质子交换膜燃料电池主动容错控制策略的实验验证

Etienne Dijoux, N. Steiner, M. Benne, M. Péra, B. Grondin-Perez
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引用次数: 2

摘要

质子交换膜燃料电池(pemfc)的可靠性是实现大规模工业化和商业化的主要问题。事实上,由于异常的操作条件,即故障,性能可能会下降,这可能导致燃料电池性能的短暂衰减或永久损坏,无法恢复。文献表明,长时间暴露在故障中会导致燃料电池退化。因此,有必要使用工具,不仅可以诊断这些故障情况,还可以修改燃料电池的操作,以恢复健康的工作点。为此,一种方法是主动容错控制(AFTC)策略,它由三个功能组成。首先,诊断部分允许故障检测和识别。然后是决策部分,它是一种算法,旨在找到一个新的工作点,以减轻发生的故障。最后,控制部分应用由决策算法建立的缓解策略。本文的工作主要集中在决策部分。旨在为提高pemfc的可靠性做出新的贡献,并解决水管理问题,即使用开发的AFTC工具解决细胞泛洪和膜干燥问题。该策略在单个PEMFC电池上进行了测试和验证,并对结果进行了介绍、分析和讨论。
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Experimental Validation of an Active Fault Tolerant Control Strategy Applied to a Proton Exchange Membrane Fuel Cell
Reliability of proton exchange membrane fuel cells (PEMFCs) is a major issue for large industrialization and commercialization. Indeed, performance can be degraded due to abnormal operating conditions, namely, faults, which lead either to a transient decay of the fuel cell performance or to permanent damage that cannot be recovered. The literature shows that long-time exposure to faults leads to fuel cell degradation. Therefore, it is necessary to use tools that can not only diagnose these faulty conditions, but also modify the fuel cell operations to recover a healthy operating point. For that purpose, one approach is the Active Fault Tolerant Control (AFTC) strategy which is composed of three functions. First, a diagnosis part allows fault detection and identification. Then a decision part, which is an algorithm aiming at finding a new operating point that mitigates the occurring fault. Finally, a control part applies the mitigation strategy established by the decision algorithm. The present work focuses on the decision part. and aims to bring a new contribution to PEMFCs reliability improvement and address water management issues, namely, the cell flooding and membrane drying out with the developed AFTC tool. The strategy is tested and validated on a single PEMFC cell and results are presented, analyzed, and discussed.
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