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A new passive soft-switching dual-boost topology for power factor correction

This paper presents a new passive soft-switching dual-boost topology, which is suitable for higher power level (above 1 kW) single phase PFC rectification. No extra switch and control circuitry are needed. With a few add-on passive components, both power switches realize zero current turn on and zero voltage turn off. The operation principle and optimized design procedures of the topology are provided. A 1 kW prototype using optimized design parameters was built and the experimental results are given in the paper.