Motor Generators

[Turion]

Looping

Ok, now is the time for all the folks who seem to think they know everything to actually CONTRIBUTE instead of just running their mouths, if there ARE any who actually have a clue. This machine is easily putting out enough power to run itself, but how to make that happen. It’s running on a 36 volt dc motor or I have a 110 volt DC treadmill motor that ran off AC input using some kind of controller. I also have a small AC motor. The output of a coil is 130 volts AC at 1.5 amps. I see NO solution that doesn’t involve running an inverter on a battery, or running straight off the battery. Either way, a battery is involved and whiners will claim it isn’t looped.

[Sawt2]

[bistander]

Treadmill motor

Most treadmill motors I've seen are DCPM commutator types and will not run on AC.

Risking being blamed when your loop fails, to convert AC to DC, use a bridge rectifier (fwbr) and filter capacitor. To adjust voltage, use a transformer (or variac) on AC side, or DC/DC converter on DC side.

bi

[bistander]

Continued

Most switchmode power supplies, AC to DC, accept wide range of AC voltage input like 80-260 and wide range of frequency from 0 to 400Hz(?). I've seen those for bigger computer equipment and battery chargers in the 7-8 amp DC range at 5 to 48V. Might work.

Good luck with it.

bi

[BroMikey]

I am thinking your machinist is making parts and you are sending
him coils with ferrite cores in them. Or is he winding his own and uses
iron cores?

Yes having such a machine operating at the lower rpm would be amazing.

[BroMikey]

BTW Dave

Thane is using smaller coils now and they speed up under load(Not really)
or don't drag down the rotor. He is using 24 magnets on what look
like a 14"-15" rotor. At 3000rmp his tiny coils still do a good job
(2nd gen wire) but because he has so many magnets..........

[Turion]

[Turion]

[Turion]

Progress

I got a second coil wound today, but I can’t find the filters to filter the ferrite. I only had enough filtered ferrite Matt sent me to do one coil. Got a couple bags of ferrite, just not filtered. You need a 200 micron and a 400 micron filter. You want stuff for your core between 200 and 400 microns. I also ordered 2 1/16” thick plastic plates so I can epoxy one on each side of the rotor. They will have holes where the magnets go so the magnets don’t stick out. Lots of little things to fix as I put this smaller machine back together, and my machinist is over at the independent labs today, getting some help with the bigger machine. So this won't be a speedy assembly, but it WILL get done.

Turns out that with 6 north magnets and six south magnets on the rotor you multiply SIX times the 1100 RPM and divide by 120 to get the Hz. So the big machine is doing about 57 Hz. Since the coil output seems to still be 120 volts, he’s going to try running that AC motor on the coil output and if it works, replace the DC motor. He’s keeping me informed.

[bistander]

Bad math

1100 RPM with 6 pole-pairs gives 110 Hz.

bi

[BroMikey]

I got a second coil wound today........

Got a couple bags of ferrite, ...

You want stuff for your core between 200 and 400 microns.

Turns out that with 6 north magnets and six south magnets on the
rotor you multiply SIX times the 1100 RPM and divide by 120 to get
the Hz.

So the big machine is doing about 57 Hz.

Hi Dave
Glad you are feeling better and keeping busy on the project. It is
imperative that motors AND generators fundamentally be advanced.
Since you are one of many who have the experience seems like you
will continue the work by delegation.

I am sure your machinists is a great guy plus very smart. He is a
reserved man which makes him a listener. Anyone who can listen
properly can run the whole show. Nice going.

Concerning the calculations you have posted. It is a rule of thumb or
a number that works out well I am sure based on the diameter of this
specific build. https://www.youtube.com/watch?v=BlK-Usd1tBM
We could go on and on about how many micro-seconds
it takes 1 magnet to pass a pole at the said RPM which equates to the
distance around the circle it travels then how many times it does that
in 1 minute or second. Picking the easy numbers to approximate is more
fun. Math has more than one avenue to arrive at the same place.

On the Ferrite. I know you said this before and for some reason all the
stuff I order now is nano iron dust like you put in caulk broad paint to
make it magnetic also. Point me to a supplier so I can compare dust.

I know sizes change everything

[Turion]

Pick your poison

https://www.pptechnology.com/electronic-soft-ferrite-powders.html

[BroMikey]

https://www.pptechnology.com/electro...e-powders.html

Okay here is their page for "Ferrites for electronics" not just any iron
dust. https://www.pptechnology.com/PPT%20F...e%20(2016).pdf

I will contact them so I have something good. Do you remember if they
require a bulk order or how much you had to pay? Sometimes you may
get samples from companies.

These Ferrites are made of nickel and zinc and iron dust. All 3 components
are proportioned for any freq range needed.

[Rakarskiy]

https://www.youtube.com/watch?v=kjdquk-LLSI

[BroMikey]

https://www.youtube.com/watch?v=kjdquk-LLSI

Nice test setup. Do you think he is getting OU?