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//Example 9_18 page no:375
clc;
Vrymag=400;
Vryang=0;
Vybmag=400;
Vybang=-120;
Vbrmag=400;
Vbrang=-240;
Z1mag=20;
Z1ang=30;
Z1real=Z1mag*cosd(Z1ang);
Z1img=Z1mag*sind(Z1ang);
Z2mag=40;
Z2ang=60;
Z2real=Z2mag*cosd(Z2ang);
Z2img=Z2mag*sind(Z2ang);
Z3mag=10;
Z3ang=-90;
Z3real=Z3mag*cosd(Z3ang);
Z3img=Z3mag*sind(Z3ang);
//calculating the line current
Irmag=Vrymag/Z1mag;
Irang=Vryang-Z1ang;
Irreal=Irmag*cosd(Irang);
Irimg=Irmag*sind(Irang);
Iymag=Vybmag/Z2mag;
Iyang=Vybang-Z2ang;
Iyreal=Iymag*cosd(Iyang);
Iyimg=Iymag*sind(Iyang);
Ibmag=Vbrmag/Z3mag;
Ibang=Vbrang-Z3ang;
Ibreal=Ibmag*cosd(Ibang);
Ibimg=Ibmag*sind(Ibang);
Ir=Irreal+(%i*Irimg);
Iy=Iyreal+(%i*Iyimg);
Ib=Ibreal+(%i*Ibimg);
disp(Ir,"the phase current Ir is (in A)");
disp(Iy,"the phase current Iy is (in A)");
disp(Ib,"the phase current Ib is (in A)");
//calculating the line current
I1real=Irreal-Ibreal;
I1img=Irimg-Ibimg;
I2real=Iyreal-Irreal;
I2img=Iyimg-Irimg;
I3real=Ibreal-Iyreal;
I3img=Ibimg-Iyimg;
I1=I1real+(%i*I1img);
I2=I2real+(%i*I2img);
I3=I3real+(%i*I3img);
disp(I1,"the phase current Ir is (in A)");
disp(I2,"the phase current Iy is (in A)");
disp(I3,"the phase current Ib is (in A)");
//calculating the total power
Pr=Irmag^2*Z1real;
Py=Iymag^2*Z2real;
Pb=Ibmag^2*Z3real;
P=Pr+Py+Pb;
disp(P,"total power in the load is (in W)");
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