Design and Analysis of Basic Model of High-speed Surface-mounted Permanent Magnet Synchronous Motors Based on Subdomain Method

• Published in: Journal of electrical engineering & technology 2023, 18(5), , pp.3635-3646
• Main Authors: Xing, Zezhi, Wang, Xiuhe, Zhao, Wenliang
• Format: Article
• Language: English
• Subjects: Electrical Engineering; Electrical Machines and Networks; Electronics and Microelectronics; Engineering; Instrumentation; Original Article; Power Electronics; 전기공학
• ISSN: 1975-0102; 2093-7423
• DOI: 10.1007/s42835-023-01449-4

This paper presents a design method of the basic model of high-speed surface-mounted permanent magnet synchronous motor (SPMSM) comprehensively considering the mechanical and electromagnetic properties based on the subdomain method. In the rotor design stage, the mechanical stresses of the permanent magnet (PM) and retaining sleeve are investigated and calculated by the subdomain method, the interference pre-stress, centrifugal force, thermal stress, and material anisotropy are accurately considered. For the rotors with different retaining sleeves, the rotor parameters such as the thicknesses of the PM and retaining sleeve and the interference between them considering both electromagnetic performance and stress extreme conditions are determined. In the stator design stage, the performances of motors with different stator structures are analyzed and compared based on the subdomain method considering stator saturation, and the optimal stator structure parameters are determined. Finally, the design scheme of the 2-pole 36-slot high-speed SPMSM that meets the requirements of mechanical and electromagnetic properties is determined, and the comprehensive performance of the motor is verified by the finite element method (FEM).