vahoo!
Much progress from past posts.
Restarted from scratch-and redesigned the whole dig.
This picture shows the setup a little before where it is now (w/only two coils).
It currently is now three coils. The coils are from an old boiler gas valve (love repurposing someones already acheieved works!)
At first I was trying delta to ramp up the current, then star to test- but both gave me a problem; in that
the coils possitions respective of the magnetic platter are not in the '120 degrees' range nessicary for 3-phase to work.
I was stuck with odd waves clashing wave then discovered something. I could rectify each coil individualy,
then combine them in parrallel or series DC.
Finally got to the point where parrallel was best, as it would provide the needed current for illuminating 2-3 high lux LEDs.
My mechanical gearing is 56 input-14output. So at 90 rpm drive - its 360 rpm output. There are 8 dual pole faced magnets on the platter, so 16 alternating poles. Meaning - for every rotation, each coil recieves 8 full ac waves (right?)
Heres the current results with my cheap multimeter (rpms are marked from input)):
Slow (30rpm): 4vdc at 90mah
Medium (90rpm): 9vdc at 175mah
Quick (120rpm): 17vdc at ? (meter dose not read above 200, but I would guess 250-300mah)
Im really happy with the output, and now I need to figure out the circuit bits (not my forte).
Hopeing to have a super capacitor after regulation so when stopped in traffic LEds still get some
power. Wondering if a buck converter will be required in here somewhere...
Any thoughts? Experiance? Slander
?
Cheers.