Robust Design of LCL-Filters for Active Damping in Grid Converters

Rafael Pena Alzola, Marco Liserre, Frede Blaabjerg, Yongheng Yang

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

9 Citations (Scopus)
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Abstract

Grid converters require a simple inductor or an LCL-filter to limit the current ripples. The LCL-filter is nowadays the preferred solution as it allows lower inductance values. In order to solve the stability concerns, active damping is preferred to passive damping since it does not use dissipative elements. However, large variations in the grid inductance and resonances arising from parallel converters may still compromise the system stability. This calls for a robust design of LCL-filters with active damping. This paper proposes a design flow with little iteration for two well-known methods, namely lead-lag network and current capacitor feedback. The proposed formulas for the resonance frequency, grid and converter inductance ratio, and capacitance of the LCL-filter allow calculating all the LCL-filter parameters. An estimation for the achieved Total Harmonic Distortion (THD) of the grid current is also provided. Experimental results show very robust designs to the parameter variations.
Original languageEnglish
Title of host publicationProceedings of the 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013
Number of pages6
PublisherIEEE Press
Publication date2013
Pages1248-1253
ISBN (Print)978-1-4799-0223-1
ISBN (Electronic)978-1-4799-0224-8
DOIs
Publication statusPublished - 2013
Event39th Annual Conference of the IEEE Industrial Electronics Society - Wien, Austria
Duration: 10 Nov 201313 Nov 2013

Conference

Conference39th Annual Conference of the IEEE Industrial Electronics Society
CountryAustria
CityWien
Period10/11/201313/11/2013
SeriesProceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN1553-572X

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  • Cite this

    Alzola, R. P., Liserre, M., Blaabjerg, F., & Yang, Y. (2013). Robust Design of LCL-Filters for Active Damping in Grid Converters. In Proceedings of the 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 (pp. 1248-1253). IEEE Press. Proceedings of the Annual Conference of the IEEE Industrial Electronics Society https://doi.org/10.1109/IECON.2013.6699311