Optimal choice for number of strands in a litz-wire transformer winding
- 1 March 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 14 (2) , 283-291
- https://doi.org/10.1109/63.750181
Abstract
The number of strands to minimize loss in a litz-wire transformer winding is determined. With fine stranding, the ac resistance factor decreases, but dc resistance increases because insulation occupies more of the window area. A power law to model in- sulation thickness is combined with standard analysis of proximity-effect losses.Keywords
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