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// FUNDAMENTALS OF ELECTICAL MACHINES
// M.A.SALAM
// NAROSA PUBLISHING HOUSE
// SECOND EDITION
// Chapter 3 : TRANSFORMER AND PER UNIT SYSTEM
// Example : 3.6
clc;clear; // clears the console and command history
// Given data
V_1 = 2000 // primary voltage of transformer in V
V_2 = 400 // secondary voltage of transformer in V
kVA = 200 // kVA rating of transformer
R_1 = 3 // primary resistance in Ω
X_1 = 12 // primary reactance in Ω
R_2 = 0.3 // secondary resistance in Ω
X_2 = 0.1 // secondary reactance in Ω
// caclulations
a = V_1/V_2 // turn ratio
R_01 = R_1+(a^2*R_2) // total resistance referred to primary side Ω
X_01 = X_1+(a^2*X_2) // total reactance referred to primary side Ω
Z_01 = sqrt((R_01^2)+(X_01^2)) // equivalent impedance reffered to primary side in Ω
R_02 = R_2+(R_1/a^2) // total resistance referred to secondary side Ω
X_02 = X_2+(X_1/a^2) // total reactance referred to secondary side Ω
Z_02 = sqrt((R_02^2)+(X_02^2)) // equivalent impedance reffered to secondary side in Ω
// display the result
disp("Example 3.6 solution");
printf(" \n Equivalent impedance reffered to primary side \n Z_01 = %.1f Ω \n", Z_01);
printf(" \n Equivalent impedance reffered to secondary side \n Z_02 = %.2f Ω \n", Z_02);
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