NDLI: High-performance feedback-type active damping of LCL-filtered voltage source converters

Content Provider	IEEE Xplore Digital Library
Author	Xiongfei Wang Blaabjerg, F. Poh Chiang Loh
Copyright Year	2015
Description	Author affiliation: Dept. of Energy Technol., Aalborg Univ., Aalborg, Denmark (Xiongfei Wang; Blaabjerg, F.; Poh Chiang Loh)
Abstract	Active damping of LCL-filter resonance based on single-state feedback control is widely used with voltage source converters. Its robustness against grid impedance variation has always been a major concern with its controller design. To deal with this issue, this paper begins by developing a generalized impedance-based model of grid current control with feedback-type active damping. Then, a controller design method based on the z-domain root contours and frequency-domain passivity theorem is proposed. It not only allows a co-design of the grid current controller and damping controller, but ensures also a robust stabilization against the grid parameters variations. For illustration, the approach is applied to design three single-state feedback-damping schemes, and their damping robustness are compared under both inductive and resonant grid impedances. Experimental results validate the effectiveness of the method.
Starting Page	2629
Ending Page	2636
File Size	2080954
Page Count	8
File Format	PDF
e-ISBN	9781467371513
DOI	10.1109/ECCE.2015.7310029
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-20
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Damping Current control Voltage source converter Stability Capacitors Resonant frequency LCL-filters Active damping Robustness Admittance Impedance Passivity
Content Type	Text
Resource Type	Article

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