how to select mppt charge controller

[aakash]

hey,
can any one tell me how to select a mppt charge controller.In my case i have three panels in parallel with specification of each listed below and my battery is of 12v .

Nominal Power (Pnom) = 327 W
Power Tolerance =+5/?0%
Avg. Panel Efficiency = 20.4%
Rated Voltage (Vmpp) = 54.7 V
Rated Current (Impp) = 5.98 A
Open-Circuit Voltage (Voc) = 64.9 V
Short-Circuit Current (Isc) = 6.46 A
Max. System Voltage = 1000 V IEC
Maximum Series Fuse = 20 A
Power Temp Coef. = ?0.38% / oC
Voltage Temp Coef. = ?176.6 mV / oC
Current Temp Coef. =3.5 mA / oC

 

[electrofelon]

hey,
can any one tell me how to select a mppt charge controller.In my case i have three panels in parallel with specification of each listed below and my battery is of 12v .

Nominal Power (Pnom) = 327 W
Power Tolerance =+5/?0%
Avg. Panel Efficiency = 20.4%
Rated Voltage (Vmpp) = 54.7 V
Rated Current (Impp) = 5.98 A
Open-Circuit Voltage (Voc) = 64.9 V
Short-Circuit Current (Isc) = 6.46 A
Max. System Voltage = 1000 V IEC
Maximum Series Fuse = 20 A
Power Temp Coef. = ?0.38% / oC
Voltage Temp Coef. = ?176.6 mV / oC
Current Temp Coef. =3.5 mA / oC

You may want to consider connecting the modules in series for a cheaper and easier wire run. If you went that route, you would need a midnite classic CC to handle the voltage. Either way you need to use a string calculator to find the highest expected voc in cold conditions and select a CC that can handle it. Google "midnite string sizing tool".