Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Stability Analysis of Current Control based on Virtual Resistor for Single-Phase Grid Converters with LLCL Input Filters
Authors Cheol-Ju Bae ; Dong-Choon Lee
DOI 10.6113/TKPE/2016.21.5.404
Page pp.404-410
ISSN 1229-2214
Keywords Active damping; Grid converter; LLCL filters; Stability; Virtual resister.
Abstract To avoid the stability issues of LLCL filters, passive or active damping methods to eliminate the resonance phenomena are required. In this paper, system stability of a current control is analyzed when the active damping scheme based on the virtual resister is utilized in single-phase grid converter systems with LLCL input filters. The control performance according to the parameters of the virtual resistance is investigated. The validity of stability analysis was verified by simulation and experimental results.