Heat 1, MPPT 0
Previously we noted that heat is hard on MPPT due to the panel's loss of voltage with increasing heat. Doesn't bother PWM though, you still get Isc or more. This Spring, I took some measurements p...
Forum Discussion
There was a study that once the panel reached 44C, its output in watts drops not by 0.3%, but by 1% per each C degree. If I understand correctly, it's voltage that drops. Perhaps not much to worry with BC weather, as it rarely gets ridiculously hot there, but with PWM, when it gets really hot, you would have Vmp below 15V, not to mention voltage drop in wires. OTH, with MPPT in the same scenario you would get wattage drop, i.e. lost amps and amp-hours, which sounds like lesser of two evils.
It's also possible that your controller's V/A conversion doesn't work too well.
It's also possible that your controller's V/A conversion doesn't work too well.
