Browse > Article

Cogging Torque Analysis of BLDC Motor with the Axial Displacement of Rotor  

Kim, Young-Kyoun (창원대 공대 전기학과)
Lee, Jeong-Jong (창원대 공대 전기학과)
Nam, Hyuk (창원대 공대 전기학과)
Hong, Jung-Pyo (창원대 공대 전기학과)
Jin, Young-Woo (대우정밀㈜)
Hur, Yoon (대우정밀㈜)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.52, no.8, 2003 , pp. 368-372 More about this Journal
Abstract
This paper deals with the cogging torque analysis of a BLDC Motor, which has the axial displacement of its rotor. In order to improve the torque performance of the BLDC motor, Brushless motor is commonly designed to minimize its cogging torque. Therefore, a skewed model is used to reduce the cogging torque. However, even though the rotor or stator is skewed, the cogging torque could be increased by the axial displacement of the rotor, which occurs when the BLDC Motor is manufactured. Therefore, this paper investigates the effect of the axial displacement of the rotor on the cogging torque. In order to investigate the effect, an analysis method, which is 3D-EMCN in combination with 2D-FEM, is proposed to analyze the cogging torque of the BLDC motor with the axial displacement of its rotor, and the result of the analysis is verified by comparison with the experimental result.
Keywords
Cogging torque; permanent magnet brushless DC motors; 2D-FEM; 3D-EMCN.;
Citations & Related Records
연도 인용수 순위
  • Reference
1 C I McClay and S Williamson, 'THE INFLUENCE OF ROTOR SKEW ON CAGE MOTOR LOSSES', IEE EMD97 Conference Publication No. 444, pp263-267, Sept., 1997   DOI
2 Shimizu et al., 'Electric Power Steering Control,' Regular Conference of the Japan Society of Mechanical Engineers, Vol. C, pp. 446-448, 1991
3 Nakayama et al., 'Present & Future of Electrical Power Steering,' Automotive Technology, Vol. 44, No. 1, pp. 106-111, 1990
4 A Keyhani, C. B. Studer, T. Sebastian and S. K. Murthy, 'Study of Cogging Torque in Permanent Magnet Machines,' Electric Machines and Power Systems, Vol. 27, No. 7, pp. 665-678, 1999   DOI
5 임달호, 홍정표, '3차원 등가자기회로망법에 의한 영구자석 모터의 자계해석', 대한전기학회논문지, Vol.43, No.9, pp 1432-1439, 1994
6 Jin Hur, Dong-Seok Hyun, & Jung-Pyo Hong 'A Method for Reduction of Cogging Torque in Brushless D.C. Motor Considering the Distribution of Magnetization by 3DEMCN', IEEE Trans. on Magnetics, Vol.34, No.5, pp.3532-3535, September, 1998   DOI   ScienceOn
7 J. S. Won, et al., 'Analysis of Skew Effects on Cogging Torque and BEMF for BLDCM', IEEE IAS Conf. Rec., Dearborn, MI, pp191-207, Sept., 1991   DOI