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

被引：63
|
作者：
Shah, Manoj R. [1 ]
El-Refaie, Ayman M. [1 ]
机构：
[1] GE Global Res Ctr, Elect Machines & Drives Lab, Niskayuna, NY 12309 USA
来源：
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2009年 / 45卷 / 02期
关键词：
Axial segmentation; concentrated; copper cladding; eddy current; flux weakening; fractional slot; high speed; permanent magnet (PM); sleeve; surface; synchronous machines; winding; SHIELD;
D O I：
10.1109/TIA.2009.2013599
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
When a nonmagnetic high-strength metallic retaining sleeve offers advantages over a nonmetallic (e.g., carbon fiber) one, it is possible to consider the application of a high-conductivity shield "coating" on this sleeve to reduce the surface eddy-current losses due to nonsynchronous fields. One can start by using a Maxwell's equation-based analytical model to "screen" for the optimal shield thickness and then employ a "2.5D" finite-element method that accounts for periodic fields and finite rotor length, including axial segmentation and/or copper cladding. These are quantified to help design a low-loss rotor sleeve for a surface permanent-magnet machine with fractional-slot concentrated armature winding. With this type of winding, the sleeve losses can be significant due to its rich (read parasitic) asynchronous harmonic armature reaction MMF content.
引用
收藏
页码：720 / 728
页数：9
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