| Optimal operating points of PEM fuel cell model with RSM Dongji Xuan
The Journal of Mechanical Science and Technology, vol. 23, no. 3, pp.1945-1951, 2009
Abstract : The output power efficiency of the fuel cell system mainly depends on the required current, stack temperature, air
excess ratio, hydrogen excess ratio, and inlet air humidity. Therefore, the operating conditions should be optimized to
get maximum output power efficiency. In this paper, a dynamic model for the fuel cell stack was developed, which is
comprised of a mass flow model, a gas diffusion layer model, a membrane hydration, and a stack voltage model. Experiments
have been performed to calibrate the dynamic Polymer Electrolyte Membrane Fuel Cell (PEMFC) stack
model. To achieve the maximum output power and the minimum use of hydrogen in a certain power condition, optimization
was carried out using Response Surface Methodology (RSM) based on the proposed PEMFC stack model. Using
the developed method, optimal operating conditions can be effectively selected in order to obtain minimum hydrogen
consumption.
Keyword :
Dynamic modeling; Gas diffusion layer; Optimization; PEMFC; RSM
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