diff options
Diffstat (limited to '3760/CH5/EX5.20')
-rw-r--r-- | 3760/CH5/EX5.20/Ex5_20.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/3760/CH5/EX5.20/Ex5_20.sce b/3760/CH5/EX5.20/Ex5_20.sce new file mode 100644 index 000000000..15edb3c24 --- /dev/null +++ b/3760/CH5/EX5.20/Ex5_20.sce @@ -0,0 +1,18 @@ +clc;
+p=20*10^6; // VA rating of alternator
+z=5; // impedance of alternator
+r=0.5; // resistance of alternator
+v=11000; // voltage rating of bus bars
+e=12000; // excitation voltage
+vt=v/sqrt(3); // alternator per phase voltage
+Ef=e/sqrt(3); // alternator per phase excitation voltage
+pmax=round((((Ef*vt)/z)-((vt^2*r)/z^2))/10^6);
+P=round(pmax*3);
+printf('Per phase maximum output power from alternator is %f MW\n',pmax);
+printf('Total maximum output power from alternator is %f MW\n',P);
+disp('case b');
+pf=r/z; // power factor
+ia=round((sqrt(vt^2+Ef^2-2*Ef*vt*pf))/z); // armature current
+printf('Armature current is %f A\n',ia);
+pf=(Ef*z-vt*r)/(ia*z^2);
+printf('Power factor under maximum power condition is %f leading',pf);
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