Real-Time Capable Transient H2 Partial Pressure Model for Proton Exchange Membrane Fuel Cell Systems

Q3 Engineering

IFAC-PapersOnLine Pub Date : 2025-01-01 DOI:10.1016/j.ifacol.2025.03.003

Martin Osterhammer , Fengmin Du , Volker Formanski , Marcelo Lobo Heldwein

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引用次数: 0

Abstract

Fuel cell electric vehicles hold a significant promise for reducing the carbon footprint in the automotive sector by leveraging H₂ as a clean fuel source. Maintaining a consistent H₂ supply to the fuel cell system is vital. N₂ crossover can lead to an inert gas built-up on the H₂ supply side, adversely affecting fuel cell performance and durability. Through purging, gases are released, and a N₂ built-up in the H₂ supply system can be prevented, yet this also leads to fuel loss. This fuel loss can be minimized by keeping an optimal N₂ molar fraction. We developed a dynamic model for effectively designing, controlling, and diagnosing fuel cell systems by predicting the N₂ molar fraction in the H₂ supply. This model considers factors such as N₂ distribution throughout the fuel cell stack, N₂ crossover, and the purge process. The model is simplified to a differential equation of first order and solved using the explicit Euler method at a typical automotive time step of 0.01s. The proposed model is validated by a H₂ measurement in a fuel cell system with passive recirculation.

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来源期刊

IFAC-PapersOnLine Engineering-Control and Systems Engineering

CiteScore

1.70

自引率

0.00%

发文量

1122

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