换膜 燃料电池 动态 数值模拟 

分 类 号：TM911.4[电气工程—电力电子与电力传动]