Measurement and Modelling of Hysteresis Curves for Nonlinear Permanent Magnets at Different Inclination Angles

被引：1

作者：

Ibrayeva, Anar ^{[1
]}

Lind, Emil ^{[1
]}

Silva, Marcelo D. ^{[1
]}

Ghorai, Sagar ^{[2
]}

Eriksson, Sandra ^{[1
]}

机构：

[1] Uppsala Univ, Dept Elect Engn, S-75237 Uppsala, Sweden

[2] Uppsala Univ, Dept Mat Sci & Engn, S-75103 Uppsala, Sweden

来源：

2023 IEEE INTERNATIONAL MAGNETIC CONFERENCE, INTERMAG | 2023年

基金：

瑞典研究理事会;

关键词：

Alnico magnets; BH curve; Demagnetization; Permanent Magnet; Recoil Line;

D O I：

10.1109/INTERMAG50591.2023.10265100

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the measurement results of the BH/MH curves of the Alnico 8 (LNGT40) with recoil loops and a mathematical model for the calculation of the average magnetic flux density in a cubic permanent magnet. The measurements were performed with a Vibrating Sample Magnetometer (VSM). The magnet samples have a cubic shape with 3 mm sides. BH curves in preferred (easy) and transverse directions and recoil loops were measured and compared to Alnico 9 (LNGT72) as well as to the data from the supplier. The load line of the cubic magnet in 0 A/m applied magnetic field was found. A mathematical model was developed which can approximate the MHa curve for an applied field with an arbitrarily chosen angle between the field and easy axis, given MHa curves for 0 degrees and 90 degrees. Also, a simplified general model of a cubic permanent magnet in the air and calculation results of stored energy and hysteresis losses were presented.

引用

页数：5