Model of laminated ferromagnetic cores for loss prediction in electrical machines

P. Rasilo, E. Dlala, K. Fonteyn, Jenni Pippuri, A. Belahcen, A. Arkkio

    Research output: Contribution to journalArticleScientificpeer-review

    32 Citations (Scopus)

    Abstract

    An iron-loss model for laminated ferromagnetic cores of electrical machines is presented and applied to estimate the core losses of an induction machine with finite-element analysis. Skin effect in the cross section of the core lamination is modelled using a set of sinusoidal basis functions while locally considering both the hysteretic material properties and the excess field caused by domain wall motion. After spatial and time discretisation, a single non-linear equation system is obtained. An accurate vector Preisach model, the differential reluctivity tensor and the Newton–Raphson method guarantee excellent convergence of the iteration procedure. Results from the model correspond well to iron-loss data obtained by measurements.
    Original languageEnglish
    Pages (from-to)580-588
    Number of pages9
    JournalIET Electric Power Applications
    Volume5
    Issue number7
    DOIs
    Publication statusPublished - 2011
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Iron
    Skin effect
    Domain walls
    Nonlinear equations
    Tensors
    Materials properties
    Finite element method

    Keywords

    • Newton-Raphson method
    • asynchronous machines
    • finite element analysis
    • laminations
    • losses
    • machine theory
    • magnetic cores
    • nonlinear equations
    • skin effect

    Cite this

    Rasilo, P. ; Dlala, E. ; Fonteyn, K. ; Pippuri, Jenni ; Belahcen, A. ; Arkkio, A. / Model of laminated ferromagnetic cores for loss prediction in electrical machines. In: IET Electric Power Applications. 2011 ; Vol. 5, No. 7. pp. 580-588.
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    abstract = "An iron-loss model for laminated ferromagnetic cores of electrical machines is presented and applied to estimate the core losses of an induction machine with finite-element analysis. Skin effect in the cross section of the core lamination is modelled using a set of sinusoidal basis functions while locally considering both the hysteretic material properties and the excess field caused by domain wall motion. After spatial and time discretisation, a single non-linear equation system is obtained. An accurate vector Preisach model, the differential reluctivity tensor and the Newton–Raphson method guarantee excellent convergence of the iteration procedure. Results from the model correspond well to iron-loss data obtained by measurements.",
    keywords = "Newton-Raphson method, asynchronous machines, finite element analysis, laminations, losses, machine theory, magnetic cores, nonlinear equations, skin effect",
    author = "P. Rasilo and E. Dlala and K. Fonteyn and Jenni Pippuri and A. Belahcen and A. Arkkio",
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    Model of laminated ferromagnetic cores for loss prediction in electrical machines. / Rasilo, P.; Dlala, E.; Fonteyn, K.; Pippuri, Jenni; Belahcen, A.; Arkkio, A.

    In: IET Electric Power Applications, Vol. 5, No. 7, 2011, p. 580-588.

    Research output: Contribution to journalArticleScientificpeer-review

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    T1 - Model of laminated ferromagnetic cores for loss prediction in electrical machines

    AU - Rasilo, P.

    AU - Dlala, E.

    AU - Fonteyn, K.

    AU - Pippuri, Jenni

    AU - Belahcen, A.

    AU - Arkkio, A.

    PY - 2011

    Y1 - 2011

    N2 - An iron-loss model for laminated ferromagnetic cores of electrical machines is presented and applied to estimate the core losses of an induction machine with finite-element analysis. Skin effect in the cross section of the core lamination is modelled using a set of sinusoidal basis functions while locally considering both the hysteretic material properties and the excess field caused by domain wall motion. After spatial and time discretisation, a single non-linear equation system is obtained. An accurate vector Preisach model, the differential reluctivity tensor and the Newton–Raphson method guarantee excellent convergence of the iteration procedure. Results from the model correspond well to iron-loss data obtained by measurements.

    AB - An iron-loss model for laminated ferromagnetic cores of electrical machines is presented and applied to estimate the core losses of an induction machine with finite-element analysis. Skin effect in the cross section of the core lamination is modelled using a set of sinusoidal basis functions while locally considering both the hysteretic material properties and the excess field caused by domain wall motion. After spatial and time discretisation, a single non-linear equation system is obtained. An accurate vector Preisach model, the differential reluctivity tensor and the Newton–Raphson method guarantee excellent convergence of the iteration procedure. Results from the model correspond well to iron-loss data obtained by measurements.

    KW - Newton-Raphson method

    KW - asynchronous machines

    KW - finite element analysis

    KW - laminations

    KW - losses

    KW - machine theory

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    KW - nonlinear equations

    KW - skin effect

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