Optimal Design of Step-Sloping Notches for Cogging Torque Minimization of Single-Phase BLDC Motors

Yong-woon Park, Jae-sub Ko and Dae-kyong Kim
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Yong-woon Park: Energy Innovative Industry R&D Department, Green Energy Institute, Mokpo 58656, Korea
Jae-sub Ko: Smart Energy Institute, Sunchon National University, Suncheon 57922, Korea
Dae-kyong Kim: Department of Electrical Engineering, Sunchon National University, Suncheon 57922, Korea

Energies, 2021, vol. 14, issue 21, 1-15

Abstract: This paper presents a method for reducing the cogging torque for a sloping notch with two notches applied on the stator teeth. The accuracy of FEA was confirmed by a comparison with a previous model using an asymmetric notch for the experiment data and 3D FEA results, followed by a comparison of the cogging torque of a two notches model and a sloping notch model. The sloping notch model was modified to a step-sloping notch model in consideration of a potential manufacturing process. The optimal design for minimizing the cogging torque was developed considering the sloping degree, angle, position, and size of the notches. As the optimal design result, the cogging torque on the optimal model was reduced. Finally, the analysis and optimal design results were confirmed by FEA.

Keywords: tapered air-gap; sloping notch; optimal design; cogging torque; single-phase brushless DC motor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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