广东电力2025，Vol.38Issue(1)：83-90,8.DOI:10.3969/j.issn.1007-290X.2025.01.009
基于SQP算法的双有源桥变换器的电流有效值优化控制策略
Current Effective Value Optimization Control Strategy for Dual Active Bridge Converter Based on SQP Algorithm
摘要
Abstract
When the input and output voltages of a dual active bridge converter do not match,significant backflow power is generated internally,accompanied by a significant increase in the primary and secondary currents of the transformer,resulting in a decrease in efficiency.In response to this,based on the dual phase shift modulation method,this paper studies the transmission efficiency of dual active bridges under voltage mismatch.For the complex nonlinear current effective value mathematical model,the paper proposes a dual active bridge converter inductor current effective value optimization method based on sequential quadratic programming(SQP)algorithm,which can improve the operating efficiency of the dual active bridge by reducing the inductor current effective value.Firstly,it establishes a mathematical model for the effective value of inductor current in a dual active bridge converter.Next,it analyzes the soft switching characteristics under dual phase shifting,and combines the boundary conditions and topology parameters of the dual active bridge to clarify the constraint conditions.Based on the SQP algorithm,it solves the phase shifting angle combination parameters when the effective value of the inductor current is the lowest.Finally,the paper builds simulation examples on Simulink,completes simulation experiments under conditions of almost matching voltage and severe voltage mismatch,and compares with other control strategies.The experimental results show that compared to single phase modulation,the effective current value can be reduced by 11.5%.Compared to optimizing current stress and reflux power,optimizing the effective value of current can improve efficiency by 0.76 and 0.92 percentage points,respectively.This validates the correctness of the theoretical analysis and the effectiveness of the proposed strategy.关键词
双有源桥/电流有效值/序列二次规划算法/软开关/双重移相Key words
dual active bridge(DAB)/current effective value/sequential quadratic programming algorithm/soft switch/dual phase shifted(DPS)分类
动力与电气工程引用本文复制引用
吴凡煜,刘沈全,龚厉川,曾德辉,王钢..基于SQP算法的双有源桥变换器的电流有效值优化控制策略[J].广东电力,2025,38(1):83-90,8.基金项目
国家自然科学基金项目(52207103) （52207103）
广东省基础与应用基础研究基金项目(2023A1515010343) （2023A1515010343）
