Theoretical and Simulation Analysis of Influences of Stator Tooth Width on Cogging Torque of BLDC Motors

Cogging torque reduction is one of the most important requirements in the design of BLDC motors due to its direct impact on the performance of the motor. In this paper, the influences of tooth width and slot/pole match on cogging torque corresponding to both uniformed teeth and nonuniformed teeth we...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2009-10, Vol.45 (10), p.4601-4604
Main Authors: Jiang Xintong, Jiang Xintong, Xing Jingwei, Xing Jingwei, Li Yong, Li Yong, Lu Yongping, Lu Yongping
Format: Article
Language:English
Subjects:
Analytical models
BLDC motor
Brushless DC motors
Cogging
cogging torque
Design engineering
Energy methods
Forging
Magnetic analysis
Magnetic flux leakage
Magnetism
Mathematical analysis
Motors
Permanent magnet motors
Permeability
Poles
simulation
Stators
Teeth
tooth width
Torque
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Summary:Cogging torque reduction is one of the most important requirements in the design of BLDC motors due to its direct impact on the performance of the motor. In this paper, the influences of tooth width and slot/pole match on cogging torque corresponding to both uniformed teeth and nonuniformed teeth were theoretically analyzed on the basis of analytical expressions of cogging torque deduced with energy method. Furthermore, several models which denote features of different slots and poles were setup and calculated in finite element analysis software Flux2D, the result of which verified the theoretical analysis. Valuable conclusions and some suggestions were given in the paper which is meaningful to the design of good performance BLDC motors.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2009.2022639