Guru
Joined: 26/09/2020
Location: AustraliaPosts: 657
| Posted: 08:30pm 06 Dec 2025 |
Hi Bryan, so from the beginning of the story, you are using the motor as a generator for a wind generator?
The current (460 amps) should be possible with slip rings, but i am wondering why you didn't wind the stator for a higher voltage and use a transformer at the battery end to drop the voltage back down?
If I were looking for a large set of slip rings, then i would go to a scrap metal yard and look for an old three phase slip ring motor.
That way you would get the slip rings as well as the brush gear you need.
I am also wondering how you calculated that you need 460 amps for the slip rings.
That is a very high current to be trying to draw from a small motor like a 4kw three phase motor. I would think the motor would get too hot if you tried to pull that much current from it.
Good luck with the project
Pete