PV simulation of solar system

Hi everyone! I am writing a Matlab program for simulation of PV. My aim to plot I-V and P-V characteristics of the curve.

When I run the simulation in a matlab script file. I keep encountering an error and it says

msx60(Va, Suns, TaC) * Undefined function or variable 'Va' *

The following program is part of the code I used.

function Ia = msx60( Va, Suns, TaC )

% msx60.m model for the MSX-60 solar array

% current given voltage, illumination and temperature % Ia= msx60(Va,G,T) = array voltage

% Ia,Va = array current voltage % G = num of Suns (1 Sun = 1000 W/m^2)

% T = Temp in Deg C

k = 1.38e-23; %Boltzman's Constant

q = 1.60e-19; %Charge on an electron

Answer 1

[shrik kader]

ok, where is the rest of the code first of all?. and yes , it seems that the variable Va is undefined .