A Current Balance Method Based on Phase-Shift Control Between Modules in Three-Phase Half-Bridge LLC Converter

被引：0
|
作者：
Shi L. [1 ]
Liu B. [1 ]
Duan S. [1 ]
机构：
[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 21期
关键词：
Current balance; Interleaving strategy; Phase shift control; Three-phase LLC converter;
D O I：
10.19595/j.cnki.1000-6753.tces.181272
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The multi-phase LLC converter has the problem of unbalanced phase current due to the tolerance of resonant parameters of each phase. A current balance control strategy is proposed for three-phase half-bridge LLC converter. Based on the method of phase shift modulation between modules and the structure of three phase midpoint floating LLC converter, the proposed strategy can regulate the amplitude and phase of the midpoint voltage to realize three-phase current sharing. The influence of phase shift angle between modules to the midpoint voltage is analyzed and the control strategy for three-phase current sharing is proposed accordingly. The relationship between the current balance control loop and the actual phase shift angle is derived. The experimental results verify the correctness and effectiveness of the proposed strategy. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
引用
收藏
页码：4551 / 4558
页数：7
相关论文
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