Solar Panel Voc-MPPT?
Wondering if there is any relationship between measured Voc and MPPT performance with a 24v panel. My 12v panel has a Voc rating of 21.9 and Isc of 8.2, but I often see 8.2ish when Voc is only 20....
Forum Discussion
BFL13 wrote:
...Now with MPPT the big question is whether that drop in Voc would correspond to a drop in amps! (which was my OP question) It seems it could well do so, because Power moves most with the component (I and V) that moves the most (volts) but I will have to see for myself with my set-up how much that might be at our location, temps etc..
The PWM Controller makes the solar panel assume the battery voltage under normal operating conditions, it moves to left of the max power point on the curve, so power will never really be maximized.
The MPPT maximizes power under normal operating conditions, so more energy is transferred over a much wider operating space.
Amps only tell one part of the system performance.
