As the polarity of Interpoles is the same as that of the main pole ahead, they induce an emf in the coil (under commutation) which helps the reversal of current. Another function is to neutralize the cross magnetizing effect of armature reaction
As the polarity of Interpoles is the same as that of the main pole ahead, they induce an emf in the coil (under commutation) which helps the reversal of current. Another function is to neutralize the cross magnetizing effect of armature reaction