Performance analysis of a three-phase induction motor with double-triple winding layout

This paper presents the performance of three-phase induction motor with a stator winding comprising of a combination of double and triple layer arrangements in slots, here simply referred to as double-triple stator winding layouts. The proposed layout provides a three-phase induction motor with high torque density and greater efficiency than the conventional machine with double winding layout. Field analysis technique is used to show that this winding arrangement has improved harmonic content and the machine performance is computed using Finite Element Method (FEM). Saturation is accounted for in the computation of the inductances. A 1500 W conventional three-phase induction machine with 36 stator slots is first wound as a four-pole double layer and then as a four-pole double-triple layer for the experimental study. Both windings are chorded with one slot with same number of turns per phase and use the same squirrel cage rotor.