Prototype Motor Replaces Copper with Carbon Nanotube Yarn

Bryan Kilgore for Zondits, October 27, 2014

A prototype motor being developed by Lappeenranta University of Technology uses carbon nanotube windings instead of copper. Carbon nanotubes offer increased conductivity over copper, delivering better efficiency and a reduction in weight. Since electric motors are prevalent in all sectors, it’s quite desirable to use winding materials that exceed the performance of current materials.


Lappeenranta University of Technology Develops Electrical Motor Using Carbon Nanotube Yarn, October 15, 2014

Lappeenranta University of Technology (LUT) introduces the first electrical motor applying carbon nanotube yarn. The material replaces copper wires in windings. The motor is a step towards lightweight, efficient electric drives. Its output power is 40 W and rotation speed 15000 rpm.

Aiming at upgrading the performance and energy efficiency of electrical machines, higher-conductivity wires are searched for windings. Here, the new technology may revolutionize the industry. The best carbon nanotubes (CNTs) demonstrate conductivities far beyond the best metals; CNT windings may have double the conductivity of copper windings.

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