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

This paper 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 and OPC, the tank capacitor voltage.
The resonant converter corresponds to a three phase to single
phase matrix converter which feeds a resonant tank (SRPL).
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 paper is the
consideration of the effect of the control choice on the input
current as well HVDC quality produced by the power supply.