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An approach estimating the number of domain walls and eddy current losses in grain-oriented 3% Si-Fe tape wound cores

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1 Author(s)
Yo Sakaki ; Chiba University, Yayoi-Cho, Chiba, Japan

A method is presented for estimating the number of domain walls in grain-oriented 3% Si-Fe tape wound cores under sinusoidal flux conditions by extending the method developed in a study of the dynamic behavior of 50% Ni-Fe square-loop cores. The results show that the number of domain walls increases approximately with exciting frequency as f^{0.4 \sim 0.5} . The calculated eddy current loss based on the modified Pry and Bean equation and the obtained number of domain walls agree well with the measured loss.

Published in:

IEEE Transactions on Magnetics  (Volume:16 ,  Issue: 4 )