전력전자학회논문지 (The Transactions of the Korean Institute of Power Electronics)

  • 제17권6호
  • /
  • Pages.507-515
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  • 2012
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  • 1229-2214(pISSN)
  • /
  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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낮은 입력전압, 대전류 응용을 위한 2단 구성 승압컨버터

Two Stage High Step-Up Converter for Low Input Voltage and High Current Applications

  • Noh, Young-Jae (Electrical & Electronics Engineering, Jeonju University) ;
  • Xu, Han (Electrical & Electronics Engineering, Jeonju University) ;
  • Kang, Cheol-Ha (Electrical & Electronics Engineering, Jeonju University) ;
  • Kim, Eun-Soo (Electrical & Electronics Engineering, Jeonju University) ;
  • Jang, Sang-Ho (LG Innotek Components R&D Center)
  • 투고 : 20110229
  • 심사 : 2012.05.12
  • 발행 : 2012.12.20
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초록

DC-DC converter which composed of LLC resonant converter, operated by fixed switching frequency with fixed duty cycle (50%), and flyback converter to provide constant output voltage($400V_{DC}$) with variation of input voltage($30-60V_{DC}$) is proposed in this paper. To obtain constant output voltage($400V_{DC}$), flyback converter is not operated in case of above the maximum input voltage($60V_{DC}$) and operated as the input voltage decreases to below 60VDC. Therefore, flyback converter can be designed to the 50% power rating of the maximum power in the proposed DC-DC converter. Operation modes and voltage gain characteristics were analyzed and a 360W prototype converter was tested to verify the proposed converter.

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참고문헌

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