Double Fundamental Frequency Power Decoupling Control Strategy for Triple-port Power Electronic Transformer Under Unbalanced Loads

被引：0
|
作者：
Zheng D. [1 ]
Nian H. [1 ]
Li L. [2 ]
Sun D. [1 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang Province
[2] State Grid Jiangsu Electric Power Electric Power Research Institute, Nanjing, 211100, Jiangsu Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 11期
基金：
国家重点研发计划;
关键词：
AC/DC hybrid micro grid; Double-frequency power components; Power decoupling control; Triple-port power electronic transformer;
D O I：
10.13334/j.0258-8013.pcsee.190297
中图分类号：
学科分类号：
摘要：
Power electronic transformer (PET) has been increasingly investigated in the AC/DC hybrid micro power system as the power flexible interface of distributed renewable energy power generation equipment and AC/DC load. Intermittent fluctuation of distributed power supply and unbalanced AC loads are important factors to deteriorate the power quality of PET ports. The power coupling effect among multiple PET ports can degrade the normal operation of PET system. Therefore, it is of great significance to investigate the power decoupling control strategy of PET under unbalanced AC loads condition. Aimed at the topology of triple-port PET, the double fundamental power transmission model was built in this paper on the condition of the AC port connected with unbalanced three-phase AC loads, and a double fundamental frequency power decoupling control strategy based on the resonant controller was proposed, which can achieve the decoupled control target on the double fundamental frequency power. Finally, the experimental results based on the hardware-in-loop platform with RT-Lab were given to validate the effectiveness of the strategy. © 2020 Chin. Soc. for Elec. Eng.
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收藏
页码：3643 / 3653
页数：10
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