More MPPT Confusion and Question
Still trying to understand my MPPT set-up and what would be the effect of changing things a bit. My 230w (30.0 Vmp x 7.7 Imp) poly panel has a Vmp of 30.0v with a measurement tolerance of +/- 3% S...
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That is the missing information for sure, at the controller input. I have taken voltage there but never the amps. I have taken Isc there and got higher than panel rating 8.3 so I thought that meant insolation was ok.
Isc is not what the controller uses for Imp and I still have the missing watts.
So if 230w is supposed to be 30 x 7.7 and panel voltage measures 29.3 and watts is maybe 200, then 200/29.3 = 6.8a I cannot understand how Imp could be so low when Isc is at its rating. Isc does go up a bit with temperature but not that much.
I keep thinking I am farther down that nasty IV curve knee than I should be.
Isc is not what the controller uses for Imp and I still have the missing watts.
So if 230w is supposed to be 30 x 7.7 and panel voltage measures 29.3 and watts is maybe 200, then 200/29.3 = 6.8a I cannot understand how Imp could be so low when Isc is at its rating. Isc does go up a bit with temperature but not that much.
I keep thinking I am farther down that nasty IV curve knee than I should be.
