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.
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