内重整高温固体氧化物燃料电池建模与仿真

Modeling and Simulation of High Temperature Direct Internal Reforming Solid Oxide Fuel Cell

建立了一维内重整高温固体氧化物燃料电池的数学模型,对复杂的偏微分方程组的求解进行了适用于快速仿真的一般差分方程组求解的转换,并建立了模块化的固体氧化物燃料电池仿真模型。该模块在组分和能量守恒的基础上,考虑了电化学反应模型,能反映燃料电池的分布参数特性,并可满足动态仿真需求。利用该模型分析了某一工况下固体氧化物燃料电池的稳态性能,并进行了动态过程的仿真,结果证明该模型可以反映固体氧化物燃料电池的基本性能。

Fuel cell is a complicated system including mass, momentum, energy balances and electrochemical reaction This paper develops a dynamic one dimensional mathematical model of high temperature direct internal reforming solid oxide fuel cell （SOFC）. Ordinary differential equations suited for the quick simulation was transferred from the partial differential equations, and modular based SOFC model was established. This model realizes the analysis of mole concentration and energy conservations, and the electrochemical reactions, and satisfies the quick dynamic simulation. The steady-state and dynamic performances of high temperature SOFC were analyzed for some condition. The result proved that the model is suited for SOFC base performances.