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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 /2231/CH2/EX2.21/Ex_2_21.sce | |
| 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 '2231/CH2/EX2.21/Ex_2_21.sce')
| -rwxr-xr-x | 2231/CH2/EX2.21/Ex_2_21.sce | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/2231/CH2/EX2.21/Ex_2_21.sce b/2231/CH2/EX2.21/Ex_2_21.sce new file mode 100755 index 000000000..2c5a9336f --- /dev/null +++ b/2231/CH2/EX2.21/Ex_2_21.sce @@ -0,0 +1,36 @@ +//Example 2_21
+clc;
+clear;close;
+
+//Given data:
+Vs=400;//V
+R=10;//ohm
+f=50;//Hz
+
+//Solution :
+Vm=Vs*sqrt(2)/sqrt(3);//V
+Vdc_max=3*sqrt(3)*Vm/2/%pi*(1+cosd(0));//V
+//Vdc should be Vdc_max/2
+Vdc=Vdc_max*50/100;//V
+alfa=acosd(1-Vdc/(3*sqrt(3)*Vm/2/%pi));//degree
+disp(alfa,"Firing angle(degree)");
+Idc=Vdc/R;//A
+disp(Idc,"Average output current(A)");
+Vrms=sqrt(3)*Vm*sqrt(3/4/%pi*(%pi-%pi/2+sin(%pi)/2));//V
+Irms=Vrms/R;//A
+disp(Vrms,"RMS output voltage(V)");
+disp(Irms,"RMS output current(A)");
+Iavg_thy=Idc/3;//A
+disp(Iavg_thy,"Average thyristor current(A)");
+Irms_thy=Irms/sqrt(3);//A
+disp(Irms_thy,"RMS thyristor current(A)");
+Eff=Vdc*Idc/(Vrms*Irms)*100;//%
+disp(Eff,"Rectification Efficiency(%)");
+Iline_rms=Irms*sqrt(120/180);//A
+VA_in=3*Vs*Iline_rms/sqrt(3);//VA
+TUF=Vdc*Idc/VA_in;
+disp(TUF,"Transformer utilisation factor");
+Pin_active=Irms^2*R;//W
+pf_in=Pin_active/VA_in;//lagging
+disp(pf_in,"Input power factor(lagging)");
+//Answer in the book is wrong for some part.
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