An Additional Short-Circuited Stator Winding in Flux-Barriers to Improve the Machine Performance

In this paper a new additional short-circuited stator winding in flux-barriers is proposed. The short-circuited stator winding is excited inductively by the supplied winding in the stator. As machines with flux-barriers in the stator use a higher harmonic as working harmonic, this working harmonic can be enhanced by the additional short-circuited stator winding while parasitic harmonics are reduced. This leads to a higher torque, lower rotor losses, better power factor and better efficiency without increasing the active machine volume.