Passivity-based design of robust passive damping for LCL-filtered voltage source converters

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14 Citationer (Scopus)

Abstract

Passive damping is proven as a robust stabilizing technique for LCL-filtered voltage source converters. However, conventional design methods of passive dampers are based on the passive components only, while the inherent damping effect of time delay in the digital control system is overlooked. In this paper, a frequency-domain passivity-based design approach is proposed, where the passive dampers are designed to eliminate the negative real part of the converter output admittance with closed-loop current control, rather than shaping the LCL-filter itself. Thus, the influence of time delay in the current control is included, which allows a relaxed design of the passive damper with the reduced power loss and improved stability robustness against grid parameters variations. Design procedures of two commonly used passive dampers with LCL-filtered VSCs are illustrated. Experimental results validate the effectiveness of the approach.
OriginalsprogEngelsk
TitelProceedings of the 2015 IEEE Energy Conversion Congress and Exposition (ECCE)
Antal sider8
ForlagIEEE Press
Publikationsdatosep. 2015
Sider3718-3725
DOI
StatusUdgivet - sep. 2015
Begivenhed2015 IEEE Energy Conversion Congress and Exposition (ECCE) - Montreal, Canada
Varighed: 20 sep. 201524 sep. 2015

Konference

Konference2015 IEEE Energy Conversion Congress and Exposition (ECCE)
Land/OmrådeCanada
ByMontreal
Periode20/09/201524/09/2015

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