diff options
| 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/EX11.9/Ex11_9.sce | |
| 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 '3811/CH11/EX11.9/Ex11_9.sce')
| -rw-r--r-- | 3811/CH11/EX11.9/Ex11_9.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/3811/CH11/EX11.9/Ex11_9.sce b/3811/CH11/EX11.9/Ex11_9.sce new file mode 100644 index 000000000..3a1d44358 --- /dev/null +++ b/3811/CH11/EX11.9/Ex11_9.sce @@ -0,0 +1,24 @@ +//Book Name: Fundamentals of electrical drives by Mohamad A. El- Sharkawi
+//chapter 11
+//example 11.9
+//edition 1
+//publisher and place:Nelson Engineering
+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
+Xeq=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
+K=1.196;
+rps=ns/60;
+omegas=(2*%pi*rps);
+s1=2;
+s2=1;
+Tmax=V^(2)/(2*omegas*(R1+sqrt(R1^(2)+Xeq^(2))));
+tau=(J*omegas)/Tmax;
+smax=sqrt((s2^2-s1^2)/(((-log(s1/s2))-(2*(s1-s2)))*2));//the equation is obtained by differentiating tbr with respect to smax
+Radd=(smax*sqrt(R1^2+Xeq^2))-R2;//equation to find the Radd
+mprintf("\nThe value of braking resistance to minimize the braking time is %f ohm",Radd)
|