Solar charge controller upgrade?
Hello! We're getting ready to hit the road with our new-to-us '95 Winnebago this spring. The 30' 1995 Winnebago Adventurer came with solar power setup, consisting of 4 100W solar panels and a PWM cont...
Forum Discussion
1. MPPT won't do any better than the PWM with four 100s lying flat on the roof,
or,
2. PWM won't do any better than the MPPT with four 100s lying flat on the roof.
Both cannot be true. I believe #2 to be true.
Given: the OP has 12AWG wiring(per a prior post).
Simply swapping out the PWM for MPPT on the 4 x 100W=400W 12V parallel array would hinder the MPPT.
To release the capabilities of MPPT, the panels need to be rewired into a 2 x 200W=400W 24V array where the MPPT will likely do more.
My Summer tests have shown up to 11% more during the middle of the day. That is not an edge case, but the time when I need more to run two 12V compressor fridges.
HTH;
John
or,
2. PWM won't do any better than the MPPT with four 100s lying flat on the roof.
Both cannot be true. I believe #2 to be true.
Given: the OP has 12AWG wiring(per a prior post).
Simply swapping out the PWM for MPPT on the 4 x 100W=400W 12V parallel array would hinder the MPPT.
To release the capabilities of MPPT, the panels need to be rewired into a 2 x 200W=400W 24V array where the MPPT will likely do more.
My Summer tests have shown up to 11% more during the middle of the day. That is not an edge case, but the time when I need more to run two 12V compressor fridges.
HTH;
John
