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논문 기본 정보

자료유형
학술저널
저자정보
Yun Zhang (Tianjin University) Yongping Gao (Tianjin University) Jing Li (University of Nottingham) Mark Sumner (University of Nottingham) Ping Wang (Tianjin University) Lei Zhou (Tianjin University)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.16 No.6
발행연도
2016.11
수록면
2,035 - 2,044 (10page)

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초록· 키워드

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In order to match the voltages between high voltage battery stacks and low voltage super-capacitors with a high conversion efficiency in hybrid energy sources electric vehicles (HESEVs), a high ratio bidirectional DC-DC converter with a synchronous rectification H-Bridge is proposed in this paper. The principles of high ratio step-down and step-up operations are analyzed. In terms of the bidirectional characteristic of the H-Bridge, the bidirectional synchronous rectification (SR) operation is presented without any extra hardware. Then the SR power switches can achieve zero voltage switching (ZVS) turn-on and turn-off during dead time, and the power conversion efficiency is improved compared to that of the diode rectification (DR) operation, as well as the utilization of power switches. Experimental results show that the proposed converter can operate bidirectionally in the wide ratio range of 3~10, when the low voltage continuously varies between 15V and 50V. The maximum efficiencies are 94.1% in the Buck mode, and 93.6% in the Boost mode. In addition, the corresponding largest efficiency variations between SR and DR operations are 4.8% and 3.4%. This converter is suitable for use as a power interface between the battery stacks and super-capacitors in HESEVs.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. HIGH RATIO BIDIRECTIONAL CONVERTER AND OPERATIONS
Ⅲ. SMALL-SIGNAL MODELING AND PARAMETERS DESIGN
Ⅳ. EXPERIMENTAL VERIFICATION AND ANALYSIS
Ⅴ. CONCLUSIONS
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