170 watts in - 1600 watts out - looped - Very impressive build and video

[pmgr]

L192, can you make a flattened out drawing/sketch of the 36 slots and show how the windings go.  Are you saying each coil still only occupies one slot, just that the return of that coil is shifted by 6-8 and goes over the backside of the slot?


PmgR

[gotoluc]

Yeap!
4 poles motor, 1:8 pitch, 2 layers, series lap. Double 30 turns windings of 20 gauge wire ( I do have another tests to do ), 7 hp motor stator.
My last one that i had done was 35 years ago....
Also, I din't have the proper nomex paper, so the stator will not be a class "F" insulation. Lol

WOW!!!  you are the most dedicated builder I have ever seen in the 10+ years I've been here. I wish you all the best as that's a lot more work to do.
I wouldn't be prepared to do so much without having more information.
Please keep us up to date and let me know if you have any questions for Pierre.
So far Konehead is the only one that has asked which I'm finding hard to believe.

Regards

Luc

[ariovaldo]

WOW!!!  you are the most dedicated builder I have ever seen in the 10+ years I've been here. I wish you all the best as that's a lot more work to do.
I wouldn't be prepared to do so much without having more information.
Please keep us up to date and let me know if you have any questions for Pierre.
So far Konehead is the only one that has asked which I'm finding hard to believe.

Regards

Luc

Thanks.
I want to do some tests using a puse dc, rotating as a normal motor. I had used a VFD in a normal motor stator and I noticed some weirds effects when I crossed some wires with a dc load from a battery inside the stator...
I'm just trying to understand that.
Ariovaldo

[listener191]

Hi PmgR,

I believe ariovaldo has the correct scheme in the post of his 36 slot stator.

He is using a 8 slot pitch for his coils. 

Now as Pierre is using 6 phases spaced at 60 degrees, an 8 slot pitch would cause the phases to overlap which would reduce overall voltage swing, so I believe Pierre is using a 6 slot coil pitch.

If you decrease the coil pitch too much, then inductance will be reduced and hence flux level and voltage swing. 


Regards

L192

[RoliK]

Very well done ariovaldo!!
I think no one else is asking, because everybody knows how busy pierre must be, now.  Although he wrote in a comment that he will make a video with all details
.After that I hope we are able to make a replication.

RoliK