Consider the two-pole two-phase induction motor having two windings displaced 90° in space shown in Figure.The fields produced by the windings are given by Ba = Kia(t) cos(θ ) and Bb = Kib(t) cos( θ-90°). The two-phase source produces currents given by ia(t) = Im cos( t) and ib(t) = Im cos( ωt- 90° ). Show that the total field rotates. Determine the speed and direction of rotation. Also find the maximum flux density of the rotating field in terms of K and Im.
