Solar-Panel to Controller Loss
Much has been made of the lower losses on the panel to controller path with MPPT because the amps are less. So once you have your loss measured, how valuable is it to improve on that if you don't lik...
Forum Discussion
If you max out the roof with 12v panels you can go MPPT to get a bit more when the panels are cool, which is a lot of the time.
If you have MPPT already, you can do better by going 24-24 instead of 24-12 for the controller efficiency gain.
If you have 60 cell panels and 24-24, it looks like MPPT and PWM are equal. In theory, 72 cell panels and 24-24 will get you that same MPPT advantage as with 36 cell 12-12.
In my case, 24-12 MPPT with a hot 60 cell panel gets fewer amps than I would get with 12-12 PWM at the same panel wattage and temperature with 36 cell panels.
I have not read up on 60 vs 72 cell, but there must be a ton of info on that.
If you have MPPT already, you can do better by going 24-24 instead of 24-12 for the controller efficiency gain.
If you have 60 cell panels and 24-24, it looks like MPPT and PWM are equal. In theory, 72 cell panels and 24-24 will get you that same MPPT advantage as with 36 cell 12-12.
In my case, 24-12 MPPT with a hot 60 cell panel gets fewer amps than I would get with 12-12 PWM at the same panel wattage and temperature with 36 cell panels.
I have not read up on 60 vs 72 cell, but there must be a ton of info on that.
