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

[fer123]

Hello everyone One of the aspect Pierre show in the video reference from yesterday is the idea the piston he was talking for long time  is the unbalance system, at the end show the nature do the rest maybe the idea of 37 connection is the right one. I will star working in that direction. Thanks.

[jerdee]

We have complete individual H-Bridge control.  We can do any number of H-Bridges in series or parallel, any direction individually or as a group. 30 pins from MCU.  So the number of combinations for switching can be overwhelming. Stator unmodified, coils are still in series 5 slot.

I'd like to report that when you rotate only TWO H-Bridges, Overlap code, N/S, 180º from each other, we can replicate Pierre's first scope shot.  This is nice to see, but nothing special to report on the output yet.  I'll leave this to Luc if he wants to share.

I believe we need to very much consider the effects of armature reaction. Review Pierre's third video at 12 minutes.  Take note of armature position in stator.  30 seconds later you see armature reaction with iron filings.  This distorted field is important. The iron filings show the twisting of the field compared to his armature position. ITS LEADING in the direction of rotation.

Everyone needs to watch this part of the video again.  Study it carefully.
https://youtu.be/OpL0joqJmqY?t=10m20s

The reaction creates a CANCELLATION on the rotor faces.  You have a N/S distorted (twisted) field on one rotor face while the other face is S/N as the rotation continues.  If not controlled correctly, you basically de-magnetize the armature.  THIS WEAKENS THE MAIN FLUX OUTPUT.

Pierre is imitating the mechanical version of an A/C generator as much as he can with his relays.   I don't see any modification on Pierre's rotor iron.   There are many ways to reduce armature reaction.  For example, shaded poles, using leading and trailing pole tips to generate reluctance on opposite ends of rotor face, as well as interpoles to remove distortion. However,  I don't see any one of these being done on his device.  I'm left thinking about how we can get the magnetic flux on the armature by ADJUSTING THE NEUTRAL PLANE!


I don't have this answer yet, but wouldn't isolating the coils in the ROTATING FIELD CREATE A NEUTRAL PLANE?  Is the neutral plane simply NO coils in series? 

Hope this is all helpful to others.
Jerdee

[gotoluc]

I forgot original Piere  motor windings. So maybe it not correct. But my example of 36 coils and 6 wires.
But my schematic not shows complete isolation coil from each other, if Piere this mean. It only show, that curent not fly in other coils while in one coil is flying direct curent and BACK EMF curent.

Interesting wiring configuration MenofFather

Thanks for sharing
Luc

[pmgr]

We have complete individual H-Bridge control.  We can do any number of H-Bridges in series or parallel, any direction individually or as a group. 30 pins from MCU.  So the number of combinations for switching can be overwhelming. Stator unmodified, coils are still in series 5 slot.

I'd like to report that when you rotate only TWO H-Bridges, Overlap code, N/S, 180º from each other, we can replicate Pierre's first scope shot.  This is nice to see, but nothing special to report on the output yet.  I'll leave this to Luc if he wants to share.

Jerdee

Jerdee, can you post a schematic of your H-bridge configuration? If you have 30 full H-bridges and each is connected to a single coil (and all coils are in series like Pierre's original schematic), you would need 60 control lines (30 for Vdd half of bridge and 30 for GND half of bridge) if you want to arbitrarily configure any single coil or any coils in series.

You CAN do it with 30 MCU lines if you change your breadboard wiring for the specific configuration you want.

Anyway, when you talk about rotating only TWO H-bridge above, how many coils did you put in series? Same as your previous experiment?

Have you tried putting 15 coils in series as I described in my previous post? You can do this by rotating one full H-bridge. It will still require 30MCU pins to rotate this one H-bridge over 30 positions.

PmgR

[konehead]

Hi everyone
Is that a mistake on the drawing Pierre just put up message 1050?

There are two red arrows circled in yellow, and also to the right of that on bottom of circle he has the small black current flow arrows clashing too.
Seems like one of those red arrows should be blue, pointing in other direction, and the current flow small black arrows corrected.....

I think the "parallel" question is that yes he shows 6 coils in series per pole position, but those six coils will be connected in parallel to the other poles of either N or S poles. (the red arrows indicate current input and direction it comes from and these arrows are not showing the NSNSNS poles to be in series)

It is open question (to me at least) if he connects ALL coils at once, or only energizes the N poles, then the S poles independent..... I would think much better to only energize only the S blue or only the N red poles otherwise you will lose a lot right where the poles meet through canceling.

But I don't know whats going on, since I thought this drawing was for an untested idea he had for a new version...