Maybe possible idea for duplicating effect of Holcomb and others

[citfta]

Bi,


You are correct about the brushes not being needed on the output alternator if I lock the rotor as I intend to do on the final testing.  But on the other alternator I will be turning the rotor so I will need the brush holders.  I also intend to vary the input power going to the brushes on the generating alternator.  And in the interest of learning more I intend to try the output alternator both with the rotor free to spin and with it locked.  I think I know what I will see but I want to verify that with actual testing.


Making the brush holders shouldn't take too long as they can be made of anything that is non-conducting.  And I have a milling machine.  So sometime tomorrow I should be ready for testing.  Both alternators have actual brush holders that make connections to and support the brushes.  What I have to make are supporting holders for them because they were mounted to the regulators.


Thanks for all for their comments and suggestions.
Carroll

[matu]

Hello, in case it could be of help, I leave you some similar tests that a Spanish friend carried out.

https://www.youtube.com/watch?v=BhEGuX8GyBM
https://www.youtube.com/watch?v=DahfeaGj3xo

Cheers

[citfta]

matu,


Thanks for sharing those videos.  What I saw in the second video did not make a lot of sense to me.  So I will continue with my research and testing.  I think his frequency of AC coming from the first alternator was too high for the second rotor to lock to when he shorted the rotor with it stopped.  If he had gotten the second rotor turning faster and then shorted the slip rings I believe the second rotor would have locked to the rotating magnetic field. His second alternator behaved like an industrial 3 phase motor with one of the phases missing.  In that condition they have low torque and have to be started by hand and can be started in either direction.  In other words I think his testing might have a problem.  I will know more when I get my system together.


Thanks again for sharing,
Carroll

[Ufopolitics]

Hello Citfta,

On this type of test, I will consider to use one of this old type alternators...like for 1980's Truck vehicles...or earlier, for the purpose of their simplicity at the regulator and bridges...
Can you leave on, the Diode Bridge on the 3 phase Generator side , and feed the second (rotary 3 phase field) from the 3 wires going to the bridge?
The reason I am writing this, is to be able to "jump" your exciter coil -directly- with the same electrical output from the bridge Positive-Negative.
I believe this way you will just need to control rotation speed through the electric motor...and may even get a 12V CAR Battery to charge it as you test it...

IMHO, I believe this is the correct way for all these Systems...same way it works for any Generator out there...which does not require any external Input...just rotation of the field.
In a Car Alternator we have the same thing, except it also charges the Battery, but, if you disconnect battery (of course, after vehicle started)...vehicle will keep running, plus all accessories working...just because Alternator is 'back-feeding' itself.

After all they are designed to do just that...as I believe an External Input, say from a Battery is only for startup purposes...otherwise the Amperage to the exciter field would be of very low amps...so you will not get a strong field.

That is exactly what I believe happened to the previous spanish guy video shown by Matu on the first video...He only gets like Milliamps...when these generators work on very High Amps. He is feeding the Alternator Generator exciter -at all time- with a small, maybe 7Ah battery, used for House Alarms...

Hope you understand my point.

Regards

Ufopolitics

[citfta]

Hi Ufo,
I do understand what you are saying, but I want to be able to adjust the input power to the slip rings.  That way I can see what effect changing the input power has on the output as well as being able to adjust for changing speed of the input rotor.  If the theories about a virtual rotating magnetic field are correct as I go up in speed on the input rotor my output should increase in voltage.  By being able to adjust my input voltage I can then control all variables.
From what I saw on the two videos I believe he did not have all 3 phases going to the output alternator.  It just didn't act right.  I could be wrong but I am pretty sure he was only getting a single phase to the output alternator. 
Got to get back to work.
Take care,
Carroll


PS: Hope to have something to show by tomorrow.