Determination of severity and location of induction motor rotor cage faults
The application of the finite element method in research of the magnetos field of an induction motor rotor cage asymmetry is discussed. The calculation of the magnetic field in a squirrel cage induction motors forms the basis of further evaluation of the operational behaviour of the motor. Several quantities (magnetic vector potential, flux density, force components, torque, rotor and stator currents) can be determined very precisely. This enables the study of increasing anomaly in magnetic field distribution of an induction motor due to increasing broken rotor bars, which results in magnetic field distribution of an induction motor due to increasing broken rotor bars, which results in a degradation of steady-state and dynamic performance of the induction motors. Correct evaluation of faulty motor performance is a very significant part of condition monitoring and diagnostic procedure in modern supervision of induction motor drives.
induction motors finite element method magnetic fields reliability