Step 2 Short Circuit Current Test

Step 2.1 Calculate fmm i

1. Similar to Step 1 Choose PV Module 

2. fmm i is power de-rate factor due to mismatch (decimal)

3. Take worst case. 

4. Convert to decimal if need

   • fmm i = [ ( Pmax STC - Power tolerance(W) ) / Pmax STC] / 100% 

   • fmm i = [ 100% - Power tolerance(%) ] / 100%

Power tolerance = +0 W 

fmm  i=  [ ( 380-0 ) / 380 ] / 100% = 1

Step 2.3 Calculate fclean

fclean = (100 % - Dirt Loss %) /100 

Dirt loss value is subjective in real life, around 3%-5%

fclean  = 0.96 (Question Provided) 

Step 2.5 Calculate Isc array stc

Isc array = Isc STC X Np

Isc array stc Array short circuit current of the PV module at STC (V) 

• Np is Number of parallel-connected modules, exp: 

• Two modules in series, Np = 1

• Two modules in parallel, Np = 2

Step 2.9 Calculate Isc array expected

Isc array expected Expected short circuit current of the PV module (V) 

Tmod Step 2.7 PV Module temperature (°C)

Gi ref Step 2.6 Solar irradiance (Wm⁻²)

Assume one module, Tmod  = 53.1 °C, solar irradiance = 549 Wm⁻²

Table Template