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

[TinselKoala]

problem in the code? does not matter

Well... I agree that the code problem doesn't matter to the final outcome.   

You can not see it at once.

Anybody with the least little bit of Arduino (or C++ or even BASIC) programming experience can see it right away, simply by counting how long each output stays on.  It should even show up on "oscilloscope" traces.

[T-1000]

That was shared at the beginning of the topic but here it is again.
There is nothing else available.

Regards

Luc

Thanks Luc,

In that scope shot the coil switching is shown on ramp-up in positive and ramp-down on negative cycle. One thing I am not sure about - the coming back to neutral point do not have same spike steps. So my question is - what was happening on that part, was there any capacitor in circuit? If it was and the power generation cut-off was happening that would slope with explain weak noise when going back to neutral point.

Maybe Pierre could elaborate on this?

Cheers!

[TinselKoala]

Thanks Luc,

In that scope shot the coil switching is shown on ramp-up in positive and ramp-down on negative cycle. One thing I am not sure about - the coming back to neutral point do not have same spike steps. So my question is - what was happening on that part, was there any capacitor in circuit? If it was and the power generation cut-off was happening that would slope with explain weak noise when going back to neutral point.

Maybe Pierre could elaborate on this?

Cheers!

I can elaborate on that.

The toy "scope" does not have the bandwidth or the screen resolution to properly display spikes and squarewave transitions. Had Pierre only shown a single cycle or perhaps a half cycle, you would be able to see a little better what is happening. But spikes are disappearing and/or varying in amplitude and the rectangular pulses are not of constant duration on the screen. Some of the variation in duration MAY be caused by the timing irregularity I have pointed out, IF indeed Pierre used that code to make that scopeshot. Apparent variations in pulse timing can also be due to the low screen and ADC resolution of the "scope" even if the pulses are actually quite regular.
You will get nowhere by overinterpreting a bad display of bad data.

There are ways to work around the limitations of the toy instrument. But without the real cooperation of the person operating the "scope" and the apparatus, it's not going to happen. 

[jerdee]

Pierre,

Hope you are doing well and progress is coming along.  I've given more thought. You show 6 poles on original stator drawings yet your scope shot shows single phase output.

I've recently found a nice video that explains interesting qualities.  The presenter breaks down the control for each phase to get single phase output.  There are many qualities about this video that are similar to your device.

Watch especially at the 4:24 area.
https://youtu.be/ZAY5JInyHXY

I'm building a foundation on learning AC generator basics with only three phases to control.  I know this video is directed towards DC brushless motors, but the presenter shows generator action by applying positive to all three phases at the same time.

This method of control is much simpler.

-You don't need current in all three phases at the same time. Only two and they are shared.
-You have isolation of each phase. Only one phase is off at a time in rotation.
While the other two phases are opposite polarities.
-You tie all ends of your three phases together on the stator.  This is the neutral point.
-Current can now be shared between different phases at the same time. You'll increase inductance.

I'm seeing a lot of similarities.  But again, I'm taking time to learn as much as I can in research at this moment on three phase control.

Jerdee


Fr. 
Pierre,

J'espère que vous allez bien et que le progrès avance. J'ai donné plus de réflexion. Vous montrez 6 pôles sur le dessin du stator originaux mais votre scope montre une sortie monophasée.

J'ai récemment trouvé une belle vidéo qui explique des qualités intéressantes. Le présentateur décompose le contrôle de chaque phase pour obtenir une sortie monophasée. Il existe de nombreuses qualités similaires à votre appareil sur cette vidéo.

Regardez surtout à 4:24.
https://youtu.be/ZAY5JInyHXY

Je construis une base sur l'apprentissage des bases du générateur AC avec seulement trois phases à contrôler. Je sais que cette vidéo est dirigée vers les moteurs sans balais à courant continu, mais le présentateur montre l'action du générateur en appliquant positive aux trois phases en même temps.

Cette méthode de contrôle est beaucoup plus simple.

-Vous n'avez pas besoin de courant dans les trois phases en même temps. Seulement deux et ils sont partagés.
-Vous avez l'isolement de chaque phase. Une seule phase est désactivée à la fois en rotation.
Alors que les deux autres phases sont des polarités opposées.
-Vous attachez toutes les extrémités de vos trois phases ensemble sur le stator. C'est le point neutre.
-Current peut maintenant être partagé entre différentes phases en même temps. Vous augmenterez l'inductance.

Je vois beaucoup de similitudes. Mais encore une fois, je prends le temps d'apprendre autant que possible en recherche en ce moment sur le contrôle en trois phases.

Jerdee

[pedro1]

Je regarde ça  se soir et je vous refonnerez des nouvelles


En. I will look at it tonight and then give you an update,