From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 3760/CH3/EX3.14/Ex3_14.sce | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 3760/CH3/EX3.14/Ex3_14.sce

(limited to '3760/CH3/EX3.14/Ex3_14.sce')

diff --git a/3760/CH3/EX3.14/Ex3_14.sce b/3760/CH3/EX3.14/Ex3_14.sce
new file mode 100644
index 000000000..0755c00db
--- /dev/null
+++ b/3760/CH3/EX3.14/Ex3_14.sce
@@ -0,0 +1,30 @@
+clc;
+s=81; // number of slots
+p=6; // number of poles
+np=3; // number of phases 
+cs=13; // coil span in terms of slot pitches
+v=60; // phase spread for three phase winding
+f3=0.4; // ratio of third harmonic flux to first harmonic flux
+f5=0.25; // ratio of fifth harmonic flux to first harmonic flux
+spp=s/(p*np); // // spp is not an integer, the 2-phase winding is a fractional slot winding, therefore Sk is given by
+Sk=spp*2;
+ap=(p*180)/s;
+Cs=cs*ap; // coil span
+e=180-Cs; // chording angle
+kd1=sind(v/2)/(Sk*sind(v/(2*Sk))); // distribution factor for fundamental harmonic
+kp1=cosd(e/2); // coil span factor
+kd3=sind((3*v)/2)/(Sk*sind((3*v)/(2*Sk))); // distribution factor for third harmonic
+kp3=cosd((3*e)/2); // coil span factor for third harmonic
+kd5=sind((5*v)/2)/(Sk*sind((5*v)/(2*Sk))); // distribution factor for fifth harmonic
+kp5=cosd((5*e)/2); // coil span factor for fifth harmonic
+kw1=kd1*kp1; // winding factor for fundamental harmonics
+kw3=kd3*kp3; // winding factor for third harmonic
+kw5=kd5*kp5; // winding factor for fifth harmonic 
+ep3=(kw3*f3)/kw1; 
+printf('rms value of third harmonic emf is %f times the fundamental harmonic emf\n',ep3);
+ep5=(kw5*f5)/kw1; 
+printf('rms value of fifth harmonic emf is %f times the fundamental harmonic emf\n',ep5);
+ep=sqrt(1+ep3^2+ep5^2); // resultant phase emf
+el=sqrt(3)*sqrt(1+ep5^2); // resultant line emf
+r=el/ep; 
+printf('Ratio of resultant line emf to resultant phase emf is %f',r);  
-- 
cgit