Damping Methods for Resonances Caused by LCL-Filter-Based Current-Controlled Grid-Tied Power Inverters: An Overview

被引：299
作者：
Wu, Weimin [1 ]
Liu, Yuan [1 ]
He, Yuanbin [2 ]
Chung, Henry Shu-Hung [2 ]
Liserre, Marco [3 ]
Blaabjerg, Frede [4 ]
机构：
[1] Shanghai Maritime Univ, Dept Elect Engn, Shanghai 201306, Peoples R China
[2] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
[3] Christian Albrechts Univ Kiel, Chair Power Elect, D-24118 Kiel, Germany
[4] Aalborg Univ, Dept Energy Engn, DK-9100 Aalborg, Denmark
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2017年 / 64卷 / 09期
关键词：
Current-controlled; damping; distributed power generation system (DPGS); generalized Nyquist stability criterion; grid-tied inverter; impedance-based stability analysis; LCL filter; stability; SHUNT ACTIVE-FILTER; IMPEDANCE ESTIMATION; LLCL-FILTER; CONNECTED INVERTER; CONTROL STRATEGY; DESIGN METHOD; SYSTEM; STABILITY; VOLTAGE; COMPENSATION;
D O I：
10.1109/TIE.2017.2714143
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Grid-tied voltage source inverters using LCL filter have been widely adopted in distributed power generation systems (DPGSs). As high-order LCL filters contain multiple resonant frequencies, switching harmonics generated by the inverter and current harmonics generated by the active/passive loads would cause the system resonance, and thus the output current distortion and oscillation. Such phenomenon is particularly critical when the power grid is weak with the unknown grid impedance. In order to stabilize the operation of the DPGS and improve the waveform of the injected currents, many innovative damping methods have been proposed. A comprehensive overview on those contributions and their classification on the inverter-and grid-side damping measures are presented. Based on the concept of the impedance-based stability analysis, all damping methods can ensure the system stability by modifying the effective output impedance of the inverter or the effective grid impedance. Classical dampingmethods for industrial applications will be analyzed and compared. Finally, the future trends of the impedance-based stability analysis, as well as some promising damping methods, will be discussed.
引用
收藏
页码：7402 / 7413
页数：12
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