PV Array Voltage & Current Calculator

This calculator calculates the design voltage and current for a PV array, according to the IET Code of Practice for Grid Connected Solar Photovoltaic Systems. Enter the module open circuit voltage, short circuit current, number of modules in a string, and number of strings in parallel to calculate the design voltage and current.

The design voltage is calculated as: $V=V_{oc}\times N_s\times 1.15$

The design current is calculated as: $I=I_{sc}\times N_p\times 1.25$

where:

• $V_{oc}\text{ is the module open circuit voltage}$
• $I_{sc}\text{ is the module short circuit current}$
• $N_s\text{ is the number of modules per string (in series)}$
• $N_p\text{ is the number of strings in parallel}$