DocumentCode :
65773
Title :
Analysis of Electromagnetic Performance of Halbach PM Brushless Machines Having Mixed Grade and Unequal Height of Magnets
Author :
Yang Shen ; Zhu, Z.Q.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Volume :
49
Issue :
4
fYear :
2013
fDate :
Apr-13
Firstpage :
1461
Lastpage :
1469
Abstract :
This paper proposes a permanent magnet machine having mixed high-cost NdFeB and low-cost ferrite magnets with modular unequal magnet height poles, i.e., the modular Hat- and T-type magnet poles, together with optimized Halbach magnetization. The investigation shows that the modular T-type magnet poles with mixed magnet grade and unequal side-magnet height exhibit significant potential to achieve low torque ripple, relatively large electromagnetic torque, and high magnet usage efficiency simultaneously.
Keywords :
boron alloys; brushless machines; ferrites; iron alloys; magnetisation; neodymium alloys; permanent magnet machines; permanent magnets; torque; Halbach magnetization; Halbach permanent magnet brushless machines; NdFeB; electromagnetic performance; electromagnetic torque; ferrite magnets; magnet usage efficiency; mixed magnet grade; modular unequal magnet height poles; torque ripple; Air gaps; Brushless machines; Magnetic flux; Magnetization; Torque; Analytical; Halbach magnetization; brushless machine; cost-effective; mixed grade; modular pole; permanent magnet (PM);
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2012.2227147
Filename :
6352915
Link To Document :
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