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Analysis and Experiment of Eddy Current Loss in Radial Magnetic Bearings with Solid Rotor

机译：实心转子径向电磁轴承涡流损耗的分析与实验。

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摘要

In order to reduce power losses for the aerospace applications, this paper analyzes the eddy current losses produced by high-speed rotating solid rotor core magnetic bearings of magnetically suspended control & sensitive gyroscope (MSCSG). An analytical model of the eddy current loss of a solid rotor radial magnetic bearing (RMB) is presented. Considering the difference between NNNN and NSNS magnetic circuits of RMB, the magnetic field expressions of stator magnetic poles are listed. The magnetic field of stator poles is replaced by Fourier series expansion. According to the magnetic field distribution around the magnetic pole surface and the boundary conditions of the rotor surface, the mathematical expression of eddy current loss is obtained. The measurement method of rotational power loss in radial magnetic bearing is proposed, and the results of the theoretical analysis are verified by experiments in the prototype MSCSG. The experimental results show the correctness of calculation results. Eddy current loss models and test methods provide theoretical support for analyzing eddy current losses in solid rotors and reducing power consumption.
机译：为了减少航空航天应用的功率损耗，本文分析了磁悬浮控制和灵敏陀螺仪（MSCSG）的高速旋转实心转子芯磁轴承产生的涡流损耗。提出了固体转子径向电磁轴承（RMB）涡流损耗的解析模型。考虑到RMB的NNNN和NSNS磁路的区别，列出了定子磁极的磁场表达式。定子极的磁场被傅立叶级数展开所代替。根据磁极表面周围的磁场分布和转子表面的边界条件，得到了涡流损耗的数学表达式。提出了径向磁轴承旋转功率损耗的测量方法，并通过MSCSG样机的实验验证了理论分析的结果。实验结果表明了计算结果的正确性。涡流损耗模型和测试方法为分析固体转子中的涡流损耗和降低功耗提供了理论支持。

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