Скачать или смотреть Van der Pol Oscillator (VdPO) based Virtual Oscillator Control Technique for Parallel Inverters

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
V_min = 0.95*V_LN; %Minimum phase voltage
%Rated inverter power
P_rated = 10e3; %Per inverter
Q_rated = 10e3;
%Steady-state
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
%Van der Pol Oscillator Dynamics
Kv = V_max; %Voltage gain
Ki = (3*V_min)/(Q_rated); %Current gain
sigma = (1/m_q)*(Ki/6); %Oscillator conductance
R = -1/sigma; %Oscillator resistance
alpha = (2*sigma)/3; %Current source factor
C = (1/n_p)*(Ki/(6*Kv)); %Oscillator capacitance
L = 1/(C*w^2); %Oscillator inductance
% 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.
% 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;