rotoverter for power generation

[esaruoho]

What's a rotoverter?

from http://peswiki.com/index.php/OS:Rotoverter
http://peswiki.com/index.php/Image:D2_rotoverter01.JPG
The output device is an alternator which is driven by a three-phase mains-powered, 3 HP to 7.5 HP motor (both of these devices can be standard 'asynchronous squirrel-cage' motors). The drive motor is operated in a highly non-standard manner. It is a 240V motor with six windings as shown below. These windings are connected in series to make an arrangement which should require 480 volts to drive it, but instead, it is fed with 120 volts of single-phase AC. The input voltage for the motor, should always be a quarter of its rated operational voltage. A virtual third phase is created by using a capacitor which creates a 90-degree phase-shift between the applied voltage and the current.
http://peswiki.com/index.php/Image:D2_rotoverter02.JPG
The objective is to tune the motor windings to give resonant operation. A start-up capacitor is connected into the circuit using the press-button switch shown, to get the motor up to speed, at which point the switch is released, allowing the motor to run with a much smaller capacitor in place. Although the running capacitor is shown as a fixed value, in practice, that capacitor needs to be adjusted while the motor is running, to give resonant operation. For this, a bank of capacitors is usually constructed, each capacitor having its own ON/OFF switch, so that different combinations of switch closures give a wide range of different overall values of capacitance. With the six capacitors shown above, any value from 0.5 microfarad to 31.5 microfarad can be rapidly switched to find the correct resonant value. These values allow combined values of 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, ... by selecting the appropriate switched to be ON or OFF. Should you need a value greater than this, then wire a 32 microfarad capacitor in place and connect the substitution box across it to test higher values step-by-step to find the optimum value of capacitor to use. The capacitors need to be powerful, oil-filled units with a high voltage rating - in other words, large, heavy and expensive. The power being handled in one of these systems is large and setting one up is not without a certain degree of physical danger. These systems have been set to be self-powered but this is not recommended, presumably because of the possibility of runaway with the output power building up rapidly and boosting the input power until the motor burns out.


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i came across that piece of data from an older pdf. hope this helps.
i showed that pdf, to a friend of mine, who jsut said this:
"this is one of the coolest hacks i've ever seen"
"modifying a system to work in a manner different than what was originally intended so like modifying a motor to be a generator"
me: thats what the rotoverter is?
"the key to the RV is turning the stator around
the rest is just to get the electrical current in a usable form
the thing with the capacitors is to tune for power output
and the alternator is a generic way to produce AC, it's basically the same thing as in a car, in a car you have a belt spin the wheel of the alternator and the alternator makes AC
in RV the PM spins the shaft of the alternator and the alternator makes AC
AC then powers your appliances
if you wanted mechanical work, like powering a car you don't need the alternator
you can hook up the shaft to the wheels for example"

hopethis helps.

[wattsup]

Hello to all the RV guys.

I did a lot of reading on the RV on Dr. Adams's web site and his pdf file but for a non-electronic person, although good with complicated mechanical and logic systems, unfortunately reading his information was like getting a Vulcan mind meld. So many ideas being thrown around that I just got totally lost. So my question is simple. Can RV be applied to strictly DC Prime Movers and Generators and if yes, how? I am currently working on an RV system but with DC motors. If my Prime Mover can consume less current, and, if RV can enable the generator to develop less drag, this would be very useful to my system. It is currently loosing about 0.1 volts DC every 4-5 minutes and I am sure it is because of the drag on the generator side, and probably over consumption on the Prime Mover side.

Any guidance would be greatly appreciated.

[ashtweth_nihilisti]

Yes there are many mutations you can build with the RV and DC.

ill direct you to both these compilations
on this page scroll down and look for

) RV energy saving research and development (5MB)-----<<<<<(DC design in there)

3) Advanced RV research and development (5MB)-------<<<(vulcen logic there  )


http://www.panacea-bocaf.org/RotoVerter.htm

[esaruoho]

Hello to all the RV guys.

I did a lot of reading on the RV on Dr. Adams's web site and his pdf file

which url is this dr.adams website on? does it have lots of rotoverter info?

[ashtweth_nihilisti]

No RV info on Dr adams site,  We have a document in the RVreplication yahoo file section that has an Adam idea, under fisher and paykel.