Equivalent circuit model estimation of induction machines under elevated temperature conditions

M. Sumislawska, O. Agbaje, D.F. Kavanagh, Keith J. Burnham

    Research output: Chapter in Book/Report/Conference proceedingChapter

    4 Citations (Scopus)


    This paper explores performing identifiability analysis on the equivalent circuit model (ECM) parameters of an electric machine (EM) using its impedance response. When modelling the ECM of an EM for room temperature conditions, some of the ECM parameters can be obtained from the manufacturer's data. However, as the temperature of an EM increases this significantly changes the underlying physics (resistivity, capacitance and inductance) of machine parameters, therefore the manufacturers data become inaccurate for equivalent circuit modelling purposes. ECM parameters need to be obtained from the frequency response under the different temperature conditions. To achieve this a nonlinear optimisation scheme with constraints is proposed for the purpose of ECM parameter identification, whereby a temperature-dependent ECM is derived. This work has important applications in EM design and condition monitoring and provides a valuable precursor towards developing age-dependent models
    Original languageEnglish
    Title of host publication2014 UKACC International Conference on Control, CONTROL 2014 - Proceedings
    VolumeArticle number 6915176
    Publication statusPublished - 2014

    Bibliographical note

    This paper is not available on the repository. The paper was given at the 10th UKACC International Conference on Control, CONTROL 2014; Loughborough UniversityLoughborough; United Kingdom; 9 July 2014 through 11 July 2014


    • Asynchronous machinery
    • Circuit simulation
    • Circuit theory
    • Condition monitoring
    • Equivalent circuits
    • Frequency response
    • Manufacture
    • Nonlinear programming
    • Supply chains


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