FDM - flux displacer motor by Igor Knitel (Perihelion Labs)

[wizkycho]

... try it. For You it might work
wiz

[broli]

... try it. For You it might work
wiz

Upon further thought I realized even the non uniform surface wouldn't help so why try to circumvent the very feature that would make this a good generator (no torque). I would just stick to the generator side of things.

[wizkycho]

@broli
i will try some suggestions upon completion of setup especially to use solid cores stator just for proof of the concept.
- directly making it generator would not work cause of Lentz counter fields that are generated and would
negatively influence primary rotor. (at this stage I do not see how it can be done)

Input rotor magnets on FDM version 1 are not drawn correctly. and such positioned magnets only reroutes half of the field of the ring magnet
(although even build as drawn device is over 100% efficiency)
but if magnets are placed correctly (like simulated in FEM analysis) and afterwards drawn in FDM version 2 whole field of the 1/8 segment
is rerouted and therfore create huge difference of magnetic field strenght in respect to position
of permeable segment of output rotor and that certanly creates torque.

hope I get evenly magnetized ring magnet and that is allso reqirement for device to work properly.

wiz

[DreamThinkBuild]

Hi Broli,

Thanks for looking at it with the sim.

[broli]

This reminds me of a potential steel core that can be used for the rings. It's called strapping steel, comes in rolls, is usually paint coated to prevent corrosion and pretty cheap, these features are very handy for a ring core. Sure it's not as good as silicon steel but it doesn't have to be, as long as it traps the flux and keeps eddy currents at a minimum it should be fine. It's the coil cores that have to be more efficient.

Edit: Or another potentially interesting source: http://www.ukmag.net/magnets/magnet_105.aspx