Interest in Skew slots

History

At its origin, the utilization of the skew slots rotor was used in order to provide a starting torque in the case of motors having an equal number of stator and rotor slots.

Interest

Although it has been demonstrated that the start of an asynchronous machine could be obtained by a judicious choice of the number of stator or rotor slots the swinging principle of armatures has never been abandoned in the conception of electromotors (synchronous and asynchronous).

Indeed, the swinging of an armature can minimize certain drawbacks, such as the torque pulsations, the supplementary losses and the harmonics (of torque and current).