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Diffstat (limited to '1892/CH1/EX1.41/Example1_41.sce')
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1 files changed, 28 insertions, 0 deletions
diff --git a/1892/CH1/EX1.41/Example1_41.sce b/1892/CH1/EX1.41/Example1_41.sce new file mode 100755 index 000000000..08445f242 --- /dev/null +++ b/1892/CH1/EX1.41/Example1_41.sce @@ -0,0 +1,28 @@ +// Example 1.41
+
+clear; clc; close;
+
+format('v',8);
+// Given data
+P=6;//no. of poles
+f=50;//in Hz
+Tsh=150;//in N-m
+fr=1.5;//in Hz
+Tlost=10;//in N-m
+
+//Calculations
+S=fr/f;//slip
+Ns=120*f/P;//in rpm
+N=Ns*(1-S);//in rpm
+RotationalLoss=Tlost*2*%pi*N/60;//in watts
+Pout=Tsh*2*%pi*N/60;//in watts
+Pm=Pout+RotationalLoss;//in watts
+//Formula : P2:Pc:Pm=1:S:1-S
+Pc=Pm*S/(1-S);//in watts
+disp(Pc,"Rotor Copper Loss(Watts) : ");
+P2=Pc/S;//in watts
+disp(P2 ,"Input to the rotor(Watts) : ");
+StatorLoss=700;//in watts(assumed)
+Pin=P2+StatorLoss;//in watts]
+Eff=Pout/Pin*100;//in %
+disp(Eff,"Efficiency in % : ");
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