New Cogging-Torque Reduction Method for Brushless Permanent-Magnet Motors

IEEE Transactions on Magnetics

Volumn 39, Issue 6, 2003, Pages 3503-3506

  Koh, Chang Seop ^a   Seol, Jin Soo ^b  

^a Chungbuk National University   (South Korea)

^b Jahwa Electronics Co Ltd   (South Korea)

Author keywords

Auxiliary slots; Brushless permanent magnet (PM) motors; Cogging torque; Magnetizing yoke; Not fully magnetized zone (NFMZ)

Indexed keywords

ALGORITHMS; FINITE ELEMENT METHOD; FUNCTIONS; MAGNETIC FLUX; MAGNETIZATION; MOTORS; TORQUE;

AUXILLARY SLOTS; BRUSHLESS MOTORS; MAGNETIC ENERGY;

PERMANENT MAGNETS;

EID: 0348167623     PISSN: 00189464     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMAG.2003.819473     Document Type: Article

References (11)

1. M. Burgbacher and S. Georgen, "Permanent magnet excited electric motor," U.S. Patent 4998032, Mar. 1991.
2. C. S. Koh, H. S. Yoon, K. W. Nam, and H. S. Hong, "Magnetic pole shape optimization of permanent magnet motor for reduction of cogging torque," IEEE Trans. Magn., vol. 33, pp. 1822-1827, Mar. 1997.
3. K. Kawashima and K. Seimitsu, "Motor with armature teeth and field magnet," U.S. Patent 4 833 355, May 1989.
4. S. M. Hwang and D. K. Lieu, "Reduction of torque ripple in brushless DC motors," IEEE Trans. Magn, vol. 31, pp. 3737-3739, Nov. 1995.
5. V. Prochazka, "Magnetizer for magnet with shaped magnetic waveform," U.S. Patent 5 557 248, Sept. 1996.
6. Y. Arita,"Motor,"U.S.Patent 4 812 692, Mar. 1989.
7. Y. D. Yao, D. R. Huang, J. C. Wang, and S. H. Liou, "Simulation study of the reduction of cogging torque in permanent magnet motors," IEEE Trans. Magn, vol. 33, pp. 4095-4097, Sept. 1997.
8. M. Rizzo, A. Savini, and J. Turowski, "Influence of number of poles on the torque of DC brushless motors with auxiliary salient poles," IEEE Trans. Magn, vol. 27, pp. 5420-5422, Nov. 1991.
9. M. Gotou and K. Kobayashi, "An analysis of the cogging torque of a DC motor and new reducing technique," JIEE Trans., vol. 103, no. 11, pp. 711-718, 1983.
10. H. Tajima, K. Miyashita, M. Itou, A. Tamura, T. Kono, Y. Sekita, and K. Saito, "Permanent magnet electrical machine with reduced cogging," U.S. Patent 4672 253, July 1987.
11. Y. Suzuki, Y. Shizuoka-ken, S. Fujitani, S. Hamakita, and K. Makino, "Dynamoelectric machine," U.S. Patent 5 801463, Sept. 1998.