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Diffstat (limited to '3811/CH11/EX11.3')
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| -rw-r--r-- | 3811/CH11/EX11.3/Ex11_3.sce | 17 |
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diff --git a/3811/CH11/EX11.3/Ex11_3.jpg b/3811/CH11/EX11.3/Ex11_3.jpg Binary files differnew file mode 100644 index 000000000..be0943773 --- /dev/null +++ b/3811/CH11/EX11.3/Ex11_3.jpg diff --git a/3811/CH11/EX11.3/Ex11_3.sce b/3811/CH11/EX11.3/Ex11_3.sce new file mode 100644 index 000000000..77c19215a --- /dev/null +++ b/3811/CH11/EX11.3/Ex11_3.sce @@ -0,0 +1,17 @@ +//Book Name: Fundamentals of electrical drives by Mohamad A. El- Sharkawi
+//chapter 11
+//example 11.3
+//edition 1
+//publishing place:Thomson Learning
+clc;
+clear;
+Ra=2;//armature resistance in ohm
+Tst1=2;//limited starting time in sec
+Kphi=3;//field constant in V sec
+Jm=1;//motor moment of inertia in Nm
+Jl=5;//load moment of inertia in Nm
+tau=((Jl+Jm)*Ra)/Kphi^(2);
+Tst=3*tau;//starting time of the motor based on given data in sec
+Jeq=(Tst1*(Kphi^(2)))/(3*Ra);
+gr=sqrt((Jeq-Jm)/Jl);//gear ratio n1/n2
+mprintf("To achieve the desired starting current the gear ratio n1/n2 must be between %f",gr)
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