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Multi-objective Unified Optimal Control Strategy for DAB Converter with Triple-phase-shift Control
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Jinhui ZENG, Yao RAO, Zheng LAN, Dong HE
Journal of Power Supply | 2024, 22(5) : 74 - 85
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Journal of Power Supply | 2024, 22(5): 74-85
• DC-DC Converters •
Multi-objective Unified Optimal Control Strategy for DAB Converter with Triple-phase-shift Control
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Jinhui ZENG, Yao RAO, Zheng LAN, Dong HE
Affiliations
  • School of Electrical and Information Engineering Hunan University of Technology Zhuzhou 412007 China
Published: 2024-09-30 doi: 10.13234/j.issn.2095-2805.2024.5.74
Outline
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To solve the problems of large current stress, difficult soft switching of all switches and slow dynamic response of dual active bridge (DAB) converters, a multi-objective unified optimal control strategy based on triple-phase-shift(TPS) control is proposed. The forward power flow global mode of TPS control is analyzed, and three high-efficiency modes are selected to establish the analytical models of current stress and soft switching. Combined with these models, the optimal phase-shift ratio combination and minimum current stress in different modes are derived using the cost function optimization equation, which makes the switches operate within the zero-voltage-switching power constraint range. At the same time, the virtual power component is introduced in the process of efficiency optimization. A small-signal model is constructed, and the influence of small disturbance of different state variables on output voltage is clarified. Experimental results show that the proposed control strategy can not only reduce the current stress of the DAB converter and make all switches realize zero-voltage-switching, but also improve the dynamic performance of output voltage in the full power range.

Dual active bridge (DAB) converter  /  triple-phase-shift(TPS) control  /  current stress  /  soft switching  /  virtual direct power control
Jinhui ZENG, Yao RAO, Zheng LAN, Dong HE. Multi-objective Unified Optimal Control Strategy for DAB Converter with Triple-phase-shift Control[J]. Journal of Power Supply, 2024 , 22 (5) : 74 -85 . DOI: 10.13234/j.issn.2095-2805.2024.5.74
Funding
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  • National Natural Science Foundation of China(51807058)
  • Natural Science Foundation of Hunan Province(2020JJ6082)
Appendix
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Year 2024 volume 22 Issue 5
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352
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Article Info
doi: 10.13234/j.issn.2095-2805.2024.5.74
  • Receive Date：2021-09-08
  • Online Date：2025-07-20
  • Published：2024-09-30
Article Data
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History
  • Received：2021-09-08
  • Revised：2021-10-18
  • Accepted：2021-10-31
Funding
National Natural Science Foundation of China(51807058)
Natural Science Foundation of Hunan Province(2020JJ6082)
Affiliations
    School of Electrical and Information Engineering Hunan University of Technology Zhuzhou 412007 China
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