期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 529, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2021.167854
关键词
Magnetostriction model; Magneto-mechanical modeling; Jiles-Atherton theory; Hysteresis and dynamic losses
资金
- National Natural Science Foundation of China, China [51777055, 92066206, 51690181]
This paper presents a comprehensive model of magnetostriction in amorphous material, which can accurately simulate magnetostriction, magnetic hysteresis loops, and vibration displacements. The model is successfully applied in coupled magneto-mechanical field calculations.
Due to its favorable properties of low core loss and high saturation magnetic flux density, amorphous material is widely used as the core material of low and medium frequency transformers. However, its magnetostriction is much higher than that of grain-oriented sheet steel, a very common material for conventional transformers, resulting in high acoustic noises. This paper proposes a comprehensive model of magnetostriction in amorphous material based on the interdependence between magnetostriction and magnetization by combining the isotropic magnetostriction effect and Jiles-Atherton energy balance theory. Incorporated in coupled magneto-mechanical field calculation, the proposed model can correctly simulate the butterfly loops of magnetostriction, magnetic hysteresis loops and vibration displacements. The theoretical results of magnetostriction characteristic are verified by both single sheet test and the experimental results of amorphous transformer prototype.
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