| 磁力轴承旋转电磁场的有限元计算及分析 |
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| 引用本文： | 丁国平,周祖德,胡业发.磁力轴承旋转电磁场的有限元计算及分析[J].武汉理工大学学报,2012,34(1):114-117. |
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| 作者姓名： | 丁国平 周祖德 胡业发 |
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| 作者单位： | 武汉理工大学机电工程学院,武汉,430070 |
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| 基金项目： | 武汉市青年科技晨光计划，湖北省自然科学基金 |
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| 摘 要： | 建立了磁力轴承旋转电磁场的二维有限元模型并进行求解,对不同转速和线圈电流条件下的磁力线分布以及气隙磁通密度进行了分析。结果表明:在NNSS型磁极布置形式中,转子旋转时,涡流场引起磁力线变形,导致一对磁极内的磁力线非对称分布,一极增磁,一极退磁,并在磁极对之间产生较强的磁耦合;当转子旋转时,气隙磁通密度同时受到线圈电流激励的主磁场和转子转速的影响。
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| 关 键 词： | 磁力轴承 旋转电磁场 有限元 |
Calculation and Analysis of Magnetic Bearings Rotating Magnetic Field with Finite Element Method |
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| DING Guo-ping
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ZHOU Zu-de
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HU Ye-fa.Calculation and Analysis of Magnetic Bearings Rotating Magnetic Field with Finite Element Method[J].Journal of Wuhan University of Technology,2012,34(1):114-117. |
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| Authors: | DING Guo-ping ZHOU Zu-de HU Ye-fa |
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| Affiliation: | (School of Electromechanical Engineering,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | Magnetic bearings’ rotating magnetic field is modeled and solved with 2D finite element method.Flux lines distribution and air-gap flux density are analyzed under different rotating speeds and coil currents conditions.It is concluded that asymmetric flux lines distribution in each pair of magnet poles is caused by eddy currents and flux density increases in one pole while it decrease in another pole with NNSS configuration.Magnetic field coupling is produced between adjacent magnet pairs.Air-gap flux density is determined by coil currents and rotating speeds. |
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| Keywords: | magnetic bearings rotating magnetic field finite element method |
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