Performance of Halbach magnetised brushless ac motor

Author

Zhu, Z.Q. ; Xia, Z.P. ; Shi, Y.F. ; Howe, D. ; Pride, A. ; Chen, X.J.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK

fYear

2003

fDate

March 30 2003-April 3 2003

Abstract

In this paper, an anisotropic bonded NdFeB Halbach magnetised ring magnet, which is oriented in powder alignment system during injection moulding and subsequently impulse magnetised, is employed. The features of such a Halbach magnetised machine, in terms of the airgap field distribution, and the back-emf and cogging torque waveforms, etc. have been compared with those which result with a Halbach magnet having discrete magnet segments have previously been compared.

Keywords

AC motors; boron alloys; brushless machines; ferromagnetic materials; injection moulding; iron alloys; magnetic anisotropy; neodymium alloys; torque; Halbach magnetised brushless ac motor; NdFeB; airgap field distribution; anisotropic bonded NdFeB Halbach magnetised ring magnet; back-emf waveforms; cogging torque waveforms; discrete magnet segments; injection moulding; AC motors; Couplings; Inductance; Machine windings; Magnetic anisotropy; Magnetic field measurement; Magnetic flux; Perpendicular magnetic anisotropy; Saturation magnetization; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2003. INTERMAG 2003. IEEE International

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7647-1

Type

conf

DOI

10.1109/INTMAG.2003.1230840

Filename

1230840