Observer-based active damping for grid-connected converters with LCL filter

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Abstract

In this paper an add-on control method is proposed to damp oscillations in the LCL filter of a grid-connected converter. An observer is used to estimate the capacitor current, and successively, a conventional active damping technique is applied. Since the capacitor current is estimated from already available measurements, the proposed active damping method does not need an extra current sensor for the capacitor current. Model analysis and simulation validate the effectiveness of the proposed control method.

Original languageEnglish
Title of host publication2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages2697-2702
Number of pages6
ISBN (Electronic)9784886864055
DOIs
Publication statusPublished - 22 Oct 2018
Event8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 - Niigata, Japan
Duration: 20 May 201824 May 2018

Conference

Conference8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
CountryJapan
CityNiigata
Period20/05/1824/05/18

Keywords

  • control
  • converter
  • damping
  • LCL filter
  • observer

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