This one is intresting.

[Ufopolitics]

@Pix


I understand, but is not easier and simpler just to replicate this setup as it is built on the video?
It would show the veracity in exactly what is shown, at smaller scale...besides being much cheaper.

If you notice on this setup (video) the motor is a Two Phase, running off the two faces (out of Three total) that Alternator have as Output...So, He uses the other phase (120V AC) to run drills and other tools...

Anyways, I just wanted to render an opinion here...not important.

Cheers




Ufopolitics

[bistander]

Hi Ufo & all,
It's called a Lundell or claw rotor

https://www.researchgate.net/figure/Exploded-view-of-a-Lundell-alternator-3_fig3_237464668

And replacing it with PMs cannot increase voltage X10 unless RPM is increased X10.

bi

Edit, ps.  Skew of magnets or pole face edge is done to reduce cogging. No magic there.

[citfta]

Hello bistander and all.


Sorry to disagree with you Bi but in the normal use of an automotive alternator the output is controlled by the field current which is controlled by the voltage regulator.  There used to be kits you could get to bypass the regulator that would increase the field current so that you could use the output of the alternator to run 120 volt electric drills or saws.  Before the days of all the battery powered tools they were used by contractors on job sites for their power tools.  Of course the power tools had to have brush type AC/DC motors as the output was only DC.


So strong magnets on the rotor can provide 120 volt output without turning the alternator 10 times faster.


UFO I am curious where you got the idea the motor was 2 phase as he plugs it into the same power strip that he plugs the drill in to?


Take care guys,
Carroll

[activ25]

If you increase the voltage so the current decreases no ?

[pix]

@Pix

If you notice on this setup (video) the motor is a Two Phase, running off the two faces (out of Three total) that Alternator have as Output...So, He uses the other phase (120V AC) to run drills and other tools...

This ia ONE phase motor with capacitor. Three cables:
-phase
-neutral
-PE ( grounding protection)

PS.
The reason I am going to use 2,2kW squirrel cage motor is that I am going to make more powerfull generator, I can use 3x 230V at output. I understand principle so I don't need to blindly follow the same what guy did with alternator. Besides, he mentioned that he used car alternator simply because he didn't had 3 phase induction motor at hand.
There are many places on the web where subject of converting induction motor to PM generator is fully explained.

Cheers,
Pix