Assessment of conductor materials for induction motors: current state and future trends

Abstract

Induction motors (IM) are among the most important motors in industrial and civilian applications, especially in drive systems. One of the key factors determining the performance and durability of motors is the materials used for conductor bars, particularly those used in the rotor. The selection and improvement of conductor materials not only affect electrical conductivity but also influence energy loss reduction, performance optimization, and the motor's longevity. This paper evaluates traditional conductive materials such as copper and aluminum, while also exploring advanced alternative materials, including aluminum alloys, copper alloys, and carbon nanotube (CNT) materials. The goal is to provide valuable insights into the development trends of new conductive materials in research and applications, meeting the growing demands for motor performance and reliability in modern industries.