New approach to longitudinal magnetic field in drum type machine

Author

Gu, C.L. ; Chalmers, B.J.

Author_Institution

Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

2041

Lastpage

2044

Abstract

Without 3D analysis, the longitudinal distribution of the magnetic field in a drum-type electric machine can be determined two-dimensionally, provided that radial results, fundamental components of the air gap flux density related to each axially-separated part, are obtained in advance by any conventional 2D numerical method. Details on the new approach, including how to bound the domain, how to represent the problem and how to solve it, are presented. As an application, a new type of synchronous machine with a two-part rotor, having a surface permanent magnet part and an axially-laminated anisotropic reluctance part axially-separated on the same shaft, is investigated, with obvious high computational economy and improved accuracy

Keywords

electric machines; machine theory; magnetic fields; numerical analysis; rotors; 2D numerical methods; air gap flux density; axially-laminated anisotropic reluctance; domain bounds; drum-type electric machine; longitudinal magnetic field distribution; surface permanent magnet; synchronous machine; two-part rotor; Anisotropic magnetoresistance; Magnetic analysis; Magnetic anisotropy; Magnetic fields; Magnetic separation; Permanent magnets; Perpendicular magnetic anisotropy; Scanning probe microscopy; Shafts; Synchronous machines;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582712

Filename

582712