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Study of geometrical effects on the high frequency winding loss of low profile inductor design

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3 Author(s)
Cheng, D.K.W. ; Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong ; Mo, W.K. ; Lee, Y.S.

This paper summaries the geometrical effects on the winding loss performance of a low profile inductor with spiral coil. Relevant winding loss equations are derived and applied to an optimization algorithm that searches for the design that minimizes the total winding loss at a given core height and footprint area. It has been found that the curves of winding loss versus winding arrangement with different core height show a minimum loss at a critical winding arrangement and core height. Below or above these critical factors, the loss increases drastically. Finally, a new concept of critical frequency is developed to simplify the analysis of AC winding loss of spiral coil

Published in:

Power Electronics and Variable Speed Drives, 1998. Seventh International Conference on (Conf. Publ. No. 456)

Date of Conference:

21-23 Sep 1998

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