Printed Polarity Magnets: Single piece magnetic rotors?

Logic11

100 mW
Joined
May 2, 2022
Messages
42
Hi guys.
Lurking and learning here. :)
This is all pie in the sky theoretical stuff, but maybe in the furure...

Printed Polarity Magnets:
[youtube]drD416THU7Y[/youtube]

Where the rotor holds the magnets and they tend to fly off at high rpm, this tech would be a godsend.

With std hub motors one may get a lighter motor with better heat dissipation, especially when using Statorade.
Also a smaller gap between rotor and stator would be easier.

Gearboxes and geared hub motors:
Imagine a std geared hub motor where all the gear teeth are magnetized North and repel each other.
What would happen to friction/efficiency, noise, heat..?
Same goes for any gearbox out there...
 
most of the most recent rotors use "interior permanent magnet" configuration. IPM.

The magnets are slid into openings in the lamination stack. It may sound odd, but it wasn't due to magnets flying off at high RPM.

Doing this moves the magnets slightly farther away from the magnetic airgap.

The permanent magnets magnetise the thin layer of laminations between the magnets and the airgap in order to accomplish the work, but it also places the magnets themselves farther away from the eddy cirrents that could get the magnets hot.

Doing this raises the amount of temporary peak amps a motor can survive without damage.
 
spinningmagnets said:
most of the most recent rotors use "interior permanent magnet" configuration. IPM.

The magnets are slid into openings in the lamination stack. It may sound odd, but it wasn't due to magnets flying off at high RPM.

Doing this moves the magnets slightly farther away from the magnetic airgap.

The permanent magnets magnetise the thin layer of laminations between the magnets and the airgap in order to accomplish the work, but it also places the magnets themselves farther away from the eddy cirrents that could get the magnets hot.

Doing this raises the amount of temporary peak amps a motor can survive without damage.

Thx spinningmagnets. I like your site btw. :)
 
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