Solar strategy in the east
I'm from Illinois. Camping out in the AZ desert at the moment, I can see that solar is easy out here. Do the math, install it right, and you are golden. Camping in the eastern 2/3rds of the US, i...
Forum Discussion
BFL13 wrote:
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Salvo's graph here does show that the MPPT, by being say an amp over the PWM (same as panel direct connection he did)all day, is twice as good as PWM when PWM is getting 1 amp :) and then when PWM is getting 8 amps mid-day, the MPPT is only a little better at 8.5 amps.
I suspect this is what "they" mean by MPPT doing better in less light, but don't know for sure. If so, it is another example of how you can "spin" statistics. Or maybe there is something real to it?
I still think the answer is in this somehow, where MPPT has a higher percentage above PWM in the shoulder hours than at mid-day. Suppose it were cloudy all day and the PWM never got over say 3 amps?
If the MPPT retained its sunny day shoulder hours worth of percentage advantage all day, then "they" could say it was way superior in daily AH haul on cloudy days.
Of course it would be "spin" because twice a little bit is still only a little, but the percentages look fabulous. "They" don't brag about the mid-day difference on a sunny day.
