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Article

Research on Stator Slot and Rotor Pole Combination and Pole Arc Coefficient in a Surface-Mounted Permanent Magnet Machine by the Finite Element Method

School of Control Science and Engineering, Tiangong University, Tianjin 300387, China
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Author to whom correspondence should be addressed.
World Electr. Veh. J. 2021, 12(1), 26; https://0-doi-org.brum.beds.ac.uk/10.3390/wevj12010026
Received: 26 January 2021 / Revised: 9 February 2021 / Accepted: 10 February 2021 / Published: 13 February 2021
(This article belongs to the Special Issue Novel Permanent Magnet Machines and Drives for Electric Vehicles)
A surface-mounted permanent magnet (SPM) machine is widely used in many auxiliary parts of an electric vehicle, so its design level directly influences the performance of the electric vehicle. In the design process of the SPM machine, selecting the appropriate stator slot and rotor pole combination and pole arc coefficient is a necessary and important step. Therefore, in this paper, a 750 W machine is set as an example to research stator slot and rotor pole combinations and pole arc coefficients for the SPM machine. First, the design schemes of machines adopting different stator slot and rotor pole combinations are determined according to the winding coefficient, stator size, and electromagnetic performance requirements. Further, finite element models of SPM machines with different stator slot and rotor pole combinations are established by Ansys Maxwell. On this basis, the back electromotive force (back EMF), cogging torque, electromagnetic torque, and loss and efficiency of SPM machines are calculated and compared to select the better stator slot and rotor pole combinations. Further, effects of pole arc coefficient on cogging torque and electromagnetic torque are also researched to guide the selection of the pole arc coefficient in the design process of the SPM machine. Conclusions achieved in this paper will provide guidance for design of the SPM machine. View Full-Text
Keywords: surface-mounted permanent magnet machine; stator slot and rotor pole combination; pole arc coefficient; electromagnetic performance surface-mounted permanent magnet machine; stator slot and rotor pole combination; pole arc coefficient; electromagnetic performance
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MDPI and ACS Style

Guo, L.; Wang, H. Research on Stator Slot and Rotor Pole Combination and Pole Arc Coefficient in a Surface-Mounted Permanent Magnet Machine by the Finite Element Method. World Electr. Veh. J. 2021, 12, 26. https://0-doi-org.brum.beds.ac.uk/10.3390/wevj12010026

AMA Style

Guo L, Wang H. Research on Stator Slot and Rotor Pole Combination and Pole Arc Coefficient in a Surface-Mounted Permanent Magnet Machine by the Finite Element Method. World Electric Vehicle Journal. 2021; 12(1):26. https://0-doi-org.brum.beds.ac.uk/10.3390/wevj12010026

Chicago/Turabian Style

Guo, Liyan, and Huimin Wang. 2021. "Research on Stator Slot and Rotor Pole Combination and Pole Arc Coefficient in a Surface-Mounted Permanent Magnet Machine by the Finite Element Method" World Electric Vehicle Journal 12, no. 1: 26. https://0-doi-org.brum.beds.ac.uk/10.3390/wevj12010026

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