I have never seen such a motor with 3, 5, 7 poles etc. - always an even number. Why? Physically impossible?
check three phase motors?
I don't know of any induction motor with an odd number pof poles.Refer to www. 3-phase motors.
Convert a 8 poles into a 16 poles is almost impossible because it has limited space for addition 8 coils. Use thinner wire to achieve it result current reduction. WHY NOT USING SIMPLE GEARS COUPLING METHOD ?
Because motors works on a 50-50 winding + and - poles If there is an odd winding do you think the armature will spin ? No Because the electricfield will cause the 1 pole to attract and there will be no turning force since the other opposite pole is important to repetitive turning through the magnetic field. As to make it simple odd poles no turning force even poles will create turning force to the synchronization through the magnetic field.
Poles have to be in pairs. One is positive while the other is negative. Its actually better to use pole pairs in calculations and the way you will see it in many text books etc. but for some reason manufacturers like to state the number in poles.
