Power Losses in Induction Machines

Losses in induction machines have been subjected to a detailed study by many investigators, but due to the complex nature of some of these losses, particularly several forms of load loss in induction motors, a clear understanding of their nature, has not been available. Since the majority of such losses are connected with the magnetic flux in the machine, a study of the distribution of magnetic flux in the stator and rotor is necessary; such a study is presented herewith. The flux losses considered are divided into 2 groups, those occurring at the fundamental frequency, and those occurring at tooth frequency.