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//Electric machines and power systems by Syed A Nasar
//Publisher:TataMcgraw Hill
//Year: 2002 ; Edition - 7
//Example 2.3
//Scilab Version : 6.0.0 ; OS : Windows
clc;
clear;
bg=0.001; //flux in the air gap in Wb
Am=16*10^-4; //area of magnetic member in m^2
u0=4*3.14*10^-7; //permiability of free space
lm=0.1; //length of the steel in m
lg=0.1*10^-3; //length of air gap in m
sf=0.9; //stacking factor of M19 steel
h=130,hm=54; //flux density in At/m
rg=lg/(1.1*u0*Am); //reluctance
bm=bg/(sf*Am); //flux density in magnetic material in T
ua=bm/(u0*hm); //amplitude of permeability
rm=lm/(ua*u0*Am); //reluctance of magnetic member
NI=bg*(rg+rm); //exciting ammpereturns in At
printf('the required ampere turns is %2f',NI)
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