C.R. SULLIVAN, "Optimal Choice for Number of Strands in a Litz-Wire Transformer Winding", IEEE Power Electronics Specialists Conference, June 1997.
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Article : [ART177]
Titre : C.R. SULLIVAN, Optimal Choice for Number of Strands in a Litz-Wire Transformer Winding, IEEE Power Electronics Specialists Conference, June 1997.
Cité dans : [DIV325] T. LEQUEU, Informations diverses sur les fils de cuivre AWG, LITZ et méplat, octobre 2013.
Auteur : Charles R. Sullivan
Adresse : Thayer School of Engineering, Dartmouth College, Hanover, NH 03755-8000
Lien : mailto:chrs@dartmouth.edu
Lien : private/SULLIVAN.pdf - 22 pages, 621 Ko, copie des pages WEB.
Site : http://engineering.dartmouth.edu/inductor
Site : http://www.dartmouth.edu/~sullivan/litzwire/litz.html
Info : Paper presented at the PESC '97, Technical Program, Plenary Session 1, Monday, June 23, 1997, St. Louis MO.
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 insulation thickness is combined with standard analysis of proximity-effect losses.
INTRODUCTION
SKIN EFFECT, PROXIMITY EFFECT, AND LITZ WIRE
DC RESISTANCE FACTORS
NUMBER OF STRANDS FOR MINIMUM LOSS
DESIGN EXAMPLES AND SUB-OPTIMAL STRANDING
EXPERIMENTAL RESULTS
CONCLUSION
ACKNOWLEDGEMENTS
APPENDIX
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