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

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Title Characteristics Analysis of the Square Laminated Core under DC-biased Magnetization by the Fixed-point Harmonic-balanced FEM
Author Zhao, Xiaojun; Li, Lin; Lu, Junwei; Cheng, Zhiguang; Lu, Tiebing
Publication Title Proceedings of COMPUMAG2011
Editor Norio Takahashi
Year Published 2011
Place of publication Sydney
Publisher ICS
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 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.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1109/TMAG.2011.2174776
Conference name COMPUMAG2011
Location Sydney
Date From 2011-07-12
Date To 2011-07-15
URI http://hdl.handle.net/10072/43559
Date Accessioned 2012-01-16; 2012-03-12T05:38:00Z
Research Centre Queensland Micro and Nanotechnology Centre
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Electrical and Electronic Engineering
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1

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