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  • Characteristics Analysis of the Square Laminated Core under DC-biased Magnetization by the Fixed-point Harmonic-balanced FEM

    Author(s)
    Zhao, Xiaojun
    Li, Lin
    Lu, Junwei
    Cheng, Zhiguang
    Lu, Tiebing
    Griffith University Author(s)
    Lu, Junwei
    Year published
    2011
    Metadata
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    Abstract
    The ferromagnetic core of power transformer is susceptible to DC bias and has special nonlinear and hysteretic characteristics under DC-biased magnetization. The DC bias test is carried out to obtain the DC-biasing magnetization curve of a square laminated core (SLC). The harmonic-balanced finite element method (HBFEM) is combined with the fixed-point technique to calculate the magnetic field in the laminated core under DC bias conditions by means of the measured DC-biasing magnetization curve. A locally convergent method in harmonic domain is presented to determine the fixed-point reluctivity, which can speed up the convergence ...
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    The ferromagnetic core of power transformer is susceptible to DC bias and has special nonlinear and hysteretic characteristics under DC-biased magnetization. The DC bias test is carried out to obtain the DC-biasing magnetization curve of a square laminated core (SLC). The harmonic-balanced finite element method (HBFEM) is combined with the fixed-point technique to calculate the magnetic field in the laminated core under DC bias conditions by means of the measured DC-biasing magnetization curve. A locally convergent method in harmonic domain is presented to determine the fixed-point reluctivity, which can speed up the convergence of harmonic solution. Computation of DC-biasing magnetic field in SLC is performed by means of normal and DC-biasing magnetization curves respectively. Comparison between computed and calculated results indicates DC-biasing magnetization curve should be adopted in calculation of magnetic field under DC-biased magnetization.
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    Conference Title
    Proceedings of COMPUMAG2011
    DOI
    https://doi.org/10.1109/TMAG.2011.2174776
    Subject
    Electrical and Electronic Engineering not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/43559
    Collection
    • Conference outputs

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