Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2015.10.4.1674
Title & Authors
Improved Method for Calculating Armature-Reaction Field of Surface-Mounted Permanent Magnet Machines Accounting for Opening Slots Zhou, Yu; Li, Huaishu; Wang, Qingyu; Xue, Zhiqiang; Cao, Qing; Zhou, Shi;
This paper presented an improved analytical method for calculating armature-reaction field in the surface-mounted permanent magnet machines accounting for opening slots. The analytical model is divided into two types of subdomains. The current of the armature is centralized in the center of the slots. The field solution of each subdomain is obtained by applying the interface and boundary conditions of the model. Two 30-pole/36-slot prototype machines with different slot-opening width are used for validation. The FE (finite element) results confirm the validity of the analytical results with the proposed model. The investigation shows that the wider the slot-opening width is, the smaller the peak value of radial and circumferential components of flux density, and the analytical armature-reaction field produced by centralized current in the slots is similar with the armature-reaction field produced by distributed current in the slots in the FE.
Z. Q. Zhu and D. Howe, “Electrical machines and drives for electric, hybrid, and fuel cell vehicles.” Proc. IEEE, vol. 95, no. 4, pp. 746-765, Apr. 2007.
Z. Q. Zhu and C. C. Chan, “Electrical machine topologies and tech-nologies for electric, hybrid, and fuel cell vehicles,” in IEEE Vehicle Power and Propulsion Conf., 2008, pp. 1-6.
A. M. El-Refaie, “Fractional-slot concentrated-windingssynchronous permanent magnet machines: Opportunities and challenges,” IEEE Trans. Ind. Electron., vol. 57, no. 1, pp. 107-121, 2010.
I. W. Kim, D. K. Woo and D. K. Lim, “Minimization of a Cogging Torque for an Interior Permanent Magnet Synchronous Machine using a Novel Hybrid Optimization Algorithm,” Journal of Electrical Engineering & Technology, vol. 9, no. 3, pp. 859-865, May 2014.
K. Atallah, Z. Q. Zhu, and D. Howe, “Armature reaction field and winding inductances of slotless permanent-magnet brushless machines,” IEEE Trans. Magn., vol. 34, no. 5, pp. 3737-3744, Sep. 1998.
Z. Q. Zhu, D. Howe, and T. S. Birch, “Calculation of winding inductances of brushless motors with surface mounted permanents magnets,” in Proc. ICEM, Paris, France, Sept. 5-8, 1994.
S. B. Yu, and R. Y. Tang, “Electromagnetic and mechanical character-rization of noise and vibration in permanent magnet synchronous machines,” IEEE Trans. Magn., vol. 42, no. 4, pp. 1335-1338, Apr. 2006.
J. Wang, Z. P. Xia, S. A. Long, “Radial force density and vibration characteristics of modular permanent magnet brushless ac machine,” IEE Proc. Electric Power Appl., vol. 153, no. 6, pp. 793-801, 2006.
Z. Q. Zhu, Z. P. Xia, L. J. Wu, and G. W. Jewell, “Analytical modelling and finite element computation of radial vibration force in fractional-slot permanent magnet brushless machines,” IEEE Trans. Ind. Appl., vol. 46, no. 5, pp. 1908-1918, Sep./Oct. 2010.
D. Lin, S. L. Ho, and W. N. Fu, “Analytical Prediction of Cogging Torque in Surface-Mounted Permanent-Magnet Motors,” IEEE Trans. Magn., vol. 45, no. 9, pp. 3296-3302, Sep. 2009.
D. H. Wang, X. H. Wang, D. W. Qiao, Y. Pei, and S. Y. Jung, “Reducing Cogging Torque in Surface-Mounted Permanent-Magnet Motors by Nonuni-formly Distributed Teeth Method,” IEEE Trans. Magn., vol. 47, no. 9, pp. 2231-2239, Sep. 2011.
Y. Zhou, H. S. Li, W. Wang, Q. Cao and S. Zhou “Improved Method for Calculating Magnetic Field of Surface-Mounted Permanent Magnet Machines Accounting for Slots and Eccentric Magnet Pole,” Journal of Electrical Engineering & Technology, vol. 10, no. 3, pp. 1025-1034, May 2015.
N. Boules, “Two-dimensional field analysis of cylindrical machines with permanent magnet excitation,” IEEE Trans. Ind. Appl., vol. IA-20, no. 5, pp. 1267-1277, Sep./Oct. 1984.
Z. Q. Zhu and D. Howe, “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.
Z. Q. Zhu and D. Howe, “Instantaneous magnetic field distribution in brushless permanent magnet dc motors. Part III: Effect of stator slot-ting,” IEEE Trans. Magn., vol. 29, no. 1, pp. 143-151, Jan. 1993.
D. Zarko, D. Ban, and T. A. Lipo, “Analytical calculation of magnetic field distribution in the slotted air gap of a surface permanent-magnet motor using complex relative air-gap permeance,” IEEE Trans. Magn., vol. 42, no. 7, pp. 1828-1837, Jul. 2006.
L. J. Wu, Z. Q. Zhu, and D. Staton, “An improved subdomain model for predicting magnetic field of surface-mounted permanent-magnet machines accounting for tooth-tips,” IEEE Trans. Magn., vol. 47, no. 6, pp. 1693-1704, Jun. 2011.
A. Rahideh and T. Korakianitis, “Analytical Magnetic Field Calculation of Slotted Brushless Permanent-Magnet Machines With Surface Inset Magnets,” IEEE Trans. Magn., vol. 48, no. 10, pp. 2633-2649, Oct. 2012.