Modeling of a permanent-magnet excited synchronous machine with bearing damage

The detection of bearing damage using the stator current analysis is an important issue in condition monitoring. The modeling of a bearing damage can help to generate data for different loads and faults. These simulation data can be used to develop fault detection and classification algorithms. The aim of this work is to develop a model for the bearing damage effects, which enables the simulation of local bearing damage with different sizes. This model is integrated in the model of the permanent-magnet synchronous machine (PMSM) in order to illustrate the impact of the damage on the stator current. Experiments confirm the simulations results of the proposed approach.