Analytical field computation of a tubular permanent-magnet linear motor

Author

Bianchi, Nicola

Author_Institution

Dept. of Electr. Eng., Padova Univ., Italy

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3798

Lastpage

3801

Abstract

This paper deals with a tubular slotless linear motor with surface-mounted permanent magnets (PMs). The magnetic field strength and flux density due to the PMs are analytically computed by applying Maxwell´s equations. The field problem is solved by introducing a convenient approximation in the PM magnetization, without loss of accuracy in the final solution. The agreement of the analytical results with those obtained by the finite-element method shows the proposed field computation particularly suitable for implemention in motor design software, for a fast analysis of the PM linear motor

Keywords

Maxwell equations; brushless DC motors; finite element analysis; linear motors; magnetic flux; permanent magnet motors; Maxwell´s equations; finite-element method; flux density; magnetic field strength; motor design software; slotless linear motor; surface-mounted permanent magnets; tubular permanent-magnet linear motor; Finite element methods; Laplace equations; Magnetic analysis; Magnetic fields; Magnetization; Maxwell equations; Permanent magnet motors; Permeability; Poisson equations; Software design;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908373

Filename

908373