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
收藏
页码：2931 / 2941
页数：11
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