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Comparison of Power Loss and Magnetic Flux Distribution in Octagonal Wound Transformer Core Configurations
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 Title & Authors
Comparison of Power Loss and Magnetic Flux Distribution in Octagonal Wound Transformer Core Configurations
Cinar, Mehmet Aytac; Alboyaci, Bora; Sengul, Mehlika;
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 Abstract
In this paper, various configurations of octagonal wound transformer core topology, which has previously proved advantages on conventional wound cores, are studied. Each configuration has different joint types and different placement of joint zones on the core. Magnetic flux distributions and power losses of each configuration are analyzed and compared. Comparisons are based on both 2D&3D finite element simulations and experimental studies. The results show that, joint types and their placements on the core cause local flux accumulations and dramatically affect power loss of the core.
 Keywords
Transformer;Octagonal wound core;Joint gap;Flux distribution;Core loss;
 Language
English
 Cited by
 References
1.
J.J. Winders, Jr., Power Transformers Principles and Applications, Marcel Dekker, Inc., 2002.

2.
M. Jones, Comparison of the localized power loss and flux distribution in the butt and lap and mitred overlap corner configurations, IEEE Trans. Magnetics, 10, 1974, pp. 321-326. crossref(new window)

3.
A. Basak, C. Higgs, Flux distribution in three phase transformer cores with various T-joint geometries, IEEE Trans. Magnetics, 18, 1982, pp. 670-673. crossref(new window)

4.
G.E. Mechler, R.S. Girgis, Magnetic flux distributions in transformer core joints, IEEE Trans. Power Delivery, 15, 2000, pp. 198-203. crossref(new window)

5.
F. Loffler, T. Booth, H. Pfutzner, C. Bengtsson, K. Gramm, Relevance of step-lap joints for magnetic characteristics of transformer cores, Electric Power Applications, 142, 1995, pp. 371-378. crossref(new window)

6.
E.G. teNyenhuis, R.S. Girgis, G.F. Mechler, Other factors contributing to the core loss performance of power and distribution transformers, IEEE Trans. Power Delivery, 16, 2001, pp. 648-653. crossref(new window)

7.
I. Daut, A.J. Moses, Some effects of core building on localised losses and flux distribution in a three-phase transformer core assembled from POWERCORE strip, IEEE Trans. Magnetics, 26, 1990, pp. 2002-2004. crossref(new window)

8.
Y. -H. Chang, C. -H. Hsu, C. -P. Tseng, Magnetic Properties Improvement of Amorphous Cores Using Newly Developed Step-Lap Joints, IEEE Trans. Magnetics, 46, 2010, pp. 1791-1794. crossref(new window)

9.
T. Nakata, N. Takahashi, Y. Kawase, Magnetic performance of step-lap joints in distribution transformer cores, IEEE Trans. Magnetics, 18, 1982, pp. 1055-1057. crossref(new window)

10.
R.M. Del Vecchio et al., Transformer Design Principles, second ed., (CRC Press, 2010).

11.
I. Hernandez, J.C. Olivares-Galvan, P.S. Georgilakis, A Novel Octagonal Wound Core for Distribution Transformers Validated by Electromagnetic Field Analysis and Comparison With Conventional Wound Core, IEEE Trans. Magnetics, 46, 2010, pp. 1251-1258. crossref(new window)

12.
D.M. Ionel, M. Popescu, S.J. Dellinger, T.J.E. Miller, R.J. Heideman, M.I. McGilp, On the Variation With Flux and Frequency of the Core Loss Coefficients in Electrical Machines, IEEE Trans. Industry Applications, 42, 2006, pp. 658-667. crossref(new window)

13.
D.M. Ionel, M. Popescu, M.I. McGilp, T.J.E. Miller, S.J. Dellinger, R.J. Heideman, Computation of Core Losses in Electrical Machines Using Improved Models for Laminated Steel, IEEE Trans. Industry Applications, 43, 2007, pp. 1554-1564. crossref(new window)