Finite Element Analysis of Field Distribution and Characteristic Performance of Squirrel Cage Induction Motor with Broken Bars

This paper develops the foundations of a technique for diagnosis and characterization of effects of broken bars in squirrel-cage induction motors based on the comprehensive presentation of a time-stepping coupled finite element state space modeling approach. These studies are performed using the model to compute healthy and fault case performance data, from this data, the fault signatures are extracted. Theoretical approach together with experimental results derived from a two-pole 1.1 kW induction motor confirms the validity of the proposed method. Furthermore this method which might help to develop diagnostics of broken bars and performance evaluation of induction motor has great potential in future applications