wiring solar cells in series
DIY solar cell wiring in series/parallel?
I have 46 3×6 cells at .5V by 2.8A. I could make a 36cell panel wired in series for 18V. However, I would like to wire 32cells in series for 16V & connenct the remaining 14cells in parallel to up my amps. Would the solar cells take this? would it work?
The strings should be of equal length before connecting in parallel. so you have only one choice, since 46 divides into 23 and 2, you can use two strings of 23 each or 23 strings of 2 each. 23 cells is 12 volts. Other connections will waste power.
Look at it like connecting batteries in parallel.
If you do use series/parallel strings, it’s best to use diodes in series with each string. That wastes a bit of power but allows the array to operate if part of it is in the shade.
You could connect two unequal sized strings in parallel if you use diodes, but the only one delivering power would be the longer string, unless it gets shade enough to lower it’s voltage so the other string can take over.
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