EDDY-CURRENT POWER LOSS IN TOROIDAL CORES WITH RECTANGULAR CROSS-SECTION

Citation
Kv. Namjoshi et al., EDDY-CURRENT POWER LOSS IN TOROIDAL CORES WITH RECTANGULAR CROSS-SECTION, IEEE transactions on magnetics, 34(3), 1998, pp. 636-641
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
ISSN journal
00189464
Volume
34
Issue
3
Year of publication
1998
Pages
636 - 641
Database
ISI
SICI code
0018-9464(1998)34:3<636:EPLITC>2.0.ZU;2-U
Abstract
In this paper, we investigate eddy-current power loss in toroidal core s with a rectangular cross section. Are analytical method is used in w hich the field variables are. expressed in terms of products of Bessel functions and trigonometric functions. A closed-form expression is de rived for the power loss. The influence of various parameters such as skin depth and core dimensions over a wide range is discussed, Simplif ied expressions far the power loss at special cases such as very small and very large skin depths are provided, A comparison with measured v alues is presented.