ABSTRACT
Induction machines are related to mechanical into electrical energy conversion via magnetic energy storage in an ensemble of coupled electric and magnetic circuits. The larger part of electrical energy is converted into mechanical energy in electric motors. Amongst electric motors, induction motors are most used both for home appliances and in various industries. Intelligent use of energy means higher productivity with lower active energy and lower losses at moderate costs. Reducing losses leads to lower environmental impact where the motor works and lower thermal and chemical impacts at an electric power plant that produces the required electrical energy. The three-phase A.C. power grid capable of delivering energy at a distance to induction motors and other consumers has been put forward by Dolivo-Dobrovolsky around 1880. Standard induction motors have been introduced to promote further energy savings both at constant and variable speeds.
