FEM Analysis for Comparative Investigation of The Stator Circuit Connexion Impact on The Induction Motor Broken Bar Fault Higher Order Signatures

The induction motor operating reliability is a major issue of modern industry since faults may occur and disrupt the production process. In this work, the diagnostic potential of the line or phase current frequency spectrum for the identification of the broken bar fault in the cage induction motor is investigated depending on the stator three-phase winding configuration. The work is carried out with transient finite element method (FEM) simulations considering motor operation under nominal mechanical load. The study will concern the traditional broken bar fault signatures but also higher order harmonics and will lead to a comparison between their reliability to detect the broken bar fault, with respect to prior work.