Study on the Influences of an Outer-Coreless-Rotor Permanent Magnet Synchronous Machine Using Halbach Magnet Array

Cong Xu, Hao Wu, Yuchao Shi, Ning Wang and Liwei Song ()
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Cong Xu: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Hao Wu: Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China
Yuchao Shi: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Ning Wang: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Liwei Song: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China

Energies, 2024, vol. 17, issue 13, 1-14

Abstract: In order to evaluate the influences of the topology design of a Halbach Magnet Array (HA) on the performance of a motor, a PMSM with an outer coreless rotor using a Halbach Magnet Array (HAORPMSM) is proposed in this article. The design parameters of the HA could be separated into dividing methods per pole, magnet thickness, and initial magnetization direction angle. The phase Back-EMF under constant mechanical speed is chosen as the index to measure the performance of the motor. To start with, different dividing methods of the HA are evaluated. After that, the influence of thickness considering the utilization of the magnet is studied. Lastly, the relationship between initial magnetization direction and motor manufacturing is represented. The results show that the HA design meets the optimized performance considering the balance of the amount of magnet usage and manufacturing when using specific HA parameters.

Keywords: permanent magnet synchronous machines; Halbach Magnet Array; outer rotor; magnetization direction; magnet utilization; rotor manufacturing process (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: 2024
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