rotoverter for power generation

[esaruoho]

a frequency driven rotoverter..
http://video.google.com.au/videoplay?docid=9089608413203959523
Rotoverter Frequency drive Demonstration] 3min42sec (6th July 2007)

[esaruoho]

some of you might find this ev-gray message interesting:
"Hello all,

Tonight I achieved over unity with an RV conversion variation.

For PM I used a junkyard 10hp 3 phase 1725RPM motor. Wired for RVPM.

No load other then turning an un loaded alternator with 37uf of
capacitance, .6 amps at 120.5v ac (from inverter). 72.3 watts.

For an alternator I used an old (I mean old) single phase, 120v
1/3hp 1725 motor. I used a belt to connect the two, the pulleys were
almost the same, alternators a little smaller so it was being over
driven a bit.

No load and 62uf I was at 159v and 6.6 amps with PM at 40uf and 1.8
amps at 120.5v.
I then loaded the alternator with (4) 100watt 120v light bulbs, (2)
in series (2 pairs in parallel). It seams you have to let the
alternator load up with capacitance then hook up the light bulbs. It
would not generate when I started with the bulbs connected.

Alternator loaded with (4) 100 watt light bulbs (at full brightness)
I had 4.7 amps at 125v (587 watts). The numbers were the same at the
bulbs, caps or right off the alternator.

With alternator loaded PM was at 62uf and 2.6 amps at 120.5v. 313.3
watts.

Gota run,

Jason"

[hanker886]

esaruoho,

I am new to RV. Seems you are much more experienced. So my question to you is, where is the RV OU from? Drive motor?

thks

Hank

[oouthere]

The more I read the post the less it makes sense and does not look like o/u to me.  He states he has two bulbs in series and two series sets in parallel.  Well, that means he only has 62.5VAC at each bulb, not the necessary 120VAC to run them full brightness.  He would need to measure 240VAC at the caps in order to have his estimated o/u at the series bulbs.

I believe he is measuring the output voltage of the alternator with the full amp output of the alternator which includes the power necessary to charge the rotor (load plus capacitor bank).  IMO, he is only getting about 200 watts of usable power from 313 watts input.

Rich

[hanker886]

Rich,

Which reort you are looking at?