Blue Sky 3024il
I added 520 watts of solar and a Bogart 30 amp system to my rig. It works well but a new problem has happened. It's now common for people to ask how we can have all these lights going and a big tv and...
Forum Discussion
Parallel 12V similar/same voltage panels with MPPT might yield slightly more power that PWM. Parallel 24V panels on a 12V system is even better, not only better power but lower $/W. The limit is whatever amps the controller can handle. 24V panels are larger.
Serial panels with similar/same amps have to be more aware of the controller input voltage limit considering temperature. My 3x serial panels run 95-110V (at say 80F+) typically and the controller limit is 150V. I could/would not go to 4x serial as it's to close to the limit with low temperatures.
I could go to 4x serial/parallel because the controller derates to 60A output which would not happen often with flat panels. But this setup would be more limited considering certain shadows.
Although off topic my serial panels with 3x bypass diodes each have a big advantage with shadows. A panel with partial shade can produce power, while parallel shaded panels would not produce power. I've posted several results showing the effect of bypass diodes.
Serial panels with similar/same amps have to be more aware of the controller input voltage limit considering temperature. My 3x serial panels run 95-110V (at say 80F+) typically and the controller limit is 150V. I could/would not go to 4x serial as it's to close to the limit with low temperatures.
I could go to 4x serial/parallel because the controller derates to 60A output which would not happen often with flat panels. But this setup would be more limited considering certain shadows.
Although off topic my serial panels with 3x bypass diodes each have a big advantage with shadows. A panel with partial shade can produce power, while parallel shaded panels would not produce power. I've posted several results showing the effect of bypass diodes.
