FE-analysis of a soft-mounted two-pole induction motor regarding relative shaft vibrations caused by static rotor eccentricity

Author

Werner, U.

Author_Institution

Drive Technol., Large Drives, Products, Siemens AG, Nuremberg, Germany

fYear

2012

fDate

20-22 June 2012

Firstpage

1448

Lastpage

1455

Abstract

The paper presents an FEM-based vibration analysis of a two-pole induction motor, mounted on a soft machine foundation, regarding electromagnetic excitation due to static rotor eccentricity. Static rotor eccentricity causes inhomogeneities in the air gap of an induction motor, which lead to an oscillating electromagnetic force that acts on the rotor and on the stator. This magnetic force is implemented in a finite-element model to analyze the relative displacements in the sleeve bearings between the bearing shells and shaft journals and the relative displacements in the air gap between the rotor core and stator core.

Keywords

air gaps; cores; finite element analysis; induction motors; machine bearings; magnetic forces; rotors; shafts; stators; vibrations; FE-analysis; FEM-based vibration analysis; air gap; bearing shell; electromagnetic excitation; finite-element model; magnetic force; oscillating electromagnetic force; relative displacement; relative shaft vibration; rotor core; shaft journal; sleeve bearing; soft-mounted two-pole induction motor; static rotor eccentricity; stator core; Automation; Power electronics; FE-Analysis; magnetic forces; rotor dynamics; shaft vibrations; static eccentricity; two-pole induction motor;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on

Conference_Location

Sorrento

Print_ISBN

978-1-4673-1299-8

Type

conf

DOI

10.1109/SPEEDAM.2012.6264373

Filename

6264373