Forum Discussion
pnichols
May 17, 2017Explorer II
pianotuna wrote:
So far as I am aware some panels have 3 bypass diodes (one per string). Others may have only one diode per panel.
Don .... now I'm curious.
A solar panel array with it's panels in parallel with each other could of course still maintain the array's terminal output voltage (but with less total current output capability) if a panel became shaded - using only diodes within/around each panel to somehow isolate it whenever shaded.
I guess I need to see some kind of schematic or circuit diagram as to how - electrically - only a diode arrangement could keep a shaded solar panel from lowering the array's terminal output voltage if all of the array's solar panels are in series with each other?
Maybe panels in series do experience a voltage drop whenever one or more panels are shaded, but solar controllers have a large enough input voltage range to deal with it?
It "seems like", for instance, that a bunch of 24 volt panels in parallel always putting out 24 volts - even with some panels being shaded - into the controller would be a superior arrangement. :h
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,102 PostsLatest Activity: Jan 18, 2025