Comparison Between Dual-Permanent-Magnet-Excited Machines With Fewer Stator Poles and Fewer Rotor Poles

被引：12

作者：

Shi, Yujun ^{[1
,2
]}

Niu, Shuangxia ^{[1
]}

Wei, Jin ^{[2
]}

Jian, Linni ^{[2
]}

Liu, Ruifang ^{[3
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

[2] South Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

[3] Beijing Jiao Tong Univ, Dept Elect Engn, Beijing 100044, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Direct drive; field modulation; permanent magnet (PM) machine; torque density; DESIGN;

D O I：

10.1109/TMAG.2014.2361609

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：

The purpose of this paper is to quantitatively compare two types of dual-permanent-magnet-excited (DPME) machines, one is with fewer stator poles and the other is with fewer rotor poles. Four different magnetization patterns of permanent magnets (PMs) are considered. Calculation results obtained using finite-element analysis demonstrate that with exactly the same usage of magnets and copper windings, the DPME machine with fewer rotor poles can offer significantly higher electromagnetic torque than that with fewer stator poles, and the torque ripple of the DPME machine with fewer rotor poles is lower than that with fewer stator poles. Another finding is that DPME machines can offer satisfactorily high-torque capability only when the two sets of PMs are with the same magnetization directions.

引用

页数：4

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