Table 2 Characteristics of (Sun Power SPR-250NX-BLK-D) PV model

Highest power

250 W

Highest power voltage

42.8 V

Highest power current

5.84 A

Open-circuit voltage

50.93 V

Current court circuit

6.2 A

Cellule numbers

72

Temperature coefficient of open-circuit voltage

 − 0.29103%/°C

Temperature coefficient of current court circuit

0.013306%/°C

Shunt resistance

448.6949 Ω

Series resistance

0.37759