Analysis and Design of Magnetic Pole Shape in Linear Permanent-Magnet Machine

Author

Tavana, Nariman Roshandel ; Shoulaie, Abbas

Author_Institution

Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran

Volume

46

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

1000

Lastpage

1006

Abstract

In this paper, in order to achieve the sinusoidal back electromotive force (EMF) waveform in a permanent-magnet machine, which is closely related to its magnet shape, we have used magnet arc shaping technique. An analytical analysis based on Maxwell equations is proposed for calculating magnetic field and thrust/torque. Then the accuracy of the presented method in modeling of machine is verified by the finite-element method. Finally, a magnet shape design is carried out based on the analytical method to produce sine air-gap magnetic field. The results show an enhancement in optimized motor performance.

Keywords

Maxwell equations; air gaps; finite element analysis; linear machines; magnetic fields; magnetic flux; permanent magnet machines; Maxwell equations; air-gap magnetic fields; finite-element method; linear permanent-magnet machine; magnet arc shaping; magnetic flux; magnetic pole shape; sinusoidal back electromotive force waveform; Arc-shaped magnetic pole; finite-element method; linear synchronous motor; permanent-magnet machine;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2037951

Filename

5353721