twodownzero wrote:
I'm running 400 watts with an MPPT charge controller. All of my panels are in series now, but I've wondered if I'd be better off with them in 2x2, series/parallel. I believe I would, it'd just take more wiring.
The most shade tolerant configuration is series IF the panels have bypass diodes. Next is parallel. Series/parallel is last since a panel shadow eliminates that series pair (for say a 2x2 array).
Each of my 3x250W series panels have 3 bypass diodes meaning I have 9 panel sections in series. A shadow on one panel section gives me 8/9 of the power. 2 panel sections with a shadow yield 7/9 of the power, etc.
I’ve posted graphs showing how leafy shadows effect the power output.
