Maybe possible idea for duplicating effect of Holcomb and others

[citfta]

And to me for some reason, no power is removed from the collector rings of the Lundel rotor .
When a three-phase voltage is applied to the stator.
And also the rotor does not want to rotate when selling direct current to the rotor.

Do you have a scope so you can show us what signals you have on the 3 phase wires?

[kolbacict]

Do you have a scope so you can show us what signals you have on the 3 phase wires?

There are about five volts on the Lundell rotor (brushes). Without load.
There is practically no current.
It does not depend on the position of the rotor.

[Jimboot]

Hey Jim,

Man, that Alternator is a beast!!...on what vehicle that goes on?
I see that it has two strands of wire per phase...I figure you should have like 0.4-.0.3 Ohms resistance there!!

Reason why it blew one of your FETs...

I would try with just one strand on each phase.

I was checking out your FETs (IRF1405) and they have even higher spec's (capacity) than the IRF3205...So, when I look at your alternator image, then I  realized where the issue was.

You meant, that when you rotate the Stator (Magnetic Field) "it changed the waveform of the Rotor",  reading from the brushes, I assume?

Look at my alternators below...not even near the gauge size you have, plus you have 2 strands!!

Regards

Ufopolitics

Thanks UFO - the double strand surprised me. This is my first alternator tear down.  I can measure the 2ohm rotor directly on the coil connections. Brushes removed. So I could see at least transformer action before it blew.

[kolbacict]

this little BLDC is working  by turkey technology. 
https://youtube.com/shorts/u-SSQF_LIIM?feature=share
speed and torque depend on the supply voltage.

[Ufopolitics]

this little BLDC is working  by turkey technology. 
https://youtube.com/shorts/u-SSQF_LIIM?feature=share
speed and torque depend on the supply voltage.

That is wonderful Kolbacict!!
It tell us that this Turkish Tech ESC works on any level!!
Can you please, show which one is the common Y point out of the 4 contacts?
I believe it is the far left, looking at the contacts side...based on the resistance readings.
See uploaded image, where it has the + sign.


Thanks!!


Ufopolitics