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首页> 外文期刊>International journal of circuit theory and applications >A novel single-stage AC-DC converter with quasi-resonant zero-voltage-switching for high power factor and high efficient applications
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A novel single-stage AC-DC converter with quasi-resonant zero-voltage-switching for high power factor and high efficient applications

机译：具有准谐振零电压开关的新型单级AC-DC转换器，适用于高功率因数和高效应用

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摘要

A new single-stage-isolated ac-dc converter that can guarantee both high efficiency and high power factor is proposed. It is based on a new dc-dc topology that has prominent conversion ratio similar to that of boost topology so that it is adequate to deal with the universal ac input. In addition, since it utilizes the transformer more than others based on the general flyback topology, the size of whole power system can be reduced due to the reduced transformer. Moreover, the voltage stresses on the secondary rectifiers can be clamped to the output voltage by adopting the capacitive output filter and clamp diode, and the turn-off loss in the main switch can be reduced by utilizing the resonance. Furthermore, since this converter operates at the boundary conduction mode, the line input current can be shaped as the waveform of a line voltage automatically and the quasi-resonant zero-voltage switching can be obtained. Consequently, it features higher efficiency, lower voltage stress, and smaller sized transformer than other topologies. A 100 W prototype has been built and tested as the validation of the proposed topology.
机译：提出了一种新型的可同时保证高效率和高功率因数的单级隔离式ac-dc转换器。它基于一种新的dc-dc拓扑，该拓扑具有与升压拓扑相似的出色转换比，因此足以应付通用ac输入。另外，由于基于一般的反激拓扑，它比其他变压器更多地利用了变压器，因此由于减少了变压器，可以减小整个电力系统的尺寸。此外，通过采用电容输出滤波器和钳位二极管，可以将次级整流器上的电压应力钳位到输出电压，并且可以利用谐振来降低主开关中的关断损耗。此外，由于该转换器在边界传导模式下工作，所以可以将线输入电流自动成形为线电压的波形，并且可以获得准谐振零电压开关。因此，与其他拓扑相比，它具有更高的效率，更低的电压应力以及更小的变压器尺寸。已构建并测试了100 W原型，以验证所提出的拓扑。

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  • 作者

    Myung-Bok Kim; Ki-Bum Park; Myung-Joong Youn;

  • 作者单位

    Division of Electrical Engineering, School of Electrical Engineering and Computer Science, KAIST, Daejeon, Republic of Korea;

    Division of Electrical Engineering, School of Electrical Engineering and Computer Science, KAIST, Daejeon, Republic of Korea;

    Division of Electrical Engineering, School of Electrical Engineering and Computer Science, KAIST, Daejeon, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    single-stage isolated PFC converter; ZVS-QRC;

    机译：单级隔离式PFC转换器ZVS-QRC;

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