Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

Improved Analytical Modeling of a Ellipse Shape Permanent Magnet Rotor in Ultra-High-Speed Brushless DC motor for the Reduction of Torque Ripple

  • Sung, So-Young (Korea Institute of Ocean Science & Technology) ;
  • Jeong, Jae-Hoon (Dept. of Electrical Engineering, Chungnam National Univerity) ;
  • Choi, Ji-Hwan (Dept. of Electrical Engineering, Chungnam National Univerity) ;
  • Park, Hyung-Il (Dept. of Electrical Engineering, Chungnam National Univerity) ;
  • Jang, Seok-Myeong (Dept. of Electrical Engineering, Chungnam National Univerity)
  • Received : 2013.05.27
  • Accepted : 2013.06.07
  • Published : 2013.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper deals with the ellipse permanent magnet machines for the minimization of torque ripple based on electromagnetic field theory. On the basis of a magnetic vector potential and a two dimensional (2-D) polar system, analytical solutions for flux density due to permanent magnet (PM) and current are obtained. In particular, the analytical solutions for mathematical expressions of magnets with different circumferential thicknesses can be solved introducing improved magnetization modeling techniques. The analytical results are validated extensively be nonlinear finite element solutions, a reduction of torque ripple can be achieved.

Keywords

References

  1. Y. S. Chen and Z. Q. Zhu, "Investigation of magnetic Drag Torque in Permanent Magnet Brushless Motors" IEEE Transaction on Magnetics, Vol. 43, No. 6, June. 2007
  2. W. L. Soong, G. B. Kliman, R. N. Johnson, R. A. White, and J. E. Miller, "Novel high-speed induction motor for a commercial centrifugal compressor", IEEE Trans. Ind. Applicat., Vol. 36, No. 3, pp. 706-713, May-Jun. 2000 https://doi.org/10.1109/28.845043
  3. P. C. Krause, O. Wasynczuk, and S. D. sudhuff, Analysis of Electrical Machinery. New Yotk : IEEE Press, 1995
  4. X. Wang, Q. Li, S. Wang, Q. Li, "Analytical calculation of air-gap magnetic field distribution and instantaneous characteristics of brushless DC motors", IEEE Trans. Energy Conversion, Vol. 18, pp. 424-432, Sept. 2003 https://doi.org/10.1109/TEC.2003.815852
  5. J. R. Melcher, "Continuum Electromechanics", Cambridge, MA:MIT Press, 1981
  6. S. M. Jang, H. I. Park, J. Y. Choi, K. J. Ko, and S. H. Lee, "Magnet Pole Shape Design of Permanent Magnet Machine for Minimization of Torque Ripple Based on Electromagnetic Field Theory", IEEE Trans. Magn, Vol. 47, No. 10, pp. 3586-3589, Oct. 2011 https://doi.org/10.1109/TMAG.2011.2151846
  7. Z. Q. Zhu, D. Howe, E Bolte, B. Ackermann, "Instantaneous magnetic field distribution in brushless permanent magnet dc motors, Part I: open-circuit field," IEEE Trans. Magn., Vol. 29, No. 1, pp. 127-135, Jan. 1993
  8. Z. Q. Zhu, D. Howe, E Bolte, B. Ackerman, "Instantaneous magnetic field distribution in brushless permanent magnet dc motors, Part II: armature reaction field," IEEE Trans. Magn., Vol. 29, No. 1, pp. 136-142, Jan. 1993 https://doi.org/10.1109/20.195558
  9. Z. Q. Zhu, D. Howe, E Bolte, B. Ackerman, "Instantaneous magnetic field distribution in brushless permanent magnet dc motors, Part IV: magnetic field on load," IEEE Trans. Magn., Vol. 29, No. 1, pp. 153-158, Jan. 1993
  10. S. M. Jang, U. H. Lee, D. J. You, J. P. Lee, and S. H. Choi, "Operating Torque Estimation of High-Speed Slotless Brushless DC Machine Considering Power Loss," IEEE Trans. Magn, Vol. 45, No. 10, pp. 4539-4542, Oct 2009 https://doi.org/10.1109/TMAG.2009.2023245
  11. P. Pillay, R. Krishnan, "Modeling simulation, and analysis of permanent-magnet motor drives, Part II : The brushless DC motor drive," IEEE Trans. on Industry Applications, Vol. 25, No. 2, pp. 274-279, March /April. 1989 https://doi.org/10.1109/28.25542
  12. D. C. Hanselman, "Brushless Permanent Magnet Motor Design" McGraw-Hill, The second edition, 2003