Stability Analysis and Active Damping for LLCL-filter Based Grid-Connected Inverters

被引：0
|
作者：
Huang, Min [1 ]
Blaabjerg, Frede [1 ]
Loh, Poh Chiang [1 ]
Wu, Weimin
机构：
[1] Aalborg Univ, Dept Energy Technol, Aalborg, Denmark
来源：
2014 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIROSHIMA 2014 - ECCE-ASIA) | 2014年
关键词：
LLCL-filter; grid converter; active damping; current control; resonant frequency; stability; INPUT LC FILTER; DESIGN; ROBUSTNESS;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A higher order passive power filter (LLCL-filter) for the grid-tied inverter is becoming attractive for the industrial applications due to the possibility to reduce the cost of the copper and the magnetic material. To avoid the well-known stability problems of the LLCL-fitter it is requested to use either passive or active damping methods. This paper analyzes the stability when damping is required and when damping is not necessary considering sampling and transport delay. Basic LLCL resonance damping properties of different feedback states are also studied. Then an active damping method which is using the capacitor current feedback for LLCL-filter is introduced. Based on this method, a design procedure for the control method is given. Last, both simulation and experimental results are provided to validate the theoretical analysis of this paper.
引用
收藏
页码：2610 / 2617
页数：8
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