基于超螺旋滑模控制的DAB变换器应力优化  

Stress Optimization of DAB Converter Based on Super Twisting Sliding Mode Control

作　　者：钟健 关维德 陆俊杰 王旭红[1] ZHONG Jian;GUAN Wei-de;LU Jun-jie;WANG Xu-hong(Changsha University of Science and Technology,School of Electrical and Information Engineering,Changsha 410114,China)

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410114

出　　处：《电力电子技术》2025年第2期107-110,共4页Power Electronics

基　　金：湖南省教育厅科学研究项目(22A0213)。

摘　　要：针对在传统的单移相(SPS)控制下的双有源桥(DAB)DC/DC变换器,在工作时会产生较大的电感电流应力的问题,本文提出了一种基于双重移相(DPS)调制的超螺旋滑模控制(STSMC)方法,能够有效降低其电流应力。首先,分析DAB DC/DC变换器在DPS控制方法下的两种工作模式,得出传输功率、电流应力特性及功率关系,搭建DAB的降阶模型;然后,将电流应力作为优化目标,选择拉格朗日乘数法求出最优的移相比,实现电流应力优化,并引入STSMC,降低系统的抖振;最后,在仿真和实验中,将所提控制策略与传统的PI控制方法相比较,验证了该方法的有效性和性能优势。A super twisting sliding mode control(STSMC)method is proposed based on dual phase shift(DPS)modu-lation to effectively reduce the current stress of a dual active bridge(DAB)DC/DC converter under traditional single phase shift(SPS)control,which generates significant inductance current stress during operation.Firstly,analyze the two operating modes of the DAB DC/DC converter under the DPS control method,obtain the transmission power,current stress characteristics,and power relationship,and build a reduced order model of the DAB.Then,the current stress is taken as the optimization objective,and the Lagrange multiplier method is chosen to find the optimal shift ratio to achieve current stress optimization.STSMC is introduced to reduce system chattering.Finally,in simulation and experi-ments,the proposed control strategy is compared with traditional PI control methods,verifying the effectiveness and performance advantages of this method.

关 键 词：变换器 双重移相 超螺旋滑模控制 

分 类 号：TM46[电气工程—电器]