Predictive Control of Parallel Boost Converters

In this paper a novel predictive control for parallel power factor correction (PFC) scheme is proposed. It is based on an optimized power sharing where the active filtering approach is used in order to increase the current quality and, at the same time, to reduce the switching losses. A prototype of parallel PFC controlled by a DSP was set up to implement the proposed control strategy. Both the simulation and experimental results show that the proposed approach achieves near unity power factor and a not negligible switching losses reduction.