Solar Illuminace vs Panel Output
How does solar illuminace effect panel output? From yesterdays observation at noonish: 750W, poly, flat, 100F ambient, Vmp=91.7V, Imp=8.18 Logged Varray=75V, Iarray=8.5A, Controller out=605W ...
Forum Discussion
"Sure but what does Voc have to do with the MPPT operation which uses Vmp?"
It doesn't "use" THE Vmp, it picks a Vmp from available V, which is reduced by heat.
It gets complicated, but reading a bunch of stuff on Google plus the owner's manual's for the panels and controllers gradually gets through till you almost think you understand it! :)
Taking measurements like the OP is the way to go, and using your basic math to work out where the watts and amps all got to works with the bumph you read to help understand what they are trying to say.
It doesn't "use" THE Vmp, it picks a Vmp from available V, which is reduced by heat.
It gets complicated, but reading a bunch of stuff on Google plus the owner's manual's for the panels and controllers gradually gets through till you almost think you understand it! :)
Taking measurements like the OP is the way to go, and using your basic math to work out where the watts and amps all got to works with the bumph you read to help understand what they are trying to say.
