Health management can effectively extend the service life of proton exchange membrane fuel cells and reduce the maintenance cost. This paper proposes a health management method for the proton exchange membrane fuel cells based on an active fault tolerant control method. With the advantages of low cost and high speed, a stack voltage model is developed for the condition monitoring. The fast electrochemical impedance spectroscopy measurement is performed when the condition monitoring module detects faults. Then, the distribution of relaxation time is used to extract the characteristics of electrochemical impedance spectroscopy for fault diagnosis. Thereafter, based on the diagnosis results, the performance recovery strategies are incorporated to cope with the faults. This paper adopts three typical fuel cell faults, namely flooding, membrane drying, and air starvation, to demonstrate the effectiveness of the proposed health management. Experimental results show that the proposed health management can realize real-time health monitoring and rapid fault diagnosis, and achieve effective recovery of performance under faulty conditions, thereby significantly improving the reliability of the proton exchange membrane fuel cell system.

中文翻译：

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基于主动容错控制策略的PEM燃料电池健康管理

健康管理可以有效地延长质子交换膜燃料电池的使用寿命，降低维护成本。提出了一种基于主动容错控制方法的质子交换膜燃料电池健康管理方法。利用低成本和高速度的优点，开发了用于状态监测的电池堆电压模型。当状态监视模块检测到故障时，将执行快速电化学阻抗谱测量。然后，使用弛豫时间的分布来提取电化学阻抗谱的特征，以进行故障诊断。此后，根据诊断结果，采用性能恢复策略来应对故障。本文采用了三种典型的燃料电池故障，即溢流，膜干燥，和空中饥饿，以证明拟议中的健康管理的有效性。实验结果表明，提出的健康管理能够实现实时的健康监测和快速的故障诊断，并在故障情况下实现性能的有效恢复，从而显着提高了质子交换膜燃料电池系统的可靠性。