MULTI-INPUT SINGLE-OUTPUT ELM-HAMMERSTEIN MODELING AND PARAMETER IDENTIFICATION FOR PEMFC SYSTEMS

Fan Yamin; Liu Ximei; Li Meihang; Wu Qingfeng; He Junqiang

doi:10.19912/j.0254-0096.tynxb.2024-1924

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 426-436. DOI: 10.19912/j.0254-0096.tynxb.2024-1924

MULTI-INPUT SINGLE-OUTPUT ELM-HAMMERSTEIN MODELING AND PARAMETER IDENTIFICATION FOR PEMFC SYSTEMS

Fan Yamin¹, Liu Ximei², Li Meihang², Wu Qingfeng¹, He Junqiang¹

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Abstract

In response to the challenges associated with complex dynamic responses and inaccurate description of nonlinear relationships in proton exchange membrane fuel cell （PEMFC） modeling, this paper proposes a novel method for PEMFC modeling and parameter identification based on a multi-input single-output Hammerstein structure. Initially, an extreme learning machine （ELM） network is employed to capture the input nonlinearity within the Hammerstein model, thereby constructing a framework that precisely reflects both the dynamic and static characteristics of the PEMFC system. Subsequently, the key term separation technique is utilized to construct the identification model, from which the auxiliary model recursive least squares （AM-RLS） algorithm and the auxiliary model forgetting gradient （AM-FG） algorithm are derived for parameter identification by integrating the auxiliary model idea. Finally, by combining ElasticNet with mutual information analysis （MIA）, controllable variables strongly correlated with the output power quality are screened, thereby reducing modeling complexity and improving computational efficiency. Through simulation verification using the measured data under dynamic and steady current conditions, the results indicate that the established model can accurately predict the variation trend of output voltage and exactly reflect the quality fluctuation of output power.

Key words

proton exchange membrane fuel cell （PEMFC） / system identification / prediction / ELM-Hammerstein model / auxiliary model idea

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Fan Yamin, Liu Ximei, Li Meihang, Wu Qingfeng, He Junqiang. MULTI-INPUT SINGLE-OUTPUT ELM-HAMMERSTEIN MODELING AND PARAMETER IDENTIFICATION FOR PEMFC SYSTEMS[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 426-436 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1924

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