Variable-Temperature Magnetic Properties Measurement and Improved Temperature-Coupled Bertotti Core-Loss Modeling of Fe-Based Amorphous Alloy

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Magnetics Pub Date : 2026-10-01 Epub Date: 2026-03-25 DOI:10.1109/TMAG.2026.3696280

Jialin Li;Yu Dou;Jiapeng Zhou;Shuaichao Yue;Tao Chen;Yongjian Li

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引用次数: 0

Abstract

Fe-based amorphous alloys are important for medium- and high-frequency magnetic devices. This work investigates the variable-temperature magnetic properties and core loss of Fe-based amorphous ribbon strips and develops a temperature-coupled Bertotti (TCB) model for loss prediction under coupled frequency–temperature conditions. In this article, the magnetic properties and core loss of Fe-based amorphous alloy were measured from

$25~^{\circ }$

C to

$100~^{\circ }$

C and from 50 Hz to 3 kHz by the Epstein-frame method. The experimental results show that temperature significantly affects the magnetization and loss characteristics. With increasing temperature, the magnetization curve shifts rightward, the peak permeability increases, and the hysteresis-loop area as well as the total loss generally decreases. Based on the Bertotti loss-separation framework, a temperature-coupled core loss model is established, and temperature dependence is incorporated at the loss components. The accuracy and effectiveness of the proposed model are verified using experimental results under varying temperatures and a wide frequency range.

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铁基非晶合金变温磁性能测量及改进的温度耦合Bertotti铁心损耗模型

铁基非晶合金是中高频磁性器件的重要材料。本文研究了铁基非晶带的变温磁性和磁芯损耗，并建立了一个温度耦合Bertotti （TCB）模型，用于频率-温度耦合条件下的损耗预测。本文用Epstein-frame法测量了铁基非晶合金在$25~^{\circ}$ C ~ $100~^{\circ}$ C和50 Hz ~ 3 kHz范围内的磁性能和铁芯损耗。实验结果表明，温度对材料的磁化特性和损耗特性有显著影响。随着温度的升高，磁化曲线右移，磁导率峰值增大，磁滞回线面积和总损耗普遍减小。基于Bertotti损耗分离框架，建立了温度耦合铁芯损耗模型，并在损耗分量处考虑了温度依赖性。在变温度和宽频率范围下的实验结果验证了该模型的准确性和有效性。

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.