Microstructure Role in Permanent Magnet Eddy Current Losses

被引：1
|
作者：
Perna, Salvatore [1 ]
Schrefl, Thomas [2 ]
Serpico, Claudio [1 ]
Fischbacher, Johann [2 ]
Del Pizzo, Andrea [1 ]
机构：
[1] Univ Naples Federico II, Dept Elect Engn & Informat Technol, I-80125 Naples, Italy
[2] Danube Univ Krems, Dept Integrated Sensor Syst, A-3500 Wiener Neustadt, Austria
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2021年 / 57卷 / 02期
关键词：
Eddy currents; homogenization; losses;
D O I：
10.1109/TMAG.2020.3013556
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：
The impact of granular microstructure on permanent magnets on eddy current lasses is investigated. A numerical homogenization procedure for electrical conductivity is defined. Then, an approximated simple analytical model for the homogenized conductivity able to capture the main features of the geometrical and material dependences is derived. Finally, analytic calculations of eddy current losses are given, and the two asymptotic expressions for losses in the stationary conduction limit and advanced skin effect limit are derived and discussed.
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页数：5
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