中国电机工程学报2024，Vol.44Issue(4)：1517-1533,中插22,18.DOI:10.13334/j.0258-8013.pcsee.223036
基于多目标优化的高频DAB变换器混合多重移相控制策略
Hybrid Phase Shift Control Strategy for High-frequency DAB Converter Based on Multi-objective Optimization
龚邻骁 1李文辉 1徐军忠 1李厚基 1王勇1
作者信息
- 1. 上海交通大学电气工程系,上海市 闵行区 200240
- 折叠
摘要
Abstract
With the increasing of the dual active full bridge(DAB)converter's operating frequency,the proportion of active semiconductors'switching loss is prominent,resulting in the fact that the single-objective optimization strategies based on the backflow power,peak or RMS inductor current are gradually losing the efficiency advantages.To improve the high-frequency operation efficiency,this paper carries out a quantitative analysis of optimal operation modes and optimization objectives of DAB,and further proposes a control scheme by which the quasi-optimal inductor RMS current and wide zero voltage switching(ZVS)operation can be realized simultaneously.Specifically,the ZVS operation of all switches can be realized in light and heavy loads,and the ZVS operation of six switches can be achieved in medium load.Furthermore,for the reliability of ZVS operation,the unified current expressions required for the ZVS process are derived based on the charge exchange and dead time.The ZVS resonance process is linearized in this paper,and the ZVS current can be combined with the phase-shifting mode,by which the realization of ZVS of all switches in all modes can be guaranteed.Finally,a 6.6 kW/150 kHz SiC experimental platform is built,and the experimental results show that the switching loss and conduction loss can be reduced simultaneously by the multi-objective optimization strategy,effectively improving the operation efficiency of DAB converter at high frequency.关键词
高频双有源全桥变换器/电感电流有效值准最优/宽软开通范围/软开通电流Key words
high-frequency dual active bridge converter/inductor RMS current/wide zero voltage switching(ZVS)range/ZVS current分类
信息技术与安全科学引用本文复制引用
龚邻骁,李文辉,徐军忠,李厚基,王勇..基于多目标优化的高频DAB变换器混合多重移相控制策略[J].中国电机工程学报,2024,44(4):1517-1533,中插22,18.
