熔融碳酸盐燃料电池容阻特性建模与仿真

Volume-resistance Characteristics Modeling and Simulation of Molten Carbonate Fuel Cell

基于守恒原理和热力学特性,建立熔融碳酸盐燃料电池一维分布参数模型。建模中考虑质量、动量、能量和组分守恒原理以及电化学特性,考虑气体特性沿电池长度方向的变化,能反映燃料电池的分布参数特性。应用容阻建模和集总–分布参数方法,将所建立的复杂偏微分方程组转化为常微分方程组,避免压力和流量的迭代计算,可满足实时动态仿真需求。利用该模型分析了熔融碳酸盐燃料电池稳态和动态特性。结果表明,这种建模方法是可行的,可用于熔融碳酸盐燃料电池的性能仿真。

This work presented a one-dimensional mathematical model for molten carbonate fuel cell （MCFC） based on the conservation principle and thermodynamic properties. The mass, monument, energy, specifies mass balance equations and the electrochemical characteristics were considered. This model realized the analysis of the distributed performance considering the variation of local gas properties. Using the volume-resistance （V-R） modeling method the partial differential equations for cell mass and momentum balance can be changed to ordinary differential equations which met the demand for real-time dynamic simulation. Steady state and dynamic characteristics of MCFC were analyzed using the model. The results indicate that the V-R characteristic modeling method is valuable and viable in the MCFC system, and the model can be used for the simulation of MCFC.