Why am I getting the error "Too many output arguments"?

Question

Aftab Mohammed am 3 Mär. 2024

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Direkter Link zu dieser Frage

https://de.mathworks.com/matlabcentral/answers/2089771-why-am-i-getting-the-error-too-many-output-arguments

Beantwortet: Walter Roberson am 3 Mär. 2024

Akzeptierte Antwort: the cyclist

In MATLAB Online öffnen

%initialise paramteres

A = 1.7;

k = 1.380658*(10^-23);

q = 1.6 * (10^-19);

Eg = 1.1;

Ior = 19.9693*(10^-6);

Iscr = 3.3;

ki = 1.7 * (10^-3);

ns = 40;

np = 2;

Rs = 5*(10^-5);

Rp = 5*(10^5);

Tr = 301.18;

Ta = 25;

%array error = 1;

amb = [25 40 60];

irr = [0.3 0.5 1];

%Evaluate

hold on

for i=1:3

Ipv = [];

Vpv = [];

Ppv = [];

G= irr(i);

Tc = Ta + (0.2*G) + 273.18;

Isc = (Iscr + ki*(Tc-Tr))*G;

Is = Ior * ((Tc/Tr)^3) * exp(q*Eg*(1/Tr-1/Tc)/(k*A));

I = Isc;

V = 0;

while I>0

while error>0.0001

f1= I-(np*Isc)+(np*Is)*(exp(q*((V/ns)+(I*Rs/np))/(A*k*Tc))-1)+(((V*np/ns)+(I*Rs))/(Rp));

df1= 1+(Rs/Rp)+((q*Is*Rs)/(A*k*Tc))*(exp(q*((V/ns)+(I*Rs/np))/(A*k*Tc)));

I= I-(f1/df1);

error=abs(f1/df1);

end

Ipv= [Ipv I];

Vpv = [Vpv V];

Ppv= [Ppv I*V];

V = V+0.1;

error = 1;

end

plot(Vpv, Ipv);

% plot(Vpv, Ppv);

end

Error using error
Too many output arguments.

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Answer 1

the cyclist am 3 Mär. 2024

1
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Direkter Link zu dieser Antwort

https://de.mathworks.com/matlabcentral/answers/2089771-why-am-i-getting-the-error-too-many-output-arguments#answer_1420261

In MATLAB Online öffnen

You are confusing MATLAB by using error (a MATLAB function) as a variable name.

I changed that variable name to errorVal, and initialized it to -Inf.

%initialise paramteres 
A = 1.7;               
k = 1.380658*(10^-23);  
q = 1.6 * (10^-19);     
Eg = 1.1;               
Ior = 19.9693*(10^-6);  
Iscr = 3.3;              
ki = 1.7 * (10^-3);     
ns = 40;                
np = 2;                 
Rs = 5*(10^-5);         
Rp = 5*(10^5);         
Tr = 301.18;            
Ta = 25;                
%array error = 1;
amb = [25 40 60];
irr = [0.3 0.5 1]; 
%Evaluate 
errorVal = -Inf;
hold on 
for i=1:3
    Ipv = [];
    Vpv = [];
    Ppv = [];
    
    G= irr(i);                  
    Tc = Ta + (0.2*G) + 273.18;                           
    Isc = (Iscr + ki*(Tc-Tr))*G;            
    Is = Ior * ((Tc/Tr)^3) * exp(q*Eg*(1/Tr-1/Tc)/(k*A)); 
    I = Isc;                                       
    V = 0;                                     
    
    while I>0 
        while errorVal>0.0001
            f1= I-(np*Isc)+(np*Is)*(exp(q*((V/ns)+(I*Rs/np))/(A*k*Tc))-1)+(((V*np/ns)+(I*Rs))/(Rp));
            df1= 1+(Rs/Rp)+((q*Is*Rs)/(A*k*Tc))*(exp(q*((V/ns)+(I*Rs/np))/(A*k*Tc)));
            I= I-(f1/df1);
            errorVal=abs(f1/df1);
        end
        
        Ipv= [Ipv I];
        Vpv = [Vpv V];
        Ppv= [Ppv I*V];
        V = V+0.1;
        errorVal = 1; 
    end 
    
    
    plot(Vpv, Ipv);
    
    
    % plot(Vpv, Ppv);
    
end