diff options
Diffstat (limited to '503/CH9/EX9.11')
| -rwxr-xr-x | 503/CH9/EX9.11/ch9_11.sci | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/503/CH9/EX9.11/ch9_11.sci b/503/CH9/EX9.11/ch9_11.sci new file mode 100755 index 000000000..59899d2bd --- /dev/null +++ b/503/CH9/EX9.11/ch9_11.sci @@ -0,0 +1,19 @@ +//to find starting current and torque, necessary exteranl resistance and corresponding starting torque
+
+clc;
+f=50;
+R2=.1;
+X2=2*%pi*f*3.61*10^-3;
+a=3.6;
+R22=a^2*R2;
+X22=a^2*X2;
+V=3000;
+n_s=1000;
+w_s=2*%pi*n_s/60;
+I_s=(V/sqrt(3))/sqrt(R22^2+X22^2);disp(I_s,'starting current(A)');
+T_s=(3/w_s)*(V/sqrt(3))^2*R22/(R22^2+X22^2);disp(T_s,'torque(Nm)');
+
+Iss=30;
+Rext=sqrt(((V/sqrt(3)/Iss)^2-X22^2)-R22);
+disp(Rext,'external resistance(ohm)');
+T_s=(3/w_s)*(V/sqrt(3))^2*(R22+Rext)/((R22+Rext)^2+X22^2);disp(T_s,'torque(Nm)');
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