Effect of Permanent Magnet Made by Blocking Magnetization on Magnetic Density and Eddy Current Loss of Permanent Magnet Transmission

Wei Lijun; Wang Jinzhong; Lu Yanghui; Wu Xianfeng; Luo Shuai

doi:10.16578/j.issn.1004.2539.2024.01.014

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Effect of Permanent Magnet Made by Blocking Magnetization on Magnetic Density and Eddy Current Loss of Permanent Magnet Transmission

Test·Analysis | 更新时间：2024-12-13

- Effect of Permanent Magnet Made by Blocking Magnetization on Magnetic Density and Eddy Current Loss of Permanent Magnet Transmission
- Journal of Mechanical Transmission Vol. 48, Issue 1, Pages: 94-98(2024)
- 作者机构：
  
  国家电投集团科学技术研究院有限公司，北京 102209
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2024.01.014
  CLC：
- Published：15 January 2024，
  
  Received：19 October 2022，
  
  Revised：15 June 2023，
- 稿件说明：
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魏立军,王晋中,鲁仰辉等.分块充磁永磁体对磁齿轮磁密及涡流损耗影响[J].机械传动,2024,48(01):94-98.

Wei Lijun,Wang Jinzhong,Lu Yanghui,et al.Effect of Permanent Magnet Made by Blocking Magnetization on Magnetic Density and Eddy Current Loss of Permanent Magnet Transmission[J].Journal of Mechanical Transmission,2024,48(01):94-98.
魏立军,王晋中,鲁仰辉等.分块充磁永磁体对磁齿轮磁密及涡流损耗影响[J].机械传动,2024,48(01):94-98. DOI： 10.16578/j.issn.1004.2539.2024.01.014.

Wei Lijun,Wang Jinzhong,Lu Yanghui,et al.Effect of Permanent Magnet Made by Blocking Magnetization on Magnetic Density and Eddy Current Loss of Permanent Magnet Transmission[J].Journal of Mechanical Transmission,2024,48(01):94-98. DOI： 10.16578/j.issn.1004.2539.2024.01.014.

摘要

在大功率大变速比磁齿轮中，整体充磁式大块永磁体空心化问题是提升永磁齿轮性能的主要障碍之一。分块充磁工艺能够有效解决这一问题，明显提升大块永磁体性能。通过构建3D模型，对采用分块充磁技术的永磁体的永磁齿轮完成了磁热仿真分析。结果表明，分块充磁技术能够有效抑制大尺寸永磁体的磁场空心化，显著提高其剩磁，改善永磁齿轮的磁密，进而提升永磁齿轮的最大输出转矩；分块充磁永磁体块间绝缘能够有效缩减永磁体圆周弧长和轴向长度与永磁体磁场透入深度的差距，大大降低永磁体的涡流损耗。

Abstract

The remanent magnetism hollowing of large permanent magnets has been one of the main obstacles to improve the performance of the permanent magnet transmission with high power and high speed ratio. Compared with the traditional preparation process

blocking magnetization technology can significantly improve the performance of large permanent magnets. A 3D model is constructed to complete the magneto-thermal simulation analysis adopting the difference permanent magnets. The results show that the blocking magnetization process can effectively suppress the hollowing of the magnetic field

significantly improve the remanence of the large-size permanent magnet

and enhance the magnetic density in the permanent magnet gear

resulting in the maximum output torque increase of the permanent magnet gear. The difference between the circumferential arc length

axial length and penetration depth of magnetic field can be reduced obviously by the insulation between blocking magnetizing permanent magnets

and the eddy current loss of the permanent magnet.

关键词

永磁体分块充磁磁密分布涡流损耗磁场调制

Keywords

Permanent magnetBlocking magnetizationMagnetic density distributionsEddy current lossMagnetic field modulation

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