Axial Induction motor with no magnets.

Electric Motors and Controllers
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GordonFreeman
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Joined: Dec 13, 2017 4:09 am

Axial Induction motor with no magnets.

Post by GordonFreeman » Dec 14, 2017 8:37 pm

Is there such a thing? I'm thinking the stator design would be like the coreless pancake motors I've seen on here. And the "cage" rotor would be sort of a "spoked" shape. An inner ring, an outer ring, with the copper conductor "spokes" connecting them. Would that be the right orientation to work? Asynchronous is a goal.

Upsides, downsides?

Also do induction motors need laminations on both stator and rotor? I see coreless designs on here, so what do lamenations really do?

GordonFreeman
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1 µW
Posts: 3
Joined: Dec 13, 2017 4:09 am

Re: Axial Induction motor with no magnets.

Post by GordonFreeman » Dec 15, 2017 5:18 pm

Nothin"? Maybe my paint skills will get some comments.
axial_induction.png
axial_induction.png (16.58 KiB) Viewed 198 times

major
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Location: NW Ohio, USA

Re: Axial Induction motor with no magnets.

Post by major » Dec 15, 2017 9:57 pm

Axial air gap induction motors (and generators) have been around for a while although not too common. Here's a discussion: http://forums.aeva.asn.au/viewtopic.php?t=1966 Google brings up many other examples.

And ferromagnetic cores are used because the material has a magnetic permeability of thousands times greater than air.

Regards,

major

GordonFreeman
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Joined: Dec 13, 2017 4:09 am

Re: Axial Induction motor with no magnets.

Post by GordonFreeman » Dec 16, 2017 1:31 am

Ah, thanks. So it works and a wheel motor is indeed the application.

There must be some reasons it's not popular, since it's not a new idea.

I ask about coreless as this would be a DIY project. I assume coreless would make less torque?

Thanks for the input.

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