Dynamic and static performance optimization of dual active bridge DC-DC converters

• 作者: Nie HOU Wei LI Wensheng SONG Xiao SUN Yutong ZHU
• 来源期刊: 现代电力系统与清洁能源学报(英文)
• 学科: 工学
• 关键词: Current stress Efficiency Dynamic response DUAL ACTIVE bridge(DAB) DC-DC converter Extended phase shift CONTROL Direct power CONTROL
• 年，卷（期）: 2018,（3）
• 页码范围: 607-618
• 页数: 12页
• 分类号: TM46

摘要

High efficiency and fast dynamic response are two main control objectives for dual active bridge(DAB)DC-DC converters. Traditional extended phase shift(EPS)control can significantly enhance the conversion efficiency of DAB DC-DC converters by reducing current stress;however, it cannot fulfill fast dynamic response requirements. In this paper, a novel hybrid control scheme consisting of EPS control and direct power control(DPC),named as EPS-DPC, is proposed. EPS-DPC control has salient features in both efficiency and dynamic performance. In order to verify the outstanding performance of the proposed EPS-DPC scheme, an experimental comparison was carried out on a scale-down DAB DC-DC converter among several control strategies, including single phase shift control with traditional voltage-loop(SPS-TVL), EPS control with traditional voltage-loop(EPSVTL), and EPS-DPC. Experimental results have been high consistent with theoretical analysis, and verified these advantages of the proposed EPS-DPC scheme.