ABSTRACT
Induction (asynchronous) machines are provided with electric windings that are placed in uniform slots located along the periphery of the stator and the rotor (with slot openings toward an airgap) in silicon-steel sheet (laminated), soft magnetic cores. Ac currents of different frequencies, f1 and f2, flow through the electrical windings in the stator and the rotor
(|f2| < |f1| ) [1-3].
