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Optimization Strategy of Power Return and Loss for Series Resonant DAB Converter
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Ning LI  Member, CPSS1, Jialin YANG1, Bowen TIAN1, 2, Jie LI1, Yan ZHANG3
Journal of Power Supply | 2025, 23(5) : 1 - 9
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Journal of Power Supply | 2025, 23(5): 1-9
• DC-DC Converters •
Optimization Strategy of Power Return and Loss for Series Resonant DAB Converter
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Ning LI  Member, CPSS1, Jialin YANG1, Bowen TIAN1, 2, Jie LI1, Yan ZHANG3
Affiliations
  • 1.School of Electrical Engineering, Xi'an University of Technology, Xi'an 710043, China
  • 2.Xi'an Power Supply Bureau, Xi'an 710000, China
  • 3.School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710048, China
Published: 2025-09-30 doi: 10.13234/j.issn.2095-2805.2025.5.1
Outline
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A series resonant DAB converter (SRDAB) is taken as the research object in this paper, and an efficiency optimization strategy for reducing the power return is proposed to improve the converter's operation efficiency under the phase shift modulation strategy. First, a mathematical model of the transmission efficiency of SRDAB is established under phase shift modulation, the mathematical expression for power return during its operation is derived, and the parameters that affect the power return are obtained. Second, the mathematical expressions for the transient and on-state losses generated during the operation of the converter are formulated, a mathematical model for its operation efficiency is constructed, and the relationship of its efficiency with the phase shift ratio and the ratio of switching frequency to resonant frequency is obtained, thus optimizing the two key parameters to further improve the operation efficiency. Finally, the correctness and effectiveness of the proposed efficiency optimization strategy were verified by performing simulations and building experimental circuits.

Series resonant DAB (SRDAB) converter  /  loss calculation  /  efficiency optimization  /  power return
李宁中国电源学会会员, 杨家林, 田博文, 李洁, 张岩. 串联谐振型DAB变换器回流功率及损耗优化策略. 电源学报, 2025 , 23 (5) : 1 -9 . DOI: 10.13234/j.issn.2095-2805.2025.5.1
Ning LI, Jialin YANG, Bowen TIAN, Jie LI, Yan ZHANG. Optimization Strategy of Power Return and Loss for Series Resonant DAB Converter[J]. Journal of Power Supply, 2025 , 23 (5) : 1 -9 . DOI: 10.13234/j.issn.2095-2805.2025.5.1
Funding
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  • National Natural Science Foundation of China(52177193)
  • Key Research and Development Program of Shaanxi Province(2022GY-182)
Appendix
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Year 2025 volume 23 Issue 5
40
11
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.5.1
  • Receive Date：2023-02-08
  • Online Date：2026-10-26
  • Published：2025-09-30
Article Data
Affiliations
History
  • Received：2023-02-08
  • Revised：2023-03-29
  • Accepted：2023-04-13
Funding
National Natural Science Foundation of China(52177193)
Key Research and Development Program of Shaanxi Province(2022GY-182)
Affiliations
    1.School of Electrical Engineering, Xi'an University of Technology, Xi'an 710043, China
    2.Xi'an Power Supply Bureau, Xi'an 710000, China
    3.School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710048, China
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