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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 /3811/CH11/EX11.8/Ex11_8.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3811/CH11/EX11.8/Ex11_8.sce')
| -rw-r--r-- | 3811/CH11/EX11.8/Ex11_8.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/3811/CH11/EX11.8/Ex11_8.sce b/3811/CH11/EX11.8/Ex11_8.sce new file mode 100644 index 000000000..036beb4fd --- /dev/null +++ b/3811/CH11/EX11.8/Ex11_8.sce @@ -0,0 +1,27 @@ +//Book Name: Fundamentals of electrical drives by Mohamad A. El- Sharkawi
+//chapter 11
+//example 11.8
+//edition 1
+//publishing place:Thomson Learning
+clc;
+clear;
+V=480;//terminal voltage in volt
+n=1120;//related full load speed of the motor in rpm
+R1=1;//stator resistance in ohm
+R2=1;//rotor resistance referred to stator in ohm
+X1=5;//equivalent winding resistance in ohm
+J=4;//inertia of the motor in NM sec^2
+ns=1200;//nearest synchronous speed of the motor in rpm
+tbr=15;//time taken to stop the motor in sec
+s1=2;
+s2=1;
+rps=ns/60;
+omegas=(2*%pi*rps);
+smax=R2/sqrt(R1^(2)+X1^(2));
+Tmax=V^(2)/(2*omegas*(R1+sqrt(R1^(2)+X1^(2))));
+tau=(2*tbr)/(((s1^(2)-s2^(2))/(2*smax))+(smax*log(s1/s2))+(2*smax*(s1-s2)));
+Tmax1=(J*omegas)/tau;
+Vbr=sqrt(Tmax1/Tmax)*V;
+mprintf("The magnitude of motor voltage during braking is %f volt",Vbr)
+//The answer provided in the textbook is wrong
+
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