Effect of Radial Magnetic Forces in Permanent Magnet Motors With Rotor Eccentricity

Author

Li, J.T. ; Liu, Z.J. ; Nay, L.H.A.

Author_Institution

Sch. of Electr. Eng., Xi´´an Jiaotong Univ.

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2525

Lastpage

2527

Abstract

This paper studies radial magnetic forces developed in permanent magnet motors having rotor eccentricity. Such forces represent the source of magnetically induced vibration in a disk-spindle assembly, and are of concern in design stage. A new analytical model suitable for studying the relationship between eccentricity effect and design parameters of slotted permanent magnet motors is introduced. The effectiveness of the model to study the effects of the rotor eccentricity and other leading design parameters is demonstrated through comparisons with numerical simulations

Keywords

magnetic forces; numerical analysis; permanent magnet motors; rotors; vibrations; disk-spindle assembly; magnetically induced vibration; permanent magnet motors; radial magnetic forces; rotors eccentricity; Analytical models; Brushless DC motors; DC motors; Magnetic analysis; Magnetic forces; Numerical simulation; Permanent magnet motors; Rotors; Stators; Vibrations; Permanent magnet motor; rotor eccentricity; unbalanced magnetic pull;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.896204

Filename

4202785