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-rwxr-xr-x431/CH4/EX4.34/EX4_34.sce24
-rwxr-xr-x431/CH4/EX4.34/resultEX4_34.txt5
2 files changed, 29 insertions, 0 deletions
diff --git a/431/CH4/EX4.34/EX4_34.sce b/431/CH4/EX4.34/EX4_34.sce
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+//Calculating the rotor current at slip 3 precent and when the rotor develops maximum torque
+//Chapter 4
+//Example 4.34
+//page 352
+clear;
+clc;
+disp("Example 4.34")
+E20=120;......................//induced emf of motor at standstill in volts
+E20p=120/sqrt(3);.....................//induced emf per phase
+f=50;...............................//frequency of the motor in hertz
+R2=0.2;.................................//Rotor Resistance per phase
+X20=1;.....................................//Standstill resistance in ohms
+P=4;................................//pole
+I=16;........................//
+S=(I*R2)/sqrt((E20)^2-(I*X20)^2);
+Ns=(120*f)/P;
+printf("Synchronous speed=%frpm",Ns)
+Nr=Ns-(Ns*S)
+Sm=R2/X20;
+Nr=Ns-(Ns*Sm)
+I2=(Sm*E20p)/sqrt((R2)^2+(Sm*X20)^2)
+printf("\nrotor current at maximum torque=%fAper Phase",I2)
+Pi=(3*((I2)^2)*R2)/Sm;
+printf("\nRotor input for the three phase=%fW",Pi) \ No newline at end of file
diff --git a/431/CH4/EX4.34/resultEX4_34.txt b/431/CH4/EX4.34/resultEX4_34.txt
new file mode 100755
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@@ -0,0 +1,5 @@
+
+ Example 4.34
+Synchronous speed=1500.000000rpm
+rotor current at maximum torque=48.989795Aper Phase
+Rotor input for the three phase=7200.000000W \ No newline at end of file