1 files changed, 30 insertions, 0 deletions
diff --git a/1938/CH6/EX6.26/6_26.sce b/1938/CH6/EX6.26/6_26.sce
new file mode 100755
index 000000000..622f3e19e
--- /dev/null
+++ b/1938/CH6/EX6.26/6_26.sce
@@ -0,0 +1,30 @@
+clc,clear
+printf('Example 6.26\n\n')
+
+X_d=0.8,X_q=0.5,R_a=0.02 //armature resistance and synchronous reactance of direct,quadrature axis
+
+//case(i)  lag
+phi=acos(0.8)
+V_t=1
+I_a=1//full-load
+psi=atan(  (V_t*sin(phi)+I_a*X_q)/(V_t*cos(phi)+I_a*R_a)            )
+delta=psi-phi
+
+I_d=I_a*sin(psi)
+I_q=I_a*cos(psi)
+
+E_f=V_t*cos(delta)+I_d*X_d+I_q*R_a
+regulation=100*(E_f-V_t)/V_t
+printf('percentage regulation at 0.8 pf lag is %.2f percent',regulation)
+
+//case(ii)  lead
+phi2=-1*acos(0.8) //minus sign because of leading pf
+psi2=atan(  (V_t*sin(phi2)+I_a*X_q)/(V_t*cos(phi2)+I_a*R_a)            )
+delta2=psi2-phi2
+
+I_d2=I_a*sin(psi2)
+I_q2=I_a*cos(psi2)
+
+E_f2=V_t*cos(delta2)+I_d2*X_d+I_q2*R_a
+regulation2=100*(E_f2-V_t)/V_t
+printf('\npercentage regulation at 0.8 pf lead is %.2f percent',regulation2)