Possibilities for Reduction of Variable Losses in Induction Motors

This paper analyses ways of increasing the energy efficiency of induction motors that are related to reducing electrical losses in the stator winding, electrical losses in the rotor winding and additional losses. Techniques employed for reducing the rotor winding resistance with the purpose of reducing the electrical losses are presented. A study of the existing methods for calculating the additional losses in induction motors is conducted and solutions for the reduction of such losses are proposed.