Hi everybody, I am testing an idea to feed power
back into the mains on a small scale with hopefully
high efficiency.

The idea is to get something like a 12v 100w solar
cell, invert it directly to 240v AC and feed the
energy back into the mains. This makes that energy
available at all the house wiring.

The advantage of this would be the ability to use
a MPT (max poewer tracking) system where the current
drawn from the solar cell is constantly adjusted by
a PIC to give the max power fed into the mains.
ie, the feedback is after the inverter and this is
all done on a small scale so each solar panel has
its own MPT system. So even if solar panels are
getting different light levels efficiency is good.

Now I have repaired and built 240v ac inverters
before, but this is bit different. This needs to
feed current into the EXISTING 240vac mains waveform
with the best efficiency.

I am considering a 240v:6v 50Hz toroid transformer
with a FET h-bridge feeding in current at the low
voltage end using pwm and then monitoring the current
being fed back into the mains.
Any suggestions for best efficiency??
:o)
-Roman

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