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| Halbach Permanent Magnet Ironless Linear Motors |
| Huang Xueliang, Zhang Qian, Zhou Gan |
| Southeast University Nanjing 210096 China |
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Abstract A structure of permanent magnet (PM) ironless linear motor is presented. For the comparative research one Halbach array prototype and one radial array prototype with same size are made. The magnetic field of Halbach array and radial array is analyzed. The decoupled electromagnetic force equations are proposed. The static thrust force, back-EMF and positioning characteristics of two prototypes are studied experimentally. Compared with the radial array prototype, the thrust force constant of the Halbach array prototype increase by 1.37 times, the back-EMF amplitude increase by 1.5 times with better sinusoidal waveform, and the control current amplitude decrease 1.4 times when same dynamic performances are obtained. Theoretical and experimental results show Halbach array can strengthen the air-gap flux density and improve magnetic field sinusoidal distribution.
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Received: 02 June 2009
Published: 04 March 2014
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[1] Kim W J. High-precision planar magnetic levitation[D]. USA: MIT, 1997.
[2] 周赣, 黄学良, 周勤博, 等. Halbach型永磁阵列的应用综述[J]. 微特电机, 2008(8): 52-55.
[3] Zhu Z Q, Howe D. Halbach permanent magnet machines and application: a review[J]. IEE Proceedings Electric Power Applications, 2001, 148(4): 299-308.
[4] Jang Seok Myeong, Lee Sung Ho, Yoon In Ki. Design criteria for detent force reduction of permanent- magnet linear synchronous motors with Halbach array[J]. IEEE Transactions on Magnetics, 2002, 38(5): 3261-3263.
[5] Jang Seok Myeong, Lee Sung Ho. Comparison of two types of PM linear synchronous servo and miniature motor with air-cored film coil[J]. IEEE Transactions on Magnetics, 2002, 38(5): 3264-3266.
[6] Wang Xiaoyuan, Wang Yongfei, Wang Qingyan. Effects of different permanent magnet structures on the air gap magnetic field of linear motors[C]. World Automation Congress, Waikoloa, USA, 2008: 1-4.
[7] 徐衍亮, 姚福安, 房建成. Halbach磁体结构电动机及其与常规磁体结构电动机的比较研究(Ⅱ)——无导磁铁心电机的对比研究及样机实验[J]. 电工技术学报, 2004, 19(6): 58-62.
[8] David L Trumper, Kim Won jong, Mark E Williams. Design and analysis framework for linear permanent- magnet machines[J]. IEEE Transactions on Industry Application, 1996, 32(2): 371-379.
[9] 周赣, 黄学良, 沈妍, 等. Halbach型永磁阵列的磁场分析[J]. 微特电机, 2008(7): 1-3.
[10] Nicola Bianchi, Silverio Bolognani, Alessandro Dalla Francesca Cappello. Back E.M.F improvement and force ripple reduction in PM linear motor drives[C]. 35th Annual IEEE Power Electronics Specialists Conference, Aachen, Germany, 2004: 3372-3377.
[11] 朱德明, 严仰光. 离散Halbach永磁电动机气隙磁通密度特点及其空载电动势波形优化[J]. 电工技术学报, 2008, 23(11): 22-27.
[12] 李庆雷, 王先逵. 永磁交流同步直线电机位置伺服控制系统设计[J]. 中国机械工程, 2001, 12(5): 577-582. |
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2010, Vol. 25 
