Auxiliary Rotor Slot Optimization Design for Improving Back-EMF Waveform of PMSM Based on MagneForce

  • Yuanyuan YangEmail author
  • Bulai Wang
  • Xiutao Ji
  • Xiangsheng Liu
  • Panyuan Ren
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 528)


As lots of harmonics are in the back-electromotive force (EMF) of Permanent Magnet Synchronous Motor (PMSM), an auxiliary rotor slot is presented to reduce the Total Harmonic Distortion (THD), to improve the waveform of back-EMF, and to make the waveform of it close to sinusoid. A 22 kW 3000 rpm PMSM is simulated by MagneForce software. The simulation results show that the THD is decreased by 48.4%, while the fundamental voltage amplitude is increased by 4.4%, and the waveform is closer to sinusoid after the auxiliary rotor slot is opened.


PMSM Back-EMF MagneForce An auxiliary rotor slot 


  1. 1.
    J.A. Guemes, A.M. Iraolagoitia, J.I. Del Hoyo, Torque analysis in permanent-magnet synchronous motors: a comparative study. IEEE Trans. Energy Convers. 26(1), 55–63 (2011)CrossRefGoogle Scholar
  2. 2.
    H. Jing, F. Hongyu, W. Chen, Optimization design of built-in permanent magnet synchronous motor based on Ansoft. J. Sichuan Univ. Sci. Technol. 29(4), 35–38 (2016)Google Scholar
  3. 3.
    L. Quanwu, D. Manfeng, L. Zhaojie, Optimization of pole width optimization method for back-EMF waveform of permanent magnet synchronous motor. Micro Motors 40(9), 6–8 (2012)Google Scholar
  4. 4.
    B. Wang, Z. Wu, Y. Wang, Z. Hou, Low harmonic high efficiency permanent magnet synchronous machines based on non-uniform magnet slot, in 2011 International Conference on Electrical and Control Engineering, ICECE 2011Proceedings, pp. 233–236Google Scholar
  5. 5.
    J. Youhua, W. Hongwei, Optimization of air gap flux density of permanent magnet synchronous motor based on Ansoft. Micromotor 46(12), 84–87 (2013)Google Scholar
  6. 6.
    Z. Lei, L. Guang, Analysis of the back-EMF waveform distortion rate of permanent magnet synchronous generator based on Ansoft. Explos. Proof Motor 47(4), 28–31 (2012)Google Scholar
  7. 7.
    A. Kioumarsi, M. Moallem, B. Fahimi, Mitigation of torque ripple in interior permanent magnet motors by optimal shape design. IEEE Trans. Magn. 42(11), 3706–3711 (2006)CrossRefGoogle Scholar
  8. 8.
    L. Dosiek, P. Pillay, Cogging torque reduction in permanent magnet machines. IEEE Trans. Ind. Appl. 43(6), 1565–1571 (2007) Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Yuanyuan Yang
    • 1
    Email author
  • Bulai Wang
    • 1
  • Xiutao Ji
    • 1
  • Xiangsheng Liu
    • 1
  • Panyuan Ren
    • 1
  1. 1.School of Electrical and Electronic EngineeringShanghai Institute of TechnologyShanghaiChina

Personalised recommendations