Reduction of Rotor Eddy-Current Losses for Surface PM Machines With Fractional Slot Concentrated Windings and Retaining Sleeve

被引：30
作者：
Wu, Leilei [1 ,2 ]
Qu, Ronghai [1 ]
Li, Dawei [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Sch Elect & Elect Engn, Wuhan 430074, Peoples R China
[2] Linyi Univ, Sch Automobile Engn, Linyi 276000, Peoples R China
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2014年 / 50卷 / 11期
基金：
国家高技术研究发展计划(863计划);
关键词：
Damping rings; eddy-current loss; fractional slot concentrated winding (FSCW); sleeve; surface permanent magnet (SPM) machines; BRUSHLESS MACHINES;
D O I：
10.1109/TMAG.2014.2320791
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
High strength nonmagnetic metallic retaining sleeve is widely used in surface permanent magnet (SPM) machines for mechanical reliability, especially to high speed machines. Rotor eddy-current losses would be significantly increased in fractional slot concentrated winding (FSCW) SPM machines using sleeve. In this paper, the novel structure with copper damping rings inserted in rotor lamination is proposed. A current will be induced in the damping rings in reaction to the nonsynchronous harmonics field in the rotor, therefore, the eddy-current losses in sleeve and magnet will be reduced. FSCW SPM machines with common slot and pole combination such as 9-slot/8-pole, 12-slot/10-pole, and 24-slot/22-pole are investigated by the finite element analysis tools, and simulation results indicate that the eddy-current loss in sleeve, particularly on the single layer windings, is significantly reduced using the proposed structure.
引用
收藏
页数：4
相关论文
共 5 条
[1]   Theory and Design of Fractional-Slot Multilayer Windings [J].
Alberti, Luigi ;
Bianchi, Nicola .
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2013, 49 (02) :841-849
[2]   Eddy Current Reduction in High-Speed Machines and Eddy Current Loss Analysis With Multislice Time-Stepping Finite-Element Method [J].
Niu, Shuangxia ;
Ho, S. L. ;
Fu, W. N. ;
Zhu, Jianguo .
IEEE TRANSACTIONS ON MAGNETICS, 2012, 48 (02) :1007-1010
[3]   Eddy-Current Loss Minimization in Conducting Sleeves of Surface PM Machine Rotors With Fractional-Slot Concentrated Armature Windings by Optimal Axial Segmentation and Copper Cladding [J].
Shah, Manoj R. ;
El-Refaie, Ayman M. .
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2009, 45 (02) :720-728
[4]   Reduction of Rotor Eddy Current Loss in High Speed PM Brushless Machines by Grooving Retaining Sleeve [J].
Shen, Jian-Xin ;
Hao, He ;
Jin, Meng-Jia ;
Yuan, Cheng .
IEEE TRANSACTIONS ON MAGNETICS, 2013, 49 (07) :3973-3976
[5]   Rotor eddy-current loss in permanent magnet brushless machines [J].
Toda, H ;
Xia, ZP ;
Wang, JB ;
Atallah, K ;
Howe, D .
IEEE TRANSACTIONS ON MAGNETICS, 2004, 40 (04) :2104-2106
1