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Overunity Machines Forum



Magnetic shield by use of a second magnet - A better way I think.

Started by Low-Q, July 01, 2009, 12:14:52 PM

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onthecuttingedge2005

#15
July 03, 2009, 08:01:38 PM
I was thinking more along the lines of a stator magnet using the shielded shorter Halbach array version.

Jerry

Low-Q

#16
July 06, 2009, 04:39:05 PM
I see. It seems that the magnetic field we want to use will weaken if we shield it. A shield cannot destroy magnetism, so the magnetic flux is instead very densed with steep turns in order to close the magnetic loop, so less magnetism is "spread out" so we can use it...I'm not sure if I understood what I wrote right there ;D

I will, when I get time, make a drawing on how to set up the magnets, more like @broli suggested - let the magnets as little as possible affect the slide process. I think I have a good idea how to make it.

But thanks anyway for your drawing :). I think I understood the intention, but I still think you will have two poles, or else the magnetic field would have to collapse into no field at all.

I'll try to stick to my doubble-zip (|||||><|||||) lookalike magnetmotor...for now....

Vidar

lumen

#17
July 09, 2009, 11:10:27 PM
@Vidar, If you get some extra time, try FEMM to see if the results indicate the same as indicated in the pic.

You could also flip magnets A over to test the same setup using your concept. It seems the setup works better when the hidden magnets are short and don't cross the center of the large magnet.

Low-Q

#18
July 12, 2009, 04:42:51 AM
I can do a simulation, but first i have some comments:

In the second picture, magnets A is moving left. These magnets will face a number of counterforces. The leftmost magnet A does not want to move away from magnet B, and it does not want to move away from magnet C - because N pole of the leftmost A is attracting the S pole of C as well. The rightmost magnet A does want to go to the center of magnet B, but it does not want to approach the equal N pole of C.

Magnet C is the joker here. It will in any case be the break and balance the system.

It is easier to take away magnet B, and then figure out how the magnets will behave. Magnet B does not change anything in how magnets A and C are affecting on eachother. Magnet B is just providing the extra forces that is affecting A and C, and just confuse us to think too complex, so we forget the obtacles.

It's easier to determine the forces if you take one element at the time.

Vidar
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