Affiliations: [a] Department of Basic Courses, Xi'an University of Science and Technology, Xi'an, Shaanxi, China | [b] State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an, Shaanxi, China
Correspondence:
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Corresponding author: Ling Xiao, Xi'an University of Science and Technology, No. 58, Yanta Road, Xi'an 710054, Shaanxi, China. E-mail:xiaoling@xust.edu.cn
Abstract: In this paper, a new numerical method based on the finite
element method (FEM) is presented to analyze magnetic properties and eddy
current losses in Fe-based soft magnetic composites (SMCs) from viewpoints
of nonlinear theory. In this method, SMCs are assumed to be composed of
homogeneous ferromagnetic particles (circular, hexagon) and insulating layer
with periodicity. The results show that the effective permeabilities in the
models with pores and defects are more than that with pores only. By
reducing the coating thickness, the eddy current loss was greatly suppressed
and the permeability improves largely. The calculation results in hexagon
model are consistent with the experimental value which can be used to design
the optimum prescription and parameters before the experiment.
Keywords: Soft magnetic composites, eddy current loss, permeability
