[The Limiting Factor] Tesla's Rare Earth Free Motor // Niron Iron Nitride or Ferrite Magnets?

[firsttruck]

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Tesla's Rare Earth Free Motor // Niron Iron Nitride or Ferrite Magnets?
At Investor Day, Tesla teased a rare earth free motor.
This has led to speculation about Tesla partnering with Niron for their Iron Nitride material.
However, I think think humble ferrite magnets may actually be a better option.
May 10, 2023
The Limiting Factor

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[Diehard]

This mercedes motor could be interesting. 1/3 of conventional motors. RPM is not as high.

 

[Crissa]

Yeah, this is one of the few actually new developments in motor design in the last hundred years.

Most of the new motors aren't because we designed a new motor so much as we learned how to build motors better: They've been the same windings and magnets in different methods of putting them in place.

The basic 'rules' of motors were sussed out in the 19th century about how to make electromagnetic fields and spin them. The math hadn't moved, just we weren't able to make much of the theoretical designs, because of materials and manufacturing limits.

-Crissa