Pierre's 170W in 1600W out Looped Very impressive Build continued & moderated

[listener192]

Thanks L192. Even it is wise to use the original Pierre's gear, i am still thinking the diy bridge solution. Especially now with this current limit report of yours.

My rotor cover 9 poles, so I am thinking of cutting off 1.5 poles width either side both ends so only a 6 pole width presents to the stator. Ideally I would like 5 but I can't remove that much.

I believe I am losing  a lot of MMF, as this  rotor was designed to sweep a distributed alternator stator phase winding that had a greater pole pitch, which makes sense, as 9 x 3 =27 so the rotor spans a phase with a single pole gap between each of the three phases.

My waveform was not as good as Gotoluc's and although our coil pitches are one slot different that doesn't explain what look like stator pole reversals.

All of the coils have had in-situ checks with a flux probe, so no I don't have coils reversed.

L192

[listener192]

Have discovered something on my rotor, don't know why I did not see it straight away.

There are two ceramic magnets let into the rotor faces.

These set up an initial field to get the alternator generating output. They are detrimental to our operation, as our flux will be reversing poles.

I removed these and have seen an improvement in output and symmetry , as you would expect. It does leave a 13mm x 30mm x5mm deep slot, that will increase the overall reluctance of the rotor, which is unfortunate. It may be possible to plug the slot with a piece that I am planning to cut of the ends to shorten the face to 6 poles.

This may also explain the strange reversals in the pulse waveforms that I was getting. Unfortunately until my relays arrive, I cannot run a full set of switches.



Regards

L192

[gotoluc]

Yes, you have to remove those magnets when using a Generator rotors. Those magnets are to start up the magnetization of the stator in most AC generators.
There's a product called Devcon which is a 2 part Iron resin.

Devcon video demo: https://youtu.be/zQXxdtki-x8

[listener192]

Yes, you have to remove those magnets when using a Generator rotors. Those magnets are to start up the magnetization of the stator in most AC generators.
There's a product called Devcon which is a 2 part Iron resin.

Devcon video demo: https://youtu.be/zQXxdtki-x8

Hi Gotoluc,

Thanks for the video.

Regards

L192

[gotoluc]

Well people are free to experiment with other configurations i they wish but I intend to stick with Pierre's original scheme, on the basis that it was shown to work and an understanding  of how it works is the easiest path to further development, as there are too many variables otherwise.

Regards
L192

I agree L192,
Pierre has laid the foundations and gave away what needs to be achieved:  http://overunity.com/17653/pierres-170w-in-1600w-out-looped-very-impressive-build-continued-moderated/msg520075/#msg520075

Since then, there's 2 pages added of discussions which are not related to what Pierre has just shared. Why?... Pierre must be in disbelief of what's going on with people here when he just gave it all away.... if you ask me, that's disrespectful and insulting.
I'm going to go through those 2 pages now and will delete anything that's not related to what Pierre has just shared. There's been more than enough discussion of all kinds of possibilities and enough is enough.

Regards
Luc

Fr.  Je suis d'accord L192,
Pierre vient de donner les bases de ce qui doit être réalisé: http://overunity.com/17653/pierres-170w-in-1600w-out-looped-very-impressive-build-continued-moderated/msg520075/#msg520075
Depuis, il y a 2 pages de discussions qui ne sont pas liées à ce que Pierre vient de partager. Pourquoi? ... Pierre doit être incrédule de ce qui se passe avec les gens ici quand il vient de tout donner ... si vous me demandez, c'est irrespectueux et insultant.
Je vais maintenant parcourir ces deux pages et je vais supprimer tout ce qui n'est pas lié à ce que Pierre vient de partager. Il y a eu plus que suffisamment de discussions sur toutes sortes de possibilités et assez c'est assez.
Cordialement
Luc