电力电子课程设计boost电路的建模与仿真详细资料说明

%%初始传递函数计算 % syms s; s=tf('s'); Dx=0.4;Uo=100;R=50;L=200e-6;C=20e-6;%占空比0.6 Dx=1-0.6=0.4 Gvd=Dx*Uo*(1-(s*L/((Dx^2)*R)))/(L*C*s^2+(L/R)*s+Dx^2);%pwm到输出 G=Gvd/20/6;%开环传递函数 simplify(G)%%公式化简; [mag,phase,w]=bode(G); margin(mag,phase,w);% %%%%%%%初始bode图 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Gcb=(1+5.9e-5*s)/(1+4.24e-6*s);%%不加k的校正函数 % % % % Gcb=6.7e-5*(1+s/1.67e4)/(1+s/9.5e5); % Gc1b=G*Gcb*2;%% 加上PD和k后 GPI=(s+6.3e2)/s;%% PI环节 % GPID=Gcb*GPI*2/6; fin_G=Gcb*GPI; GG=Gcb*G*2*GPI % simplify(GPID)%%公式化简 % [mag,phase,w]=bode(Gc1b); % margin(mag,phase,w);% %%%%%%% bode图 % Gpid=401.47*(1+0.00045*s)^2/s [mag,phase,w]=bode(GG); margin(mag,phase,w);% %%%%%%% bode图