Permanent magnet assisted motor coil designs

[captainpecan]

This time I have chosen to use the same coil design. 2600 turns of 30awg wire. I have found that this gives a good magnetic field flip for low current. I have found that 4 coils in series really keeps the current low, but I have to use a much higher voltage to run. This makes it very efficient, but I'm shooting for a little less voltage, a little more current available, and shorter pulses to make this easier to make the move to all batteries soon. I want to have a pretty good rpm but don't really want to run over 30 volts at least for this build. Efficiency has shown higher voltages have performed more efficient. But I'm shooting for a good mix here.
I have chosen to go with 2, 8 magnet rotors, above and below coils. Top will be all North facing down, and bottom all south facing up. The coil will be aligned opposite. I have measured the force acting upon the rotor in attraction mode for my magnets. I have found that between 11 and 10 degrees before TDC gives the strongest pull to the rotor per pulse. I have chosen to build using 6 coils. The combination of 8 magnets and 6 coils will give me 24 pulses into 2 coils in series, for each single rotation. This should give me 5200 turns of copper for every pulse. I do not forsee it being close enough to self start yet. So I will still need to nudge the rotor to start it. But I believe I can adjust the pulse pretty sharp to cut down on current flow and with 24 pulses per rotation, I should get a higher percent of the initial energy back as flyback. The shorter the pulse, the better here. Having 24 per rotation will hopefully give me good rpm anyway at very low wattage. We shall see. I think my biggest struggle is finding the best way to mount the coils that will allow a small gap but be strong enough to not move. There will be quite a bit of force from the rotor magnets acting on them. Just keeping things updated. I'm moving forward.

[floodrod]

THE QUICK AND EASY WAY TO AVOID ALL THE LENZ NEGATIVE EFFECT.
IS TO MAKE THE STATOR AND THE ROTOR THE SAME. AS THE TWO REACH TOP
DEAD CENTER BOTH ARE TRIGGERED. AND VOILA.

Can you explain this process more thoroughly for me?

are you saying using all the coils as both generator and drivers.  Pulse all the coils with each magnet pass just past dead center.  And collect all other times including top dead center?

Is this what you are saying?  If not, I would like to hear more about this idea.

thanks

[captainpecan]

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[captainpecan]

I think what he means is to have coils on the rotor also. Pulsing coils against coils and not having any permanent magnets by themselves. Would be a nice very powerful layout but difficult to do. I think what he means is because the flux hides back inside the core when not pulsed, they pass right by each other with no Lenz drag. Kind of like a normal induction motor that does not use permanent magnets, except this one does use them but only when they do the most good and then they hide again. If I'm reading his stuff correctly. I would actually like to try it but I'm just not sire to do the slip rings and spinning the coils with good connection. It's a very good thought with these coils. And automatically does what I am trying to do by leaving open coil except for the pulse and flyback collection.

[floodrod]

I think what he means is to have coils on the rotor also. Pulsing coils against coils and not having any permanent magnets by themselves. Would be a nice very powerful layout but difficult to do. I think what he means is because the flux hides back inside the core when not pulsed, they pass right by each other with no Lenz drag. Kind of like a normal induction motor that does not use permanent magnets, except this one does use them but only when they do the most good and then they hide again. If I'm reading his stuff correctly. I would actually like to try it but I'm just not sire to do the slip rings and spinning the coils with good connection. It's a very good thought with these coils. And automatically does what I am trying to do by leaving open coil except for the pulse and flyback collection.

OK, yeah I was thinking that route also when I read it.  Thanks for the clarification..

I made slip rings / commutators for 3 of my past motors, and they all worked. some better than others.  They aren't too bad to make when all magnets are same polarity. But when your flipping polarity, you need a minimum of 4 contacts.  But I ended up using 5 contacts because making the commutator is much easier with that extra contact.  If I am ever satisfied with a design, I will definitely outfit it with a commutator for the final product.  Can deliver AMPS to the input without the fear of adding another wounded soldier to my chinese quart container of fried H-bridges.  Lol..

Anyway- keep building man...  I await the knowledge you will share..