1 files changed, 40 insertions, 0 deletions
diff --git a/3760/CH3/EX3.36/Ex3_36.sce b/3760/CH3/EX3.36/Ex3_36.sce
new file mode 100644
index 000000000..29f3dfd5d
--- /dev/null
+++ b/3760/CH3/EX3.36/Ex3_36.sce
@@ -0,0 +1,40 @@
+clc;
+np=3; // number of phases
+p=6; // number of poles
+f=50; // frequency of alternator
+e=415; // open circuit emf;
+s=36; // number of slots in armature
+t=4; // number of turns per coil
+g=0.18; // air gap diameter
+l=0.4; // core length
+G=0.002; // gap length
+T=42; // number of turns in field winding
+kf=0.96; // winding factor
+uo=4*%pi*10^-7; // free space permeability
+disp('case a');
+nph=(s*t)/np; // series turn per phase
+spp=s/(p*np); // slots per pole per phase
+v=180/p; // slot angular pitch
+kd=sind((spp*v)/2)/(spp*sind(v/2)); // distribution factor
+Flu=e/(sqrt(2)*sqrt(3)*%pi*f*nph*kd); // flux per pole
+B=(p*Flu*2)/(4*l*g); 
+printf('Peak value of fundamental flux density wave is %f T\n',B);
+disp('case b');
+Fl=(G*B)/uo; // peak fundamental field mmf wave
+printf('Peak value of fundamental mmf wave is %f AT/pole\n',Fl);
+If=(%pi*Fl*p)/(4*kf*T);
+printf('DC field current is %f A\n',If);
+disp('case c');
+Te=114; // given torque
+Ta=146; // torque angle
+Fm=floor((Te*4*G)/(p*uo*%pi*g*l*Fl*sind(Ta)));
+printf('Peak value of fundamental armature mmf is %f AT/pole\n',Fm);
+Fr=sqrt(Fl^2+Fm^2+2*Fl*Fm*cosd(Ta));
+printf('Resultant mmf per pole is %f AT/pole\n',Fr); 
+disp('case d') 
+ia=(Fm*2*%pi*p)/(12*kd*nph*sqrt(2)); 
+printf('RMS value of armature current is %f A\n',ia);
+ns=1000; // speed in rpm
+wm=(2*%pi*ns)/60; // angular speed in rps
+pf=(Te*wm)/(sqrt(3)*e*ia);
+printf('Power factor is %f lagging',pf);