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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 /1938/CH6/EX6.40 | |
| 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 '1938/CH6/EX6.40')
| -rwxr-xr-x | 1938/CH6/EX6.40/6_40.jpg | bin | 0 -> 41911 bytes | |||
| -rwxr-xr-x | 1938/CH6/EX6.40/6_40.sce | 24 |
2 files changed, 24 insertions, 0 deletions
diff --git a/1938/CH6/EX6.40/6_40.jpg b/1938/CH6/EX6.40/6_40.jpg Binary files differnew file mode 100755 index 000000000..10cfbf523 --- /dev/null +++ b/1938/CH6/EX6.40/6_40.jpg diff --git a/1938/CH6/EX6.40/6_40.sce b/1938/CH6/EX6.40/6_40.sce new file mode 100755 index 000000000..89324be78 --- /dev/null +++ b/1938/CH6/EX6.40/6_40.sce @@ -0,0 +1,24 @@ +clc,clear
+printf('Example 6.40\n\n')
+
+V_L=22000
+V_ph=V_L/sqrt(3)
+power=230*10^6
+phi=acos(1)
+I_FL=power/(sqrt(3)*V_L*cos(phi))
+I_1=I_FL
+X_s=1.2
+
+E_1=sqrt( V_ph^2 + (I_1*X_s)^2 )
+E_2=1.3*E_1
+AC= sqrt( E_2^2-(I_1*X_s)^2 ) -V_ph // because E^2=(V_ph+AC)^2+(I_1*X_s)^2
+I2X_S=AC
+
+I_2cosphi2=I_1 //because phi_2=acos(I_1/I_2) //from ACD
+I_2sinphi2=AC/X_s
+I_2=sqrt( (I_2cosphi2)^2 + (I_2sinphi2)^2 )
+phi2=atan( I_2sinphi2/ I_2cosphi2 )
+new_pf=cos(phi2)
+
+printf('Machine current is %.2f A \n',I_2)
+printf('Power factor is %.4f and lagging',new_pf)
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