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무선전력충전시스템을 위한 브리지리스 단일전력단 교류-직류 컨버터
김민지,유상재,유경종,우정원,김은수,황인갑 전력전자학회 2020 전력전자학회 논문지 Vol.25 No.1
A bridgeless single-stage AC-DC converter for wireless power charging systems is proposed. This converter is composed of a PFC stage and a three-level hybrid DC-DC stage. The proposed converter can control the wide output voltage (200–450 VDC) by the variable link voltage and the pulse-width voltage applied to the primary resonant circuit due to the phase-shifted modulation at a fixed switching frequency. Moreover, the input power factor and the total harmonic distortion can be improved by using the proposed converter. A 1 kW prototype was fabricated and validated through experimental results and analysis.