Step 6: PV Array Sizing
Critical Design Parameters (December)
Select PV Panel
Details: Req Current 77.89A → Derated 83.75A
1. Low Temp Voltage Check (Safety):
Temp Diff (∆T): -55.0°C (-30.0 - 25)
Max Voc (Cold): 57.4 V
Calc: 150V / 57.4V = 2.61
→ Conclusion: Max Series 2 units
Max Voc (Cold): 57.4 V
Calc: 150V / 57.4V = 2.61
→ Conclusion: Max Series 2 units
2. Array Current Calculation:
Required Ah = 7670.0Wh / 48.0V / 0.92 = 173.7 Ah
Required Current = Required Ah / 2.23h = 77.89 A
→ With Soiling (÷0.93): 83.75 A
Required Current = Required Ah / 2.23h = 77.89 A
→ With Soiling (÷0.93): 83.75 A
Final Configuration
Series Count
2units/string
Parallel Strings
7strings
Total Panels
14units
Total Array Power
5.74 kW