DocumentCode
1178025
Title
Exact Minimization of Energy Functional for NR Method With Line-Search Technique
Author
Okamoto, Yoshifumi ; Fujiwara, Koji ; Himeno, Ryutaro
Author_Institution
Res. Center of Appl. Electromagn. Energy, Doshisha Univ., Kyotanabe
Volume
45
Issue
3
fYear
2009
fDate
3/1/2009 12:00:00 AM
Firstpage
1288
Lastpage
1291
Abstract
The line-search technique was usually introduced to the Newton-Raphson (NR) method in order to improve the convergence characteristic of nonlinear magnetic field analysis with the toughness magnetic nonlinearlity. In this paper, we proposed the NR method combined with the optimal step size using exact functional minimization in every nonlinear iteration. The convergence process and computation time were investigated, and compared with the conventional line-search technique using the approximate functional minimization.
Keywords
Newton-Raphson method; convergence of numerical methods; electric machines; magnetic shielding; NR method; Newton-Raphson method; computation time; convergence characteristics; exact energy functional minimization; line-search technique; magnetic shielding model; magnetic toughness; nonlinear magnetic field analysis; Energy functional; Newton–Raphson (NR) method; exact minimization; line-search; nonlinear magnetic field analysis;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2009.2012599
Filename
4787499
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