Coupling dynamic electromagnetic finite element models to circuit simulators by using model order reduction

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    Abstract

    Two model reduction methods, proper orthogonal decomposition (POD) and discrete empirical interpolation method (DEIM) are applied to a finite-element model of a one-phase transformer. The resulting reduced order model is strongly coupled with a system simulator and the performance, feasibility and accuracy of the resulting system is studied. The results show that the workload of evaluating the finite element model drops drastically as the amount of degrees of freedom reduces by 99 % and the amount of involved elements reduces by 65 %. The accuracy of the results is feasible. The time to calculate a single timestep reduces on average 75 %. The full simulation time drops on average by 45 %. In this case the performance of the naive coupling is bad because it introduces two nested nonlinear solvers. This reduces the total speed up of the simulation.
    Original languageEnglish
    Title of host publication2017 Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL)
    PublisherIEEE
    Pages2385-2392
    ISBN (Electronic)978-1-5386-1211-8
    DOIs
    Publication statusPublished - 2018
    Publication typeA4 Article in a conference publication
    EventProgress in Electromagnetics Research Symposium -
    Duration: 1 Jan 1900 → …

    Conference

    ConferenceProgress in Electromagnetics Research Symposium
    Period1/01/00 → …

    Publication forum classification

    • Publication forum level 1

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