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

[cheors]

Some probable data:

-Notice the potentiometer to the right: may be to adjust the arduino timing (60 Hz frequency)
- 36 wires from/to the motor core (4 x 8 wires connectors + 1 x 4 wires)
- Arduino generate only 8 states to the transistors and relays.(about 1/30 Second)
- For each state, there are 6 active transistors (blue leds)
- and 12 active relays (red leds)( more difficult to see)

But more than 6 coils are switched on at certain time.
I think some overlapping is useful to get a smooth rotating field.
It is the reason why Arduino program generates 8 steps not 6.
Stop the video when you see 3 consecutive leds:one full lit, one dimming and one increasing.

Magic numbers :
72 diodes
72 relays, (9 x 8 =72),
36 coils (x 2 =72)
36 transistors ( 37 ?? , one seems to be down or not wired)
8 arduino states (x 9 = 72)
6 active transistors (x 12 = 72)
12 active relays (x 6 = 72)

[ariovaldo]

It looks like it's 4 poles motor, 1:8 pitch, 2 layers, series lap. I don't know how many turns, but probably 40 turns of 20 or 22 gauge. This assumption is in base of my experience in motors. The core (stator) appears to me, it is 3 hp motor

[Jeg]

My apologies .  I have a basic mistake in my calcs in post #81 that is, viewing the video at .25x equals .25s real time, not .025s.  Therefore all the logic and calcs are useless including post #87.

Sorry,
Pm

No worries Pm. Everyone makes his own calcs anyway. The owner of the device says in his video that there are six magnetic fields at anytime which rotate (6 coils). So with six steps (6stepsX6 coils = 36 coils) we cover the whole cycle. If the time/step is 16.6ms which we know it is(60Hz), then the whole cycle will be complete after 6X16.6ms=99.6ms = 10Hz. And that is the frequency we watch spinning around below the iron fillings.

[ariovaldo]

I'll start to prepare the coils. Any suggestions? Pitch of 6 or 8 as a conventional motor? I do have 20 gauge and I will make it parallel .
What do you guys think?

[pmgr]

I'll start to prepare the coils. Any suggestions? Pitch of 6 or 8 as a conventional motor? I do have 20 gauge and I will make it parallel .
What do you guys think?

Ariovaldo, can you post some pictures of the stator of an induction motor that you have on hand so we can get an idea of how exactly the windings are positioned in such a motor. Photos of top and bottom site with an indication of how the wires run back to front and over the outside.


Thx, PmgR