期刊
IEEE ACCESS
卷 9, 期 -, 页码 14437-14445出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2021.3052545
关键词
Rotors; Stators; Torque; Air gaps; Reluctance motors; Windings; Stator windings; Dual PM; electric machines; finite element methods; permanent magnet machines; torque density
资金
- Research Grant Council of the Hong Kong Special Administrative Region (SAR) Government under the project PolyU [152185/18E]
A novel dual permanent magnet machine with Halbach segmentation flux modulation is proposed in this paper, which achieves high torque density and power efficiency, while reducing torque ripple.
A novel dual permanent magnet (PM) machine with Halbach segmentation flux modulation is proposed in this paper, which is evolved from a flux switching PM machine (FSPM). In order to improve the performance of the FSPM, several PM arrangement methods have been adopted and three new different structures have been investigated. To achieve a fair comparison, all the structures are under the same size and rotate at the same speed. The performances of output torque and back EMF are compared. The analysis results show that the dual PM with Halbach segmentation has the highest torque density and power efficiency. The torque is improved by 100.3% from the FSPM while the PM volume does not increase too much. The unique of this best structure is that it not only combines the vernier machine and FSPM machine together, but also reduces the torque ripple. The performance of the motor is verified by the simulation using finite-element analysis (FEA).
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