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Optimization of fuel cell shutdown purge strategy based on machine learning: Mechanism analysis and experimental verification

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  • Shi, Lei
  • Du, Chang
  • Zhou, Julong
  • Yi, Yahui
  • Li, Ruitao
  • Liu, Ze
  • Su, Jianbin
  • Qian, Liqin
  • Ma, Tiancai
  • Tang, Xingwang

Abstract

Shutdown purging can significantly enhance the cold start success rate of fuel cells while mitigating mechanical degradation. This study first identifies that the temperature, relative pressure, relative humidity, and flow rate of the purge gas, within the ranges of 333.15–353.15 K, 20–90 %, 20–90 %, and 0.1–2 Q, respectively, have a notable impact on the purging effectiveness. Subsequently, the PSO-SVR-NSGA-II algorithm is employed to optimize these variables, yielding optimal purging conditions of 333.17 K, 20.013 %, 20.027 %, and 1.0355 Q for temperature, relative pressure, relative humidity, and purge flow rate, respectively. Finally, purging experiments demonstrate that under the same purging duration, the optimized conditions increase the HFR value by 0.79 mΩ, confirming the effectiveness of the optimization strategy. This study provides a new reference for the development of shutdown purging optimization strategies for fuel cells.

Suggested Citation

  • Shi, Lei & Du, Chang & Zhou, Julong & Yi, Yahui & Li, Ruitao & Liu, Ze & Su, Jianbin & Qian, Liqin & Ma, Tiancai & Tang, Xingwang, 2025. "Optimization of fuel cell shutdown purge strategy based on machine learning: Mechanism analysis and experimental verification," Renewable Energy, Elsevier, vol. 248(C).
    • Handle: RePEc:eee:renene:v:248:y:2025:i:c:s0960148125008274
    DOI: 10.1016/j.renene.2025.123165
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    References listed on IDEAS

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