摘要
传统单移相(SPS)控制下的双有源桥(DAB)DC/DC变换器在输入输出电压不匹配时运行状态较差,存在较大的电流应力。此处提出了一种扩展移相(EPS)的控制方法,采用优化调制策略,在一定传输功率下寻求最优的移相比组合使得电流应力达到最小,随着电压转换比的增大,此种优化调制策略效果更佳明显。实验结果验证了优化策略的有效性。
The dual active bridge(DAB) DC/DC converter under the traditional single-phase-shift(SPS) control has a poor operating state when the input and output voltage is not matched and there is a large current stress.An extended-phase-shift(EPS)control method is proposed which uses optimal modulation strategy to seek the optimal shift in a certain transmission power.Compared with the combination,the current stress is minimized,as the voltage conversion ratio becomes larger,the effect of this optimized modulation strategy is more effective.The experimental results verify the effectiveness of optimization strategy.
作者
郭华越
张兴
赵文广
高帅
GUO Hua-yue;ZHANG Xing;ZHAO Wen-guang;GAO Shuai(Hefei University of Technology,Hefei 230009,China)
出处
《电力电子技术》
CSCD
北大核心
2019年第3期120-122,共3页
Power Electronics
关键词
变换器
扩展移相
电流应力
converter
extended-phase-shift
current stress
