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논문 기본 정보

저자정보
(서울대) (University of Michigan-Ann Arbor) (서울대)
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전력전자학회 전력전자학회논문지 전력전자학회 논문지 제29권 제1호
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    초록·키워드

    The current total harmonic distortion(THD) in grid-connected converters must be lowered to improve efficiency and meet grid connection standards. In this study, closed-loop current control was performed by applying variable switching frequency, which minimizes THD at the same average number of switching times per fundamental period for full-bridge PFC. To achieve this, the switching frequency maintaining a constant current ripple size was calculated. Then, the pulse width of the PWM carrier wave changes in time to implement variable switching frequency. The results of the offline simulation and hardware-in-the-loop simulation showed that, compared with the fixed frequency method, THD was reduced by applying the proposed variable switching frequency.

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      UCI(KEPA) : I410-151-24-02-089360112