Скачать или смотреть Droop Control for Stand-alone (Islanded) Microgrid using MATLAB/Simulink || Three-phase GFM Inverter

clear all;
fsw = 15e3; %Switching frequency
Ts = 2.5e-6; %Sampling time
Vdc = 750; %DC link voltage
f = 50; %Nominal frequency in Hz
w = 2*pi*f; %Nominal angular frequency
V_LL = 400; %Nominal Line to line voltage or, Line voltage
V_LN = V_LL/sqrt(3); %Nominal Phase voltage
V_max = 1.05*V_LN; %Maximum phase voltage
%Rated inverter power
P_rated = 10e3; %Per inverter
Q_rated = 10e3;
%Droop coefficients
DeltaW = 0.005; %Permissable frequency deviation
DeltaV = 0.05; %Permissable voltage deviation
n_p = DeltaW*w/P_rated; %P-f droop coefficient
m_q = DeltaV*V_max/Q_rated; %Q-V droop coefficient
% Filter Parameters
Rc = 0.3e-3; %Converter side parasitic resistance.
Lc = 5.082e-4; %Converter side filter inductance.
Rd = 0.84; %Damping resistor.
Cf = 3.01e-5; %Filter capacitance.
Rg = 0.2e-3; %Grid side parasitic resistance.
Lg = 3.05e-4; %Grid side filter inductance.
%Tuning the current control
w_0i = 2*pi*fsw/10; %Bandwith of the current controller
rho = 1.1; %Damping coefficient
Kp_i = 2*rho*w_0i*Lc - Rc; %Proportional gain in current controller
Ki_i = w_0i^2*Lc; %Integral gain of current controller
%V_filt = 1000; %1/timeconstant for filtering the voltage at the capacitor.
%Tuning the voltage controller
w_0v = w_0i/10; %Bandwidth of the voltage controller
Kp_v = 2*rho*w_0v*Cf; %Proportional gain in voltage controller
Ki_v = w_0v^2*Cf; %Integral gain in voltage controller
% Line Parameters
Rline1 = 1.014;
Lline1 = 0.174e-3; % Xline1 = 0.0546637, Therefore R/X is 18.55
Rline2 = 1.014;
Lline2 = 0.174e-3;