My goal is to contactlessly power a small generator by rotating a steel plate underneath it.
Specifically, I have mounted 6 permanent magnets (rectangular shaped) on a shaft, which is mounted on ball bearings that make it spin freely (rotor.) All around it are the armature windings.
Now I know that it is possible to make the magnets spin with a conductive metal plate rotating underneath it (the plate is spinning freely at very small distance from the magnets) because of the generated eddy currents. This would work fine with an aluminum plate as I have already tested it.
In my case the spinning plate has to be steel and the main problem is that the magnets on the shaft won't turn because of the magnetic attraction of every single magnet with the steel plate. I tried different rotating speeds and distances between the shaft and the plate but nothing helps. Even with rounded shaped magnets it seems to make no difference
Do you have any suggestions how and if this could work? Maybe some sort of coating for the steel plate?