Mostly Permanent Magnet Motor with minimal Input Power

[i_ron]

Ron:

I annotated your drawing and attached it here.  In position 1 the magnetic field comes in at the "top" of the hall sensor (where the black band is).   So in your interpretation you are calling that "South" because your sensor is telling you flux is coming in the top and going out the bottom of the sensor.  You say that flux going in an "up to down" direction is "South" so you label that part of the coil "South."

Likewise in position 2 you see flux entering by the "bottom" of the hall sensor so you call that "North."

The reality is what you see in the annotated sketch.  There is NO "North" or "South," there is just the convention that we have adopted that says "flux direction coming towards you" is "North" and "flux direction going away from you" is "South" when you position yourself above or below the core in your sketch and you look towards the core.

I don't know if you can understand that but your drawing of the cross section of the coil core with the polarities at each corner of the cross section is completely wrong.  The reality is the orange lines of flux with the directional arrows as I have drawn them out.  There is NO true "North" or "South" there is just flux direction as per the convention that we have defined.  All that "North" and "South" really mean on a bar magnet is that flux is "exiting" from the "North" end of the magnet and "entering" at the "South" end of the magnet.  It's a  just a naming convention.  In reality the flux lines are closed loops with no "start" or "end" or "North" or "South."

The only thing the hall sensor is showing you is the amount of flux and the direction of the flux.  It's up to you to make sense of that information and right now you clearly are not making sense of it and you are drawing conclusions and making statements that are wrong.

A stack of cylindrical magnets will line itself up with the field created by the coil.  You are stating "how can the North of the stack of magnets be attracted to the "North" part of the coil?"  The answer is that there IS NO "NORTH" PART OF THE COIL.  Repeat, the cylindrical magnets simply line themselves up with the field created by the coil.

This madness, this endless spinning and grinding and arguing and getting nowhere, could be remedied if you locked yourself away in a room for one week with a determination to understand magnetic fields and to understand how magnetic fields interact with ferromagnetic materials.   Then you will be able to look at a relatively simple setup and nearly instantly be able to visualize and understand what is going on.

OK, that makes sense. Now why couldn't you have said that before now instead of all the insults???
To be an effective teacher you should not start out calling the pupil a dumb shit. I am the first to admit that I am here to learn and open to correcting my mistakes


Thanks for the useful information! real thanks for contributing to the group, much appreciated.


Ron

[i_ron]

deleted

[gotoluc]

Hi everyone,

here is the first test video of the Triple MMM Super build.

Link to video: https://www.youtube.com/watch?v=6GY-lhATLv4

The results are for one coil and one wire strand

More tests to come

Luc

[telecom]

Hi Luc,
incredible results and fantastic setup -a very fine craftsmanship!
I think you are making history here.
Regards

[gotoluc]

Hi everyone,

here is a quick 2nd test of the Triple M Super build.

Link to video: https://www.youtube.com/watch?v=f6pc-XNS9uo

The results are for one coil and two wire strand connected in series


The simple 1 inch wide Triple M Pulled 500g for 0.43 Watts

The 8 inch Super build single coil one stand gave a result of 2Kg Pull for 0.43 Watts

and now the 8 inch Super build single coil 2 series stands gave a result of 2.5Kg Pull for 0.43 Watts

So by using only half of the 8 inch Super Build we are pulling 5 times more then the one inch build

Stay tuned for the full results of the Tandem (double) Triple M Super build

Place your bets on what you think it will pull for 0.43 Watts

Luc