Efficient Simplified Physical Faulty Model of a Permanent Magnet Synchronous Generator Dedicated to the Stator Fault Diagnosis Part I: Faulty Model Conception

This paper proposes an original, simple, and fast permanent magnet synchronous generator model implemented with a new conception on the graphic interface of MATLAB/Simulink environment. The obtained physical model suggests a new way to easily carry out different types of stator faults such as interturns short-circuit faults, phase-to-phase faults, and phase-to-ground faults, as well as simultaneous multifaults. This is handled by connecting the two desired points in the stator on the graphic interface of Simulink exactly as they can be carried out in the experimental tests. This model has the originality to take into account the arrangement of the stator windings of a multipole machine by differentiating between the windings under the same pole-pair and those under different pole-pairs. A comparison between the simulated and the experimental results is done to verify the behavior of the proposed model in both healthy and faulty modes under different operating speeds. The good comparison results lead to validate the correct behavior of the proposed model with a satisfactory accuracy.