Cheap China Solar Controller Failure
For a couple days been noticing higher than the 14.6 voltage,.....going to 15, and even 15.5,....I knew something was not right. The next day it was showing 16, then quickly went to 17+.......I quickl...
Forum Discussion
MrWizard wrote:
Terminology and the thoughts behind it
Yes that what I'm trying to clarify
I think you will find that a quality MPPT controller doesn't try to buck, if there is no excess voltage, it just passes thru the amps available coming from the panels
When the panels are hot, There is no amps lost with a quality controller
That is one of the misconceptions that keeps popping up being posted
I wish Ken would jump in here, but my limited understanding is that a buck converter cannot just pass the amps through. It has watts in and watts out in all circumstances. It cannot have amps in and amps out. I could be wrong about that of course. ?
Mind games over what is meant by "lost" I agree that if you never had them you didn't lose them. But I think it is clear from the context that what is meant by "lost" in this case is in comparison with what you could have had.
When I get 13.5 amps with my MPPT when my PWM would have got me 14.5 amps, then I might say I "lost" an amp by using the MPPT. OTOH nobody seems to complain if you get 15.5 amps with the MPPT and you say you "gained" an amp :)
