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authorpriyanka2015-06-24 15:03:17 +0530
committerpriyanka2015-06-24 15:03:17 +0530
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+clc,clear
+printf('Example 4.16\n\n')
+
+Pole=10
+Ns=600 //speen in rpm
+conductor_per_slot=8
+n=12 //slots per pole
+Slots=Pole*n
+m=n/3 //slots per pole per phase
+beeta=180/n //slot angle
+alpha=2*beeta //short by 2 slots
+
+//flux per pole corresponding to 1st,3rd and 5th harmonic
+phi_1=100*10^-3
+phi_3=(33/100)*phi_1
+phi_5=(20/100)*phi_1
+
+//coil span factor corresponding to 1st,3rd and 5th harmonic
+K_c1=cosd( alpha/2)
+K_c3=cosd( 3*alpha/2)
+K_c5=cosd( 5*alpha/2)
+
+// using K_dx=sin(m*x*beeta /2) /(m*sin(x*beeta /2))
+//distribution factor corresponding to 1st,3rd and 5th harmonic
+K_d1=sind(m*1*beeta/2) /(m*sind(1*beeta /2))
+K_d3=sind(m*3*beeta/2) /(m*sind(3*beeta /2))
+K_d5=sind(m*5*beeta/2) /(m*sind(5*beeta /2))
+
+Z=conductor_per_slot*n*Pole //Total Conductors
+Zph=Z/3 //conductors per phase
+T_ph=Zph/2 //turns per phase
+
+f=Ns*Pole/120
+E_1ph=4.44*K_c1*K_d1*phi_1*f*T_ph
+E_3ph=4.44*K_c3*K_d3*phi_3*f*T_ph
+E_5ph=4.44*K_c5*K_d5*phi_5*f*T_ph
+
+E_ph=sqrt( E_1ph^2 + E_3ph^2 + E_5ph^2 )
+printf('Phase value of induced e.m.f is %.0f V ',E_ph)
+E_line=sqrt(3)*sqrt( E_1ph^2 + E_5ph^2 ) //In a line value,3rd harmonic doesnt appear
+printf('\nline value of induced e.m.f is %.0f V ',E_line)