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

The Korean Institute of Power Electronics (전력전자학회)
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A Phase-Shifted Full-Bridge Converter With a New Rectifier Circuit for Reducing Circuiting Current

순환전류 감소를 위한 새로운 정류회로를 갖는 위상천이 풀브리지 컨버터

  • Choi, Byoung-Gi (Dept. of Electrical Engineering, Myongji University) ;
  • Lee, Woo-seok (Dept. of Electrical Engineering, Myongji University) ;
  • Lee, Il-Oun (Dept. of Electrical Engineering, Myongji University)
  • Received : 2020.11.30
  • Accepted : 2021.01.28
  • Published : 2021.06.20
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Abstract

This research proposes a new rectifier circuit to reduce the circulating current of a phase-shifted full bridge converter. The proposed circuit is a structure in which the output inductor of the secondary rectifier circuit is changed to a coupled inductor in the phase-shifted full bridge with the existing center-tapped rectifier. The parts are rearranged after adding a diode. After applying the proposed circuit, the circulating current to the primary current of the transformer and the voltage stress of the rectifier diode on the secondary side of the transformer are reduced. Accordingly, the snubber loss of the rectifier is improved. By reducing the circulating current and snubber loss, the circuit achieves higher efficiency than conventional circuits. In this research, we present the structure of the proposed circuit, its strengths, and the analysis results from experiments. Furthermore, its effectiveness is verified through the experimental results of a prototype converter with an input of 300-400 V and an output of 50 V/1 kW.

Keywords

Acknowledgement

본 연구는 2020년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임. (NRF-2020R1D1A1B07048209)

References

  1. J. A. Sabate, V. Vlatkovic, R. B. Ridley, F. C. Lee, and B. H. Cho, "Design considerations for high-voltage high-power full-bridge zero-voltage-switched PWM converter," in Fifth Annual Proceedings on Applied Power Electronics Conferencand Exposition, Los Angeles, CA, USA, pp. 275-284, 1990.
  2. K. S. Jeong, Y. C. Lee, H. K. Kim, C. Park, S. H. Kim, and S. S. Hong, "Switch control method for phase-shift full-bridge converter using active clamp circuit procddeings," in Korea Institute of Power Electronics Annual Conference, pp. 163-164, Jul. 2014.
  3. C. Lee and Y. C. Hong, "A study on energy efficiency improvement of ldc recycling load tester," Journal of the Korea Academia-Industrial Cooperation Society, Vol. 17, No. 10, pp. 86-92, 2016. https://doi.org/10.5762/KAIS.2016.17.10.86