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Overunity Machines Forum



Can someone confirm this in FEMM?

Started by broli, July 18, 2009, 07:46:51 PM

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robbie47

#10
July 19, 2009, 10:44:13 AM
Quote from: broli on July 19, 2009, 10:30:22 AM
robbie47get your simulation straight!

We may have a misunderstanding. The graph I showed is the graph of the force in x-direction (force to the left is negative, force to the right is positive).
All 3 magnets are present doing the force integrals.

What are the units of your graph? Field strenghts?

broli

#11
July 19, 2009, 10:54:11 AM
Quote from: robbie47 on July 19, 2009, 10:44:13 AM
We may have a misunderstanding. The graph I showed is the graph of the force in x-direction (force to the left is negative, force to the right is positive).
All 3 magnets are present doing the force integrals.

What are the units of your graph? Field strenghts?

Yes the graph represents the x component of the field along the x-axis. You should simulate the same. Can you show the setup of your simulation please.

broli

#12
July 19, 2009, 11:14:38 AM
I adjusted the graph to represent force so that it would be less confusing. Positive force indicates force in direction of movement negative force would be in opposite direction. When the magnet hits the maxima position this force instantly goes from positive to negative as the graph shows.

petersone

#13
July 19, 2009, 11:18:10 AM
Hi Brolli
I can't do a simulation of your set up, but have tried a real test and it seems to show some advantage,going to do some more work on it,I can tell you the test I done if you want.
peter

robbie47

#14
July 19, 2009, 11:22:50 AM
Quote from: broli on July 19, 2009, 10:54:11 AM

Yes the graph represents the x component of the field along the x-axis. You should simulate the same. Can you show the setup of your simulation please.

Here are the Bx results of my simulations. Geographical setup is identical of yours. Red parts act as North poles, blue ones as south poles I asume.
How do you calculate your COP? Integrate Bx over distance?
I have done my COP calculation by integrating X-force over distance.
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