Squirrel Cage Induction Motor: A Design-Based Comparison Between Aluminium and Copper Cages

In many industrial applications the self-starting capability of electric motors is still an important requirement enabling to simplify drive architecture and increase system's reliability. The efficiency improvement this motor topology has been targeted by various national international regulatory authorities with ad-hoc policies. Indeed, a lower energy consumption leads twofold benefits reducing operational costs $CO_{2}$ emissions. adoption copper cage successfully proven reduce losses. However, could affect other performance indexes, such as starting torque. paper, advantages drawbacks adopting are analysed in depth comparing at different operating conditions, respect more common aluminium cage. Starting from set induction machines optimized cage, effect direct material substitution both terms electromagnetic thermal aspects. overall also compared against specifically With presented comparison exercise, general design guidelines outlined aimed improving without deteriorating metrics.