Mixed-Grade Pole Design for permanent magnet synchronous machines

This paper introduces a design idea of a new kind of pole structure with different magnet grades used in one pole: "the mixed-grade pole design". This structure offers improved demagnetization protection and also brings potential cost savings by optimizing the use of dysprosium in Nd-Fe-B-...

Full description

Saved in:
Bibliographic Details
Published in2007 International Aegean Conference on Electrical Machines and Power Electronics pp. 452 - 457
Main Authors Ruoho, S., Arkkio, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2007
Subjects
Coercive force
Demagnetization
finite-element methods
Laboratories
magnetic field modeling
Magnetic materials
Magnetization
Manufacturing
mixed-grade pole
Paper technology
Permanent magnet machines
Permanent magnets
Remanence
Online AccessGet full text

Cover

More Information
Summary:This paper introduces a design idea of a new kind of pole structure with different magnet grades used in one pole: "the mixed-grade pole design". This structure offers improved demagnetization protection and also brings potential cost savings by optimizing the use of dysprosium in Nd-Fe-B- permanent magnet material. A new demagnetization model with an exponential function is also introduced. The new design idea is compared with a traditional one-grade design by using finite element method electromagnetic simulations combined with the demagnetization model. Finally, the benefits of the new pole structure are discussed.
ISBN:9781424408900
1424408903
DOI:10.1109/ACEMP.2007.4510542