Adaptive notch filter based active damping for power converters using LCL filters

Mihai Ciobotaru, Antoine Rossé, Lóránd Bede, Baburaj Karanayil, Vassilios G. Agelidis

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

7 Citations (Scopus)

Abstract

This paper proposes an active damping technique for grid-connected converters using inductor-capacitor-inductor (LCL) filters. The technique relies on a discrete-time adaptive notch filter (NF) which is able to adapt its resonance frequency and bandwidth in real-time. The tuning function of this filter can be used in the case when the resonance frequency of the LCL filter varies due to a change in the line inductance or the use of non-linear inductors employing magnetic materials, where the inductance is a function of the applied current. In particular, this paper addresses the difficulties of the discrete-time implementation of such filter due to the proximity to Nyquist-Shannon limit. A detailed analysis of the filter and the control system is also included. The experimental results validate the effectiveness of the proposed technique.
Original languageEnglish
Title of host publication2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
Subtitle of host publicationproceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages7
ISBN (Electronic)9781467386173
ISBN (Print)9781467386180
DOIs
Publication statusPublished - 2016
Externally publishedYes
Event7th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2016 - Vancouver, Canada
Duration: 27 Jun 201630 Jun 2016

Other

Other7th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2016
CountryCanada
CityVancouver
Period27/06/1630/06/16

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