KIEE International Transaction on Electrical Machinery and Energy Conversion Systems

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Design and Analysis of AFPM Coreless Motor for Electric Scooter

  • Kim, Chul-Ho (Dept. of Electrical Engineering, Graduate School of Kyungpook National University) ;
  • Oh, Chul-Soo (School of Electrical Engineering and Computer Science, Kyung-pook National University)
  • Published : 2003.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper deals with the design and the characteristic analysis of a coreless axial flux permanent magnet (AFPM) motor. Because a direct-drive wheel motor is easily derived from it, the AFPM motor is very suitable for application in an electric scooter. Compared to a conventional motor of the same size and weight, the AFPM motor is proven to have more power and torque per unit weight. In this paper, an AFPM coreless motor with a double-sided rotor disk equipped with Nd-Fe-B rare earth magnets is designed and a prototype of the motor is manufactured, which will be properly applied for the low-speed, and high-torque direct drive required for the electric scooter. The manufactured prototype of the motor has a rating of 300W, 510rpm, 5.6Nm, and 85% efficiency.

Keywords

References

  1. F. Caricchi, et al, 'Low-Cost Compact Permanent Magnet Machine for Adjustable-Speed Pump Applica- tion,' IEEE Transactions on Industry Applications, Vol. 34, No.1, pp. 109-116, 1998 https://doi.org/10.1109/28.658730
  2. K. Sitapati and R. Krishnan, 'Performance Comparisons of Radial and Axial Field, Permanent Magnet , Brushless Machines,' IEEE Transactions on Industry Applications, Vol. 37, No.5, pp. 1219-1226, 2001 https://doi.org/10.1109/28.952495
  3. Z. Zhang, et al., 'Wheels Axial Flux Machines for Electric Vehicle Applications,' International Conference on Electrical Machines, pp. 7-12, 1994
  4. E. Spooner and B.J. Chalmers, 'TORUS: a Slotless, Toroidal-Stator, Permanent-Magnet Generator,' lEE Proceedings-B, Vol. 139, No.6, pp. 497-506, 1992
  5. TA. Lipo, 'A Low-Loss Permanent-Magnet Brushless DC Motor Utilizing Tape Wound Amorphous Iron,' IEEE Transactions on Industry Application, Vol. 28, No.3, pp. 646-651, 1992 https://doi.org/10.1109/28.137452
  6. F. Profumo, et al, 'Design and Realization of a Novel Axial Flux Interior PM Synchronous Motor for Wheel-Motors Applications,' Electric Machines and Power Systems, Vol. 28, pp. 637-649, 2000
  7. Yurity N. Zhilichev, 'Three-Dimensional Analytic Model of Permanent Magnet Axial Flux Machine,' IEEE Transactions on Magnetics, Vol. 34, No.6, pp. 3897- 3901, 1998 https://doi.org/10.1109/20.728300
  8. B. J. Chalmers, W. Wu, and E. Spooner, 'An AxialFlux Permanent-Magnet Generator for a Gearless Wind Energy System,' IEEE Transactions on Energy Conver-sion, Vol. 14, No.2, pp. 251-257, 1999 https://doi.org/10.1109/60.766991
  9. T.S. EI-Hasan, P.C. Luk, F.S. Bhinder, and M.S. Ebaid, 'Modular Design of High-Speed Permanent Magnet Axial-Flux Generators,' IEEE Transactions on Magnet-ics, Vol. 36, No.5, pp. 3558-3561, 2000 https://doi.org/10.1109/20.908897
  10. P. Campbell, Permanent Magnet Materials and their Application, Cambridge University Press, 1994
  11. Duane C. Hanselman, Brushless Permanent-Magnet Motor Design, McGraw-Hill, pp. 41-60, 1994
  12. H. Chai, Electromechanical Motion Devices, Prentice Hall, 1998
  13. A. G. Jack, et al, 'Combined Radial and Axial Permanent Magnet Motors Using Soft Magnetic Composites,' lEE Ninth International Conference on Electric Machines and Drives, pp. 25-29, 1999
  14. T. F. Chan, et aI, 'In-Wheel Permanent-Magnet Brushless de Motor Drive for an Electric Bicycle,' IEEE Transactions on Energy Conversion, Vol. 17, No.2, pp. 229-233, 2002 https://doi.org/10.1109/TEC.2002.1009473