MATLAB: I can’t do iterations with “while loop”….No puedo hacer iteraciones con WHILE

iterationwhile loop

Hi good afternoon , sorry , but as I have the following code that I've been doing , but I can not do iterations . Everything is correct , the equations give me the results I want, but must meet as many iterations as possible until the result of " increq = 0.001" . In each iteration the values of v2 , s2 , s3 , q20 ; They should change as follows: v2 = v21 , s2 = s21 , s3 = s31 , q20 = q21 . if you can help me please . I'm desperate.
    clc
      disp ('===========================================')
      disp ('Modelado de sistemas electricos de potencia')
      disp ('Unidad 2: Flujo de potencias; 3 nodos')
      disp ('===========================================')
      z12=input('Coloque impedancia de linea 1-2 ====> ');
      z13=input('Coloque impedancia de linea 1-3 ====> ');
      z23=input('Coloque impedancia de linea 2-3 ====> ');
      y12=-(z12)^-1;
      y13=-(z13)^-1;
      y23=-(z23)^-1;
      disp ('===========================================')
    B11=y12+y13;,B12=-y12;,B13=-y13;
    B21=-y12;,B22=y12+y23;,B23=-y23;
    B31=-y13;,B32=-y23;,B33=y13+y23;
    matriz=[B11 B12 B13;B21 B22 B23;B31 B32 B33]
    disp ('¿EN QUE BUS SE ENCUENTRA EL CONDENSADOR? 1, 2 o 3')
    bus=input(' ')
    if bus == 1
        ybus=-[B22 B23;B32 B33]
        elseif bus == 2
            ybus=-[B11 B13;B31 B33]
        else bus == 3
            ybus=-[B11 B12;B21 B22]
        end
    ybusinversa=inv(ybus)
    %ITERACIONES%
    disp('===================================')
    disp ('Iteraciones')
    disp('===================================')
    p20=input ('ingrese la potencia "P" de la carga (recuerde que las cargas se representan con signo negativo)===> ');
    q20=input ('ingrese la potencia "Q" de la carga (recuerde que las cargas de representan con signo negativo)===> ');
    p30=input ('ingrese la potencia "P" del generador====> ');
        v1=1;, s1=0;
    v2=1;, s2=0;
    v3=1;, s3=0;
              %CALCULANDO POTENCIA ACTIVA P%
    p21=v2*((B21*v1*sin(s2-s1))+(B23*v3*sin(s2-s3)));
    p31=v3*((B31*v1*sin(s3-s1))+(B32*v2*sin(s3-s2)));
              %CALCULAR INCREMENTO DE P%
    incp2v2=p20-p21; 
    incp3v3=p30-p31;
              %CALCULAR INCREMENTO DE  Q%
          matrizincp=[incp2v2;incp3v3];
    incdeq=(ybusinversa)*(matrizincp);
                    %s21 y s31%
    des2=[incdeq];
    s21=des2(1:2:end);
    s31=des2(2:2:end);
    %CALCULO DE Q%
    singrad1=sin(acos(s21-s1));
    singrad2=sin(acos(s21-s31));
    q21=((-B22*(v2^2))-((v2*(B21*v1*(singrad1)))+(B23*v3*(((singrad2))))));
    %INCREMENTO DE Q%
    increq=(q20-q21)/v2;
    %INCREMENTO DE V2%
    increv2=-(1/B22)*(increq); 
    %CALCULO V2%
    v21=v2+increv2;
    %FIN%

Best Answer

% initialise values here
while increq > 0.001
  % calculations here
  % update values here, including increq!
end
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