Rini Patel, S. Premkumar, Apratim Ambade, H. A. Mangalvedhekar, R. Rajan, R. I. Bakhtsingh
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AC resistance calculation of litz wire and its modeling with FEMM
This paper includes calculation of the AC resistance of litz wire in a wide frequency range for an optimal strand diameter by two methods and compared. Calculations of AC resistance for these methods are carried out by using mathematical software SCILAB. Analysis of skin effect is carried out with FEMM. Effect of pitch on AC resistance is analyzed. The results for AC resistance, skin effect and analysis of skin effect presented in this paper are compared with FEM simulations. A graphical comparison of the theoretical calculation and FEM simulation of ac resistance with frequency is done and found to be in good agreement.
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