diff options
Diffstat (limited to '431/CH4/EX4.16/EX4_16.sce')
| -rwxr-xr-x | 431/CH4/EX4.16/EX4_16.sce | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/431/CH4/EX4.16/EX4_16.sce b/431/CH4/EX4.16/EX4_16.sce new file mode 100755 index 000000000..ee0844bf5 --- /dev/null +++ b/431/CH4/EX4.16/EX4_16.sce @@ -0,0 +1,20 @@ +//Calculating starting torque
+//Chapter 4
+//Example 4.16
+//page 311
+clear;
+clc;
+disp("Example 4.16")
+f=50; //frequency in hertz
+P=4; //number of poles
+R2=0.04; //rotor resistance in ohms
+Ns=(120*f)/P;
+printf("Syncronous speed=%drpm",Ns);
+Nr=1200; //rotor speed at maximium torque in rpm
+S=(Ns-Nr)/Ns;
+printf("\nSlip at maximium torque=%f",S);
+X20=R2/S;
+//starting torque is developed when S=1
+//r=(Tst/Tm)
+r=(R2/(R2^2+X20^2))*(2*X20);
+printf("\nTherefore, starting torque is %fpercent of the maximium torque",(r*100));
|