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<p>This study optimizes the unified phase shift technique to minimize peak current in Dual-Active-Bridge (DAB) converters, enhancing efficiency and reliability. Utilizing a 2.4 kW prototype, this research employs a three-degree-of-freedom control strategy, leveraging the Karush–Kuhn–Tucker optimization method to identify optimal phase shift configurations that reduce current stress and improve overall efficiency. A comprehensive analysis of various cases reveals that proper optimization is crucial to surpassing two-degree-of-freedom performance. The study provides valuable insights into the unified phase shift technique's potential, clarifying trade-offs between efficiency, peak current, and control complexity, and facilitating the design of more efficient and reliable DAB converters through optimal phase shift determination by mathematical, simulation and experimental validations.</p>

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Investigative study on peak current reduction with unified phase shifting technique in DAB converter

  • 期刊论文

  • 发表日期：

    2025年11月24日

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  • Nidhi Chandrakar,
  • Ch Chandra Sekhar,
  • S. Mageshwari,
  • S. Arul Daniel

摘要

This study optimizes the unified phase shift technique to minimize peak current in Dual-Active-Bridge (DAB) converters, enhancing efficiency and reliability. Utilizing a 2.4 kW prototype, this research employs a three-degree-of-freedom control strategy, leveraging the Karush–Kuhn–Tucker optimization method to identify optimal phase shift configurations that reduce current stress and improve overall efficiency. A comprehensive analysis of various cases reveals that proper optimization is crucial to surpassing two-degree-of-freedom performance. The study provides valuable insights into the unified phase shift technique's potential, clarifying trade-offs between efficiency, peak current, and control complexity, and facilitating the design of more efficient and reliable DAB converters through optimal phase shift determination by mathematical, simulation and experimental validations.