Advertisement

Research on Cosine-Type Non-uniform Air Gap Structure Based on Finite Element Analysis

  • Yuanyuan Yang
  • Bulai Wang
  • Xiutao Ji
  • Xiangsheng Liu
  • Qiangqiang Xu
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 528)

Abstract

That the air gap magnetic field of PMSM contains a large number of harmonics, aiming at the problem, this paper presents a cosine-type non-uniform air gap motor structure. Taking a 22 kW 3000 rpm permanent magnet synchronous motor as the researching object, a motor model was established by finite element analysis software to calculate the air gap flux density, no-load back EMF and output torque distribution curve respectively. The comparing results prove that the cosine type non-uniform air gap structure can effectively reduce the no-load back EMF harmonic components, reduce the torque ripple and improve the motor efficiency.

Keywords

Cosine-type non-uniform air gap MagneForce No-load back EMF Torque ripple 

References

  1. 1.
    B. Wang, Z. Wu, Y. Wang et al., Low harmonic high efficiency permanent magnet synchronous machines based on non-uniform magnet slot, in 2011 International Conference on Electrical and Control Engineering, ICECE 2011—Proceedings, pp. 233–236Google Scholar
  2. 2.
    T.M. Jahns, W.L. Soong, Torque ripple reduction in interior permanent magnet synchronous machine using the principle of mutual harmonics exclusion, in Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007, 23–27 Sept 2007 (IEEE, 2007), pp. 558–565Google Scholar
  3. 3.
    J. Youhua, W. Hongwei, Optimization of air-gap flux density of permanent magnet synchronous motor based on Ansoft. Micro-motor 46(12), 84–87 (2013)Google Scholar
  4. 4.
    E. Carraro, N. Bianchi, Design and comparison of interior permanent magnet synchronous motors with non-uniform air gap and conventional rotor for electric vehicle applications. IET Electr. Power Appl. 8(6), 240–249 (2014)CrossRefGoogle Scholar
  5. 5.
    L. Jia, Z. Lin, W. Baocheng et al., Design and finite element analysis of a new rotor structure of permanent magnet synchronous motor. Microelectronics 46(1):21–23 (2013)Google Scholar
  6. 6.
    X.Y. Lei, L.Q. Zhan, W. Tao, Permanent magnet synchronous motor no-load air gap flux density waveform optimization. J. Southwest Jiaotong Univ. 44(4), 513–516 (2009)Google Scholar
  7. 7.
    C. Dang, W. Zhou, L. Yin et al., Analysis and reducing methods of cogging torque on permanent magnet AC servo motor, in 17th International Conference on Electrical Machines and Systems (ICEMS) (IEEE, 2014), pp. 2136–2140Google Scholar
  8. 8.
    N. Bianchi, S. Bolognani, D. Bon et al., Rotor flux-barrier design for torque ripple reduction in synchronous reluctance and PM-assisted synchronous reluctance motors. IEEE Trans. Ind. Appl. 45(3), 921–928 (2009)CrossRefGoogle Scholar
  9. 9.
    X. Tang, W. Xiuhe, S. Shumin et al., Analysis and analysis of cogging torque of asynchronous starting permanent magnet synchronous motor. Proc. CSEE 36(5), 1395–1403 (2016)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Yuanyuan Yang
    • 1
  • Bulai Wang
    • 1
  • Xiutao Ji
    • 1
  • Xiangsheng Liu
    • 1
  • Qiangqiang Xu
    • 1
  1. 1.School of Electrical and Electronic EngineeringShanghai Institute of TechnologyShanghaiChina

Personalised recommendations