Reduction of Rotor Eddy Current Loss in High Speed PM Brushless Machines by Grooving Retaining Sleeve

被引：53

作者：

Shen, Jian-Xin ^{[1
]}

Hao, He ^{[1
]}

Jin, Meng-Jia ^{[1
]}

Yuan, Cheng ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China

[2] Wujiang Nanyuan Elect Apparat Co Ltd, Suzhou 215231, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2013年 / 49卷 / 07期

关键词：

Eddy currents; grooves; high speed machines; permanent magnet (PM) brushless machines; rotor retaining sleeve; MAGNETS;

D O I：

10.1109/TMAG.2013.2243408

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：

Eddy currents might be significant in the rotor of a high speed permanent magnet brushless machine, especially when a metal retaining sleeve is applied. Various methods have been used to reduce the eddy currents. In this paper, a simple method, by grooving the retaining sleeve, is proposed, such that the flowing path of the eddy currents is obscured and the energy loss is thus suppressed. Circumferential, axial and comprehensive grooving are comparatively studied, particularly on the aspects of loss reduction, sleeve mechanical strength, rotor dynamic balance, and manufacture process complexity. It is proved that the circumferential grooving is the most effective for overall performance improvement and the simplest for practical manufacture with little extra cost.

引用

页码：3973 / 3976

页数：4