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  • Simplified mathematical model for calculating the oxygen excess ratio of a PEM fuel cell system in real-time applications
    Restrepo, Carlos ...
    The oxygen starvation phenomenon is a dangerous operating condition that reduces the lifetime of PEM fuel cells. The detection and prevention of this undesired phenomenon requires estimation of the ... oxygen excess ratio O2 . The mathematical complexities of the reported methods for obtaining O2 complicate its real-time calculation and require high-performance computational devices, which significantly increase the costs of the system. In this paper, a mutual information approach is used for obtaining a simplified mathematical model forthe calculation of O2 . The usage of such a simplified model requires much less computational power for real-time monitoring of the variable O2 , while it provides comparable results to those obtained by using the complex model. Therefore it represents a costeffective solution, suitable for usage within applications that require high sampling frequencies, like emulators, converterand air compressor control loops, simulations, etc. In order to validate the accuracy of this simplified O2 calculation model, a realtime monitoring system was built and experimentally tested using both, the simplified and the complex model. The matching experimental results validate the proposed simplification and justify the use of this simplified model within real-time monitoring applications.
    Source: IEEE transactions on industrial electronics. - ISSN 0278-0046 (Vol. 61, iss. 6, June 2014, str. 2816-2825)
    Type of material - article, component part ; adult, serious
    Publish date - 2014
    Language - english
    COBISS.SI-ID - 17226262
    DOI

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