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Hitachi Electric motors without rare earths

15-04-2012 10:43am

#1

Capt'n Midnight

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http://www.theregister.co.uk/2012/04/13/rare_earth_hitachi_motor/

Japanese electronics giant Hitachi has unveiled what it claims to be a highly efficient mid-sized electric motor built without using the rare earth minerals which have become essential to the production of much of modern technology.

The 11kw motor is designed to power pumps or fans in factories and tunnels and should be ready for commercial production by 2014, said Hitachi.

The key design challenge the firm had to overcome was to build a magnet synchronous motor with the requisite energy efficiency and performance without using the rare earth minerals neodymium and dysprosium.

Hitachi said it achieved this thanks to developing its own “iron-based amorphous metal core”, which it has been working on since 2008.

The main drivers for the project were improving energy efficiency to counter global warming and move away from a reliance on rare earth materials which China has a virtual monopoly on.

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