Title :
Thermal Effects on Inductor Winding Resistance at High Frequencies
Author :
Ayachit, Agasthya ; Kazimierczuk, Marian K.
Author_Institution :
Wright State Univ., Dayton, OH, USA
Abstract :
This letter presents the effect of temperature on an inductor´s winding resistance at low and high frequencies. The ac-to-dc resistance ratio of the foil winding conductor obtained using Dowell´s equation is presented. For a foil winding with practical specifications, the winding ac resistance is derived and its nonlinear dependence on the overall temperature of the foil winding is presented and compared with that of winding dc resistance. The variation in winding ac resistance with change in frequency at different temperatures is analyzed and their charateristics are observed.
Keywords :
conductors (electric); electric resistance; high-frequency effects; losses; power inductors; transformer windings; Dowell´s equation; ac-to-dc resistance ratio; foil winding conductor; high-frequency power inductor; inductor winding resistance; thermal effect; winding ac resistance; Conductors; Proximity effects; Resistance; Skin; Skin effect; Temperature; Windings; Dowell's equation; Electromagnetics; high-frequency power inductors; proximity effect; skin effect; thermal effects; winding loss; winding resistance;
Journal_Title :
Magnetics Letters, IEEE
DOI :
10.1109/LMAG.2013.2286582
