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

The Korean Institute of Power Electronics (전력전자학회)
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Optimal Design of Resonant Network Considering Power Loss in 7.2kW Integrated Bi-directional OBC/LDC

7.2kW급 통합형 양방향 OBC/LDC 모듈의 전력 손실을 고려한 공진 네트워크 최적 설계

  • Song, Seong-Il (Institute for Advanced Engineering AI & Mechanical Center) ;
  • Noh, Jeong-Hun (Institute for Advanced Engineering AI & Mechanical Center) ;
  • Kang, Cheol-Ha (Daewoo Electronic Components Co. Ltd R&D Center) ;
  • Yoon, Jae-Eun (Daewoo Electronic Components Co. Ltd R&D Center) ;
  • Hur, Deog-Jae (Institute for Advanced Engineering AI & Mechanical Center)
  • Received : 2019.09.10
  • Accepted : 2019.11.12
  • Published : 2020.02.20
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Abstract

Integrated bidirectional OBC/LDC was developed to reduce the volume for elements, avoid space restriction, and increase efficiency in EV vehicles. In this study, a DC-DC converter in integrated OBC/LDC circuits was composed of an SRC circuit with a stable output voltage relative to an LLC circuit using a theoretical method and simulation. The resonant network of the selected circuit was optimized to minimize the power loss and element volume under constraints for the buck converter and the battery charging range. Moreover, the validity of the optimal model was verified through an analysis using a theoretical method and a numerical analysis based on power loss at the optimized resonant frequency.

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References

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