摘要
在考虑浓差极化电压、活性极化电压以及欧姆电压损失的基础上,推导出单个固体氧化物燃料电池(solid oxide fuel cell,SOFC)的电压、各种气体分压及电流的数学关系。以集总的思维方式,依据SOFC电池堆内部气体摩尔流量的动态守恒方程,得出各种气体分压和电流的函数关系。在此基础上构建SOFC的Matlab集总模型。由于具有可调的动态参数,该模型能够灵活且较准确地模拟实际的SOFC系统。通过对稳态电压电流特性和动态单步负荷跟踪特性进行实验仿真,表明该模型的特性能够较好地吻合分布式模型及实测数据所表征的特性。在分布式燃料电池发电系统研究中,具有一定的应用价值。
The mathematical relationship among voltage,various gas partial pressure and current in a single solid oxide fuel cell（SOFC） was deduced based on the concentration voltage loss,activation voltage loss and ohmic voltage loss.The function of various gas partial pressure and current was obtained according to dynamic conservation equations of gas molar flow with lumped manner in SOFC cell stack.On this basis,the SOFC Matlab lumped model was established.With the adjustable dynamic parameters,the model can simulate the actual SOFC systems accurately and flexibly.Through the steady-state voltage and current characteristics and its dynamic characteristics following single-step load change simulation,results show that the model can better match the representation characteristics of some distributed model and measured data.It has some value for further study of the distributed fuel cell power generation system.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第17期104-110,共7页
Proceedings of the CSEE
