I am trying to solve current equations of a pv cell using fsolve butit keeps showing error, can someone pls see what the error in my code is?
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Here is the main code:
clc;
clear all;
Pmpp = 50; %Max Power
Vmpp = 17.98; %Vol at Pmax
Impp = 2.77; %Current at Pmax
Isc= 3; %Short-circuit current
Voc= 22; %Open Circuit Voltage
a= 0.0004; %Temp coeff. of Isc
b= -0.0033; %Temp coeff. of Voc
T = 35;
Tref= 25;
S= 600;
Sref= 1000;
Rs= 0.085;
V= 30;
kref= (1-(Impp/Isc))^(1/(((Vmpp+Rs*Impp)/Voc)-1));
Vo = Voc*(1+ a*log(S/Sref)+ b*(T-Tref));
I= zeros(330,1);
Is = Isc*(1+a*(T-Tref))*(S/Sref);
for i = 1:330
V(i)= (i-1)*0.1;
fhandle = @fun4bisec;
[I]= fsolve(@(I) fhandle(I,V(i)));
y(i)= I;
end
plot(V,y),grid,hold on;
xlabel('Voltage'),ylabel('Current');
The code for function fun4bisec is:
function fval1= fun4bisec(Is,kref, Vo,Rs, Voc)
fval1= I(i) -Is*(1-kref.^((V(i)-Vo+Rs*I(i))/Voc));
end
0 commentaires
Réponse acceptée
Torsten
le 14 Mar 2023
clc;
clear all;
Pmpp = 50; %Max Power
Vmpp = 17.98; %Vol at Pmax
Impp = 2.77; %Current at Pmax
Isc= 3; %Short-circuit current
Voc= 22; %Open Circuit Voltage
a= 0.0004; %Temp coeff. of Isc
b= -0.0033; %Temp coeff. of Voc
T = 35;
Tref= 25;
S= 600;
Sref= 1000;
Rs= 0.085;
V= 30;
kref= (1-(Impp/Isc))^(1/(((Vmpp+Rs*Impp)/Voc)-1));
Vo = Voc*(1+ a*log(S/Sref)+ b*(T-Tref));
y= zeros(330,1);
Is = Isc*(1+a*(T-Tref))*(S/Sref);
I0 = 1.0;
for i = 1:330
V(i)= (i-1)*0.1;
fhandle = @fun4bisec;
[I]= fsolve(@(I) fhandle(I,V(i),kref, Vo,Rs, Voc),I0,optimset('Display','none'));
y(i)= I;
I0 = I;
end
plot(V,y),grid,hold on;
xlabel('Voltage'),ylabel('Current');
function fval1= fun4bisec(Is,V,kref, Vo,Rs, Voc)
fval1= Is -Is*(1-kref.^((V-Vo+Rs*Is)/Voc));
end
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Sources dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!