Capacitive impedance control provides the capability to control a power converter to actively mimic the voltage-current characteristics of a physical passive capacitor, but existing impedance control methods cannot achieve accurate capacitive control due to parameter errors. This digest proposes a capacitive impedance control method with adaptive parameter capability, which is adaptive to changes in the parameters to maintain the capacitance of the active capacitor to the given reference with high precision. A volume-optimized design procedure of the active capacitor in high-power applications considering reliability design constraints is proposed as well. A 16-kW case study demonstrates the control method and design results.
