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

  • 제24권1호
  • /
  • Pages.66-69
  • /
  • 2019
  • /
  • 1229-2214(pISSN)
  • /
  • 2288-6281(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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넓은 입력전압 범위에서 높은 효율을 가지는 위상천이 풀브릿지 컨버터

A High Efficiency Phase-Shifted Full-Bridge Converter with Wide Input Voltage Range

  • 투고 : 2018.07.09
  • 심사 : 2018.07.31
  • 발행 : 2019.02.20
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초록

This study proposes a high-efficiency phase-shifted full-bridge (PSFB) converter with a wide input voltage range. The conventional PSFB converter is a useful topology in high-power applications. This converter not only achieves the zero-voltage switching of the primary switches, but also has small RMS current in the primary side. However, because the conventional PSFB converter has large freewheeling current in the primary side when it is designed considering the hold-up time of the converter, such a converter has high conduction loss at the primary switches. To solve this problem, a new PSFB converter is proposed in this study. The experiment is implemented with an input voltage ranging from a 320 V-400 V and an output power specification of 715 W.

키워드

JRJJC3_2019_v24n1_66_f0001.png 이미지

Fig. 1. General power supply. (a) Structure of power supplies, (b) operation duirng the hold-up time.

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Fig. 2. Conventional PSFB converter and its key waveforms.

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Fig. 3. Proposed PSFB converter and its key waveforms.

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Fig. 4. Comparison of the rectifiers. (a) Conventional PSFB converter and (b) proposed PSFB converter.

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Fig. 5. Voltage gain graph of the converters.

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Fig. 6. Voltage stress of rectifier diodes.

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Fig. 7. Key waveforms at 100% load condition. (a) Conventional PSFB converter and (b) proposed converter.

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Fig. 8. Efficiency comparison.

참고문헌

  1. H. K. Yoon, S. K. Han, G. W. Moon, and M. J. Youn, "Zero-current switching two-transformer phase-shifted full-bridge converter using voltage ripple," in 2005 KIPE Power Electronics Annual Conference, pp. 436-438, Jul. 2005.
  2. W. J. Lee, K. B. Park, T. W. Heo, and G. W. Moon, "Output inductor less phase shift full bridge converter with current stress reduction technique for server power application," in IEEE Power Electronics Specialists Conference, pp. 2517-2522, Jun. 2008.
  3. J. W. Kim, Y. H. Cho, and G. H. Choi, "An analysis of ZVS phase-shifted full-bridge converter's small signal model according to digital sampling method," in 2015 KIPE Power Electronics Annual Conference, pp. 167-174, Jul. 2015.
  4. Y. D. Kim, K. M. Cho, D. Y. Kim, C. E. Kim, and G. W. Moon, "A small conduction loss phase-shifted full-bridge converter for server power supply," in 2011 KIPE Power Electronics Annual Conference, pp. 372-373, Jul. 2011.
  5. S. Cetin and A. Astepe, "A phase shifted full-bridge converter design for electrical vehicle battery charge applications based on wide output voltage range," in IEEE International Conference on Applied Electronics, pp. 51-56, Sep. 2016.
  6. B. Yang, J. L. Duarte, W. Li, K. Yin, X. He, and Y. Deng, "Phase-shifted full-bridge converter featuring ZVS over the full load range," IEEE Industrial Electronics Society, pp. 644-649, Nov. 2010.