SISO Transfer Functions for Stability Analysis of Grid-Connected Voltage-Source Converters

被引：48

作者：

Zhang, Hongyang ^{[1
,2
]}

Wang, Xiongfei ^{[3
]}

Harnefors, Lennart ^{[2
,4
]}

Gong, Hong ^{[3
]}

Hasler, Jean-Philippe ^{[1
]}

Nee, Hans-Peter ^{[2
]}

机构：

[1] ABB, S-72164 Vasteras, Sweden

[2] KTH Royal Inst Technol, S-10044 Stockholm, Sweden

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

[4] ABB, S-72178 Vasteras, Sweden

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2019年 / 55卷 / 03期

关键词：

Multi-input-multi-output (MIMO); Nyquist stability criterion; single-input-single-output (SISO); voltage-source converter (VSC); weak grid; INPUT-ADMITTANCE; SYSTEM; OPERATION;

D O I：

10.1109/TIA.2019.2898978

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Converter-grid interaction is of great interest in a weak-grid condition. This paper presents a single-input-single-output (SISO) open-loop transfer function for the stability analysis of grid-connected voltage-source converters. Differing from the conventional input impedance method and the eigenvalue analysis, an alternative multi-input-multi-output closed-loop system is developed in the paper and it eventually yields an SISO open-loop transfer function. This enables the application of a single Nyquist curve for analyzing the overall system stability. The model is validated against time-domain simulations as well as experimental results showing excellent accuracy for predicting the system stability.

引用

页码：2931 / 2941

页数：11

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