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

[seaad]

I just observed in Lucs last video with the consecutive LEDs in ultra slow sequence that the LED comes on and goes off in "two brightness steps" !
Maybe the camera fools me?

[listener191]

See the rough sketch attached.

For 5 coils on a 5 slot pitch, 63 slots would allow all applied current to be realized as flux through the rotor.

You need a 5 + 1 slot gap between the coil groups to ensure the poles don't overlap.

The way we are proceeding at the moment much of the flux is cancelled out.



L192

[MichelM]

Well, that's interesting!
PmgR is certain there is no bucking coils event in my configuration even though I have 6 slot space compared to 5 slots.
Please have a look at the video I just posted (above post) for a visual confirmation of the coil firring and have a look at the wiring chart PmgR made to see if you can find something that could cause the ridiculously low output. Maybe the Half bridges are conducting through another path?

Thanks and everyones input is welcome. Please have a look TK to see if we are missing something. Keep in mind that 5 coils are powered in series plus one 50% overlap.

Regards
Luc

Luc, I made this drawing to help with the reflection. This is your configuration on the 30-groove rotor, with each coil on 6 grooves. All pairs of coils in each of the grooves are in opposition.

I'm sure yes, but I ask the question anyway, did you mate the ends of the coil wires in series, joining the end of the previous coil with the beginning of the next coil (considering the direction of the 'winding)?

FR
Luc, j'ai fait ce dessin pour aider à la réflexion. C'est votre configuration sur le rotor à 30 rainures, avec chaque bobine sur 6 rainures. Toutes les paires de bobines dans chacune des 30 rainures sont en opposition.

Je suis certain que oui, mais je pose la question quand même, avez-vous bien accouplé les extrémités des fils des bobines en série, en joignant la fin de la bobine précédente avec le début de la bobine suivante (en considérant le sens de l'enroulement) ?

[onielsen]

Hi Luc,

I think Mosha points out the problem:

I saw your video I noticed that only 6 led are active, if I understand the diagram of pmgR, it would take 12 active contact by step, we would say that in this case 3x10 coil are active instead of 6x5 coil?

The number of magnetic half poles have to be an even number as magnetic fields always curls back forming loops. This is a problem in your stator! It is a 1.5 poled stator as it has 1.5 pole sets. Thus a return path for the last pole is missing or actually 1.5 poles are missing if making a three poled stator.

Regards
Ole

[onielsen]

Flux path with two positive and one negative input. If all three inputs have the same polarity there's no magnetic field generated.

Regards
Ole