% This file is used to compute the values of Kp and Ki for the current regulator.
% Place this file in the same folder than the Simulink file.
% PARAMETERS
fs = 20e3; % Sampling, interrupt and switching frequency [Hz]
Ts = 1/fs; % Sampling period [s]
Lg = 2.5e-3; % Grid inductance [H]
Rg = 22e-3; % Grid inductor resistance [Ohm]
C = 3*260e-6; % Capacitance of the DC bus [F]
Vdc = 130; % Inital DC bus voltage [V]
Vg = 40; % RMS grid voltage [V]
Vg_peak = Vg*sqrt(2); % Peak grid voltage [V]
Ig_d0 = 6; % Initial current on d-axis [A]
Ig_q0 = 2; % Initial current on q-axis [A]
phi = atan(Ig_q0/Ig_d0); % Current phase angle [rad]
Vga0 = Vg_peak*sin(0); % Initial phase A grid voltage [V]
Vgb0 = Vg_peak*sin(-2*pi/3); % Initial phase B grid voltage [V]
Vgc0 = Vg_peak*sin(2*pi/3); % Initial phase C grid voltage [V]
Ig_peak = sqrt(Ig_d0^2+Ig_q0^2); % Inital peak current
Iga0 = Ig_peak*cos(phi); % Initial phase A grid current [A]
Igb0 = Ig_peak*cos(phi-2*pi/3); % Initial phase B grid current [A]
Igc0 = Ig_peak*cos(phi+2*pi/3); % Initial phase C grid current [A]
% BOOST CURRENT REGULATOR -------------------------------------------------
K1 = 1/Rg;
T1 = Lg/Rg;
Td = (1/2 + 1/2 + 1/3)*Ts;
Tn1 = T1;
Ti1 = 2*K1*Td;
Kp1 = Tn1/Ti1;
Ki1 = 1/Ti1;