电力系统保护与控制2025，Vol.53Issue(24)：78-88,11.DOI:10.19783/j.cnki.pspc.250083
基于双重移相控制的双有源桥全局最小电流应力控制策略
Global minimum current stress control strategy for dual-active-bridge converters based on dual phase-shift control
摘要
Abstract
Current stresses in dual-active-bridge(DAB)converters increase rapidly in the event of voltage mismatch between the two sides.Excessive current stress not only complicates the selection of switching devices,but also reduces the efficiency and operational safety of the DAB.To address this issue,a global minimum current stress control strategy based on dual phase-shift(DPS)control is proposed.First,the feasible region of the phase-shift pairs under DPS control is analyzed.Based on the analytical expressions of transmission power and current stress in each region,an optimization model for minimizing DAB current stress over the full power range is established.For the multi-region and non-convex current stress optimization problem,the global optimal solution region is first identified by analyzing the results obtained from a genetic algorithm.Then,using the KKT conditions,an analytical expression for the global optimal solution is derived,leading to the proposed DPS-based minimum current stress control strategy for DAB converters.Subsequently,the soft-switching characteristics of the DAB under the optimized control are analyzed.Finally,the correctness and effectiveness of the theoretical analysis and the proposed control strategy are verified through experiments.关键词
双有源桥变换器/双重移相/电流应力/遗传算法/KKT条件法Key words
dual-active-bridge converter/dual phase shift/current stress/genetic algorithm/KKT conditions引用本文复制引用
赵郅毅,荆龙,续文政,吴学智,张东升..基于双重移相控制的双有源桥全局最小电流应力控制策略[J].电力系统保护与控制,2025,53(24):78-88,11.基金项目
This work is supported by the National Key Research and Development Program of China(No.2023YFC3807000). 国家重点研发计划项目资助(2023YFC3807000) （No.2023YFC3807000）
