PURPOSE: To obtain a preferable motor so as to improve starting properties and to reduce a starting time by so composing a phase switching unit of a two-stator induction motor as to constitute a switch required for switching to a minimum limit while having peculiar torque characteristic of an induction motor having two stators.

CONSTITUTION: Two stator windings 10, 11 of an induction motor having two rotor cores 2, 3, a rotor 7 formed of a plurality of conductors connected to the cores, and two stators 12, 13 provided oppositely to the cores 2, 3, are so annularly connected that the windings of the same phase are disposed adjacent in series in reverse polarities, and connecting points U1-U2, V1-V2, W1-W2 of the windings of the same phase are connected to a power source through a changeover switch S2. Further, connecting points X1-Z2, Y1-X2, Z1-Y2 of the windings of different phases are connected to the power source through a changeover switch S1, and connecting points X1-Z2, Y1-X2, Z1-Y2 of the windings of different phases are short-circuited by a changeover switch S3.