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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /503/CH8/EX8.13/ch8_13.sci | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '503/CH8/EX8.13/ch8_13.sci')
| -rwxr-xr-x | 503/CH8/EX8.13/ch8_13.sci | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/503/CH8/EX8.13/ch8_13.sci b/503/CH8/EX8.13/ch8_13.sci new file mode 100755 index 000000000..ab3fdbb45 --- /dev/null +++ b/503/CH8/EX8.13/ch8_13.sci @@ -0,0 +1,33 @@ +//to determine excitation emf, torque angle,stator current, pf, max power, kVAR delivered
+
+clc;
+j=sqrt(-1);
+P=10000;
+V=400;
+Ia=P/(sqrt(3)*V);
+pf=.8;
+phi=acosd(pf);
+Iaa=Ia*complex(cosd(-phi),sind(-phi));
+Vt=V/sqrt(3);
+X=16;
+Ef=Vt+j*X*Iaa;
+disp(abs(Ef),'excitation emf(V)');
+dl=atand(imag(Ef)/real(Ef));
+disp(dl,'torque angle');
+
+Pe=P*pf;
+Eff=abs(Ef)*1.2;
+dl=(Pe/3)*X/(Eff*Vt);
+ta=asind(dl);
+disp(ta,'torque angle');
+Ia=(Eff*complex(cosd(ta),sind(ta))-Vt)/(j*X);
+disp(abs(Ia),'stator current(A)');
+disp(cosd(-atand(imag(Ia)/real(Ia))),'pf');
+
+Ef=413;
+Pemax=Ef*Vt/X;
+Ia=(Ef*complex(cosd(90),sind(90))-Vt)/(j*X);
+disp(abs(Ia),'stator current(A)');
+disp(cosd(-atand(imag(Ia)/real(Ia))),'pf');
+
+Qe=(imag(Ia)/real(Ia))*Pe;disp(Qe,'kVar delivered');
\ No newline at end of file |