Reduction of eddy current loss in magnetoplated wire
Author:
Mizuno Tsutomu,Enoki Shigemi,Suzuki Takayuki,Asahina Takashi,Noda Masahiro,Shinagawa Hiroki
Abstract
PurposeThe purpose of this paper is to reduce eddy current loss in a wire that is affected by an alternating field passing through it. This allows the efficiency of transformers to be upgraded and the quality factor in coils to be increased.Design/methodology/approachThe use of a magnetoplated wire (MPW) is proposed to reduce eddy current loss in a wire. An MPW is a copper wire (COW) whose circumference is plated with a magnetic thin film. In additional, the theoretical equation for eddy current loss in an MPW is derived for ease of analysis.FindingsThe eddy current loss in an MPW is calculated as a function of the relative permeability and resistivity of its magnetic thin film to reduce the resistance due to the proximity effect of a coil. The eddy current loss in an MPW whose magnetic thin film has a relative permeability of 500 and a resistivity of 0.12 μΩm can be reduced to 4 percent that of COW at a frequency of 1 MHz.Originality/valueThe use of MPW can be expected to upgrade the efficiency of transformers and to increase the quality factor in coils.
Subject
Applied Mathematics,Electrical and Electronic Engineering,Computational Theory and Mathematics,Computer Science Applications
Reference8 articles.
1. Acero, J., Hernandez, P.J., Burdio, J.M., Alonso, R. and Barragan, L.A. (2005), “Simple resistance calculation in litz‐wire planar winding for induction cooking appliances”, IEEE Transaction on Magnetics, Vol. 41 No. 4, pp. 1280‐7. 2. Lammeraner, J. and Stafl, M. (1964), Eddy Current, Iliffe Book Ltd, London, pp. 91‐8. 3. Lavers, J.D. and Bolborici, V. (1999), “Loss comparison in the design of high frequency inductors and transformers”, IEEE Transaction on Magnetics, Vol. 35 No. 5, pp. 3541‐3. 4. Mclachlan, N.W. (1954), Bessel Function for Engineer, 2nd ed., Oxford at the Clarendon Press, London, pp. 137‐52. 5. Mizuno, T., Enoki, S., Hayashi, T., Asahina, T. and Shinagawa, H. (2007a), “Extending the linearity range of eddy‐current displacement sensor with magnetoplated wire”, IEEE Transaction on Magnetics, Vol. 43 No. 2, pp. 543‐8.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|