磁悬浮飞轮用永磁偏置磁轴承漏磁分析  

Analysis and Study on Flux Leakage for Permanent Magnet Biased Magnetic Bearing in Magnetically Suspended Flywheel Application

作　　者：杨磊[1] 房建成[1] 韩邦成[1] 孙津济[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100083

出　　处：《轴承》2008年第2期24-28,共5页Bearing

基　　金：国防科工委民用航天科研专项(科工计[2004]1536)

摘　　要：磁悬浮飞轮用永磁偏置磁轴承的定转子气隙间存在漏磁现象,为了准确计算漏磁的大小,从而精确地对磁轴承进行磁路设计,利用有限元法对该现象进行了分析。通过ANSYS软件针对一台磁悬浮飞轮样机用径向磁轴承的磁场分布进行分析,提出了一种等效气隙漏磁系数的计算方法,得到样机用磁轴承的漏磁系数。样机试验结果表明,用这一方法计算得到的漏磁系数进行磁轴承参数设计及性能分析具有足够的精度,能够满足实际工程需要。The flux leakage in the air gap of the permanent magnet biased magnetic bearing in magnetically suspended flywheel application has a great effect on the performance of bearings. In order to calculate the flux leakage coefficient correctly, so as to analyze the configuration more accurately, the analysis on the flux leakage is done by the finite element method. The magnetic field distributing of a permanent magnet biased magnetic bearing is analyzed with ANSYS. The method is put forward to calculate equivalent flux leakage coefficient. The validities of the study and calculation are verified by the practical magnetic suspending flywheel motor experiments.

关 键 词：磁轴承 有限元分析 漏磁系数 计算方法 

分 类 号：TH133.3[机械工程—机械制造及自动化] O241.82[理学—计算数学]