solar budget of 2700.00 Canadian
Hi all, I'm going to beef up my solar system. The budget is $2700.00 including installation costs. I'm considering these because I will be able to pick them up from Calgary and save the (conside...
Forum Discussion
Salvo wrote:
If however an entire panel in a series string is shaded, the string will output a fraction of its power. Advantage goes to parallel.smkettner wrote:
Except these large panels have bypass diodes that divide the panel in three sections. In parallel a small amount of shade will pretty much take out that panel completely. Series does not shut down the entire array for a few cells getting shade.
If one panel in three is shaded what is the voltage drop of the diodes? I thought it was 2 to 6 volts. But I don't know.
In my case each panel makes 30 volts so one shaded I get 60 volts less the voltage drop of the diodes in the third panel.
I may have to make some measurements one of these days.
Slight shading of all panels may also have your 12v panels all drop out with less than 12v while the series panels making only half voltage would still provide some charge.
Lots of different situations. Shade is always an issue whether series or parallel.
