Solar Controllers--Don't be a Sucker! :(
Just got to say it again, how it is we are sitting here for five months off grid on solar with no problems at all (third season on solar like this), using the non-programmable, non-MPPT, solar control...
Forum Discussion
You got the scenario with two panels in parallel correct. Isc add when in parallel. MPPT gains are 8% higher.
When in series, Isc does not add, it stays the same. Voltage doubles. The pwm configuration does not take advantage of twice the voltage and will output less than half the power of the mppt config.
This is the primary advantage of mppt. It makes using higher voltage panels, or 12V panels in series possible.
Sal
When in series, Isc does not add, it stays the same. Voltage doubles. The pwm configuration does not take advantage of twice the voltage and will output less than half the power of the mppt config.
This is the primary advantage of mppt. It makes using higher voltage panels, or 12V panels in series possible.
Sal
BFL13 wrote:
What if you had two 100w 12v panels and had them in parallel as 12s and put MPPT on them. Peak amps would go from 12.6a Isc to 13.6 (8% higher)
Now put the two 100s in series for 24v and use the MPPT. What will peak amps be?
