diff options
Diffstat (limited to '3760/CH5/EX5.17/Ex5_17.sce')
-rw-r--r-- | 3760/CH5/EX5.17/Ex5_17.sce | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/3760/CH5/EX5.17/Ex5_17.sce b/3760/CH5/EX5.17/Ex5_17.sce new file mode 100644 index 000000000..b3e20f88b --- /dev/null +++ b/3760/CH5/EX5.17/Ex5_17.sce @@ -0,0 +1,17 @@ +clc;
+p=40*10^6; // rated power of turbogenerator
+v=11000; // rated voltage of generator
+xs=0.8; // p.u. synchronous reactance
+ra=0.5; // series reactance of infinite bus
+vt=v/sqrt(3); // rated per phase voltage
+disp('case b');
+ia=p/(v*sqrt(3)); // armature current
+printf('Armature current is %f A\n',ia);
+xs=xs*(vt/ia); // xs in ohms
+vd=ia*ra; // voltage drop in series resistance
+pf=cosd(asind((vd/2)/vt));
+printf('Alternate power factor is %f lagging\n',pf);
+disp('case c');
+Ef=sqrt((vt*pf)^2+((vd/2)+(ia*xs))^2);
+printf('Excitation EMF line to neutral is %f V\n',Ef);
+printf('Excitation EMF line to line is %f V\n',sqrt(3)*Ef);
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