微特电机 ›› 2019, Vol. 47 ›› Issue (8): 13-16.

• 设计分析 • 上一篇    下一篇

磁极优化降低表贴式永磁电机电磁振动噪声

黄厚佳1,徐余法1,2,李全峰1,3,黄苏融3   

  1. 1.上海电机学院,上海 201306; 2.上海第二工业大学,上海 201209; 3.上海大学,上海 200072
  • 出版日期:2019-08-28 发布日期:2019-08-28
  • 作者简介:黄厚佳(1990—),男,硕士研究生,研究方向为电机优化设计。
  • 基金资助:
    国家科技支撑计划课(2015BAG03B00)

Magnetic Pole Optimization to Reduce Electromagnetic Vibration and Noise

HUANG Hou-jia1, XU Yu-fa1,2, LI Quan-feng1,3, HUANG Su-rong3   

  1. 1.Shanghai Dianji University, Shanghai 201306, China;
    2. Shanghai Second Polytechnic University, Shanghai 201209, China;
    3. Shanghai University, Shanghai 200072, China
  • Online:2019-08-28 Published:2019-08-28

摘要: 磁极偏心距和极弧系数是表贴式永磁电机的重要设计参数,对电机电磁振动和噪声有重要影响,而现有研究主要停留在上述参数对径向电磁力波的影响,并未进一步研究如何通过上述参数削弱电机电磁振动和噪声。建立径向气隙磁密关于极弧系数和磁极偏心距的解析模型,推导出径向电磁力波解析表达式。编写电机电磁振动噪声计算程序,以一台4.2 kW表贴式永磁电机为例,计算出不同极弧系数及磁极偏心距下电机电磁振动噪声值。结果表明,随着磁极偏心距增大,电机振动噪声有减小的趋势,当极弧系数为0.9左右时,电机电磁振动噪声降到最小值。有限元仿真验证了该结论的正确性。

关键词: 表贴式永磁电机, 磁极偏心距, 极弧系数, 电磁振动噪声, 有限元仿真

Abstract: Magnetic pole eccentricity and pole-arc coefficient are important design parameters of surface-mounted permanent magnet motors, which have important influence on motors’ electromagnetic vibration and noise. But present research mainly focuses on the influence of above parameters on radial electromagnetic force waves and no further research has been conducted on the reduction of electromagnetic vibration and noise through the above parameters. The radial air gap flux density’s analytical model about magnetic pole eccentricity and arc coefficient was established and the analytical expression of radial electromagnetic force waves was deduced. The procedure for calculating the values of motors’ electromagnetic vibration and noise was given and the electromagnetic vibration and noise of a motor of 4.2 kW under different magnetic pole eccentricity and arc coefficient were calculated. The results show that the motors’ electromagnetic vibration and noise reduce when the magnetic pole eccentricity increases and the motors’ electromagnetic vibration and noise reach the minimum when the arc coefficient is near 0.9. The correctness of the calculation was verified by finite element simulation.

Key words: surface-mounted permanent magnet motor, magnetic pole eccentricity, pole-arc coefficient, electromagnetic vibration and noise, finite element simulation

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