By Topic

Analytical Modeling Approach to Detect Magnet Defects in Permanent-Magnet Brushless Motors

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

3 Author(s)
J. A. Farooq ; Electr. Eng. & Control Syst. Dept., Univ. of Technol. Belfort-Montbehard, Belfort ; A. Djerdir ; A. Miraoui

The paper presents a novel approach to detect magnet faults such as local demagnetization in brushless permanent-magnet motors. We have developed a new form of analytical model that solves the Laplacian/quasi-Poissonian field equations in the machine's air-gap and magnet element regions. We verified the model by using finite-element software in which demagnetization faults were simulated and electromotive force was calculated as a function of rotor position. We then introduced the numerical data of electromotive force into a gradient-based algorithm that uses the analytical model to locate demagnetized regions in the magnet as simulated in the finite-element package. The fast and accurate convergence of the algorithm makes the model useful in magnet fault diagnostics.

Published in:

IEEE Transactions on Magnetics  (Volume:44 ,  Issue: 12 )