Loop-at-a-Time Stability Analysis for Grid-Connected Voltage-Source Converters

被引：16

作者：

Zhang, Hongyang ^{[1
,2
]}

Harnefors, Lennart ^{[2
,3
]}

Wang, Xiongfei ^{[4
]}

Hasler, Jean-Philippe ^{[5
]}

Ostlund, Stefan ^{[2
]}

Danielsson, Christer ^{[5
]}

Gong, Hong ^{[4
]}

机构：

[1] ABB Power Grids, S-72164 Vasteras, Sweden

[2] KTH Royal Inst Technol, Div Elect Power & Energy Syst, S-10044 Stockholm, Sweden

[3] ABB Corp Res, S-72178 Vasteras, Sweden

[4] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark

[5] Hitachi ABB Power Grids, S-72164 Vasteras, Sweden

来源：

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS | 2021年 / 9卷 / 05期

关键词：

Stability analysis; Phase locked loops; MIMO communication; Power conversion; Power system stability; Automatic voltage control; Generalized Nyquist stability criterion (GNC); grid-connected voltage-source converters (VSCs); loop-at-a-time (LAAT); multiple-input-multiple-output (MIMO); single-input-single-output (SISO); SYSTEMS; DESIGN;

D O I：

10.1109/JESTPE.2020.3024103

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 instability phenomena caused by converter-grid interactions can be prevented by designing controllers with adequate stability margins. Yet, the multiple-input-multiple-output (MIMO) dynamics of grid-connected voltage-source converters (VSCs) complicate the stability analysis for the controller design. To tackle this challenge, this article presents a loop-at-a-time stability analysis for grid-connected VSCs, which not only shows close correlations with the generalized Nyquist criterion for MIMO systems but also enables to quantify the stability margins of individual closed loops. Moreover, the interactions between the closed loops can be analyzed. Test cases with numerical sensitivity analysis, simulations, and field measurements of a converter validate the theory.

引用

页码：5807 / 5821

页数：15

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