diff options
Diffstat (limited to 'Working_Examples/2777/CH7/EX7.10')
-rwxr-xr-x | Working_Examples/2777/CH7/EX7.10/Ex7_10.sce | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Working_Examples/2777/CH7/EX7.10/Ex7_10.sce b/Working_Examples/2777/CH7/EX7.10/Ex7_10.sce new file mode 100755 index 0000000..97b59e5 --- /dev/null +++ b/Working_Examples/2777/CH7/EX7.10/Ex7_10.sce @@ -0,0 +1,41 @@ +
+// ELECTRICAL MACHINES
+// R.K.Srivastava
+// First Impression 2011
+// CENGAGE LEARNING INDIA PVT. LTD
+
+// CHAPTER : 7 : SPECIAL MOTORS AND INTRODUCTION TO GENERALIZED MACHINE THEORY
+
+// EXAMPLE : 7.10
+
+clear ; clc ; close ; // Clear the work space and console
+
+
+// GIVEN DATA
+
+L = 1.0; // Length in Meter
+S = 60; // Number of slots
+f = 50; // Frequency in Hertz
+v = 440; // Operating Volage of the Motor in Volts
+V = 11.5; // Running speed of the motor in Meter/second
+m = 3; // Number of phases
+p = 8; // Total number of Poles
+
+
+// CALCULATIONS
+
+Vs = (2*L*f)/p; // Synchronous linear speed in Meter/second
+s = (Vs-V)/Vs; // Linear slip
+Vph = v/sqrt(3); // Phase Voltage in Volts
+Z1 = 6.0 + %i*5; // Impedance in Ohms refer figure and page no. 526
+Z2 = ((100*%i)*(5*%i+8.2/s))/(100*%i+5*%i+8.2/s); // Impedance in Ohms refer figure and page no. 526
+Z = Z1 + Z2; // Total Impedance in Ohms
+I = Vph/Z; // Per phase Current when Machine is running at 11.5 m/s in Amphere
+pf = cosd(atand(imag(I),real(I))); // Power factor lagging
+
+
+// DISPLAY RESULTS
+
+disp("EXAMPLE : 7.10 : SOLUTION :-") ;
+printf("\n (a) Synchronous linear speed, Vs = %.1f m/s \n ",Vs);
+printf("\n (b) Per phase current when Machine is running at 11.5 m/s, I = %.2f < %.2f A \n",abs(I),atand(imag(I),real(I)))
|