In this article, an analytical method is presented for modeling the complex air gap field distribution and the magnetic force of a novel permanent magnet (PM) bias hybrid magnetic thrust bearing (HMTB). This bearing has a very compact structure and is proposed to replace the traditional magnetic thrust bearings (MTBs) for high-speed rotor systems. The proposed method introduces the notion of the complicated air gap field, calculated from the Schwarz–Christoffel transformation of the air gap geometry, to take into account the effect of slot fringing and leakage. As a result, accurate solutions of the flux distribution and the bearing force can be obtained, which shows good agreement with the results of the finite-element method (FEM). The prototype of the HMTB is designed, analyzed, and tested. The results of the analytical model are compared with experimental data.

中文翻译：

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新型混合磁力推力轴承气隙磁场和轴承力的分析模型


本文提出了一种分析方法，用于对新型永磁体 (PM) 偏置混合磁力推力轴承 (HMTB) 的复杂气隙场分布和磁力进行建模。该轴承结构非常紧凑，建议取代高速转子系统中的传统磁力推力轴承（MTB）。该方法引入了复杂气隙场的概念，该概念是根据气隙几何形状的 Schwarz-Christoffel 变换计算得出的，以考虑狭缝边缘和泄漏的影响。结果，可以获得磁通分布和轴承力的精确解，这与有限元法（FEM）的结果吻合良好。 HMTB 原型进行了设计、分析和测试。将分析模型的结果与实验数据进行比较。