Abstract
For the sustainable development of the environment, the Fuel cell is more and more popular in power generation because of its high efficiency and high capacity. Among them, the Solid Oxide Fuel Cell (SOFC) owns the highest efficiency and is one of the most potential candidates. To optimize and control the SOFC system, building a detailed model of SOFC is very important. Thus, a SOFC stack model which coupled material flow and energy flow was proposed. In this model, it includes transport processes, the electrochemical and chemical reactions is simulated and evaluated in this paper. This model is based on the Bond Graph theory, so it simulated the energy conservation between chemical energy and electrical energy, electrical energy and thermal energy, chemical energy and thermal energy etc. It is a transient model and has a distribution along the gas channel. First, the theory and dynamics of SOFC model were proposed. Second, the energy flow and material flow in SOFC was described and the SOFC based on Bond Graph model was proposed. Finally, the SOFC stack was simulated in this paper.
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