I've been working on the design of a stator and have been trying to redesign what I have to make it smaller, simpler and cheaper to build. But the design I want to go to doesn't seem to be as effective as the original. The original uses (2) 1/2" steel bars bent into a U almost like a triangle with a corner cut off, welded across each other with (4) coils. The one I want to go to uses (4) pieces of the same 1/2" bar welded to a 3/16 steel plate with the same (4) coils. I'm trying to understand the reason for the difference in magnetic strength. I've speculated that the 3/16 steel plate is not thick enough? The coils are butt up against each other and working against each other? The bars need to be angled more directly at the rotor so the flux engages it better? I get some loss due to the right angles the flux makes from bar to steel plate?
I've attached a drawing. Any help would be greatly appreciated.
I've attached a drawing. Any help would be greatly appreciated.