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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/CH9/EX9.12/ch9_12.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/CH9/EX9.12/ch9_12.sci')
| -rwxr-xr-x | 503/CH9/EX9.12/ch9_12.sci | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/503/CH9/EX9.12/ch9_12.sci b/503/CH9/EX9.12/ch9_12.sci new file mode 100755 index 000000000..92d922b75 --- /dev/null +++ b/503/CH9/EX9.12/ch9_12.sci @@ -0,0 +1,26 @@ +//find line current and starting torque with direct switching, stator resistance starting, autotransformer starting, star delta starting, autotransformer ratio give 1 pu
+
+clc;
+//I_s/I_fl=6;
+s_fl=0.05;
+disp('by direct switching');
+Is=6;disp(Is,'line current(pu)');
+T=Is^2*s_fl;disp(T,'torque(pu)');
+
+disp('by stator resistance starting');
+Is=2;disp(Is,'line current(pu)'); //given
+T=Is^2*s_fl;disp(T,'torque(pu)');
+
+disp('by autotransformer starting');
+x=2/6;
+Is_motor=2;
+Is=Is_motor*x;disp(Is,'line current(pu)');
+T=Is^2*s_fl;disp(T,'torque(pu)');
+
+disp('by star delta starting');
+Is=(1/3)*6;disp(Is,'line current(pu)');
+T=Is^2*s_fl*3;disp(T,'torque(pu)');
+
+disp('by autotransformer starting');
+Ts=1;
+x=sqrt(Ts/((6^2)*s_fl));disp(x,'x');
\ No newline at end of file |