Predicting the level of airgap eccentricity in operating three-phase induction motors, by Park´s vector approach

The authors report on a study carried out to predict the level of airgap static eccentricity in operating three-phase induction motors by Park´s vector approach. Two kinds of normalized severity factor are introduced, their values being calculated by means of postprocessing computational algorithms of the stator current Park´s vector data. Experimental results demonstrate that strong eccentricity levels are easily predicted for different load values, either with a delta or a wye connection of machine stator windings