基于新型双重移相下双有源桥最小电流应力优化方法

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关键词：双有源全桥变换器；新型双重移相；电流应力；约束条件；优化控制DOI：10.15938/j. emc.2025.09.012中图分类号：TM46 文献标志码：A 文章编号：1007-449X（2025）09-0127-11

Abstract：A segmented current stress control strategy based on a novel dual phase-shift modulation was proposed to address the problem of excessive current stress in the light-load and half-load regions of the dual active full-bridge converter under the dual phase-shift control method.First，the internal and external phase-shift angles were redefined based on the on-of sequence of the switching tubes，and the switching state with the fastest inductor current growth rate in the traditional double phase-shift was avoided by a reasonable sequence combination.Then，the mathematical relationship between inductor current stress and phase shift angle，transmisson power and voltage conversion ratio in two operating modes of the converter was analyzed，and the optimal phase shift angle was found through optimization search，and the segmented current stress optimization control was performed for the transmisson power interval according to the constraints of phase shift angle in diffrent modes，and the closed-loop control method of output voltage with direct power control was designed. Comparing and analyzing with the traditional dual phaseshift control strategy under the given transmisson power conditions，the control strategy has a significant advantage in suppressing current stress when the converter operates in the non-heavy-duty region and the voltage conversion ratio is large.Finally，an experimental prototype was built to verify correctness and feasibility of the theoretical analysis.

Keywords：dual active full-bridge converter；novel double phase shift；current stress；constraints ；optimal control

0引言

近年来，随着传统化石能源的短缺和可再生能源的快速发展，分布式新能源发电系统[]、电动及混合动力汽车和中高压微电网接口[2-3]等相关领域受到广泛关注和深入研究。（剩余14140字）