Abstract
Abstact: In this paper, the authors take a particular
look at the effects of combination of different stator winding
configurations in a 40 stator slots, 2-pole, and five-phase
induction machine. They show, through computer simulation,
that the combination of double and triple layer with 19/20 coil
pitch reduced the torque ripple from 19.1%, for the
conventional single layer full pitch, and from 10.6 %, for the
conventional double layer with 19/20 coil pitch having the
same rating, down to 8.7 % while maintaining the torque
average. The same has to be said for the double combination
which is the combination of double and triple layer combined
with slot shift and coil side shift in one slot having 9/10 coil
pitch. This double combination reduces tremendously the
torque ripple from 28.8 %, for a conventional double layer
9/10 coil pitch, down to 10.2 % and still maintained the torque
average. Some other winding combinations reduce both
average and torque ripple