Bifurcation-Based Transient Stability Analysis of Grid-Forming Converters with DC-Link Voltage Controller

被引：1
|
作者：
Luo, Cheng [1 ]
Liu, Teng [2 ]
Wang, Xiongfei [2 ]
Ma, Xikui [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect Engn, Xian, Peoples R China
[2] Aalborg Univ, Dept AAU Energy, Aalborg, Denmark
来源：
2021 IEEE 22ND WORKSHOP ON CONTROL AND MODELLING OF POWER ELECTRONICS (COMPEL) | 2021年
关键词：
Transient stability; grid-forming converters; DC-Link voltage controller; bifurcation theory;
D O I：
10.1109/COMPEL52922.2021.9646045
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：
Transient stability of grid-forming (GFM) converters has drawn increasing research interests in the last few years, while the impact of DC-Link Voltage Controller (DVC) on the transient stability of GFM converters remains an open issue. To bridge this research gap, this paper presents a design-oriented transient stability analysis of GFM converters with DVC. A large-signal model is established first. Based on this model, the parametric effects of DVC on the transient stability are evaluated by phase portraits and further confirmed by simulation tests. It is revealed that the increase of proportional gain of DVC would enhance the transient stability. The mechanism of the parametric effects is theoretically explained based on the bifurcation theory. Finally, experimental tests are performed to validate the effectiveness of the theoretical analysis.
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页数：6
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