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Analytical Modeling of Permanent Magnet Biased Axial Magnetic Bearing With Multiple Air Gaps

机译:带有多个气隙的永磁偏置轴向磁轴承的解析模型

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摘要

This paper proposes a permanent magnet (PM) biased axial magnetic bearing (MB) with multiple air gaps. However, the inherent complex structure makes finite-element analysis (FEA) very time-consuming. For the sake of simplifying the analysis, an equivalent magnetic circuit model together with the conformal mapping method and Laplace's equation is developed. The conformal mapping method is employed to obtain the flux distributions in rectangular air gaps by accounting fringing effect, while the Laplace's equation is used to predict the leakage flux surrounding PM rings. The developed analytical model is validated by FEA. Consequently, the design parameters in the axial MB are analytically determined.
机译:本文提出了一种具有多个气隙的永磁(PM)偏置轴向磁轴承(MB)。但是,固有的复杂结构使有限元分析(FEA)非常耗时。为了简化分析,开发了等效磁路模型以及保形映射方法和拉普拉斯方程。通过考虑边缘效应,采用保形映射方法获得矩形气隙中的通量分布,而使用拉普拉斯方程预测PM环周围的泄漏通量。 FEA验证了开发的分析模型。因此,轴向MB中的设计参数可以通过分析确定。

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