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Browse Journals & Magazines > Power Delivery, IEEE Transact ...> Volume:26 Issue:1 Help

Analysis of the DC Bias Phenomenon by the Harmonic Balance Finite-Element Method

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5 Author(s)
Xiaojun Zhao ; Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Baoding, China ; Junwei Lu ; Lin Li ; Zhiguang Cheng
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An Epstein frame-like core model is set up to study the dc-biased problem of the power transformer. The harmonic phenomenon of the model under the dc bias condition is investigated by using the harmonic-balance finite-element method (HBFEM). The harmonic-balance finite element equation is coupled with the external electric circuit. Each harmonic component of the magnetizing current and magnetic field can be calculated directly in the harmonic frequency domains. Comparing the calculated results with the experimental data shows consistency. The dc bias effects on the magnetizing current and the magnetic induction are analyzed through the harmonic solutions.

Published in:
Power Delivery, IEEE Transactions on  (Volume:26 ,  Issue: 1 )

Date of Publication: Jan. 2011

Page(s):
475 - 485
ISSN :
0885-8977
INSPEC Accession Number:
11704433
Digital Object Identifier :
10.1109/TPWRD.2010.2056709
Product Type:
Journals & Magazines
Date of Current Version :
23 December 2010
Issue Date :
Jan. 2011
Sponsored by :
IEEE Power & Energy Society

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