Dynamic Fractional-Order Model of Proton Exchange Membrane Fuel Cell System for Sustainability Improvement

Yunjin Ao, Yong-Chao Liu (), Salah Laghrouche and Denis Candusso
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Yunjin Ao: School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
Yong-Chao Liu: Energy Department, FEMTO-ST Institute (UMR 6174), UTBM, Université Bourgogne Franche-Comté, CNRS, 90010 Belfort, France
Salah Laghrouche: Energy Department, FEMTO-ST Institute (UMR 6174), UTBM, Université Bourgogne Franche-Comté, CNRS, 90010 Belfort, France
Denis Candusso: FCLAB (UAR 2200), UFC, UTBM, Université Bourgogne Franche-Comté, CNRS, 90010 Belfort, France

Sustainability, 2024, vol. 16, issue 7, 1-17

Abstract: The proton exchange membrane fuel cell (PEMFC) stands at the forefront of advancing energy sustainability. Effective monitoring, control, diagnosis, and prognosis are crucial for optimizing the PEMFC system’s sustainability, necessitating a dynamic model that can capture the transient response of the PEMFC. This paper uses a dynamic fractional-order model to describe the behaviors of a stationary micro combined heat and power (mCHP) PEMFC stack. Based on the fractional-order equivalent circuit model, the applied model accurately represents the electrochemical impedance spectroscopy (EIS) and the dynamic voltage response under transient conditions. The applied model is validated through experiments on an mCHP PEMFC stack under various fault conditions. The EIS data is analyzed under different current densities and various fault conditions, including the stoichiometry of the anode and cathode, the stack temperature, and the relative humidity. The dynamic voltage response of the applied model shows good correspondence with experimental results in both phase and amplitude, thereby affirming the method’s precision and solidifying its role as a reliable tool for enhancing the sustainability and operational efficiency of PEMFC systems.

Keywords: proton exchange membrane fuel cell; micro combined heat and power; electrochemical impedance spectroscopy; equivalent circuit model; dynamic model; fractional-order model; dynamic voltage response; energy sustainability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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