Unless you've got some trick synchronizing logic you have absolutely no reason to believe that three inverters are clocked right.
In my experience conversion of DC to 3-phase is only ever performed in a unitary inverter for this reason.
So, this set-up appears incorrectly engineered.
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For the life of me I can't understand why any manufacturer would provide the extra logic needed to synch one-phase units. I can think of a ton of reasons why it wouldn't be done starting with warranty issues for field engineering by contractors.
Inverter power is non-harmonic. So I'd suspect that you're already undersized pretty much across the board.
That's one of the brutal realities WRT solar. You have to build for peak flows which will only ever happen during the hottest days. Average use will be a trivial fraction of that.
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The whole solar energy economy is a scam. Without endless government subsidies it can never work anywhere at any time.
The obvious exception being low power, off the grid communications gear.
The desire to hold down carbon dioxide emissions is folly. Plants require it to grow -- it's fertilizer to them. NASA proved that 45 years ago when testing for closed cycle food provisioning for astronauts.
All that happens with higher concentrations is that plants grow even faster and suck it out of the atmosphere. That a scientific fact. One of the reasons for increased crop yields across the planet is this effect.
There is active research attempting to directly produce bio-diesel from modified algae. Left unsaid is that every scheme uses super concentrations of carbon dioxide to kick things along!
So, instead of a runaway heat effect we are left with simply more plant life everywhere.
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The other one that kills me is the shtick about oceanic carbon dioxide hurting shell fish. What a riot. Carbon dioxide is THE essential component required to deposit their shell. Like plants, shell fish suck down carbon dioxide like we breath air. If denied to them, they stop growing / die.
In an ancient age, carbon dioxide was very much more present. Shell fish grew like crazy. That's why we have the white cliffs of Dover. Imagine how many tons of carbon dioxide are trapped there!
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But if that isn't enough, a SINGLE volcano is able to emit more carbon dioxide than our entire nation. And that has been going on since the Earth was the Earth.
73,000 years ago Taba, a super volcano, let loose enough carbon dioxide to beat all. We're still here. So much for melting the ice caps, etc.
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One thing that is going to crimp home owned solar: roof repairs and roof falls.
You can be certain as the years go by many a man will fall of the roof attending to the solar array.
But a real kicker is the need to have the array removed before the roof can be repaired -- and then put back.
To maintain the warranty, the original contractor is going to want to handle his panels.
Last edited by Tesla; 11/04/10 03:12 PM.
