Abstract：Poor flux-weakening level of permanent magnet traction motor is the main reason to limit its development in high-speed field. In this paper, interior segmented rotor magnetic circuit structure is proposed to improve its flux-weakening level. By Ansoft software, the effects of ordinary rotor magnetic circuit structure and segmented rotor magnetic circuit structure on the direct-axis armature reaction inductance are analyzed. D-axis inductance of segmented rotor circuit structure is increasing by 60% than that of traditional rotor structure, and the highest speed is increasing by 50% when value of current is 13A. The conclusion that the motor with interior segmented rotor structure can effectively improve flux-weakening level of permanent magnet traction motor and still meet basic performance requirements is verified by prototype test.
陈丽香, 张兆宇, 唐任远. 一种提高永磁牵引电机弱磁扩速能力的新结构[J]. 电工技术学报, 2012, 27(3): 100-104.
Chen Lixiang, Zhang Zhaoyu, Tang Renyuan. A New Structure of Permanent Magnet Traction Motor for Improving Flux-Weakening Level. Transactions of China Electrotechnical Society, 2012, 27(3): 100-104.
[1] 唐任远. 现代永磁电机理论与设计[M]. 北京: 机械工业出版社, 2000. [2] Xu Longya, Ye Lurong, Li Zhen, et al. A new design concept of permanent magnet machine for flux weakening operation[J]. IEEE Transactions on Industry Applications, 1995, 31(2): 375-378. [3] 严岚, 贺益康, 严伟灿. 弱磁用复合式转子永磁无刷直流电机设计[J]. 中小型电机, 2002, 29(2): 5-8. Yan Lan, He Yikang, Yan Weican. Design of a PM brushless DC motor with combined rotor structure used for flux weakening[J]. Small and Medium Electric Machines, 2002, 29(2): 5-8. [4] Huajie Yin, Lin J M. Comparison on characteristics of PMSMS with different parameters for flux- weakening operation[C]. Proceedings of International Conference on Electrical Machines and System, 1994: 1-5. [5] 尹华杰, 蒋豪贤, 谢运祥, 等. 一种永磁同步电动机弱磁新方案[J]. 微电机, 1999, 32(2): 13-15. Yin Huajie, Jiang Haoxian, Xie Yunxiang, et al. A new method on weakening field of permanent magnet synchronous motor[J]. Micromotors, 1999, 32(2): 13-15.
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