Abstract：With the reference of direct torque control of conventional permanent magnet synchronous motor, a novel direct levitation force control algorithm based on space vector pulse width modulation method is proposed in this paper. To control radial magnetic levitation forces in permanent magnet-type bearingless motors directly, a profound theoretical analysis on mechanism of direct force control is presented and a real-time levitation force and torque control system is also designed. The experimental results of a consequent-pole permanent magnet bearingless machine show good performance of static and dynamic suspension and confirm the validity and availability of this new arithmetic.
仇志坚, 邓智泉, 章跃进. 交替极永磁无轴承电机的直接悬浮力控制[J]. 电工技术学报, 2011, 26(9): 94-99.
Qiu Zhijian, Deng Zhiquan, Zhang Yuejin. Direct Levitation Force Control of a Consequent-Pole Permanent Magnet Bearingless Motor. Transactions of China Electrotechnical Society, 2011, 26(9): 94-99.
[1] Barret Steel, Lyndon Stephens. A test rig for measuring force and torque production in a lorenz, slotless self bearing motor[C]. Internationa Symposium on Magnetic Bearing, ETH Zurich, 2000: 407-412. [2] Kousuke Oguri, Masaya Watada, Susumu Torii, et al. Design optimization of magnetic bearing composed of permanent magnets for the bearingless motor[C]. International Symposium on Magnetic Bearing, ETH Zurich, 2000: 365-370. [3] Masahide Ooshima, Satoru Miyazawa, Akira Chiba, et al. Performance evaluation and test results of a 11 000r/m, 4kW surface-mounted permanent magnet- type bearingless motor[C]. International Symposium on Magnetic Bearing, ETH Zurich, 2000: 377-382. [4] Kohei Inagaki, Akira Chiba, Rahman M A, et al. Performance characteristics of inset-type permanent magnet bearingless motor drives[C]. Power Engineering Society Winter Meeting, Singapore, 2000, 2: 202-207. [5] Masahide Ooshima, Koyu Yamashita, Akira Chiba, et al. An improved control method of buried-type IPM bearingless motors considering magnetic saturation and magnetic pull variation[C]. Proceedings of International Electric Machines and Drives Conference, Madison, WI, 2003: 1055-1060. [6] Ooshima M, Chiba A, Rahman M A, et al. An improved control method of buried-type IPM bearingless motors considering magnetic saturation and magnetic pull variation[J]. IEEE Transactions on Energy Conversion, 2004, 19(3): 569-575. [7] Ooshima M, Miyazawa S, Shima Y, et al. Increase in radial force of a bearingless motor with buried permanent magnet-type rotor [C]. Proceedings of the Fourth International Conference on Motion and Vibration Control, 1998: 1077-1082. [8] Fujie N, Yoshimatsu R, Chiba A, et al. A decoupling control method of buried permanent magnet bearingless motors considering magnetic saturation[C]. International Power Engineering Conference, Tokyo, 2000: 395-400. [9] Ichikawa O, Chiba A, Fukao T. Principles and structures of homopolar type bearingless motors[C]. International Power Engineering Conference, Tokyo, 2000: 401-406. [10] 王凤翔, 王宝国, 徐隆亚. 一种新型混合转子结构无轴承电动机磁悬浮力的矢量控制[J]. 中国电机工程学报, 2005, 25(5): 98-103. [11] Seung Jong Kim, Shimonishi T, Kaneboko H, et al. Design of a hybrid-type short span self-bearing motor[C]. International Symposium on Magnetic Bearing, ETH Zurich, 2000: 359-364. [12] Takenaga T, Kubota Y, Chiba A, et al. A principle and a design of a consequent-pole bearingless motor[C]. Proceedings of the. 8th Int. Symp. Magnetic Bearings, Mito, Japan, 2002: 259-264. [13] Takenaga T, Kubota Y, Chiba A, et al. A principle and winding design of consequent-pole bearingless motors[J]. The Japan Society of Mechanical Engineers International Journal Series C, 2003, 46(2): 363-369. [14] Dorrell D G, Amemiya J, Chiba A, et al. Analytical modeling of a consequent-pole bearingless permanent magnet motor[C]. Proceedings of the IEEE Power Electronics and Electric Drives Conf. , Singapore, 2003: 247-252. [15] Amemiya J, Chiba A, Dorrell D G, et al. Basic characteristics of a consequent-pole-type bearingless motor[J]. IEEE Transactions on Magnetics, 2005, 41(1): 82-89. [16] Asami K, Chiba A, Rahman M A, et al. Stiffness analysis of a magnetically suspended bearingless motor with permanent magnet passive positioning[J]. IEEE Transations on Magnetics, 2005, 41(10): 3820-3822. [17] Ooshima M, Miyazawa S, Chiba A, et al. A rotor designof a permanent magnet-type bearingless motor consid-ering demagnetization[C]. Proceedings of the Power Conversion Conference, Nagaoka, 1997: 655- 660. [18] Ooshima M, Chiba A, Fukao T, et al. Design and analysis of permanent magnet-type bearingless motors[J]. IEEE Transactions on Industrial Electronics, 1996, 43(2): 292-299. [19] 邓智泉, 仇志坚, 王晓琳, 等. 无轴承永磁同步电机的转子磁场定向控制研究[J]. 中国电机工程学报, 2005, 25(1): 104-108. [20] 仇志坚, 邓智泉, 严仰光. 无轴承永磁同步电动机的原理与实现[J]. 电工技术学报, 2004, 19(11): 8-13. [21] 仇志坚, 邓智泉, 王晓琳. 无轴承永磁同步电动机的独立控制研究[J]. 中国电机工程学报, 2006, 26(1): 115-119. [22] Zhong L, Rahman M F, Hu Y W, et a1. Analysis of direct torque control in permanent magnet synchronous motor drives[J]. IEEE Transactions on Power Electronics, 1997, l2(3): 528-535. [23] 李夙. 异步电动机直接转矩控制[M]. 北京: 机械工业出版社, 1998.
2011, Vol. 26 
