The "the end drives the process" approach works as long as there is only one
inflection point on the curve (which seems likely). ie if there was a local
power maximum anywhere which was not the global maximum then a simple minded
system could lock onto it as it can't "see" the true global maximum point.
Apropos of nothing relevant - this is the same way that natural selection
works - an organism is optimised to the nearest local peak regardless of how
much higher peaks, or upward paths to higher peaks,  may exist a small
distance away. "Smaller" here is just greater thanthe maximum distance that
anything will move away from the local optimum due to "noise". Applies
equally to darwin's Finches and solar charging optimisers. In the case of
processor controlled solar trackers it would behove the designer to
occasionally have oit scan over a MUCH larger range than needed to track a
local maximum "just incase".


        Russell McMahon


> Now why didn't I say that. ;o)
> -Roman
>
>
> Olin Lathrop wrote:
> >
> > > With a system like battery + solar panel the part that most affects
> > > efficiency is the one with the higher Ri, and that is the panel, so
the
> > > mppt system should concentrate on that point, ...........

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