Title :
A high frequency model for Litz wire for switch-mode magnetics
Author :
Lotfi, Ashraf W. ; Lee, Fred C.
Author_Institution :
Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
An analytical model which characterizes Litz wire over a wide frequency range is derived. The model overcomes the shortcomings of previous efforts and predicts the useful frequency range where substantial improvement over solid wire exists. Since the local proximity effects in the strands are taken into account, the degradation in performance at higher frequencies is easily predicted. The maximum useful frequency is obtained and verified by measurements
Keywords :
losses; proximity effect; skin effect; wires (electric); Litz wire; frequency range; high frequency model; losses; performance degradation; proximity effects; skin effect; switch-mode magnetics; Conductors; Current density; Current distribution; Frequency; Magnetic switching; Power electronics; Proximity effect; Skin effect; Solids; Wire;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.299045
