Abstract
Proton exchange membrane fuel cell vehicles using hydrogen as fuel has become one of the key development directions in the field of new energy vehicles. However, hydrogen is flammable, it is easy to trigger serious safety accidents once hydrogen leak occurs. Therefore, the application of hydrogen leakage diagnosis methods is essential for the safe operation of proton exchange membrane fuel cell system. This paper reviews the existing methods of diagnosing hydrogen leakage for proton exchange membrane fuel cell system. The principles, research status and application scopes of different methods are elaborated, and these methods are analyzed based on three aspects of on-line diagnosis, real-time performance and calculation complexity. Furthermore, suggestions are provided for the selection of on-line hydrogen leakage diagnosis methods for fuel cell vehicles. Based on this review, readers can easily understand the current status of hydrogen leakage diagnosis methods for proton exchange membrane fuel cell system, and it can provide references for the application selection of the hydrogen leakage diagnosis methods for fuel cell vehicles.
Highlights
With the increasingly serious problems of energy and environment, the research on renewable and sustainable energy has arouse wide attention in the world
It is suggested that the model-based methods or datadriven methods and the method based on the output voltage diagnosis proposed in [109] or [110] are used together for the diagnosis of hydrogen crossover leakage in the stack in the running process of fuel cell vehicles (FCVs)
The method based on the pressure decay diagnosis described in [112] can be used to diagnose the hydrogen crossover leakage in the stack at the proton exchange membrane fuel cell (PEMFC) system of FCVs shutdown
Summary
With the increasingly serious problems of energy and environment, the research on renewable and sustainable energy has arouse wide attention in the world. In order to avoid the occurrence of the accidents, the research and application of hydrogen leakage diagnosis technologies have aroused much attention in academic and engineering fields. These technologies make it possible that some emergency measures can be taken in time to ensure the safety of people’s life and property. This paper aims to provide a comprehensive review of hydrogen leakage diagnosis methods for PEMFC system, where the basic principles, research status and application scopes of the hydrogen leakage diagnosis methods for PEMFC systems are presented They are compared from three aspects of on-line diagnosis, realtime performance and computational complexity.
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