Increasing the energy-efficiency of induction machines by the use of grain oriented magnetic materials and die-casting copper squirrel cage in the rotor

This paper deals with the results of an experimental induction machine with a new magnetic structure applied on die casting copper rotor, which is based on a non segmented lamination with grain oriented electrical steel sheets in order to reduce core losses and increase the interbar resistance thanks to the glass film. The same stator is used in order to change only the rotors.