The global site of the UK's leading magazine for automation, motion engineering and power transmission
25 May, 2024

Twitter link

Nidec develops ‘first magnet-free motor with SiC inverter’

22 December, 2014

The Japanese motor-maker Nidec claims to have developed the first motor-drive system in which a magnet-free switched reluctance (SR) motor is powered by an inverter incorporating silicon carbide (SiC) semiconductor devices.

It says that the 44kW liquid-cooled prototype occupies less than a third (32%) of the volume of a conventional motor and inverter of a similar rating, and weighs 31% less.

Nidec believes that the development could lead to future drive systems that are compact, lightweight and have a low power consumption. Compared to conventional silicon semiconductors, SiC devices exhibit lower power losses, improved heat resistance and higher current capacities.

Nidec's prototype 44kW SR-SiC motor-drive

During 2015, Nidec is planning to develop an integrated motor-drive system with the inverter inside the motor housing.

  • To view a digital copy of the latest issue of Drives & Controls, click here.

    To visit the digital library of past issues, click here

    To subscribe to the magazine, click here



"Do you think that robots create or destroy jobs?"



Most Read Articles