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A Study on LLC Resonant Transformer Design with the Winding Method of Automatic Type suitable for LLC Resonant Converter

LLC 공진 컨버터에 적합한 자동화 권선 LLC 공진 변압기 설계에 관한 연구

  • Bae, Jun-Hyung (Flight Control System Integration Team KFX Program Division, Korea Aerospace Industries, LTD.) ;
  • Kim, Jong-Hae (School of Electronic and Electrical Engineering, Daegu Catholic University)
  • Received : 2019.09.12
  • Accepted : 2019.09.24
  • Published : 2019.09.30

Abstract

This paper presents the comprehensive transformer design methodology with the winding method of automatic type suitable for LLC resonant converter. The problem with conventional LLC resonant transformer is that it is difficult to implement the winding method of automatic type because all windings are wound in one bobbin. Therefore, the LLC resonant transformer, which is capable of the winding method of automatic type to multiple section bobbin without insulation tape and barrier tape, is proposed in this paper and the design procedure of the proposed LLC resonant transformer is also shown. Modeling and analysis of the proposed LLC resonant transformer using Maxwell 3D simulation tool are described in detail and a protype 150W LLC resonant converter using the proposed LLC resonant transformer manufactured by 3D modelling is also verified through the experimental test.

본 논문은 LLC 공진 컨버터에 적합한 자동화 권선 변압기 설계에 대한 포괄적인 방법에 대해서 나타낸다. 기존의 LLC 공진 변압기는 하나의 보빈에 모든 권선이 감겨져 있기 때문에 자동화 권선 구현이 어렵다는 문제점이 있다. 따라서 본 논문에서는 절연 테이프와 배리어 테이프가 없이 다중 보빈으로 자동 권선이 가능한 LLC 공진 변압기를 제안하였으며 제안한 LLC 공진 변압기의 설계 절차에 대해서도 나타내었다. Maxwell 3D 시뮬레이션 툴을 이용하여 제안한 LLC 공진 변압기의 해석 및 모델링을 상세하게 기술되었으며 또한 3D 모델링에 의해 제작된 제안한 LLC 공진 변압기를 이용하여 프로타입 150W LLC 공진 컨버터를 실험을 통해 확인하였다.

Keywords

References

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  2. Yang, B. "Integrated magnetic for LLC resonant converter," Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE, vol.1, pp.346-351 2002. DOI: 10.1109/APEC.2002.989269