Design of impulse magnetizing fixtures for the radial homopolar magnetization of isotropic NdFeB ring magnets

Citation
Cd. Riley et al., Design of impulse magnetizing fixtures for the radial homopolar magnetization of isotropic NdFeB ring magnets, IEEE MAGNET, 36(5), 2000, pp. 3846-3857
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
36
Issue
5
Year of publication
2000
Part
2
Pages
3846 - 3857
Database
ISI
SICI code
0018-9464(200009)36:5<3846:DOIMFF>2.0.ZU;2-V
Abstract
This paper is concerned with the design of homopolar impulse-magnetization fixtures for isotropic NdFeB ring magnets, It discusses the merits of vario us fixture topologies and describes a design methodology that employs both analytical and finite-element techniques. It illustrates the utility of the design methodology by presenting a case study of the homopolar magnetizati on of annular isotropic NdFeB ring magnets for use in a tubular, linear per manent-magnet actuator. It examines the influence of the aspect ratio of th e magnets on the actuator air gap flux density profile, and it compares pre dictions and measurements for different fixture designs.