Eddy current loss in a moving-coil tubular permanent magnet motor

Authors
Hor, PJ Zhu, ZQ Howe, D
Citation
Pj. Hor et al., Eddy current loss in a moving-coil tubular permanent magnet motor, IEEE MAGNET, 35(5), 1999, pp. 3601-3603
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
35
Issue
5
Year of publication
1999
Part
2
Pages
3601 - 3603
Database
ISI
SICI code
0018-9464(199909)35:5<3601:ECLIAM>2.0.ZU;2-2
Abstract
The eddy current loss in the thrust rod of an iron-cored, 2-phase, tubular permanent magnet brushless motor is investigated by time-stepped transient finite element analysis. It is shown that the dominant cause of the loss is the permeance modulation which results from the teeth in the laminated thr ust block, whose spacing is the same as the magnet pole-pitch. Loss predict ions are validated by measurements.