Title :
FE-analysis of a soft-mounted two-pole induction motor regarding relative shaft vibrations caused by static rotor eccentricity
Author_Institution :
Drive Technol., Large Drives, Products, Siemens AG, Nuremberg, Germany
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;
Conference_Titel :
Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
978-1-4673-1299-8
DOI :
10.1109/SPEEDAM.2012.6264373
