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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3760/CH5/EX5.36/Ex5_36.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3760/CH5/EX5.36/Ex5_36.sce')
| -rw-r--r-- | 3760/CH5/EX5.36/Ex5_36.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/3760/CH5/EX5.36/Ex5_36.sce b/3760/CH5/EX5.36/Ex5_36.sce new file mode 100644 index 000000000..1e3fe2e6a --- /dev/null +++ b/3760/CH5/EX5.36/Ex5_36.sce @@ -0,0 +1,27 @@ +clc;
+v=6600; // rated voltage of motor
+p=8; // number of poles
+f=50; // frequency of motor
+xs=20; // percentage synchronous reactance
+P=3000; // rated power of motor
+m=3; // number of phases
+vt=v/sqrt(3); // per phase rated voltage
+ia=(P*1000)/(sqrt(3)*v); // per phase armature current
+xs=(xs*vt)/(100*ia); // synchronous reactance in ohm
+disp('case a');
+de=0; // at no load load angle=0 and excitation voltage=per phase rated voltage
+ps=ceil(((m*vt^2*cosd(de)*%pi*p)/(xs*360))/1000);
+printf('Synchronozing power per mechanical degree is %f KW\n',ps);
+T=((ps*1000*p*60)/(2*%pi*120*f))/1000;
+printf('Corresponding synchronizing torque is %f KN-m\n',T);
+disp('case b');
+pf=0.8; // lagging power factor
+Ef=vt+%i*ia*(pf-sqrt(1-pf^2)*%i)*xs; // Excitation EMF
+de=atand(imag(Ef),real(Ef));
+ps=((m*vt*abs(Ef)*cosd(de)*%pi*p)/(xs*360))/1000;
+printf('Synchronozing power per mechanical degree is %f KW\n',ceil(ps));
+T=((ps*1000*p*60)/(2*%pi*120*f))/1000;
+printf('Corresponding synchronizing torque is %f KN-m\n',T);
+
+
+
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