Fault tree analysis of proton exchange membrane fuel cell system safety

Collong, Sophie; Kouta, Raed

doi:10.1016/j.ijhydene.2015.04.101

Cited by 43 publications

(29 citation statements)

References 26 publications

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“…This can be attributed to a sharp increase in the number of auxiliary components and connections, which can all fail, overcompensating the positive effect of the additional FC redundancy. An optimal system design comprising of two FCs is consequently concluded (for the optimization of the fuel cell itself regarding reliability and details on their different failure modes, the respective works by Whiteley et al, Collong et al, Gerbec et al, and Placca et al are recommended).…”

Section: Resultsmentioning

confidence: 99%

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Reliability of liquid organic hydrogen carrier‐based energy storage in a mobility application

Uhrig

Kadar

Müller

2020

Energy Science & Engineering

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Liquid organic hydrogen carriers (LOHC) are a technology that allows storing hydrogen in a safe and dense manner by reversible chemical conversion. They constitute a very promising option for energy storage, transport, and release combined with electric power generation by fuel cells in large‐scale applications like trains. In order to establish trains running on LOHC, it is mandatory to ensure the reliability of the system. This study evaluates various system configurations concerning reliability and resilience. The fault tree analysis method has been used to quantify the probability of failure. The S‐P matrix was applied to assess the different failure modes in context of severity as well as their probability. The MTTF of the system can be more than doubled by introducing single redundancy for the fuel cell and the reactor, while more than two redundant components diminish the positive effect on reliability due to higher complexity. It is estimated that the systems full functionality is available for more than 97% of its operating time.

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Section: Resultsmentioning

confidence: 99%

“…FMEA and FTA are used in the field of FCs mainly to determine the degradation in voltage per hour . In addition, fault trees are used to evaluate FC safety, reliability, availability, and maintainability …”

Section: Reliability and Resiliencementioning

confidence: 99%

Reliability of liquid organic hydrogen carrier‐based energy storage in a mobility application

Uhrig

Kadar

Müller

2020

Energy Science & Engineering

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“…This unacceptable situation/event is called the "top event". In the analysis of the fault tree, it is required to distinguish a component fault from a system fault that results from more than one component [33,47]. Also, the classification of failures into primary and secondary categories will be advantageous in the estimation of the fault tree.…”

Section: Fault Tree Analysismentioning

confidence: 99%

“…For example, the concept of cut sets can also be applied to fault trees by using the Boolean algebra method. This methodology has been used in several applications as well as PEMFCs [32,33]. The focus of the FTA suggested in this paper is the failure of power stage as the top event by considering filters as input and output.…”

Section: Introductionmentioning

confidence: 99%

Lifetime Estimation and Failure Risk Analysis in a Power Stage Used in Wind-Fuel Cell Hybrid Energy Systems

et al. 2019

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This paper presents a methodology based on the failure mode and effect analysis (FMEA) to analyze the failures in the power stage of wind-fuel cell hybrid energy systems. Besides, fault tree analysis (FTA) is applied to describe the probabilistic failures in the vital subcomponents. Finally, the reliability assessment of the system is carried out for a five-year operation that is guaranteed by the manufacturer. So, as the result, the reliability analysis proves that the metal oxide semiconductor field effect transistor (MOSFET) and electrolytic capacitor are the most critical components that introduce damages in the power circuit. Moreover, a comparative study on the reliability assessment by the exponential distribution and the Weibull distribution show that the B1 lifetime obtained by the Weibull distribution is closer to reality.

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“…In spite of all the drawbacks of Fault Tree analysis, it is frequently used. Collong and Kouta evaluated probability of explosion and identified critical failure sequences of a fuel cell system using Fault Trees [3].To overcome the drawbacks of FTA modified versions of Fault Tree method such as conditional Fault Tree [20] or combination of methods such as fuzzy logic [16] and generic algorithm [12] with FTA can be used. Detailed modelling capabilities of Markov modelling makes it a better alternative and is used by many researchers when modelling safety related systems for instance systems with selfdiagnostic components [23] and redundant standby safety systems [8] and is also used for different purposes such as SIL verification [21] and performance assessments [15].…”

Section: Science and Technologymentioning

confidence: 99%