论文标题
在永久磁铁电流损失中的微观结构作用
Microstructure Role in Permanent Magnet Eddy Current Losses
论文作者
论文摘要
研究了颗粒微观结构在永久磁铁中对涡流损失的影响。定义了电导率的数值均质化程序。然后，得出了能够捕获几何和材料依赖的主要特征的均质电导率的近似简单分析模型。最后，给出了涡流损失分析计算，并得出并讨论了固定传导极限和高级皮肤效应极限损失的两个渐近表达式。
The impact of granular microstructure in permanent magnets on eddy current losses are 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 eddy current losses analytical calculations are given, and the two asymptotic expressions for losses in the stationary conduction limit and advanced skin effect limit are derived and discussed.
