Analysis of Cogging Torque of Permanent Magnet Motors Under Mixed-Eccentricity and Manufacturing Tolerances

被引：3
作者：
Zhao, Yue [1 ]
Zhang, Shuo [1 ]
Zhang, Chengning [1 ]
Yang, Guohui [2 ]
Yang, Yongxi [1 ]
机构：
[1] Beijing Inst Technol, Sch Mech & Vehicle Engn, Beijing 100811, Peoples R China
[2] Beijing Inst Precis Mechatron & Controls, Lab Aerosp Serv Actuat & Transmiss, Beijing 100076, Peoples R China
来源：
IEEE ACCESS | 2024年 / 12卷
关键词：
Rotors; Torque; Forging; Manufacturing; Harmonic analysis; Stators; Analytical models; Permanent magnet motors; mixed-eccentricity (ME); manufacturing tolerances; additional harmonic components (AHCs) of cogging torque; robust design; ROTOR ECCENTRICITY; SYNCHRONOUS MOTORS; OPTIMIZATION; FAULT; MODEL; POLE;
D O I：
10.1109/ACCESS.2024.3351174
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The rotor eccentricity and manufacturing tolerances caused by unavoidable uncertainties in the process of manufacturing deteriorate the cogging torque of permanent magnet (PM) motors. To guide the design and optimization of PM motors, this paper proposes an analytical model to reveal the effects of mixed-eccentricity (ME) and manufacturing tolerances on the harmonic components of cogging torque. A coefficient is introduced to intuitively characterize the impact of ME on the distribution of the air-gap length. Then a modified analytical model is developed to theoretically identify the additional harmonic components (AHCs) of cogging torque associated with the eccentricity and tolerances. And the main AHCs of cogging torque are quantitatively determined through the finite element method. Finally, suggestions to improve the robustness considering uncertainties by selecting pole/slot combination and pole-arc ratio are proposed.
引用
收藏
页码：6672 / 6683
页数：12
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