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永磁偏置径向磁轴承的原理分析与参数设计

, PP. 127-134

Keywords: 永磁偏置径向磁轴承,等效磁路,数学模型,参数设计,有限元仿真,实验

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Abstract:

为克服现有永磁偏置径向磁轴承的缺陷,研究了一种磁悬浮高速电动机用永磁偏置径向磁轴承,利用等效磁路法分析其结构及工作原理,得出了径向悬浮力的数学模型,并对数学模型进行了线性化处理,得出了其径向力-位移系数和力-电流系数。给出了磁极面积、控制绕组、定转子结构等主要参数的设计方法,并制作了实验样机,对样机进行了三维有限元仿真分析和动静态悬浮实验。理论研究和实验结果表明,该型磁轴承转子磁滞损耗小,结构紧凑,控制简单,悬浮性能良好,给出的参数设计方法合理。

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