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Diffstat (limited to '3811/CH5/EX5.4')
| -rw-r--r-- | 3811/CH5/EX5.4/EX5_4.sce | 20 | ||||
| -rw-r--r-- | 3811/CH5/EX5.4/Ex5_4.jpg | bin | 0 -> 19859 bytes |
2 files changed, 20 insertions, 0 deletions
diff --git a/3811/CH5/EX5.4/EX5_4.sce b/3811/CH5/EX5.4/EX5_4.sce new file mode 100644 index 000000000..ffb82f22f --- /dev/null +++ b/3811/CH5/EX5.4/EX5_4.sce @@ -0,0 +1,20 @@ +//Book name: Fundamentals of electrical drives by Mohamad A. El- Sharkawi
+//chapter 5
+//example 5.4
+//edition 1
+//publisher and place:Nelson Engineering
+clc;
+clear;
+R1=3; //stator resistance in ohm
+R2=2; //rotor resistance referred to stator in ohm
+Xeq=10; //equivalent inductive reactance in ohm
+l=10; //voltage reduction in percentage
+V=1; //assumed value of V
+TA=(1*V)^2; //starting torque at the rated voltage
+TB=(0.9*V)^2; //starting torque after 10% voltage reduction
+r=1-TB; //reduction in starting torque
+r=r*100; //reduction in starting torque in percentage
+mprintf("\nThe reduction in starting torque is %f percentage",r)
+Radd=sqrt(R1^(2)+Xeq^(2))-R2;
+mprintf("\nThe resistance added to the rotor circuit to achieve the maximum torque is %f",Radd)
+//The answer given in the book is wrong
diff --git a/3811/CH5/EX5.4/Ex5_4.jpg b/3811/CH5/EX5.4/Ex5_4.jpg Binary files differnew file mode 100644 index 000000000..b22c66b85 --- /dev/null +++ b/3811/CH5/EX5.4/Ex5_4.jpg |
