Voltage Feedforward Active Damping for LLCL Filter Based Grid Connected Converters

被引：0
作者：
Huang, Min [1 ]
Wu, Wemin [1 ]
Li, Yun [1 ]
机构：
[1] Shanghai Maritime Univ, Elect Engn, Shanghai, Peoples R China
来源：
PROCEEDINGS OF THE 2017 12TH IEEE CONFERENCE ON INDUSTRIAL ELECTRONICS AND APPLICATIONS (ICIEA) | 2017年
关键词：
active damping; grid connected converter; delay; voltage feedworward; LCL FILTER; STABILITY ANALYSIS; SYSTEM STABILITY; CURRENT-FEEDBACK; TIED INVERTER; DESIGN; DELAY;
D O I：
暂无
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：
LLCL-filter is an emerging fourth-order filter proposed after the third-order LC'L-filler which uses smaller passive components than the LCL-filter. For LLCL-filter based three-phase grid-connected converter, many active damping methods have been investigated. Among these methods, this paper researches the LC-trap voltage feedforward and the grid voltage feedforward method for the LLCL-based grid-connected converter considering the computational and sample delays. With these delays, the equivalent circuit is deduced and the trap voltage feedforward control can be regarded as a damping resistor and a reactance paralleled with the filter trap circuit. The controller parameters are designed by Z-domain root-locus. The stability and robustness are analyzed by simulation results using Matlab.
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页码：1431 / 1436
页数：6
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