说明：  单相逆变器仿真，MATLABR2016B工程文件，THD小于1%，电压电流双闭环控制，并且加入了负载扰动，控制效果良好
(Simulations of single-phase inverters show that the THD of MATLAB R2016B project file is less than 1%. Double closed-loop control of voltage and current is adopted, and load disturbance is added. The control effect is good.)