Maybe possible idea for duplicating effect of Holcomb and others

[Ufopolitics]

Not sure that I can explain why it stalls when shorted...

Hello Bi,

I believe rotor stalls (stops) when shorted output, because it magnetizes with its own induced energy.
then it locks down to stator steel.
By the Field being weak, will not be able to move it when locked.

Just my opinion...

Regards

Ufopolitics

[Ufopolitics]

Hi Ufo,

Your observation are correct except for one thing.  Although a car engine does operate at a wide range of speed the pulley on the alternator is much smaller than the pulley on the car engine therefore the alternator actually turns much faster than the speed of the car engine.  The scooter motor I used in the video does not have enough torque to turn the alternator at high speed if I turn up the current going to the slip rings of the alternator.  I did try turning it up more but as the current went up it overloaded the scooter motor and caused the current to go up too high on it.  You have to remember that a car engine has much more power to drive the alternator than my little scooter motor.


Carroll

Yes Citfta, you are correct...if you increase Field strength, the rotor would get very stiff (even more when a load is connected)...and your motor would not be able to drive it.
That is why I like to rotate the Field without depending on Lenz Physical Law...


Good job!!


Ufopolitics

[Jimboot]

Thanks for doing that and sharing Carroll. Simpler fabrication ideas are needed. This was very interesting.

[SolarLab]

 Thanks Carrol - very interesting and educational demo video!

Curious as to what the voltage and current of the three phase signals might be.
Reason I ask is related to building a solidstate uProcessor based 3-phase driver.

SL

[citfta]

I don't know why but I can't seem to upload a picture.  I have tried 4 times to upload a picture of a scope shot showing one of the 3 phase signals and the output signal so you could compare them.  I don't know what the current is of the 3 phase signals but the voltage is about 10 volts peak to peak.


I did discover that the output signal is always locked in sync to the 3 phase signal.  So apparently Bi is correct that some transformer action is taking place.  And the interesting thing is that when i lock the rotor and the frequency of the output signal goes up the frequency of the 3 phase signal also goes up.  So I guess that means that a locked rotor reduces the load on the driving motor.  I am not sure what that means but I find it interesting.


The picture I wanted to share shows that the 3 phase input signal is much smaller in voltage than the output voltage.  I think that is interesting but it may only mean that the current of the 3 phase signal is higher than the output signal.  I guess I need to find a way to measure that.  Been a long day.  Maybe tomorrow.


Later,
Carroll