Permanent magnet assisted motor coil designs

[captainpecan]

Here is a little test run just to show it working. It needs tuned and is using just under 2 watts in this demo. So I think I can get the power input way down as I tweak it. Not to mention, this is only 2 coils. This did solve my big issue with lenz law kicking my butt. Now when I collect the flyback i get a small increase in rpm instead of it bogging it all down. Much more to come...


https://youtu.be/hPeKd-UupTc

[Floor]

Thank you captainpecan.

I guess you know, thats what were looking for. Very cool and good luck with
your testing.


    floor

[captainpecan]

Thank you captainpecan.

I guess you know, thats what were looking for. Very cool and good luck with
your testing.


    floor

@Floor,
Thank you! It's some very interesting stuff for sure.

More mental ramblings...
Just another thing for me to keep in mind. There is magnetic flux being projected outward from the top and bottom run coil that is currently only being used to attract a torque plate. I need to position generator coils on the opposite side of each and collect that energy from the system. Air core would not effect the flux direction but may not capture as much as it could. I would probably need a metallic core in order to collect a high enough voltage to store. Question is how that will direct the flux between the drive coil and generator coil. It should direct much more in a straight path between the two instead of reaching out a bit to grab a torque plate. I may need to move the outside torque plates a little closer to the run coil cores for the run pulse timing in order to continue getting good attraction when generator coils are in place. Just a little rambling while I get some thoughts out of my head and down in writing.

[captainpecan]

Another interesting idea I had I just wanted to get written down. I checked to see the distance that my half inch wide torque plate bars get attracted to the side of my 1/2" magnets. Turns out, at just under 1/2" distance it begins pulling them together. Therefore, if I put both next to each other on a rotor, as long as there is 1/2" gap between them, there will not be any significant change in the magnets field..  this led me to this concept that may work well with my hidden magnet coils. Seems someone would have tried this before but I haven't seen it.
Problem I had using magnets on the rotor was that for my setup, just simply collecting the flyback spike had a strong Lenz drag effect. More than in a usual setup. This led me to an attraction design because I need to collect that flyback to protect my mosfets and of course efficiency. It seems I have an interesting idea to combine the attraction design with the magnets on the rotor at the same time...


Step 1, the rotor has both magnets and iron plates, arranged for best use as shown below.

Step 2, the magnet on the rotor is attracted to the coil core on the way in because the magnet in the coil is effectly off.

Step 3, when the magnet passes the core, the coil will be pulsed projecting an opposing field forcing the rotor forward. The gap between the magnet and coil will direct more flux backwards towards the iron on the rotor. This will pull and attract the rotor forward at the same time. Effectively getting 2 forward forces for 1 pulse.

Step 4, the coil is turned off and the field collapses. Lenz law states that the rotor magnet will be dragged down a bit as this happens. At the same time, the iron will still be attracted forward and it will be closer to the core at that moment. This should hopefully help negate the Lenz drag enough to make a noticeable difference and allow the collection of the flyback without dragging the motor down as much.

This seems to simple. So it's been tried before I am sure, but seems worth a look for my coil design due to the strong Lenz law effect present when permanent magnets are used on the rotor. Hopefully the combination of step 2 above giving 2 forward forces for 1 pulse, and the extra attraction forward in step 4 as Lenz drags the magnet down a bit, will give a net gain overall and get a bit more torque and rpm for the same or less energy input.

[captainpecan]

I won't have time to work on my project for a few days. I am trying to wrap my mind around my idea I just posted about the new rotor. If both the magnet and the iron were on the rotor, would I get both gains from the magnet repulsion and metal attraction? Or would I only get the greater of the two? I'm trying to think the physics through. I'm just not sure of the attraction of the metal is less than the repulsion of the magnet, would it have a positive attraction at all from the metal? I am thinking it still would. Considering that an attraction motor running at 1000 rpm would still have an attraction force even if the rotor was moving really fast. Just thinking about things while I am unable to build and find out by doing.