Analytical Method of Rotor Eddy Current Loss for High-Speed Surface-Mounted Permanent Magnet Motor with Rotor Retaining Sleeve

被引：0
作者：
Tong W. [1 ]
Hou M. [1 ]
Sun L. [1 ]
Wu S. [1 ]
机构：
[1] National Engineering Research Center for Rare-Earth Permanent Magnet Machines, Shenyang University of Technology, Shenyang
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 16期
关键词：
accurate subdomain model; eddy current reaction; High-speed permanent magnet motor; loss separation experiment; periodic boundary conditions;
D O I：
10.19595/j.cnki.1000-6753.tces.210424
中图分类号：
学科分类号：
摘要：
When calculating the rotor eddy current loss (RECL) by the existing two-dimensional accurate subdomain method, in order to facilitate the solution of the coefficient matrix, the influence of the eddy current reaction is usually ignored. For high-speed permanent magnet synchronous motors (HS-PMSM) powered by converters, the armature current contains a large number of time harmonics, and the eddy current reaction has a great influence on the RECL. Ignoring the eddy current reaction seriously affects the calculation accuracy. Based on the accurate subdomain method, an analytical model for RECL analysis in HS-PMSM is established by solving the diffusion equation including time derivative and conductor motion velocity in the active region. An equation is established in the slot opening considering the influence of the slot opening on the magnetic field to improve the calculation accuracy, and periodic boundary conditions are established using the periodicity of the motor to increase the calculation speed. Then, the eddy current loss changes caused by time-space harmonics are analyzed at different inverter switching frequencies and air gap lengths. Through a loss separation experiment of a 7.5kW amorphous alloy HS-PMSM, the comparison of the analytical results, the finite element results and experimental results verifies the analytical model. © 2022 Chinese Machine Press. All rights reserved.
引用
收藏
页码：4047 / 4059
页数：12
相关论文
共 30 条
  • [1] Shen Jianxin, Han Ting, Yao Lei, Et al., Is higher resistivity of magnet beneficial to reduce rotor eddy current loss in high-speed permanent magnets AC machines?, Transactions of China Electrotechnical Society, 35, 9, pp. 2074-2078, (2020)
  • [2] Zhang Fengge, Du Guanghui, Wang Tianyu, Et al., Review on development and design of high speed machines, Transactions of China Electrotechnical Society, 31, 7, pp. 1-18, (2016)
  • [3] Ma Jie, Zhu Z Q., Optimal split ratio in small high speed PM machines considering both stator and rotor loss limitations, CES Transactions on Electrical Machines and Systems, 3, 1, pp. 3-11, (2019)
  • [4] Cheng Xin, Xu Wei, Du Guanghui, Et al., Novel rotors with low eddy current loss for high speed permanent magnet machines, CES Transactions on Electrical Machines and Systems, 3, 2, pp. 187-194, (2019)
  • [5] Yamazaki K, Fukushima Y, Sato M., Loss analysis of permanent-magnet motors with concentrated windings− variation of magnet eddy-current loss due to stator and rotor shapes, IEEE Transactions on Industry Applications, 45, 4, pp. 1334-1342, (2009)
  • [6] Fu Xinghe, Xu Da, Lin Mingyao, Et al., Calculation and analysis of rotor eddy current loss of permanent magnet-inductor hybrid excited synchronous generator, IEEE Transactions on Magnetics, 49, 5, pp. 2389-2392, (2013)
  • [7] Gao Fengyang, Qi Xiaodong, Li Xiaofeng, Et al., Optimization design of partially-segmented Halbach permanent magnet synchronous motor, Transactions of China Electrotechnical Society, 36, 4, pp. 787-800, (2021)
  • [8] Ishak D, Zhu Z Q, Howe D., Eddy-current loss in the rotor magnets of permanent-magnet brushless machines having a fractional number of slots per pole, IEEE Transactions on Magnetics, 41, 9, pp. 2462-2469, (2005)
  • [9] Wang Jiabin, Atallah K, Chin R, Et al., Rotor eddy-current loss in permanent-magnet brushless AC machines, IEEE Transactions on Magnetics, 46, 7, pp. 2701-2707, (2010)
  • [10] Zhu Z Q, Ng K, Schofield N, Et al., Improved analytical modelling of rotor eddy current loss in brushless machines equipped with surface-mounted permanent magnets, IEE Proceedings-Electric Power Applications, 151, 6, pp. 641-650, (2004)
123