Comprehensive magnetic properties measurement of the laminated silicon steel by 3-D magnetic tester

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Journal Article
International Journal of Applied Electromagnetics and Mechanics, 2017, 55 (S1), pp. S177 - S191
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© 2017 - IOS Press and the authors. All rights reserved. In this paper, a novel three-dimensional (3-D) magnetic tester with symmetrical orthogonal excitation structure and cubic field-metric sensing structure is designed and analyzed. Automatic measurement system, which includes feedback control method, harmonics compensation, and automatic data processing is developed for the 3-D magnetic tester. In order to improve the measurement precision, cross effects of the magnetic fields in three principal directions are concerned, and error mitigation methods which fit for different excitation models are proposed. Magnetic properties of typical grain-oriented (GO) and non-grain-oriented (NGO) laminated silicon steel specimens under alternating and rotating excitations are measured and analyzed by using the designed 3-D magnetic tester.
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