diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2642/CH8/EX8.6 | |
| 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 '2642/CH8/EX8.6')
| -rwxr-xr-x | 2642/CH8/EX8.6/Ex8_6.sce | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/2642/CH8/EX8.6/Ex8_6.sce b/2642/CH8/EX8.6/Ex8_6.sce new file mode 100755 index 000000000..6b283da42 --- /dev/null +++ b/2642/CH8/EX8.6/Ex8_6.sce @@ -0,0 +1,34 @@ +// FUNDAMENTALS OF ELECTICAL MACHINES
+// M.A.SALAM
+// NAROSA PUBLISHING HOUSE
+// SECOND EDITION
+
+// Chapter 8 : STARTING, CONTROL AND TESTING OF AN INDUCTION MOTOR
+// Example : 8.5
+
+clc;clear; // clears the console and command history
+
+// Given data
+V = 210 // supply voltage in V
+f = 50 // supply frequency in Hz
+P = 4 // number of poles
+P_0 = 400 // i/p power in W
+I_0 = 1.2 // line current in A
+V_0 = 210 // line voltage
+P_fw = 150 // total friction and windage losses in W
+R = 2.2 // stator resistance between two terminals in ohm
+
+// caclulations
+R_1 = R/2 // per phase stator resistance in ohm
+P_scu = 3*I_0^2*R_1 // copper loss in W
+P_core = P_0-P_fw-P_scu // stator core loss in W
+R_0 = (V_0/sqrt(3))^2/(P_core/3) // no-load resistance in ohm
+// alternate approach
+phi_0 = acosd(P_core/(sqrt(3)*V_0*I_0)) // power factor angle
+X_0 = (V_0/sqrt(3))/(I_0*sind(phi_0)) // magnetizing reactance per phase in ohm
+
+// display the result
+disp("Example 8.6 solution");
+printf(" \n No-load resistance \n R_0 = %.1f ohm \n", R_0 );
+printf(" \n Magnetizing reactance per phase \n X_0 = %.0f ohm \n", X_0 );
+
|