中国电机工程学报2024，Vol.44Issue(10)：4050-4061,中插25,13.DOI:10.13334/j.0258-8013.pcsee.230495
基于励磁电流补偿与混合移相调制的高频DAB变换器全范围ZVS运行策略
A Full Range ZVS Operation Strategy for High-frequency DAB Converters Based on Magnetizing Current Compensation and Hybrid Phase Shift Modulation
李文辉 1杨世华 2龚邻骁 1王简 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
- 2. 上海航天智能装备有限公司,上海市 闵行区 200240
- 折叠
摘要
Abstract
With the widespread utilization of wide bandgap power semiconductor devices,the dual active bridge(DAB)converter with higher switching frequency has brought about greater switching losses,putting higher demands on soft-switching technology.To expand the zero-voltage switching(ZVS)range,the ZVS model and the conventional inductor current global optimal condition(GOC)method are analyzed,and an optimal phase shift modulation scheme combined with the magnetizing current is proposed to realize the 8-ZVS operation(ZVS operation of all switches)in the full power range.In this paper,a more accurate ZVS model is obtained by considering the non-linear characteristics of the switch's junction capacitors and the dead time limit,and the ZVS model with the introduction of the magnetizing current is derived.Furthermore,the proposed control scheme features a seamless modes transition,by which the RMS inductor current also can be quasi-optimal.Finally,a 6 kW/150 kHz DAB converter prototype is built to verify the effectiveness of the theoretical analysis.Experimental results show that the 8-ZVS operation can be realized in any mode and any working condition,and the system's operational efficiency is obviously improved,especially under light and medium loads.关键词
高频双有源桥变换器/电感电流全局条件准最优/励磁电流补偿/零电压开关Key words
high-frequency dual active bridge converter/inductor current quasi-global optimal condition/magnetizing current compensation/zero-voltage switching分类
信息技术与安全科学引用本文复制引用
李文辉,杨世华,龚邻骁,王简,王勇..基于励磁电流补偿与混合移相调制的高频DAB变换器全范围ZVS运行策略[J].中国电机工程学报,2024,44(10):4050-4061,中插25,13.
