A Novel Buck-Boost Z-Source Rectifier

This paper presents a novel buck/boost Z-Source rectifier, in which an impedance network is employed to couple the rectifier main circuit to the load, thus it provides unique features that cannot be obtained in a traditional full-bridge rectifier. The Z-source rectifier can access buck or boost function without using two-stage power conversion, so it overcomes the limitations of the traditional cascaded buck rectifier. The simulation and experiment had been presented to verify the proposed theories