Cost-Effectiveness Comparison of Coaxial Magnetic Gears With Different Magnet Materials

Author

Mu Chen ; Chau, K.T. ; Wenlong Li ; Chunhua Liu

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China

Volume

50

Issue

2

fYear

2014

fDate

Feb. 2014

Firstpage

821

Lastpage

824

Abstract

This paper presents a comparative study between the nonrare-earth PM and rare-earth PM-based coaxial magnetic gears. First, using finite-element analysis, the electromagnetic performances of four coaxial magnetic gears, which are installed with nonrare- or rare-earth PMs, are analyzed and quantitatively compared based on the same structure. Then, the natural magnetic properties of nonrare- and rare-earth PMs are evaluated and discussed. Finally, the cost effectiveness of coaxial magnetic gears adopting different types of PMs is assessed. The results show that the nonrare-earth PMs, especially the aluminum-nickel-cobalt, are preferred for application to coaxial magnetic gears with emphasis on the cost effectiveness.

Keywords

finite element analysis; gears; magnetic devices; magnetic materials; permanent magnets; aluminum-nickel-cobalt; finite-element analysis; magnet material; natural magnetic property; nonrare-earth PM-based coaxial magnetic gear; rare-earth PM-based coaxial magnetic gear; Ferrites; Gears; Magnetic analysis; Magnetosphere; Rotors; Torque; Cost effectiveness; magnetic gear; nonrare earth; permanent magnet (PM); rare earth;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2281988

Filename

6749226