ANOTHER D*** Solar Question!!!!
Just upgraded trailer to a new, much larger trailer (Timber Ridge 280RKS) which has a "huge" 10W Zamp solar panel. The panel is wired directly to the battery through a master switch and 30A breaker. ...
Forum Discussion
red31 wrote:
Isc yields zero watts, what is the term for panel current at battery voltage + line loss ( as in direct connected or bulk PWM)? Yes I know it can be very close to the same value as Isc or even Imp with a couple/several volts of loss.
The term is I as in IV curve :) Strangely enough those IV curves are for Isc at different insolations. Agree there should be a term for I that you get without short circuiting the panel.
If your PWM set-up is any good, the I you get to the batteries at any moment will be the same "value" as the Isc you would get then if you measured panel Isc.
The panel "rated" Isc is just that value of Isc at STC. You should get that I to the batteries from a panel aimed at a high sun. Isc (and I) at other times depends on insolation, panel orientation, etc.
