while executing a m-file it shows busy?
1 view (last 30 days)
Show older comments
AKSHIT SAMADHIYA
on 3 Nov 2016
Answered: Emircan Han
on 30 Jun 2017
I am working on PV Cell modelling. I came across a matlab code and while running the m file it shows busy.
clc;
clear all;
T=25+273;
Tn=25+273;
dT=T-Tn;
G=800;
Gn=1000;
Imp=7.61;
Vmp=26.3;
Iscn=8.21;
Vocn=32.9;
Pmaxe=Vmp*Imp;
Kv=-0.1230;
Ki=0.0032;
Ns=54;
k=1.38065e-23;
q=1.602e-19;
a=1.3;
Vtn=k*Tn/q;
Vt=k*T/q;
Rpmin=(Vmp/(Iscn-Imp))-((Vocn-Vmp)/Imp);
Rp=Rpmin;
Rs=0;
Io=(Iscn+(Ki*dT))/((exp((Vocn+(Kv*dT))/a*Vt))-1);
P=(0);
err=inf;
tol=0.01;
while(err>tol)
Ipvn=(((Rs+Rp)/Rp))*Iscn;
Ipv=(Ipvn+(Ki*dT))*(G/Gn);
Isc=(Iscn+(Ki*dT))*(G/Gn);
Rs=Rs+0.01;
b=exp(((Vmp+(Imp*Rs))*q)/(Ns*a*k*T));
Rp=(Vmp+(Imp*Rs))/((Vmp*Ipv)-(Vmp*Io*b)+(Vmp*Io)-Pmaxe);
clear V
clear I
V=0:0.1:50;
I=zeros(1,size(V,2));
g=zeros(1,size(V,2));
glin=zeros(1,size(V,2));
I_=zeros(1,size(V,2));
for j=1:size(V,2)
g(j)=Ipv-(Io*exp(V(j)+(Rs*I(j)))/(Vt*a*Ns))+Io-((V(j)+(Rs*I(j)))/Rp)-I(j);
while(abs(g(j))>0.001)
g(j)=Ipv-(Io*exp(V(j)+(Rs*I(j)))/(Vt*a*Ns))+Io-((V(j)+(Rs*I(j)))/Rp)-I(j);
glin(j)=-(Io*exp((V(j)+(Rs*I(j)))/(Vt*a*Ns))*Rs/(Vt*a*Ns))-(Rs/Rp)-1;
I_(j)=I(j)-(g(j)/glin(j));
I(j)=I_(j);
end
end
P=(Ipv-(Io*exp((V+(I.*Rs))/(Vt*a*Ns)))+Io-((V+(I.*Rs))/Rp)).*V;
Pmax=max(P);
err=(Pmax-Pmaxe);
end
fprintf('Model info:-\n');
fprintf('Rp=%f',Rp);
fprintf('Rs=%f',Rs);
fprintf('Pmax=%f',Pmax);
1 Comment
Accepted Answer
Anna Trofimova
on 3 Nov 2016
It is getting in stuck while performing while loop inside for loop ( while(abs(g(j))>0.001)). Check your code for mistakes, because there are situations when (abs(g(j))>0.001) cannot be false.
2 Comments
Steven Lord
on 3 Nov 2016
Add a counter that you increment each time through your while loop. Include in your while condition both a check on the value of g(j) and a check that the counter is not too large. After the while loop, if the counter is too large you didn't converse and you can handle that case appropriately.
More Answers (1)
See Also
Categories
Find more on Loops and Conditional Statements in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!