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Title: Distribution characteristic and combined optimization of maximum cogging torque of surface-mounted permanent-magnet machines
Authors: Ping, J
Shuhua, F
Ho, SL 
Keywords: Few slots permanent-magnet machines
Maximum cogging torque (MCT)
Right triangle distribution
Issue Date: 2018
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2018, v. 54, no. 3, 8200505 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: This paper examines the maximum cogging torque (MCT) distribution characteristic of surface-mounted permanent-magnet (SMPM) machines. The MCT distributions of SMPM machines with different pole-arc coefficients and different ratios of slot opening to slot pitch are studied using: 1) the Fourier series analysis together with the Maxwell stress tensor and 2) the finite-element method. Right triangle distribution regions of the optimal MCT are determined by comparing the MCT distribution contour maps obtained by the afore-mentioned two methods. Finally, a combined MCT optimization method for an SMPM with substantial savings in the optimization time, when compared with conventional methods, is proposed.
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2017.2756901
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