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| New Configuration Hybrid Radial Magnetic Bearing |
| Mei Lei, Deng Zhiquan, Zhao Xusheng, Wang Xiaolin |
| Nanjing University of Aeronautics and Astronautics Nanjing 210016 China |
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Abstract The configuration and operating principle of a hybrid radial magnetic bearing are introduced. This is a homo-polar hybrid radial magnetic bearing. It can reduce hysteresis loss so that a solid rotor can be used, which can increase the endurable speed of the rotor. The functional relationships among magnetic force, control current and rotor displacement are revealed by using the theory of equivalent magnetic circuit. The operating principle is verified by finite element simulation and experiment. It can levitate the rotor of motor up to 10 000r/min.
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Received: 12 June 2007
Published: 14 February 2014
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[1] Ehmann C, Sielaff T, Nordamann R. Comparison of active magnetic bearing with and without permanent magnet bias[C]. Proceeding of the Ninth International Symposium on Magnetic Bearings, 2004: 420-425.
[2] Reisinger M, Amrhein W, Silber S. Development of a low cost permanent magnet biased bearing[C]. Proceeding of the Ninth International Symposium on Magnetic Bearings, 2004: 366-371.
[3] Kenny A, Palazzolo A B. Single plane radial, magnetic bearings biased with poles containing permanent magnets[J]. Transactions of the ASME, 2003, 125(1): 178-185.
[4] 房建成, 孙津济. 一种磁悬浮飞轮用新型永磁偏置径向磁轴承[J]. 北京航空航天大学学报, 2006, (11)：1304-1307.
[5] 李冰, 邓智泉, 严仰光．一种新颖的永磁偏置三自由度电磁轴承[J]．南京航空航天大学学报, 2003, 35(1)：82-85．
Li Bing, Deng Zhiquan, Yan Yangguang. Permanent magnet biased electromagnetism bearing with three degrees of freedom[J]. Journal of NUAA, 2003, 35(1): 82-85.
[6] Pichot M A, Driga M D. Magnetic circuit analysis of homopolar magnetic bearing actuators[C]. Proceeding of the Ninth International Symposium on Magnetic Bearings, 2004: 189-194.
[7] Xu Y L, Dun Y Q, Wang X H, et al. Analysis of hybrid magnetic bearing with a permanent magnet in
the rotor by FEM[J]. IEEE Transactions on Magnetics, 2006, 42(4): 1363-1366.
[8] Murphy B T, Ouroua H, Caprio M T, et al. Permanent
magnet bias, homopolar magnetic bearings for a 130 kW-hr composite flywheel[C]. Proceeding of the Ninth International Symposium on Magnetic Bearings, 2004: 232-238.
[9] Hawkins L A, Murphy B T, Kajs J. Application of permanent magnet bias magnetic bearings to an energy storage flywheel[C]. Proceeding of the Fifth International Symposium on Magnetic Suspension Technology, 1999: 309-323．
[10] 朱熀秋, 邓智泉, 袁寿其, 等. 永磁偏置径向-轴向磁悬浮轴承工作原理和参数设计[J]. 中国电机工程学报, 2002, 22(9)：54-58.
[11] 林其壬, 赵佑民．磁路设计原理[M]．北京：机械工业出版社, 1987. |
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2009, Vol. 24 
