Hello;
I've tried to writing matlab code for determining global peaks for shading pv panel and set the output as maximum power, region and short circuit current to be used in next block. My inputs are PV voltage and current from PV block, both are 3000x1 double sizes.
However, when I run the program it shows the error of
_Simulink does not have enough information to determine output sizes for this block. If you think the errors below are inaccurate, try specifying types for the block inputs and/or sizes for the block output_ s.
I expected the outputs to be single number.
The code is below;
function [Region,Isc_step,P_Gmppt] = initial(V1, I1)
P1= V1.*I1;
[P_Lmppt,V_Lmppt] = findpeaks(P1,V1);
P_Gmppt = max(P_Lmppt);
V_Gmppt_loc = find(P_Gmppt == P_Lmppt);
V_Gmppt = V_Lmppt(V_Gmppt_loc);
P_inv = P_Gmppt - P1;
[P_drop_Lmppt,V_drop_Lmppt] =findpeaks(P_inv,V1);
V_drop = max(V_drop_Lmppt);
V_drop_loc = find(V1 == V_drop);
P_drop = P_inv(V_drop_loc);
I_shade = I1(V_drop_loc:end,:);
V_shade = V1(V_drop_loc:end,:);
Isc_step = I_shade(1);
if V_Gmppt > V_drop
Region = 1;
else
Region = 2;
end
end
The figure for simulink is
Any suggestions for solving this? Many thanks in Advanced
