Reliability and Risk Assessment in a Power Electronic Based Power System (PEPS): Using Non-Constant Failure Rates of Converters

Saeed Peyghami, Pooya Davari, Huai Wang, Frede Blaabjerg

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    3 Scopus citations

    Abstract

    In this paper, conventional power system reliability and risk indices are employed to evaluate the reliability of a Power Electronic based Power System (PEPS) utilizing Physics of Failure (PoF) based reliability functions. Mission profile based methods have presented to estimate the failure probability of converters which implies non-constant failure rates for converters during operating period. Hence, a piece-wise solution is proposed to employ the Markov chain approach in order to evaluate the system level reliability of the PEPS with the non-constant failure rates. Furthermore, the impact of power management and thermal sharing on the system level reliability are studied. Numerical analyses and experiments are provided to validate the proposed approaches.

    Original languageBritish English
    Title of host publication2018 20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9789075815283
    StatePublished - 30 Oct 2018
    Event20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe - Riga, Latvia
    Duration: 17 Sep 201821 Sep 2018

    Publication series

    Name2018 20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe

    Conference

    Conference20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe
    Country/TerritoryLatvia
    CityRiga
    Period17/09/1821/09/18

    Keywords

    • Mission profile
    • Power management
    • Reliability
    • Thermal stress

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