Design and Analysis of Two Permanent-Magnet-Assisted Bearingless Synchronous Reluctance Motors with Different Rotor Structure

Yizhou Hua, Huangqiu Zhu, Min Gao and Zongyou Ji
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Yizhou Hua: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Huangqiu Zhu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Min Gao: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Zongyou Ji: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China

Energies, 2021, vol. 14, issue 4, 1-17

Abstract: The traditional bearingless synchronous reluctance motor (BSynRM) with salient pole rotor has some drawbacks such as high suspension force ripple, low torque density and low power factor. To overcome the above shortcomings, the permanent-magnet-assisted bearingless synchronous reluctance motor (PMa-BSynRM) is proposed. In this paper, two types of PMa-BSynRM rotors with the same number of permanent magnets but different magnetic barrier structures are designed. A traditional BSynRM with a salient pole rotor is introduced, and the electromagnetic and vibration characteristics of the three BSynRM are analyzed and compared. Firstly, the rotor structures of the two PMa-BSynRMs are designed, and the operation principle of the BSynRM is introduced. Secondly, electromagnetic characteristics of the three motors are analyzed and compared in detail using FEA software. Thirdly, the vibration analysis of the three motors is carried out. Finally, the experimental prototype platforms are built. The FEA and experimental results verify that the designed PMa-BSynRM can improve the power factor and torque density of traditional BSynRMs, and the most superior BSynRM among the three is identified.

Keywords: bearingless synchronous reluctance motor; electromagnetic analysis; finite element analysis; vibration analysis (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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