Optimal magnetic design of the stator windings of dual stator winding squirrel-cage induction machines

The magnetic design of a dual stator winding induction machine having a normal squirrel cage rotor and two sets of three phase stator windings with different pole numbers but housed in the standard stator lamination to produce maximum output power is presented. The design seeks to minimize the effective air-gap flux density or to maximize the individual air-gap flux linkage due to the two sets of windings when the effective air-gap flux density is fixed. The advantage of this proposed design method lies in the total output power maximization of the machine by appropriate allocation of the air-gap flux densities due to the sets of windings.