An impedance voltage compensation and vibration voltage suppression control by using inexact differential in a single-phase PWM inverter

We propose an impedance voltage drop compensation method and a vibration voltage suppression control method by using feed-forward control. The filter L voltage is estimated from an inverter output current and the filter C current is estimated from by using inexact differential calculation, respectively. The design method for the proposed control is shown. In the case of linear-load and non-linear-load, we examine the proposed method by simulations and experiments.