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<font size=3>Keith:<br><br>
Her's my guess: Through the MPPT algorithm. The processor
indicates near maximum output, the MPPT impedance reduces to throttle
back power production. <br><br>
This is pure speculation, but I'm stickin' with it (untold told
otherwise).<br><br>
Throwing away power? Yes. If MPPT is not at maximum power
transfer at all times then your investment in PV is not earning it's full
return. However, your inverter investment is not earning it's full
return during the many hours of less than optimum insolation. These
are the two factors to balance in system design.<br><br>
William<br><br>
<br>
At 01:01 PM 8/24/2011, you wrote:<br>
<blockquote type=cite class=cite cite>David, et al<br><br>
Yes, their literature states max output power of 215. Not sure how that
is controlled, except for electronically. <br><br>
So this could be the shunt, so to speak and must take into consideration
voltage to follow some algorithm to keep things humming along at that
threshold.<br><br>
Having said this- are we "throwing away" power then?<br><br>
Keith</font></blockquote></body>
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