diff options
Diffstat (limited to '503/CH8/EX8.22/ch8_22.sci')
| -rwxr-xr-x | 503/CH8/EX8.22/ch8_22.sci | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/503/CH8/EX8.22/ch8_22.sci b/503/CH8/EX8.22/ch8_22.sci new file mode 100755 index 000000000..c3b0c4c13 --- /dev/null +++ b/503/CH8/EX8.22/ch8_22.sci @@ -0,0 +1,21 @@ +//to find armature current,power factor and power ip
+
+clc;
+j=sqrt(-1);
+Vt=3300/sqrt(3);
+Ef=4270/sqrt(3);
+Pein=600000/3;
+Zs=.8+j*5.5;
+a=90-atand(imag(Zs)/real(Zs));
+dl=asind((Pein+real(Zs)*(Ef/abs(Zs))^2)/((Vt*Ef/abs(Zs))))-a;
+disp(dl,'power angle');
+b=Vt-Ef*complex(cosd(-dl),sind(-dl));
+Ia=b/Zs;
+disp(abs(Ia),'armature current(A)');
+phi=atand(imag(Ia)/real(Ia));
+disp(cosd(phi),'pf');
+
+Peinn=sqrt(3)*3300*abs(Ia)*cosd(phi);
+disp(Peinn,'power ip(W)');
+loss=Peinn-Pein*3;
+disp(loss,'ohmic loss(W)');
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