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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 /2276/CH10/EX10.8/chapter10_ex8.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 '2276/CH10/EX10.8/chapter10_ex8.sce')
| -rwxr-xr-x | 2276/CH10/EX10.8/chapter10_ex8.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/2276/CH10/EX10.8/chapter10_ex8.sce b/2276/CH10/EX10.8/chapter10_ex8.sce new file mode 100755 index 000000000..cf86ca2f1 --- /dev/null +++ b/2276/CH10/EX10.8/chapter10_ex8.sce @@ -0,0 +1,25 @@ +clc
+clear
+
+//input
+p=4;//number of poles
+f=50;//supply frequency in hertz
+n=3;//number of phases
+w=1440;//speed in rev/min
+sl=1.5;//stator losses in kW
+fl=1.2;//friction losses in kW
+inp=60;//input to motor in kW
+
+//calculations
+N=(inp*f)/(p/2);//synchronous speed in rev/min
+ns=N-w;//slip speed in rev/min
+s=ns/N;//slip in per units
+rinp=inp-sl;//rotor input in kW
+rc=s*rinp;//rotor copper losses in kW
+tr=(rinp*1000)/((N*2*%pi)/60);//rotor torque in newton meter
+rout=rinp-rc;//rotor output in kW
+mout=rout-fl;//motor output in kW
+eff=mout/inp;//efficiency of rotor in per unit
+
+//output
+mprintf('the slip is %3.2f p.u.:the rotor copper loss is %3.2f kW: the total torque is %3.0f Nm and the efficiency is %3.3f p.u.',s,rc,tr,eff)
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