Comparison of predictive control strategies for direct resonant high voltage DC power supply

The speakerr presents a comparison between two predictive control strategies for a HVDC power supply based on a direct resonant power converter: input predictive control (IPC) and output predictive control (OPC). IPC regulates the input filter capacitor voltage while OPC regulates the tank capacitor voltage. The resonant converter corresponds to a three-phase to single-phase matrix converter which feeds a series-resonant parallel-loaded (SRPL) tank. Both predictive strategies allow soft commutations, thus minimizing the switching losses. Previous work has analysed the effects of the control choice on an AC voltage power supply only. The main contribution of this presentation is the consideration of the effect of the control choice on the input current as well as the HVDC quality produced by the power supply.