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Author Topic: Magnetic flux control idea  (Read 5806 times)

Offline Belfior

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Re: Magnetic flux control idea
« Reply #60 on: December 27, 2018, 01:28:14 PM »
I am still so jealous of your 3D printer, that  cannot even watch the whole video :(

I will attach a picture of my PM motor, that was not made with a 3D printer (and for that reason is not quite ready yet :( )

Free Energy | searching for free energy and discussing free energy

Re: Magnetic flux control idea
« Reply #60 on: December 27, 2018, 01:28:14 PM »

Offline Belfior

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Re: Magnetic flux control idea
« Reply #61 on: December 27, 2018, 01:41:32 PM »
The only way I could see the device working, is that the PM magnets get pulled towards the magnet below them. When they approach the bottom magnet, they also get closer to each other. You can probably get them ALL not to repel, but not really care about each other. I think you might call it like a halbach array when they all meet at the bottom. No magnetic field to notice and magnets at the top are being pulled or pushed.

So magnets get pulled down towards the bottom magnet. On the other side of the wheel they are pushed up. When they meet at the bottom, the field is made smaller than the pushing field by arranging the magnets. This would supply the rotation.

My own version relies on acceleration. My wheel accelerates the whole rotation and at the cogging point this angular momentum should carry it over the cogging magnet and to a new rotation. I might need to add an electromagnet so help also at the cogging point or on the other side of the rotor. The third aide is a coil system on the rotor middle. Moving coil (on rotor that moves) inside a changing magnetic field should induce a current into that coil. Now you got Lorentz force in play. You can arrange the setup so, that you get positive Lorentz force that helps with the rotor rotation.

So I hope angular momentum, electromagnet and Lorentz will help with the cogging. Maybe there are more forces I could cram in there.

Offline Low-Q

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Re: Magnetic flux control idea
« Reply #62 on: December 27, 2018, 03:49:01 PM »
The only way I could see the device working, is that the PM magnets get pulled towards the magnet below them. When they approach the bottom magnet, they also get closer to each other. You can probably get them ALL not to repel, but not really care about each other. I think you might call it like a halbach array when they all meet at the bottom. No magnetic field to notice and magnets at the top are being pulled or pushed.

So magnets get pulled down towards the bottom magnet. On the other side of the wheel they are pushed up. When they meet at the bottom, the field is made smaller than the pushing field by arranging the magnets. This would supply the rotation.

My own version relies on acceleration. My wheel accelerates the whole rotation and at the cogging point this angular momentum should carry it over the cogging magnet and to a new rotation. I might need to add an electromagnet so help also at the cogging point or on the other side of the rotor. The third aide is a coil system on the rotor middle. Moving coil (on rotor that moves) inside a changing magnetic field should induce a current into that coil. Now you got Lorentz force in play. You can arrange the setup so, that you get positive Lorentz force that helps with the rotor rotation.

So I hope angular momentum, electromagnet and Lorentz will help with the cogging. Maybe there are more forces I could cram in there.
I don't quite understand how the rotor magnets is getting closer to eachother at the bottom. If they do, I assume the rotational speed isn't constant. So the rotating magnets creates a "traffic jam" at the bottom (?)
I do not use rotating magnets btw., just ferromagnetic rods. Maybe you explained your own project?
I have been thinking of using rotating magnets, but I feel that I have spent enough time and ideas on that, and came to the conclusion that rotating magnets doesn't work. However, it doesn't hurt to try more.
Cogging should not be a problem. Even if it is cogging, this is a response to sticky or repelling spots along the revolutions. Usually, this cogging is due to forces that is equal and opposite in front and behind the very spot where the cogging is at its peak. So the cogging itself should not drain or add energy into the system. For a smoother rotation, it will help with an electromagnet, but then you supply energy into the system due to electrical loss in the electromagnet.


Vidar

Free Energy | searching for free energy and discussing free energy

Re: Magnetic flux control idea
« Reply #62 on: December 27, 2018, 03:49:01 PM »
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