Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Novel Interleaved Single-Stage AC/DC Converter with a High Power Factor and High Efficiency

  • Wang, Yijie (Dept. of Electrical and Electronics Engineering, Harbin Institute of Technology) ;
  • Wang, Wei (Dept. of Electrical and Electronics Engineering, Harbin Institute of Technology) ;
  • Zhang, Xiangjun (Dept. of Electrical and Electronics Engineering, Harbin Institute of Technology) ;
  • Xu, Dianguo (Dept. of Electrical and Electronics Engineering, Harbin Institute of Technology)
  • Received : 2010.06.23
  • Published : 2011.05.20
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Abstract

A novel single-stage AC/DC converter with the soft-switching characteristic based on interleaving technology and an LLC topology is proposed here. The converter is integrated by an interleaved cell and an LLC cell. Because the components of the system are reduced as a result of integrating, the cost decreases. Since interleaving technology is adopted, the converter can work in a high voltage input state. The LLC topology chosen here ensures that the switches on the primary side work in the ZVS condition and that the diodes on the secondary side work in the ZCS condition, which decreases the switching loss of the system. A theoretical analysis and the design procedures of the proposed converter are proposed and discussed in detail. Simulations and experimental studies with a 100W prototype are done to prove the analysis.

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