The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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The Efficiency Characteristics of LLC Half-Bridge Resonant Converter

LLC 하프 브리지 공진형 컨버터 효율 특성

  • 김성완 (목포대학 공대 전기공학과) ;
  • 김창선 (목포대학 공대 전기공학과)
  • Received : 2011.04.21
  • Accepted : 2011.05.16
  • Published : 2011.07.01
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Abstract

The resonant converter cause the high voltage stress according to the input voltage, which increases the conduction loss in converter power switches. The topology of LLC half bridge resonant converter provides ZVS characteristic and also the stress of voltage and current is smaller than that of the general resonant converters. So we can expect the higher efficiency. In this paper, the analysis of the characteristics of the converter efficiency and the best conditions for highest efficiency were investigated. As a result, the efficiency of utilizing up to 93% is achieved.

Keywords

References

  1. Bo Yang, Ffed C. Lee, Alpha J. Zhang, Guisong Huang, "LLC Resonant Converter for Front End DC/DC Conversion", APEC 2002, Vol 2, pp. 1108-1112, 10-14 March 2002.
  2. STEIGERWALD, R., "A comparison of half-bridge resonant converter topologies", IEEE Transactions on Power Electronics. Vol. 3, No. 2, April 1988, pp.174-182 https://doi.org/10.1109/63.4347
  3. 황국화, 윤대영, 김창선, "노트북 컴퓨터용 LLC 하프브리지 공진형어댑터설계," 대한전기학회 하계학술대회논문집(B), pp. 1039-1040, 2006.7.12-18(강원도 평창군 용평리조트)
  4. 이재득, 이달우, 안태영, "120W급 Half Bridge 공진형DC-DC 컨버터에 관한 연구", 전력전자학회 2004년도 전력전자학술대회 논문집(II) pp. 747-751, 2004.7

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