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pingchaochun

A novel approach for minimizing high-frequency transformer copperlosses
( o) K; S8 V# m' b! eVandelac, J.-P.; Ziogas, P.D.
7 a9 z3 d7 h. R; q9 z" s+ GPower Electronics, IEEE Transactions on
Volume 3, Issue 3, Jul 1988 Page(s):266 - 277
  ?6 f4 m, h, V  S" T  ODigital Object Identifier   10.1109/63.17944
Summary:A graphical and numerical method of calculating and minimizing losses in windings, that generalizes previous findings, has been introduced. Using electromagnetic theory and MMF diagrams in both space and time a method is proposed that provides insight into the mechanism of skin and proximity effect losses and that also yields quantitative results. Using this method, several winding geometries for various topologies are covered. The analysis and optimization process is experimentally verified using an interleaved flyback transformer. The mathematical treatment justifying the use of the field method and which is essential in arriving at any numerical result is presented are more general equations for the calculation of copper losses are derived. The relation between the fields in the transformer and copper losses is emphasized. Also, the tools necessary to derive optimization diagrams are provided
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' p5 d0 g$ ~  V' W! W. d5 w8 y. k+ e[ 本帖最后由 electronic 于 2008-4-12 02:09 编辑 ]-%-62500-%-

qiuwei_002

A novel approach for minimizing high-frequency transformer copper losses