三重移相下的双有源桥变换器结合ZVS的最小电流应力控制  

Minimum current stress control of dual active bridge converter combined with ZVS under triple phase shift

作　　者：孙标广[1,2] 邓旭哲 SUN Biaoguang;DENG Xuzhe(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454003,China;Henan Key Laboratory of Intelligent Detection and Control of Coal Mine Equipment,Jiaozuo 454003,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003 [2]河南省煤矿装备智能检测与控制重点实验室,河南焦作454003

出　　处：《电工电能新技术》2025年第1期45-56,共12页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金项目(U1804143)。

摘　　要：为了在减小双有源桥(DAB)变换器电流应力的同时兼顾开关管的软开关(ZVS),本文提出一种三重移相下的双有源桥变换器结合ZVS的最小电流应力控制策略。该策略首先引入三重移相控制,并结合DAB变换器在此控制模式下的数学模型与功率特性分析,发现三重移相控制能够使DAB变换器在全功率范围内高效传输能量。为了寻求电流应力最小化的最优解,该策略采用基于Karush-Kuhn-Tucker(KKT)条件的优化方法并充分考虑DAB变换器的ZVS特性。在全功率范围内成功确定了能够实现电流应力最小化的最优移相角组合。将本文提出的控制策略与传统的三重移相控制策略进行对比分析,所提策略在实现所有开关管ZVS能力的同时,显著降低了电流应力,从而大幅提升了DAB变换器的整体性能与效率。最后,基于本文所提控制策略搭建了实验样机,实验结果表明其在降低电流应力和实现ZVS方面的有效性。In order to reduce the current stress of the double-active-bridge(DAB) converter while taking into account the soft switching of the switching tubes zero-voltage switch(ZVS),this paper proposes a triple-phase-shifted double-active-bridge converter combined with the ZVS to minimize the current stress control strategy.The strategy first introduces the triple phase-shift control and combines the mathematical model and power characterization of the DAB converter under this control mode,and it is found that the triple phase-shift control enables the DAB converter to transfer energy efficiently in the full power range.In order to seek the optimal solution for current stress minimization,the strategy adopts the optimization method based on the Karush-Kuhn-Tucker(KKT) condition and fully considers the ZVS characteristics of the DAB converter.The optimal phase-shift angle combination that can minimize the current stress is successfully determined in the full power range.Comparing and analyzing the proposed control strategy with the traditional triple phase-shift control strategy,the proposed strategy significantly reduces the current stress while realizing the ZVS capability of all the switching tubes,which significantly improves the overall performance and efficiency of the DAB converter.Finally,an experimental prototype is built based on the proposed control strategy,and the experimental results demonstrate its effectiveness in reducing current stress and realizing ZVS.

关 键 词：DAB变换器 三重移相控制 最小电流应力 零电压开关 KKT 

分 类 号：TM46[电气工程—电器]