Alternative winding wire for induction motor efficiency improvement

Abstract

Of all the electrical energy generated in the world, electric motors are responsible
of about 40% of the total consumption and the induction motor is the most popular machine. Focusing on efficiency remains essential to contribute to the energy
waste solving. It denotes the utilization of the major amount of electricity and the
reduction of the losses in the energy conversion process happening in the induction
motor. This losses reduction means savings in both, energy and money, having also
a strong environmental impact with the reduction of CO2 emissions.
This thesis presents a work developed to attempt the stator copper losses reduction in an induction motor. To achieve this, a thermal experiment was designed,
where three different insulation arrangements were tested to obtain a temperature
rise comparison and with this, obtain and analyse the resistance in function of
the temperature. Results demonstrate that the resistance decrease could not be
achieved, nevertheless, the experiment and analysis provide a background for further
work to be done in order to reduce the stator copper losses with the implementation
of a different insulation materials.