Multi-domain modeling of electric traction drives using Bond Graphs: Application to fault diagnosis

In this work a dynamic model of the induction machine that considers the thermal behavior is developed using bond graphs (BG). The thermal model is based on considering the slots and teeth as independent elements with their own temperature. It corresponds to a real motor used in the tractive wheel of an electric vehicle. The model of the vehicle is also obtained in BG and is coupled to the motor. The complete model allows simulating the whole dynamics in a single model and the analysis of electrical/mechanical/thermal interaction is performed. Simulation results are intended to illustrate this interaction under faulty and healthy conditions in the stator winding. The impact on the mechanical and thermal domain produced by a fault in the electrical domain is also analyzed.