Chris,
The setup I was using is intended to be a quite power system for a jobsite that has no grid power, I do not want a gas or diesel engine running in the back ground when no power tools are being used.
The reason, other than a learning exercise, is to have a cheap method of having a pure sine wave supply for electronic tools that cannot handle chopped power. (I'm aware this system will result in a lot of wasted energy)
The setup in sequence....
To step up to larger (but momentary) needs, a small air compressor and fair sized volume tank, will drive a flywheel powered by one or two airmotors which are engaged (through the use of clutch bearings) when an amp load exceeds the delta motor limits, this eliminates the amp overload throughout the entire electrical system.
The system as described, does work, the 12 batteries will provide power in a day for more hours than I can work, then a recharge overnight will have everything ready for another day.
Hope this is not more than anyone wanted to see :)
Ron
--- In electricboats@
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> Thats extremely interesting Ron. Do the DC motors work fine on the rectified quasi sine wave? has anyone tried rectified quasi sine to power an AC drive ? ( usually above 2KW these are fed from rectified three phase sine)
>
> Chris S
>
> --- In electricboats@
> >
> >
> >
> > Hi George,
> > The motors I made mention of, are in fact PM brush motors, they are rated 130V DC and 18.5 amps, 6750 rpm. Using a router speed control and a full wave bridge rectifier I can use batteries or grid power.
> >
> > The inverters give a one step increase 12vdc up to 120vac modified sine wave, 5,000watt cont. and a peak of 10,000watts for a few seconds.
> >
> > I have used a stepup transformer, 5000 watt, to deliver 240vac with about 21 amps to drive a Delta 2HP planer motor. (220vac 18amps 3450rpm).
> > I dabble and tinker quite a bit so I tend to mix and match things a lot, moving parts and pieces around I seem to never keep any one project in a complete and functioning group.
> > I do enjoy dreaming and scheming :))
>
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