Analysis of effective resistance and eddy-current losses in multiturn winding of high-frequency magnetic components

Author

Podoltsev, Alexander D. ; Kucheryavaya, Irina N. ; Lebedev, Boris B.

Author_Institution

Inst. of Electrodynamics, Nat. Acad. of Sci. of Ukraine, Kiev, Ukraine

Volume

39

Issue

1

fYear

2003

fDate

1/1/2003 12:00:00 AM

Firstpage

539

Lastpage

548

Abstract

This paper develops a numerical model for calculation of eddy-current losses in a multiturn winding of a high-frequency transformer. The model assumes periodic arrangement of conductors, and uses the repeat elementary cell concept. The paper proposes analytical expressions and graphic dependences to determine effective frequency-dependent resistance of the winding. It computes the leakage field in the transformer window, taking into consideration the effective magnetic permeability of the multiturn winding as a heterogeneous medium. Finally, it analyzes the values of the resistance at various frequencies for two types of winding (solid conductor winding and Litz wire winding) by numerical and experimental methods.

Keywords

current density; eddy current losses; electric resistance; high-frequency transformers; magnetic leakage; magnetic permeability; numerical analysis; skin effect; transformer windings; HF transformer; Litz wire winding; eddy-current losses; effective frequency-dependent resistance; effective magnetic permeability; high-frequency transformer; leakage field; multiturn winding; numerical model; skin effect; solid conductor winding; Analytical models; Conducting materials; Conductors; Frequency; Graphics; Magnetic analysis; Permeability; Proximity effect; Solids; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.806337

Filename

1179915