Title :
A Physically Based Dynamic Model for Solid Oxide Fuel Cells
Author :
Wang, Caisheng ; Nehrir, Hashem M.
Author_Institution :
Wayne State Univ., Detroit
Abstract :
This paper presents a physically based dynamic model for tubular solid oxide fuel cells (SOFCs) based on the electrochemical and thermodynamic characteristics inside SOFC. The diffusion, material conservation, electrochemical, and thermodynamic equations are used to develop the SOFC model. The effect of temperature on the steady-state (V-I and P-I) characteristics of the SOFC model has been studied, and the model responses have been obtained for constant fuel flow as well as for constant fuel utilization operating modes. The dynamic characteristics of the model are investigated in small, medium, and large timescales, from milliseconds to minutes. The model has been implemented in MATLAB/Simulink and used to investigate the distributed generation applications of SOFCs.
Keywords :
electrochemistry; solid oxide fuel cells; thermodynamics; MATLAB/Simulink; SOFC model; constant fuel flow; constant fuel utilization; diffusion equations; distributed generation; dynamic characteristics; electrochemical characteristic; electrochemical equations; material conservation equations; physically based dynamic model; steady-state characteristics; temperature effect; thermodynamic characteristics; tubular solid oxide fuel cells; Constant fuel flow; constant fuel utilization; distributed generation; dynamic model; fuel cell; operating mode; solid oxide fuel cell (SOFC); timescale;
Journal_Title :
Energy Conversion, IEEE Transactions on
DOI :
10.1109/TEC.2007.895468
