μ Analysis on the DC-Link Voltage Control Stability of the Weak-Grid-Connected VSC

被引：0
|
作者：
Chen, Yong [1 ]
Cheng, Xu [1 ]
Chen, Jianfu [2 ]
Zhang, Li [3 ]
Zhao, Xiaoyan [2 ]
Jin, Xin [4 ]
机构：
[1] Guangdong Power Grid Co Ltd, Zhuhai Power Supply Bur, DC Power Distribut & Consumpt Technol Res Ctr, Zhuhai, Peoples R China
[2] Guangdong Power Grid Co Ltd, Zhuhai Power Supply Bur, Zhuhai, Peoples R China
[3] Yunnan Power Grid Co Ltd, Ruili Power Supply Bur, Ruili, Peoples R China
[4] Univ Macau, State Key Lab Internet Things Smart City, Taipa, Macao Sar, Peoples R China
来源：
2024 IEEE 2ND INTERNATIONAL CONFERENCE ON POWER SCIENCE AND TECHNOLOGY, ICPST 2024 | 2024年
关键词：
voltage source converter; weak grid; DC-voltage control; structured singular value; uncertainty;
D O I：
10.1109/ICPST61417.2024.10602482
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：
Uncertainties accompany practical system inherently complicate the stability analysis for the weak-grid-connected voltage source converter (VSC) under DC-link voltage control (DVC). In this paper, structured singular value (SSV, also called mu)-based approach is proposed to explore the stability region of this (multi-input-multi-output) MIMO system considering parametric uncertainties. First, system small-signal model is established, and the generalized uncertain model is formulated using linear fractional transformation (LFT) algorithm. Then, system stability boundary is determined by the comparison between the value of mu and the criterion, under multiple parametric perturbations. Finally, eigenvalues analysis and time-domain simulation results validate the predictions accuracy of the proposed mu approach.
引用
收藏
页码：225 / 230
页数：6
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