Bearing housing vibrations in soft mounted two-pole induction motors caused by static rotor eccentricity

Author

Werner, Ulrich

Author_Institution

P R&D 2, Ind. Sector, Nuremberg, Germany

fYear

2011

fDate

11-13 May 2011

Firstpage

1

Lastpage

6

Abstract

The paper shows a theoretical analysis of the sleeve bearing housing vibrations of soft mounted two-pole induction motors, caused by static rotor eccentricity. By neglecting field damping effects and considering maximum homopolar flux, a maximum radial magnetic force is calculated - as a worst case - acting on the rotor and on the stator in the smallest air gap of the motor and oscillating with double supply frequency. This electromagnetic force is implemented in an analytical machine dynamic model and the sleeve bearings housing vibrations are calculated.

Keywords

induction motors; machine bearings; machine insulation; rotors; vibrations; air gap; analytical machine dynamic model; double-supply frequency; electromagnetic force; homopolar flux; radial magnetic force; sleeve bearing housing vibrations; soft mounted two-pole induction motors; static rotor eccentricity; stator; theoretical analysis; Damping; Magnetic forces; Magnetic levitation; Magnetomechanical effects; Rotors; Stators; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, Energy and Electrical Drives (POWERENG), 2011 International Conference on

Conference_Location

Malaga

ISSN

2155-5516

Print_ISBN

978-1-4244-9845-1

Electronic_ISBN

2155-5516

Type

conf

DOI

10.1109/PowerEng.2011.6036539

Filename

6036539