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

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3 Author(s)
A. D. Podoltsev ; Inst. of Electrodynamics, Nat. Acad. of Sci. of Ukraine, Kiev, Ukraine ; I. N. Kucheryavaya ; B. B. Lebedev

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.

Published in:

IEEE Transactions on Magnetics  (Volume:39 ,  Issue: 1 )