mppt or pwm An opinion from Victron
Hi all, Victron, which makes high quality equipment, has charge controllers. At the end of an overview they give their description of the differences between PWM and MPPT. They do not support it wi...
Forum Discussion
Hi,
For testing, to do otherwise, might give mppt an unfair advantage. I'm sure that they recommend series connections in no shade conditions with mppt, possibly at the "sweet point" of the particular controller (i.e. losses increase from 2% to 4% as voltage reaches the limits of the controller).
I still think I'd go series-parallel with any new four panel mppt install, if the aggregate voltage was in the safe range during cloud effect.
For testing, to do otherwise, might give mppt an unfair advantage. I'm sure that they recommend series connections in no shade conditions with mppt, possibly at the "sweet point" of the particular controller (i.e. losses increase from 2% to 4% as voltage reaches the limits of the controller).
I still think I'd go series-parallel with any new four panel mppt install, if the aggregate voltage was in the safe range during cloud effect.
red31 wrote:pianotuna wrote:
Hi,
My interpretation of the reason for high temperatures is that pwm panel voltage may be below the 14.8 volts needed to complete the charging on a lead acid jar. That can not happen with MPPT because voltage drop is not going to be from 34 down to 14.8 EVER (maybe on Venus?).
They lost me when they stopped comparing PWM/MPPT with the same single 12v panel.
