Vibration of induction motor rotor in rotating magnetic field - (Case of two-pole motor)

Citation
Y. Iwata et al., Vibration of induction motor rotor in rotating magnetic field - (Case of two-pole motor), JSME C, 44(3), 2001, pp. 603-609
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING
ISSN journal
1344-7653 → ACNP
Volume
44
Issue
3
Year of publication
2001
Pages
603 - 609
Database
ISI
SICI code
1344-7653(200109)44:3<603:VOIMRI>2.0.ZU;2-C
Abstract
The rotor vibration of two-pole induction motor with rotating magnetic fiel d has been investigated. The vibration is measured at any relative location of the stator and the rotor with various power supply frequencies in the e xperiment and is analyzed in consideration of mechanical factors of the rot or. The following conclusion is obtained through the experiment and the ana lysis; (1) 2 omega vibration of twice the power supply frequency omega is g enerated because of offset between the stator center and the gyrational cen ter of the rotor. (2) Two vibrations of omega (1 - s) and omega (1 + s) whe re s is slip ratio are generated because of the rotor unbalance or the disa greement between the gyrational center and geometrical center of the rotor. (3) An unstable vibration is predicted in the analysis when the power supp ly frequency is equal to natural frequency of the rotor, however, the unsta ble vibration was not generated in the experiment because of the damping.