Clemente Figuera Flux Cutting Study

[Cadman]

For a long time it has been my belief that the attempted Figuera builds fail because actual flux cutting by a constant moving magnetic field has not been achieved. This is the first part of a study I’m doing on how to obtain flux cutting without a physically rotating structure. 

This is a study, not a build yet.

The top coils are wound to oppose the bottom coil polarity. Constant field amperage in the bottom inducing coil, this is what I’m calling the the anchoring flux, the flux that cuts the wires. The top coils are steering coils, and also at times, induced coils. I find that dual interaction interesting. Matching field strength in top coils when activated. The thin coil in the gap is like a coil in a modern generator, one side under one pole and the other side in an opposite pole. The top coils are activated in sequence with one on and the other off.

   
All coils 225 turns.

This is for 1 inducing coil.
Pay attention to the direction of the arrows in the top coils and through the gap.

At Start up the inducing coil is powered on:
Induction in top coils, not flux cutting, and no induction in gap coil.
   
Inputs: Bottom: 4A Top left: 0A Top right: 0A

Running Sequence:
Induction in top right coil, not flux cutting, and gap coil, flux cutting.
   
Inputs: Bottom: 4A Top left: 4A Top right: 0A.

Induction in top left coil, not flux cutting, and gap coil, flux cutting.
   
Inputs: Bottom: 4A Top left: 0A Top right: 4A. 

The next study will be an attempt to turn this into 4 inducing pole generator.

Cheers
Cadman

[truesearch]

Cadman,

That approach sounds interesting! and promising too.

[Cadman]

This will be a build to see if the flux cutting idea is valid.

I did a running simulation with coils going through a normal L/R inductance time constant and it looks pretty good. Unfortunately the 3MB .mp4 video of it is not allowed to be posted.

CONFIGURATION

Steel permeability is set at 75 for mild steel heat treated to dead soft condition.
Coil #1 is at the bottom
Coil #2 is at the top right
Coil # 3 is at the top left
3 horizontal induced coils in the center pyramid, with 2A being drawn from them.

   

--------------------
STEP 1, START-UP
Coil 1 3A,  1 T
Coil 2 0A,  0.43 T
Coil 3 0A,  0.43 T

   

--------------------
STEP 2
Coil 1 3A,  0.75 T
Coil 2 0A,  0.64 T
Coil 3 1.5A,  0.09 T

   

--------------------

STEP 3
Coil 1 3A,  0.75 T
Coil 2 1.5A,  0.09 T
Coil 3 0A,  0.64 T

   

Repeat step 2, step 3, repeat

[ovun987]

Solid work, Cadman! Any updates with your project?

[Verpies]

This will be a build to see if the flux cutting idea is valid.

You have to think 3-dimensionally even if FEMM cannot simulate it.
It's better to have one central pole of constant flux and polarity ...and multiple equidistant poles surrounding it in a circular pattern like satellites.

The winding wound over the central pole should not cover it all the way up the top so the flux has some room to turn 90°.
The current flowing in the winding wound over the central pole can be DC.
The currents flowing in the windings wound over the satellite arms should be PDC and sequential.

When powered sequentially like that, any object in the air gap will experience a moving unidirectional magnetic flux.
By comparison, in almost all motors the flux is alternating, i.e.: not unidirectional.

More arms are also possible. The more of them are, the smoother the flux transitions.

[ovun987]

Verpies, I absolutely love your design. Do you have any physical cores pictured above, or only digital representations for now?

Cadman, how are things moving along?

[Verpies]

I have only digital but others make them out of divided bundles of enameled iron wire.
Just like Cadman has stated, the amount of magnetic flux in the central post is constant and equal to the sum of the fluxes coming from the arms.
Because of this constance, Faraday's induction does not take place in the central winding but the flux movess around the central post without changing its polarity.

[Cadman]

I feel my silence on this topic requires an explanation. Literally the day after I opened this topic I received an offer to suspend my retirement and return to work for my old employer. It was an offer I couldn’t refuse. The demands on my time right now are preventing much progress on this build but I intend to continue as time permits.