Impedance remodeling method and device for single-phase full-bridge inverter

The invention discloses an impedance remodeling method for a single-phase full-bridge inverter, and the method comprises the steps: obtaining a bridge arm input voltage, and carrying out the analysis and judgment of the voltage through an FFT method; when it is judged that oscillation exists in the input voltage, the input voltage is separated to obtain a corresponding direct-current component and a disturbance component; the disturbance component of the input voltage is analyzed in real time, and related current and voltage data are calculated; and constructing a virtual impedance regulator by using the data, introducing the virtual impedance regulator into a control link, and remodeling the local impedance of the input end of the inverter. The invention further discloses an impedance remodeling device based on the virtual impedance regulator. According to the method provided by the invention, the input impedance of the inverter is remodeled, so that the stability of the inverter is improved, and meanwhile,