Arc-Shaping of Magnets for Reduction of Cogging Torque in Permanent-Magnet Synchronous Generators

Abstract:

Wind power is an important source of green power. The equipment, generators, and power systems are all determining factors of equipment efficiency. High efficiency generators of medium and small size are widely used in daily life. Cogging torque is a major issue affecting generator efficiency. This paper proposes an optimized design for permanent-magnet synchronous generators using arc-shaped magnets to reduce cogging torque. The proposed approach improves performance significantly.

• Periodical: Advanced Materials Research (Volumes 516-517)
• Pages: 1746-1750
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.516-517.1746
• Online since: May 2012
• Authors: Chao Yuan Cheng, Chun Yu Hsiao, Shu Wei Chung, Chun Pin Chiang, Zai Wei Chin
• Keywords: Arc-Shaped Magnet, Cogging Torque, Optimal Design, Permanent Magnet Synchronous Motor (PMSM)

References

[1] Z. Q. Zhu and David Howe, "Influence of design parameters on cogging torque in permanent magnet machines," IEEE Transactions on Energy Conversion, vol. 15, pp.407-412, 2000.

DOI: 10.1109/60.900501

[2] D. Hanselman, Brushless permanent magnet motor design, The Writers' Collective, U.S.A., 2003.

[3] Y. Wang, M.J. Jin, W.Z. Fei and J.X. Shen, "Cogging torque reduction in permanent magnet flux-switching machines by rotor teeth axial pairing," IET Electric Power Applications, vol. 4, pp.500-506, 2010.

DOI: 10.1049/iet-epa.2009.0205

[4] S. L. Ho, Ningning Chen, and W. N. Fu,  "An Optimal Design Method for the Minimizationof Cogging Torques of a Permanent Magnet Motor Using FEM and Genetic Algorithm,"IEEE Transactions on Applied Superconductivity, vol. 20, No. 3, pp.861-864,2010.

DOI: 10.1109/tasc.2009.2038717

[5] Daohan Wang, Xiuhe Wang, Yubo Yang, and Ran Zhang, "Optimization of Magnetic Pole Shifting to Reduce Cogging Torque In Solid-Rotor Permanent-Magnet Synchronous Motors," IEEE Transactions on Magnetics, vol. 46, No. 5, pp.1228-1234, 2010.

DOI: 10.1109/tmag.2010.2044044

[6] Mohammad S. Islam,Rakib Islam and Tomy Sebastian,"Experimental Verification of Design Techniques ofPermanent-Magnet Synchronous Motors forLow-Torque-Ripple Applications," IEEE Transactions on Industry Applications, vol. 47, No. 1, pp.88-95, 2011.

DOI: 10.1109/tia.2010.2091612

[7] Chun-Yu Hsiao, Sheng-Nian Yeh and Jonq-Chin Hwang, "A novel cogging torque simulation method for permanent-magnet synchronous machines," Energies, vol. 4, No. 12, pp.2166-2179, 2011.

DOI: 10.3390/en4122166

[8] Jia-min Ding, Development and design of the motor and drives, training course from ITRI, Hsinchu, Taiwan, 2010.

[9] http://www.micromeg.com.tw/products_2-2.htm, Micromeg Technology Corporation.