Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Analysis and Design of Transformer Windings Schemes in Multiple-Output Flyback Auxiliary Power Supplies with High-Input Voltage

  • Meng, Xianzeng (School of Mechanical and Electrical Engineering, Heilongjiang University) ;
  • Li, Chunyan (School of Mechanical and Electrical Engineering, Heilongjiang University) ;
  • Meng, Tao (School of Mechanical and Electrical Engineering, Heilongjiang University) ;
  • An, Yanhua (School of Mechanical and Electrical Engineering, Heilongjiang University)
  • Received : 2019.01.04
  • Accepted : 2019.05.29
  • Published : 2019.09.20
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Abstract

In this paper, aiming at high-voltage applications, transformer windings schemes of multiple-output two-transistor flyback converters are investigated, which are mainly based on the stray capacitances effect. First, based on a transformer model including equivalent stray capacitors, the operational principle of the converter is presented, and the main influence of its stay capacitors is determined. Second, the windings structures of the transformer are analyzed and designed based on the stray capacitances effect. Third, the windings arrangements of the transformer are analyzed and designed through a coupling analysis of the secondary windings and a stray capacitance analysis between the primary and secondary windings. Finally, the analysis and design conclusions are verified by experimental results obtained from a 60W laboratory prototype of a multiple-output two-transistor flyback converter.

Keywords

References

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