Semi-Analytical Method for Evaluating Magnetic Properties of SMC Based on Homogenization Model

IF 2.1 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Magnetics Pub Date : 2024-09-25 DOI:10.1109/TMAG.2024.3467670

Xuanzhe Zhao;Dianhai Zhang;Ziyan Ren;Kaimeng Shi;Yanli Zhang;Chang-Seop Koh

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Abstract

A semi-analytical method is presented in this article for evaluating the magnetic properties of soft magnetic composites (SMCs), and the quantitative structure-activity relationship between microstructural parameters and macroscopic magnetic properties of SMCs is investigated. First, a new homogenization model is developed with the objective of characterizing the microstructure of SMC. The concepts of insulating layer, pore, and surface roughness structure are introduced. Meanwhile, the thickness of the insulating layer is calculated using the least square, the mass density and volume fraction of the particles are determined using a discrete element method (DEM), and the surface roughness of the particles is characterized using a periodic square waveform. Then, by analyzing the relationship between the microstructural parameters and magnetic properties, analytical expressions are derived to realize the evaluation of the macroscopic permeability and eddy current loss of the SMC. Finally, the SMC-prepared samples are tested by the dc magnetization method and ring sample method, respectively, to verify the reliability of the proposed semi-analytical method by comparing the experimental and evaluation results.

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基于均质化模型的 SMC 磁性能评估半解析法

本文提出了一种评估软磁复合材料（SMC）磁性能的半分析方法，并研究了 SMC 的微观结构参数与宏观磁性能之间的定量结构-活性关系。首先，以表征 SMC 的微观结构为目标，建立了一个新的均质化模型。引入了绝缘层、孔隙和表面粗糙度结构的概念。同时，绝缘层的厚度用最小二乘法计算，颗粒的质量密度和体积分数用离散元素法（DEM）确定，颗粒的表面粗糙度用周期性方波表征。然后，通过分析微结构参数与磁性能之间的关系，推导出分析表达式，从而实现对 SMC 的宏观磁导率和涡流损耗的评估。最后，分别用直流磁化法和环样品法测试了制备的 SMC 样品，通过对比实验和评估结果，验证了所提出的半分析方法的可靠性。

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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.

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