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
Take a close look at the "Typical Application" diagram in your link. One bypass diode is across a series of 8 PV cells. Any small amount of voltage produced by those cells will back bias the bypass diode. The diode will not conduct. The larger current from the other cells are now forced into the shaded cells. Forcing the current through the shaded cells will generate a voltage drop. If the forced voltage drop is large enough and shaded cell voltage generation small, the bypass diode can start conduction.
In your testing, if you cover up cells (total darkness), the bypass diode will conduct. On the other hand, if you tilt one panel 45 degrees away from the sun, the diodes will not conduct (as shown by Gale's testing).
Sal
In your testing, if you cover up cells (total darkness), the bypass diode will conduct. On the other hand, if you tilt one panel 45 degrees away from the sun, the diodes will not conduct (as shown by Gale's testing).
Sal
smkettner wrote:
I don't see how partial shade could be worse as any excess should pass forward and any minimal production will allow some power to go through the cells.
http://www.ti.com/lit/ds/symlink/sm74611.pdf
Still more reading to do.
