Muller Dynamo

[plengo]

Yes first there is an odd number of coils to magnets this helps prevent no load cogging as each field is overlapped. But under load it begins to bog down again UNLESS the cores are Re-gauged.  By adding another magnet to the back side of each coil the coil once pulsed becomes latched in north or south pole state. Lets say the coil is latching South it approaches a South facing magnet and tries to repel against the coil. Normally the greater the current from the last magnet pass the greater the latching as it approaches a new magnet so the lugging increases.  The Re-gauging RESETS the coil by forcing back the flux in the opposite direction but it actually over shoots! This creates a north biased coil attracted fast to a south pole magnet and provides free acceleration energy into the system.

The solid state version of this is called ....wait for it = MAGNACOASTER. This is why magnacoaster has 5 neos one end and one the other with a measured tuned GAP. Yes its OU.

More abrupt the process is Bloch wall modulation where the return or re-gauging bias is an over shoot of energy from the back end magnet.

@bolt,

this is (I think) the second time I read something from you and I must say: It is very logic what you are saying and brilliant observation and conclusions of yours. The overshooting of the magnetic field, "viscosity", seems to really explain what we are seeing here. I think another guy in this forum was talking about this to be the key also for the mystery of Orbo device.

I had to read your post really slow a few times in slow motion to "see" the phenomena you explained. Just like waves in a pond, just a bit late and the magnetic field "forces" the ferrite core to retard the instantaneous reaction it would have into a profitable event where it attracts the next magnet, therefore, re-gauging.

Brilliant and it took a brilliant experimentalist to make it happen into a real device (really thank you Romero).


Today I purchased the neo-magnets, 13/16" x 3/8" N42 (about 25 of those), plus a 12mm shaft and its mounted flanged bearings. Also I ordered 2 of 20" x 20" plexiglass sheet and MDF for the disk. Dying to have it delivered to start building.

Fausto.

[EMdevices]

I'm taking all this information in as fast as I can and I have a few suggestions for RomeroUK.

1)  make sure you document everything, it's very important.
2)  continue to explore why you got the results you did and what are the critical factors, we need to determine the fundamental principle so we can duplicate easily and also scale up the design.


It sounds like the Muller arrangement of having one more coil on the stator than magnets on the rotor, i.e.  8 to 9 ratio, is a primary factor of importance, along with the fact that magnets are biasing the ferrite cores.   The biasing is critical in eliminating the hysteresis losses, and the motor pulsing arrangement is another very low loss mechanism,  so I second what bolt was saying,  don't build some cheap setup, go for perfection and eliminate as many losses as possible.


An interesting observation I made is that the ferrite is biased and the rotor magnets are in opposition.   This means the B-H curve is traversed from high H values to low H values and then back, as a magnet on the rotor approaches a stator coil, passes under it, and then departs away.  I think this cycling of the B-H curve from high-to-low and then back is very significant!  Romero, you might want to experiment and reverse all the polarities of the magnets only on the stators, and see if it still works.

EM

[toranarod]

just finished the rotor stage PVC disc with 8 Magnet Neodymium Disc N45 Rare Earth 22mm x 10mm fitted and center bearing.
I have two projects on the go today. I am still modifying My Adams motor to incorporate as many of the Muller Dynamo Techniques as I can.
I am interested in some of the electrical fundamentals. I want to test theses while I complete my replication.   

[sigis]

We have bad experience with MAGNACOASTER. My friend made money transfer 2 years ago and ordered device, but still not have it. And no money back. No answers to telephone calls, etc.

[Arthurs]

romerouk and Hello everybody:

    Because my English is not good, A lot of content can only guess, On the multi-strand wire:

1) a recommended 0.8mm multistrand,
2) Another way of saying they recommended 7x0.125mm litz wire,

    But: accurate mapping from the actual point of view, 7x0.125mm litz wire of the total cross section diameter of 0.375mm, And 0.8mm diameter cross section a lot of difference.
    I understand wrong? What is correct?

PS: multi-strand wire in the end is the option of using multi-strand bare copper wire? or choose to use multiple Enameled wire?

Thanks for helping