Thermal Model of Litz Wire Toroidal Inductor Based on Experimental Measurements
Résumé
This paper proposes an experimental method to
investigate the thermal conduction model of a power electronics
toroidal inductor using Litz wire resin molded. Several
parameters of the model are unknown, and have to be identified
experimentally, among them the radial conductivity of the Litz
wire. It is also shown in this paper that the thermal model
necessitates a 2D representation. By comparing the identification
on several samples, it is possible to obtain the main parameters of
the thermal model, which can thus be used for optimization
during a design process.