Voltage regulation in series resonant DC-to-DC power converters with unknown resistive load

In this note we present a control strategy combining continuous and discrete time control schemes to regulate the average voltage at the load in series resonant DC-to-DC power converters. We succeed to regulate, at a constant desired value, the average voltage in the resistive load in spite of the unknown load and uncertain values of the DC power supply. The design of the discrete time part of the controller relies on static nonlinearities satisfying a sector condition.