WhiteCrow on Nostr: Basicly if you have shaded pannels ina String Bypass diods will reduce the voltage of ...
Basicly if you have shaded pannels ina String Bypass diods will reduce the voltage of the string by the voltage of a pannel.
For better understanding with some basic numbers. A pannel Has 40V and 10A.
9 pannel no shade. 360V 10A
9 pannel 3 shaded. 240V 10A
9 pannel 3 shaded. 360V 1A
If you now have 2 Strings 9 pannel ea on one string 3 shaded. In parralel 360V 11A
Maybe 260V 18A if the mppt is controlling correctly
If you go for more strings in parralel do 3x6 pannel (string the shaded in one string)
Be aware that you will drastically increase the A on the mppt. Overpanneling on A only with very good cooling on mppt not recomanded.
Best case string out shaded pannels maybe use a microinverter for each pannel of the shaded ones.
If you charge a battery use a second chargecontroller for shaded pannels.
The drop in power for shaded pannels results havily on Amps. Eaven some light clouds can result in 10-25% power drop.
If you have still some questions feel free to ask.
For better understanding with some basic numbers. A pannel Has 40V and 10A.
9 pannel no shade. 360V 10A
9 pannel 3 shaded. 240V 10A
9 pannel 3 shaded. 360V 1A
If you now have 2 Strings 9 pannel ea on one string 3 shaded. In parralel 360V 11A
Maybe 260V 18A if the mppt is controlling correctly
If you go for more strings in parralel do 3x6 pannel (string the shaded in one string)
Be aware that you will drastically increase the A on the mppt. Overpanneling on A only with very good cooling on mppt not recomanded.
Best case string out shaded pannels maybe use a microinverter for each pannel of the shaded ones.
If you charge a battery use a second chargecontroller for shaded pannels.
The drop in power for shaded pannels results havily on Amps. Eaven some light clouds can result in 10-25% power drop.
If you have still some questions feel free to ask.