|
@all
Regarding the biasing magnets, when a rotor magnet or any other magnet passes a coil, the output of the coil will be defined by the extreme change in the magnetic field environment around the coil going from no field, to full field, to no field. Now when you are biasing the coil, it seems to me that the coil output will be reduced because the coil no longer can see the greatest extreme change in field because there is always a field present, say partial field, full field, partial field, then the rotor magnet has to overcome that partial field for the coil to see the difference in the two and output what it does.
Also, with 8 neo magnets per rotor, we know that even when the magnets are positioned so the center point between two rotor magnets is at TDC to a coil, meaning the rotor magnets are the farthest away possible from the coil, their fields are still present near the coil given they are of neo type so very strong fields. This means a condition of no field, full field and no field is not possible to begin with. This you can see since there will be no horizontal in the output waveform.
Knowing that a coil wants to see the ideal magnetic field change from zero field to full field, and given that biasing the coil will reduce that extreme as well as given the distances of the rotor magnets from one to the other, I am thinking that maybe the best rotor magnet number would be 6 or 7 magnets and not 8. Eight would be fine if the rotor diameter was increased since the magnets would be spread out further and the field extremes would be more emphasized.
The other option I am thinking is to use 8 magnets with the diameter of the rotor as it is now but have each magnet fixed inside a metal ring that is 1/4" higher and that surrounds the magnet then both placed as one into the rotor wheel magnet holes. If the metal rings could muffle the magnets outgoing edge field you would have a better zero field between the rotor magnets and the coil would see a greater change in the field and produce more output and the drag period would be shorter. Also the top hall sensor would be more precise in its activation period permitting less activation slippage.
So the use of the biasing magnets will have a give and take effect. It may give some freer passage to the rotor magnet, but it will take away some output production from the coil. I am then thinking that if the biasing magnets do provide some beneficial action to the rotor rotation but also hindering output production, then maybe they should be positioned not over the gen coils but between the gen coils.
wattsup
---------------------------
|
Author
Topic: RomeroUK Replication Muller Variant Device (Read 140192 times)
