Spatial Distribution Analysis of the Magnetic Domain Structures of Grain-Oriented Electrical Steels Using a Short-Term 2-D Fourier Transform Method

IF 2.1 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Magnetics Pub Date : 2024-09-27 DOI:10.1109/TMAG.2024.3469287

Yusuke Kawamura

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引用次数: 0

Abstract

Grain-oriented electrical steels (GOESs), the key components of transformers, should exhibit low energy losses and noise. Hence, the iron loss and magnetostriction (MS), which are determined by the magnetic domain structures of GOESs, should be minimized. Especially, the spacing of the 180° magnetic domain walls and angles, which dominate the magnetic properties of GOESs, should be modulated. In a previous study, a method to quantify the wall spacing and angle of a 180° magnetic domain simultaneously in GOESs based on 2-D Fourier transform (2DFT) was proposed. However, this method is difficult to apply to a large number of grains. In addition, the spatial information before the analysis is eliminated from the post-analysis information. To overcome these limitations, an extension of the 2DFT method is proposed; this extended method can be used to analyze the width and angle of a 180° magnetic domain wall while maintaining the spatial information. The results obtained using the proposed method agree well with the experimental results, demonstrating the effectiveness of the proposed method.

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利用短期二维傅里叶变换方法分析晶粒导向电工钢磁畴结构的空间分布情况

晶粒导向电工钢（GOES）是变压器的关键部件，应具有低能量损耗和低噪音的特点。因此，应尽量减少铁损和磁致伸缩（MS），这是由 GOES 的磁畴结构决定的。特别是，应当对主导 GOES 磁特性的 180° 磁畴壁和磁畴角的间距进行调节。之前的研究提出了一种基于二维傅里叶变换（2DFT）的方法，可以同时量化 GOES 中 180°磁畴的壁间距和角度。然而，这种方法很难应用于大量的晶粒。此外，分析前的空间信息会从分析后的信息中剔除。为了克服这些局限性，提出了 2DFT 方法的扩展；这种扩展方法可用于分析 180° 磁畴壁的宽度和角度，同时保留空间信息。使用所提方法得出的结果与实验结果非常吻合，证明了所提方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Magnetics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

14.30%

发文量

565

审稿时长

4.1 months

期刊介绍： Science and technology related to the basic physics and engineering of magnetism, magnetic materials, applied magnetics, magnetic devices, and magnetic data storage. The IEEE Transactions on Magnetics publishes scholarly articles of archival value as well as tutorial expositions and critical reviews of classical subjects and topics of current interest.