Quantitative Analysis of Electromagnetic Forces by Decoupling Air-Gap Field Modulation and Force Modulation in Rotor-Permanent-Magnet Machines

被引:11
|
作者
Yin, Hang [1 ]
Zhang, Hengliang [1 ]
Hua, Wei [1 ]
Wu, Zheng [1 ]
Li, Chen [1 ]
机构
[1] Southeast Univ, Sch Elect Engn, Nanjing 210096, Peoples R China
基金
国家重点研发计划; 中国国家自然科学基金;
关键词
Harmonic analysis; Air gaps; Modulation; Atmospheric modeling; Vibrations; Analytical models; Force; Electromagnetic forces (EFs); modulation effect; permanent-magnet (PM) machines; quantitative analysis; vibration; VIBRATION PERFORMANCE; TOOTH MODULATION; RADIAL FORCE; MOTORS;
D O I
10.1109/TIE.2022.3161759
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This article proposes a quantitative analysis model for the electromagnetic forces in rotor-permanent-magnet (rotor-PM) machines, decoupling the air-gap field modulation and the force modulation. First, a unified analytical model of the equivalent concentrated forces (ECFs) is deduced based on the air-gap flux density (AFD) harmonics. Second, the air-gap field modulation and the force modulation are decoupled by the ECF coefficient. Then, to determine the contributions of the modulated AFD harmonics, a quantitative analytical method is proposed. On this basis, the vibration performance of a 12-slot/10-pole (12s/10p) interior PM machine is investigated considering the modulation effect. The results reveal that the influences of rotation speed, PM-excited field, and armature field on the vibration can be clearly represented by the proposed method. Finally, the modal test and the acceleration measurement are conducted to validate the analysis.
引用
收藏
页码:1310 / 1320
页数:11
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