By Topic

Finite-Element Analysis of Magnetically Saturated D-C Machines

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
M. V. K. Chari ; Department of Electrical Engineering, McGill University ; P. Silvester

The magnetic field distribution in saturated iron parts of electric machines is defined by a nonlinear quasi-Poisson equation. Solution of this equation is equivalent to minimization of a nonlinear energy functional. A recent paper has proposed approximate minimization by means of a finite element method, using triangular finite elements and a quadratically convergent iteration scheme. This new method is now applied to a 5 KW d-c machine, whose no-load and on-load characteristics are predicted and compared with experimental measurements. Good agreement is obtained. Since the pole axis is not an axis of magnetic symmetry under load, a periodicity condition is introduced to relate all magnetic vector potentials to those one pole pitch away. This condition is enforced by means of a special connection matrix, whose derivation is shown in the paper. An automatic plotting program has been developed for graphical plotting of the flux distributions, and several field plots for the machine are shown.

Published in:

IEEE Transactions on Power Apparatus and Systems  (Volume:PAS-90 ,  Issue: 5 )