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

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

15 Citations (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.
Original languageEnglish
Title of host publicationProceedings of the 2015 IEEE Energy Conversion Congress and Exposition (ECCE)
Number of pages8
PublisherIEEE Press
Publication dateSept 2015
Pages3718-3725
DOIs
Publication statusPublished - Sept 2015
Event2015 IEEE Energy Conversion Congress and Exposition (ECCE) - Montreal, Canada
Duration: 20 Sept 201524 Sept 2015

Conference

Conference2015 IEEE Energy Conversion Congress and Exposition (ECCE)
Country/TerritoryCanada
CityMontreal
Period20/09/201524/09/2015

Keywords

  • Passive damping
  • Delay
  • Passivity
  • Stability
  • Voltage source converter

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