SOME APPLICATIONS OF THE FINITE ELEMENTS METHOD IN OBSERVATION OF THE MAGNETIC FIELD AND THE THERMAL PROCESSES IN 3 – PHASE INDUCTION MOTORS

The magnetic field of 3 – phase induction motors is studied using the finite elements method and the professional programming system ANSYS Emag. A model of induction motor, presenting a 20 degree sector of the motor, including two stator and two rotor grooves and two casing gills is studied due to the motor’s symmetry. Full pattern of the motor’s magnetic field is obtained in steady-state regime. All magnetic flux density vector flows are calculated and displayed too. Our study enables us to obtain the magnetic field of all induction motor’s parts in different steady-state working regimes.

The transitional and stationary thermal processes in 3 – phase induction motors are studied using the finite elements method and the professional programming system ANSYS Emag too. Full pattern of the motor’s temperature field is obtained as well in transitional and in stationary temperature rate. All heat flows are calculated and displayed too. Our study enables us to obtain the overheat of all induction motor’s parts in different working regimes.