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//chapter 5
//example 5.5
//page 427
clear;
clc;
disp("example 5.5");
disp("E(line to line)= 440V");
E_l=440; //line-to-line voltage
E_p=E_l/(sqrt(3));
N=750; //speed in rpm
fre=50; //frequency
P=(120*fre)/N;
printf("P= %d\n",P);
printf("E(per phase)= %dV\n",E_p);
ph=3; //3-phase machine
m=2; //number of slots per pole per phase
slots=m*P*ph; //total number of stator slots
SA_m=360/slots; //slot angle mechanical
SA_e=(P/2)*SA_m; //slot angle electrical
k_p=1; //assuming full pitch
printf("slot angle= %d degree electrical\n",SA_e);
printf("pitch factor=%f\n",k_p);
k_d=sind((m*SA_e)/2)/(m*sind(SA_e/2));
printf("distribution factor= %f\n\n",k_d);
//2 slots per pole per phase
NSp=2*P; //number of slots per phase
NTc=4; //number of turns per coil
T=8*NTc; //number of turns per phase
Fp=E_p/(4.44*fre*T*k_d*k_p);
printf("flux per pole= %fWb\n",Fp);
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