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Diffstat (limited to '3640/CH1/EX1.4')
| -rw-r--r-- | 3640/CH1/EX1.4/Ex1_4.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/3640/CH1/EX1.4/Ex1_4.sce b/3640/CH1/EX1.4/Ex1_4.sce new file mode 100644 index 000000000..8d7db81b9 --- /dev/null +++ b/3640/CH1/EX1.4/Ex1_4.sce @@ -0,0 +1,21 @@ +clc
+V1=240 //voltage applied to a winding of transformer(three phase) in volts
+f1=60 //initial applied frequency in Hz
+f2=30 //reduced frequency in Hz
+Phe1=400 //core loss in watts at f1 frequency
+Phe2=169 //core losses in watts at f2 frequency
+mprintf("V2=%dV\n",(f2*V1)/f1)//voltage at 30 Hz frequency
+mprintf("Ph+e/f=Ch+Ce*f\n")//equation for claculating hysteresis and eddy current loss coefficients
+a=[1 f1;1 f2] //left hand side matix for the equation above
+b=[Phe1/f1;Phe2/f2] //right hand side matrix for the equation above
+c=inv(a)*b
+Ch=c(1,:)//hysteresis loss coefficient in W/Hz
+Ce=c(2,:)//eddy current loss coefficient in W/(Hz*Hz)
+mprintf("Ph=%fW\n",Ch*f1)//ans may vary due to roundoff error //hysteresis loss in watts at 60 Hz
+mprintf("Pe=%fW\n",Ce*f1*f1)//ans may vary due to roundoff error //eddy current loss at 60 Hz in watts
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