Induction motor

DETAILED DESCRIPTION It is an object of the present invention to provide an inexpensive, rigid induction motor which eliminates a torque ripple therefrom and can serve as a highly precise, variable speed servo motor driven in a wide variable speed range.
In order to achieve the above object of the present invention, there is provided an induction motor including a stator having slots for accommodating a primary winding therein, the stator being adapted to generate a rotary magnetic flux upon application of electrical energy to the primary winding, and a rotor or a moving element having slots for accommodating a secondary winding consisting of coils or a squirrel-cage circuit (not shown in the drawings), the induction motor being adapted to cause the rotor to generate a torque or a thrust by a magnetic flux crossing the secondary winding and a secondary current flowing due to electromagnetic induction in the stator is inserted when the electrical energy is applied to the induction motor to cause electromagnetic induction in the stator and to supply the secondary current to the secondary winding, wherein the stator slots are skewed relative to the rotor slots and a skew amount is an integer multiple of a stator electrical angle of 60.
degree.
, thereby cancelling a torque ripple which is an integer multiple of six times of the primary frequency of the electrical energy.