Simple generator

[broli]

I think that would be the case that makes most sense, that is to the transformer being conductive around its outside surfaces. However I'm still concerned about eddy currents as even being one laminate deep they can have a significant effect on the rotating magnets. However as Luc said, it's best to move on with these cores before considering another material/design.

Today I finished designing the rim that will hold these cores, I'm not fully sure on the specs of the 3d printer but if I'm lucky I can print it out in one piece.

[gyulasun]

Hi Broli, 

Seems to me a good design!

[gotoluc]

Wow broli!... excellent design

Looking forward to see this one

Luc

[gotoluc]

I think Luc was curious to know the normal Lenz effect in such generator design :  when you load the output coils then how the load current may affect the prime mover of the rotor.

Gyula

Exactly... looking forward in seeing that result

Luc

[broli]

I would like to say that one of the Chinese suppliers gave me a quotation price today of 1318$ for the custom round stator core. This is a bit more reasonable than the 3500$ price from the other supplier. But in both cases the actual core is not that expensive, it's the stamping mold that jacks up the price, for instance the core alone costs 98$ while the mold is 1220$. So it's reasonable if you're looking into mass production but for prototyping it's a bit pricey. For now I'll leave the quote open untill I finish atleast one prototype based on the transformers.