飞轮电池转子偏移对磁轴承性能的影响  

Effect of Flywheel Battery Rotor Skewing on Magnetic Bearing Performance

作　　者：汤双清[1,2] 宋文虎[1] 柯友文 黄鹏[1] 李庆东[1] 

机构地区：[1]三峡大学机械与动力学院,湖北宜昌443002 [2]三峡大学新能源微电网湖北省协同创新中心,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2017年第4期80-83,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金(51175297)

摘　　要：由于飞轮电池转子在高速运转时避免不了会产生一定的偏移,偏移会对飞轮电池磁轴承的刚度产生影响,为了更加清楚地知道其具体影响,本文介绍了自归位轴承的模型和磁力计算理论,同时借助有限元法,描述了转子在不同方向偏移下,磁轴承产生自归位磁力和磁轴承刚度的变化,最终得:随着转子偏移量的增大,磁轴承所受到自归位磁力也随之增大,其自归位效果良好;在转子刚刚发生偏移时,磁轴承刚度变化较大,随着转子偏移量增大磁轴承刚度逐步趋向稳定;转子产生径向位移时磁轴承刚度远小于产生轴向位移时的磁轴承刚度.The magnetic bearing stiffness will be affected by the flywheel battery rotor skewing, which can not be avoided when the flywheel battery rotor rotates at high speed. This article introduces the model of magnetic self-homing bearing and magnetic theory of computation in order to aware of the specific effects more clearly, and describes the change of homing magnetic produced from magnetic bearings and magnetic bearing stiffness when the rotor offsets in different directions by the finite element method. Finally, some conclusions are drawn as follows： As the rotor skewing increases, the magnetic force received from the magnetic bearing increases, which proved its good effect of self-homing. When the rotor is just shifted, the magnetic bearing stiffness change dramatically, which gradually becoming stable with the rotor skewing increases. Magnetic bearing stiffness with radial displacement of the rotor generated is much smaller than that with axial displace- ment of the rotor generated.

关 键 词：磁轴承 导体环 有限元 偏移 磁力 刚度 

分 类 号：TH133.3[机械工程—机械制造及自动化]