微特电机 ›› 2019, Vol. 47 ›› Issue (4): 33-37.doi: 1004-7018(2019)04-0033-05

• 设计分析 • 上一篇    下一篇

CT磁驱动用永磁电机设计与分析

汪达鹏,周瑾,金超武,刘雪杰   

  1. 南京航空航天大学,南京 210000
  • 收稿日期:2018-01-05 出版日期:2019-04-28 发布日期:2019-04-28
  • 作者简介:汪达鹏(1993—),男,硕士研究生,主要从事机电一体化,电机控制与设计。
  • 基金资助:
    国家自然科学基金项目(51675261);中央高校基本科研业务费专项资金

Design and Analysis of a Permanent Magnet Motor for CT Magnetic Drive

WANG Da-peng,ZHOU Jin,JIN Chao-wu,LIU Xue-jie   

  1. Nanjing University of Aeronautics and Astronautics, Nanjing 210000, China
  • Received:2018-01-05 Online:2019-04-28 Published:2019-04-28

摘要:

利用解析计算与有限元结合的方法设计了一种针对医疗CT磁驱动控制对象的永磁同步电动机。为了获得更好的电机性能,包括低齿槽转矩,高效率,利用有限元仿真对电机进行优化。对槽口宽度和气隙长度参数的优化将齿槽转矩削弱至0.1 mN·m以下,同时,对每槽匝数进行优化,电机效率提高至87.53%。通过对比优化后的电机仿真结果与试验结果,判断样机符合设计要求,验证了该设计方案的有效性。

关键词: 医疗CT, 永磁同步电动机, 低齿槽转矩, 高效率, 有限元仿真

Abstract:

A permanent magnet synchronous motor (PMSM) was designed as the control objects of magnetic drive with the theoretical and finite element analysis. To obtain better performance of the motor, including low cogging torque and high efficiency, the motor was optimized with the finite element software. The cogging torque was reduced to less than 0.1 mN·m by optimizing the slot width and the air gap length parameters. Under the above premise, the motor efficiency was improved to 87.53% by optimizing the number of turns per slot.By comparing the optimized motor simulation with the test result, the prototype conforms to the design requirements and the validity of the design scheme is verified.

Key words: medical CT, permanent magnet synchronous motor, low cogging torque, high efficiency, finite element simulation

中图分类号: