Sotogen

[l0stf0x]

You are welcome Luc
sorry for the poor drawings, I don't have it with 3d software.

The difficulty is at the construction of the core. Actually the center shaft at the drawing show as 1 peace. Its wrong, it should not pass all the way from inside of the core. And better to be magnetically insulated material like aluminum bars on bearings with special endings to screw them on the rotating core...

The laminations can be pre-cutted to sizes so when you join them altogether, at the center of it will be circular and perfectly symmetrical as it can be. The 4 core branches are angled on purpose, to be away from copper, and for better magnetic flux distribution.

[gotoluc]

Thanks for this extra very important information.

I'm thinking of a simple material to use for proof of concept.

Luc

[l0stf0x]

Thanks for this extra very important information.

I'm thinking of a simple material to use for proof of concept.

Luc

Maybe ferrite will be better if you have them.

solid soft steel is not suitable for ac swithing, but for just to proof the concept its ok I guess

I will use laminations because I have them already here (from large transformers), and I also have some huge neodymium magnets that I want to use, so I need a big core.

[l0stf0x]

I forgot to say that the angled branches must be as short as possible..