基于谐波分析的LCL双有源桥软开关控制方法  

Soft Switch Control Method of LCL Dual Active Bridge Using Harmonic Analysis

作　　者：陈更新 曼苏乐[1] 蒋宇宁 CHEN Geng-xin;Muhammad Mansoor Khan;JIANG Yu-ning(Shanghai Jiao Tong University,Shanghai 200240,China;不详)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海20024 [2]国网江苏省电力有限公司常州供电分公司,江苏常州213000

出　　处：《电力电子技术》2019年第12期9-11,共3页Power Electronics

摘　　要：在此分析了LCL谐振式双有源桥中的电流谐波,并据此提出了新的控制方法,提高了能量传递效率。首先介绍了传统LCL谐振式双有源桥的控制原理,然后在频域内分析了电流谐波产生的原因和各次电流谐波的幅值,并将其转化为时域表示。基于以上对电流谐波的分析,提出新的软开关控制方法。此方法可以实现全负载域的软开关,并且不会引入回流功率。最后通过实验证明了新控制方法的正确性和有效性。The current harmonics in the LCL resonant dual active bridge are analyzed,and a novel modulation algorithm based on the harmonic analysis is proposed to improve the efficiency of power transmission.Firstly,the conventional modulation method of LCL resonant dual active bridge is introduced.The reason and amplitude of the current harmonics are analyzed in frequency domain and time domain,respectively.Based on the analysis,a new modulation method is developed,which achieves soft switch over full load range,and eliminates the back flow power.Finally,the experimental results verify the correctness and effectiveness of this new modulation algorithm.

关 键 词：谐振 双有源桥 软开关 

分 类 号：TN751.2[电子电信—电路与系统]