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

The Korean Institute of Power Electronics (전력전자학회)
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LLC Resonant Converter with Two Transformers and Resonant Tanks

두개의 변압기와 공진 탱크로 구성된 LLC 공진 컨버터

  • Published : 2009.10.20
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Abstract

To cope with the high power density and low cost in switching power supply, LLC resonant converters with the two resonant tank circuits composed of resonance capacitors and two transformers are proposed in this paper. Each transformers used for the proposed resonant circuits are parallel connected in the primary and series connected in the secondary to reduce the current unbalance. The proposed LLC resonant converters are described and verified on 300W experimental prototype.

본 논문에서는 전원장치의 고집적화와 저가격화를 위해 두 개의 공진커패시터와 두 개의 변압기로 구성된 독립된 공진탱크회로를 갖는 LLC 공진 컨버터를 제안하였다. 제안된 공진회로에 적용된 두개의 변압기는 각 변압기에 흐르는 전류 불평형문제를 저감하기 위해 1차 측은 병렬 연결되어 있고 2차 측은 상호 직렬 연결되어 있다. 300W 시제품을 제작 실험한 결과를 통해 제안된 LLC 공진컨버터가 적용 가능함을 나타냈다.

Keywords

References

  1. B.Yang, F. C. Lee, A. J. Zhang and G. Huang, 'LLC resonant converter for front end DC/DC conversion,' IEEE APEC'02, Vol.2, pp. 1108-1112, 2002
  2. B. Lu, W. Liu, Y. Liang, F. C. Lee and J. D. can Wyk, 'Optimal design methodology for LLC resonant converter,' IEEE APEC'06, pp533-538, 2006
  3. Y. Gu, L. Hang, U. Chen, Z. Lu, Z. Qiann and J. Li, 'A simple structure of LLC resonant DC-DC converter for multi-output applications,' IEEE APEC'05, Vol. 3, pp. 1485-1490, 2005
  4. Lin, B.-R., Chen, J.-J., Yang, C.-L, 'Analysis and Implementation of Dual-Output LLC Resonant Converter', IEEE ICIT 2008,
  5. Bor-Ren Lin, Chao-Hsien Tseng, 'Analysis of Rarallel-Connected Asymmetrical Soft-Switching Converter.' IEEE Transactions on Industrial Electronics, Vol. 54, No. 3, June 2007