170 watts in - 1600 watts out - looped - Very impressive build and video

[gotoluc]

Hmmm... I see DigiKey has the L298N for $43.65 for 10 units.... free energy certainly isn't cheap is it!   

And this application will certainly need a printed circuit board to mount and route 30 of these devices... which by the way only handle about 2 amps per channel and will probably require heatsinks.

Has the PCB been designed yet?


(OH... now I see the module board photo. Well at least that solves some of the problems...)

I found some on ebay  https://www.ebay.com/itm/222461752336  from Georgia, USA  5 for $9.95 with delivery. Can't beat that!
Already mounted on PC board with connection terminals and heat sink included. See below picture.

Luc

[pmgr]

Here is my latest take on Pierre's coil configuration and how coils are connected to each other, please see the attached PDF. It also takes into account the two different current directions that Pierre explains in his latest video. All coils are looped back onto eachother as well.

I believe this is the correct configuration in terms of coil winding and positioning (same as Luc did in his videos), but please check how each coil connects back to the next one. Eventually going around (I didn't draw all of the connections), the last coil_36 connects back to coil_1.

Of course any and all feedback is appreciated!

Enjoy, PmgR
====
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[DreamThinkBuild]

@Luc

Nice work on the motor winding videos. Thank you for the translations.

Here is a quick tutorial on that L298n board.
https://tronixlabs.com.au/news/tutorial-l298n-dual-motor-controller-module-2a-and-arduino

@Pierre, thanks for sharing.

Some suggestions:

- Remove the resistor the biggest loss in system, pre-charge the capacitors externally to about 20volts then place/switch into system. The only place you need the resistor is in the pre-charge stage so you can mitigate in-rush current.

- Not sure what your capacitors board max current rating is, but increase wire diameter to caps. I'm using 4/0 AWG for a initially pre-charged 96v@78F ultracap bank which is in parallel with a solar battery bank this is for 6kw, no issues with heating and no resistors required.

- In the graph you drew in Part 5 of your video where you draw the noisy peak power. Could you create a new branch of the code so it only sweeps/switches the peak power area instead of the entire set? This would be very telling and important if the effect remains because of the moving magnetic field or something else. This would only require a change to the code nothing else.

[gotoluc]

Awesome job PmgR

I looked over your pdf  (attached below) of all coil positions and connections and all looks perfect.
The pdf looks so professional man! ... thanks for the great job and sharing it.

Luc

français
Super travail PmgR
J'ai regardé votre pdf (ci-joint) de toutes les positions de la bobine et les connexions et tout semble parfait.
Le document pdf a l'air si professionnel! ... merci pour l'excellent travail et le partage

[Jeg]

Hi Luc
Well done mate, very professional and stress free videos from your part. Thumps up!
I wonder where did you find these nice looking plastic slot-covers for your coils. I am afraid that i have to make them by my self as i don't find any ready solution in my local market.

Hi Pierre.
It is difficult for someone to suggest a topology for the receiver coil when the process is not yet fully transparent. So only assumptions can be made as for an answer to your question. I see that your stator has enough depth to fit more coil-receivers independently working or connected in parallel for greater current. Perhaps a star like core would also work fine.

Regards   

Regards