摘要: 本文對現有的應用直接功率轉換(DPT)技術的單級 PFC AC/DC變換器進行了深入的分析和綜合,闡明了它們的直接功率轉換的機理和實現方法。分析表明,應用DPT技術不僅可以有效地降低單級PFC AC/DC變換器直流母線電壓,而且也較大地提高其效率,使其在小功率的應用中具有更大的前景。
敘詞:單級PFC AC/DC變換器 直接功率轉換 效率 直流母線電壓
Abstract: This paper analyzes and synthesizes the current topologies of single-stage PFC DC/DC converters with the direct power transfer(DPT) technology,and describes mechanism and implementation of the DPT technology. The result obtained shows that applying DPT technology to the single-stage PFC AC/DC converters can not only effectively decrease their DC bus voltage ,but also improve their conversion efficiency,so they are more promising in low power application.
Keyword:single-stage PFC AC/DC converter;direct power transfer; efficency;DC bus voltage