Modeling and Harmonic Instability Analysis of the PET-Based Train-Grid System

被引：1

作者：

Lin, Chunxu ^{[1
]}

Liu, Dan ^{[1
]}

Wang, Huimin ^{[1
]}

Wang, Kexin ^{[1
]}

Zuo, Yun ^{[1
]}

Deng, Qingli ^{[1
]}

Mu, Junwen ^{[1
]}

Ge, Xinglai ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu, Peoples R China

来源：

2022 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2022年

基金：

中国国家自然科学基金;

关键词：

power electronic transformers (PET); impedance modeling; harmonic instability analysis; traction system;

D O I：

10.1109/ECCE50734.2022.9947684

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The power electronic transformers (PET) show huge attractiveness in railway traction system due to their advantages, e.g., high efficiency and light weight. However, in the PET-based train-grid (PTG) system, the issue of harmonic instability remains, and few efforts have been made toward this problem. To address this, in this paper, the complete impedance model of the PTG system is first established in the dq-frame. Then, the frequency-sweep method is accordingly implemented to verify the accuracy of the model. With this, considering the interactive influence of train-grid impedance, the impedance-based stability criterion is applied to analyze the system stability. Especially, the cause and influence law of harmonic instability are explored in the PTG system. Finally, the hardware-in-the-loop (HIL) tests are conducted to verify the effectiveness of the discussions.

引用

页数：6

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