Test Method PWM vs MPPT ?
I might get a chance to compare MPPT with my PWM on the set of two 100w panels. I get 12.6 (Isc) now with PWM so that is the "standard" I was thinking of a quick connect set-up to swap controllers...
Forum Discussion
11 will still work, but the lower the voltage that the MPPT controller is driving, the higher its advantage will be. That's the big benefit of MPPT. It counts on PWM losing those watts that it does not as voltage drops. It only makes extra power where the voltage of the load is well below the real, this minute MPPT voltage of the panel, at temperature. At higer voltage MPPT drops its advantage over PWM even though PWM looses a little on AMPs. MPPT drops a lot more on watts up high than PWM. PWM is actually gaining a lot of watts at higher battery voltage, even though it is losing a bit in terms of amps. So the gap between technologies closes.
Running it against a single panel is also best case for MPPT. Multiple or especially mixed multiple panels cannot yield the exact max power from each panel simultaneously (due to variations even in the same model of PV), so the controller has to pick a compromise max for the system.
Jim
Running it against a single panel is also best case for MPPT. Multiple or especially mixed multiple panels cannot yield the exact max power from each panel simultaneously (due to variations even in the same model of PV), so the controller has to pick a compromise max for the system.
Jim
