Solar-Panel to Controller Loss
Much has been made of the lower losses on the panel to controller path with MPPT because the amps are less. So once you have your loss measured, how valuable is it to improve on that if you don't lik...
Forum Discussion
BFL13 wrote:Voc and it's temp comp is important so that the controller input voltage is not exceeded.
Salvo is using Vmp but it looks like it is Voc that counts?
Here are the IV curves for my 255 panel and its other specs. The I-V curves for temperatures shows what I have seen and reported where at 45C, voltage is 35v
I am stuck on how to interpret the insolation IV curves as to how low for low light you need to go to get a Voc of 30v.
Your posted link shows just over 30V for 45C - the grey curve. From your link use the Pmax temp coff.
Where did the idea that Voc is used to determine power - it's not and Voc is not part of the IR curves.
