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Diffstat (limited to '371/CH11/EX11.7/11_7.sci')
| -rwxr-xr-x | 371/CH11/EX11.7/11_7.sci | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/371/CH11/EX11.7/11_7.sci b/371/CH11/EX11.7/11_7.sci new file mode 100755 index 000000000..18d68f7c0 --- /dev/null +++ b/371/CH11/EX11.7/11_7.sci @@ -0,0 +1,20 @@ +//Control of DC motors//
+//Example 11.7//
+N1=500;
+N2=400;
+Eb1=410;
+Eb2=Eb1*N2/N1;
+printf('Eb2=%fvolts',Eb2);
+V=440;//operating voltage of dc motor in volts//
+P=100;//input power of dc motor in KW//
+Ia=P*1000/V;
+printf('\nIa=%fAmps',Ia);
+Ra=(V-Eb1)/Ia;
+printf('\nRa=%fohms',Ra);
+E2=415;
+Edca=Eb2+(0.75*Ia*Ra);//terminal voltage of dc motor at 500 rpm and 75% load//
+printf('\nTerminal voltage of dc motor at 500 rpm and 75percent load=Edca=%fvolts',Edca);
+C=Edca/(1.35*E2);//cosine of the triggering angle of the converter//
+printf('\nCosine of the triggering angle of the converter=C2=%f',C);
+A=acos(C)*180/%pi;//triggering angle of the converter in degrees//
+printf('\ntriggering angle of the converter A=%fdegrees',A);
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