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논문 기본 정보

자료유형
학술저널
저자정보
Hyun-Jun Choi (Ulsan National Institute of Science and Technology (UNIST)) Jee-Hoon Jung (Ulsan National Institute of Science and Technology (UNIST))
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.11 No.5
발행연도
2016.9
수록면
1,265 - 1,273 (9page)

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As a bi-directional isolated interface for solid state transformer applications, practical design considerations of a dual active bridge (DAB) converter are proposed by means of a detailed mathematical model based on the converter’s steady state operations. The DAB converter is useful in isolated bi-directional power conversion applications due to high performance, high efficiency, and bi-directional control manner. However, design considerations should be taken into account to overcome the disadvantages of DAB converter, such as low efficiency caused by restricted soft switching capability at light load conditions and high circulating current at heavy load conditions. The practical design considerations of the converter’s power stage will be discussed to maximize soft switching capability and to minimize the conduction losses. In addition, to reduce the current stress of the power devices during a cold start sequence, an effective soft start algorithm will be proposed. Experimental results with a 3.3 kW prototype DAB converter will be given in order to validate the effectiveness of the proposed design considerations.

목차

Abstract
1. Introduction
2. Design Methodology
3. Soft Start Algorithm
4. Experimental Results
5. Conclusion
References

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