Title :
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
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;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230840
