Numerical computation of torques in permanent magnet motors by Maxwell stresses and energy method

Author

Marinescu, M. ; Marinescu, N.

Author_Institution

Ing.-Buro fur Magnettech., Frankfurt, West Germany

Volume

24

Issue

1

fYear

1988

fDate

1/1/1988 12:00:00 AM

Firstpage

463

Lastpage

466

Abstract

A numerical computation of torques for three different permanent magnet excited motors is presented. In all cases the no-load torques have been derived from the vector potential, which is computed by the finite-element method, both by directly applying the Maxwell stress formula and as the derivative of the magnetostatic energy with respect to the rotation angles. In one of the cases the on-load torques have also been computed. Instead of the energy function, a total work function at constant current is used. The agreement between the torque values obtained by the two methods is very good

Keywords

finite element analysis; magnetostatics; permanent magnet motors; torque; Maxwell stress formula; finite-element method; magnetostatic energy; numerical computation; permanent magnet excited motors; rotation angles; torques; total work function; vector potential; Electromagnetic forces; Error correction; Finite element methods; Forging; Grid computing; Magnetic materials; Magnetic noise; Magnetostatics; Permanent magnet motors; Surface treatment; Tensile stress; Torque;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.43957

Filename

43957