直接功率轉(zhuǎn)換在單級PFC AC/DC變換器中的應(yīng)用

摘要：　　本文對現(xiàn)有的應(yīng)用直接功率轉(zhuǎn)換（DPT）技術(shù)的單級 PFC AC/DC變換器進(jìn)行了深入的分析和綜合，闡明了它們的直接功率轉(zhuǎn)換的機(jī)理和實(shí)現(xiàn)方法。分析表明，應(yīng)用DPT技術(shù)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(yīng)用中具有更大的前景。 敘詞：單級PFC AC/DC變換器 直接功率轉(zhuǎn)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