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    首頁> 外文期刊>IEEE Transactions on Magnetics >Subdomain Method for Permanent Magnet Biased Homo-Polar Radial Magnetic Bearing
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    Subdomain Method for Permanent Magnet Biased Homo-Polar Radial Magnetic Bearing

    機譯:永磁偏置同極徑向電磁軸承的子域方法

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    摘要

    This paper presents an analytical model based on the subdomain method and conformal mapping method for predicting the performance of the permanent magnet (PM) biased homo-polar radial magnetic bearing (HRMB). Due to the homo-polar PM flux field of HRMB, the subdomain method combined with the periodic boundary condition is applied to obtain PM flux field distribution. The saddle winding is treated as a current sheet, while the rotor eccentricity is taken into account with a simple relative permeance model. The conformal mapping method is employed to obtain ending field distribution of HRMB. The developed analytical model is validated by 3-D finite element analysis. It is shown that the coupling effect between two radial freedoms is negligible. Ultimately, the parameters of HRMB are analytically optimized, while the predicted result from proposed analytical model is compared with prototype’s experiment results.
    機譯:本文提出了一種基于子域方法和共形映射方法的分析模型,用于預測永磁(PM)偏置同極性徑向磁軸承(HRMB)的性能。由于HRMB的同極性PM磁通場,將子域方法與周期邊界條件結合起來,得到PM磁通場分布。鞍形繞組被視為電流表,而轉子偏心率則通過簡單的相對磁導率模型加以考慮。采用保形映射方法獲得HRMB的終止場分布。通過3D有限元分析驗證了開發的分析模型。結果表明,兩個徑向自由度之間的耦合作用可忽略不計。最終,對HRMB的參數進行了分析優化,同時將所提出的分析模型的預測結果與原型的實驗結果進行了比較。

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