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http://dx.doi.org/10.5370/KIEE.2017.66.11.1568

Cogging Torque Reduction Method of a Single-Phase BLDC Motor using Asymmetric Sloping Notch  

Park, Young-Un (Major of Electrical Engineering & GREEN ENERGY Research Institute, Sunchon national University)
So, Ji-Young (Major of Electrical Engineering & GREEN ENERGY Research Institute, Sunchon national University)
Woo, Kyung il (Dept. of Electrical Engineering, Pukyong National University)
Kim, Dae-Kyong (Dept. of Electrical Control Engineering & GREEN ENERGY Research Institute, Sunchon national University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.66, no.11, 2017 , pp. 1568-1574 More about this Journal
Abstract
This paper studied cogging torque reduction effect for sloping notch applied two notches on stator teeth. We have confirmed accuracy of FEM(Finite Element Method) through comparison previous model using asymmetric notch for experiment and 3D FEM results, and then cogging torque comparison of previous model and sloping notch model. Also the sloping notch model has been modified to step-sloping notch model to consider manufactur. The modification method of sloping notch changed the degree of slope of notch (a)(Notch(a) sloping Deg) and the degree of Slope of notch (b)(Notch(b) Sloping Deg). When Cogging torque is case of minimum, Notch (a) Sloping Deg is $-12[^{\circ}]$ and Notch(b) Sloping Deg $12[^{\circ}]$. In this case, cogging torque was about 23.9[mNm]. Cogging torque of previous model is about 40.8[mNm], so sloping notch model is less than previous model by 41.42[%]. Also, if sloping notch model is changed to step-sloping notch model, cogging torque of step-sloping notch model is about 24.82[mNm], Therefore the difference between the two cogging torque is about 3.85[%], so step-sloping notch model can be applied when considering manufacture.
Keywords
Cogging torque; Single-Phase BLDC motor; Sloping notch;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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