输出波形可调的三相逆变电路

% 三相逆变电路模型
function output_signal = three_phase_inverter(input_signal)
% 输入参数：三相正弦波输入信号，格式为[m, 3]，m为时间步数
% 输出参数：逆变后的三相正弦波输出信号，格式为[m, 3]

% 定义逆变电路参数
C = 10e-6;     % 电容容值
R = 1e3;       % 电阻电阻
L = 1e-3;      % 电感电感
D = 0.5;       % 占空比

% 计算输出信号
Vg = max(input_signal, 0);    % 输入信号的正半周期
Vo = zeros(size(input_signal));  % 输出信号初始化为全0
for i = 1:size(input_signal, 1)
    t = mod(i-1, size(input_signal, 1)/3);    % 计算时刻t
    if t < D
        Vo(i, 1) = Vg(i, 1);
        Vo(i, 2) = -Vg(i, 1)/2 + sqrt(3)/2*Vg(i, 2);
        Vo(i, 3) = -Vg(i, 1)/2 - sqrt(3)/2*Vg(i, 2);
    else
        Vo(i, 1) = 0;
        Vo(i, 2) = 0;
        Vo(i, 3) = 0;
    end
end

% 添加滤波电路
Vo = filter_rc(Vo, C, R, L);

% 输出逆变后的信号
output_signal = Vo;
end

% RC滤波器函数
function output_signal = filter_rc(input_signal, C, R, L)
% 输入参数：信号输入，电容容值C，电阻电阻值R，电感电感值L
% 输出参数：滤波后的信号输出

% 计算RC滤波器参数
Fc = 1/(2*pi*R*C);
B = R/L;
Q = sqrt(L/C)/R;

% 计算滤波后的信号
w0 = 2*pi*Fc;
alpha = w0/(2*Q);
A = w0^2/(alpha^2 + w0^2)*C;
B = alpha/(alpha^2 + w0^2)*C;
C = 1/(alpha^2 + w0^2)*C;
s = tf('s');
G = C*(s^2 + B*s + w0^2)/(s^2 + 2*alpha*s + w0^2);
output_signal = lsim(G, input_signal);

end