반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

DAB 컨버터용 전력 변압기의 누설 인덕턴스를 포함한 내부 전력 손실 분석에 관한 연구

A Study on the Analysis of Internal Power Loss Including Leakage Inductance of Power Transformer for DAB Converter

  • 유정상 (청주대학교 전자공학과) ;
  • 안태영 (청주대학교 전자공학과) ;
  • 길용만 (청주대학교 전자공학과)
  • Yoo, Jeong Sang (Department of Electronic Engineering, Cheongju University) ;
  • Ahn, Tae Young (Department of Electronic Engineering, Cheongju University) ;
  • Gil, Yong Man (Department of Electronic Engineering, Cheongju University)
  • 투고 : 2022.06.07
  • 심사 : 2022.06.23
  • 발행 : 2022.06.30
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초록

In this paper, a power loss analysis technique of a high-frequency transformer of a bidirectional DAB (Dual Active Bridge) converter is reported. To miniaturize the transformer of the dual active bridge converter, a resonant inductor was designed with an air gap included low-coupled rate state core to combine leakage inductor with the resonant inductor which is required for soft-switching. In this paper, leakage inductance and magnetizing inductance, core material, type of winding and winding method are included in the dual active bridge transformer loss analysis process to enable optimal design at the initial design stage. Transformer loss analysis for dual active bridge with a switching frequency of 200 kHz and maximum output of 5 kW was executed, and elements necessary for design based on the number of turns on the primary side were graphed while maintaining the transformer turns ratio and window area. In particular, it was possible to determine the optimal number of turns and thickness of the transformer, and ultimately, the total loss of the transformer could be estimated.

키워드

과제정보

이 연구는 2 02 2년도 산업통상자원부 및 산업기술평가관리원 (KEIT) 연구비 지원에 의한 연구임(20018577).

참고문헌

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