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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /1319/CH5/EX5.19 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '1319/CH5/EX5.19')
| -rw-r--r-- | 1319/CH5/EX5.19/5_19.sce | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/1319/CH5/EX5.19/5_19.sce b/1319/CH5/EX5.19/5_19.sce new file mode 100644 index 000000000..839c9fa8c --- /dev/null +++ b/1319/CH5/EX5.19/5_19.sce @@ -0,0 +1,35 @@ +// To determine the load for max efficiency at two power factors
+
+clc;
+clear;
+
+P=100*(10^3); // Power Input
+
+E1=1000;
+E2=10000;
+
+Pil=1200;
+
+I2=P/E2; // Full load current on the HV side
+
+Isc=6; // Current for 500W copper loss in HV winding
+Psc=500; // Copper Loss for 6A in HV winding
+
+Pc=((I2/Isc)^2)*Psc; // Copper loss at full load.
+
+Pmax=sqrt(Pil/Pc)*P; // Is a factor of square root of the ratio of Iron loss and Copper loss at full load.
+
+deff('x=eff(y,z)','x=(P*y*z)*100/((P*y*z)+Pil+(Pc*(z^2)))')// Function to find the eifficiency for a given power factor(y) and load(z).
+
+printf('a) The Efficiency at various loads for unity power factor are as follows. \n')
+printf('i) At 25 percent load = %f percent \n',eff(1,0.25))
+printf('ii) At 50 percent load = %g percent \n',eff(1,0.5))
+printf('iii) At 100 percent load = %g percent \n',eff(1,1))
+
+printf('\n b) The Efficiency at various loads for 0.8 power factor are as follows. \n')
+printf('i) At 25 percent load = %g percent \n',eff(0.8,0.25))
+printf('ii) At 50 percent load = %g percent \n',eff(0.8,0.5))
+printf('iii) At 100 percent load = %g percent \n \n',eff(0.8,1))
+
+printf('The Load at which efficiency is maximum = %g kVA \n',(Pmax/1000))
+
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