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SISO Transfer Functions for Stability Analysis of Grid-Connected Voltage-Source Converters
ABB, Västerås, Sweden.ORCID iD: 0000-0002-3107-7073
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2019 (English)In: IEEE transactions on industry applications, ISSN 0093-9994, E-ISSN 1939-9367, Vol. 55, no 3, p. 2931-2941, article id 8640057Article in journal (Refereed) Published
Abstract [en]

Converter-grid interaction is of great interest in a weak-grid condition. This paper presents a single-input-single-output (SISO) open-loop transfer function for the stability analysis of grid-connected voltage-source converters. Differing from the conventional input impedance method and the eigenvalue analysis, an alternative multi-input-multi-output closed-loop system is developed in the paper and it eventually yields an SISO open-loop transfer function. This enables the application of a single Nyquist curve for analyzing the overall system stability. The model is validated against time-domain simulations as well as experimental results showing excellent accuracy for predicting the system stability.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2019. Vol. 55, no 3, p. 2931-2941, article id 8640057
Keywords [en]
Multi-input-multi-output (MIMO), Nyquist stability criterion, single-input-single-output (SISO), voltage-source converter (VSC), weak grid, Closed loop systems, Eigenvalues and eigenfunctions, MIMO systems, Stability criteria, System stability, Telecommunication repeaters, Time domain analysis, Multi input multi output, Single input single output, Voltage source converters, Transfer functions
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-252523DOI: 10.1109/TIA.2019.2898978ISI: 000466033700073Scopus ID: 2-s2.0-85064988163OAI: oai:DiVA.org:kth-252523DiVA, id: diva2:1324293
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QC 20190613

Available from: 2019-06-13 Created: 2019-06-13 Last updated: 2019-06-13Bibliographically approved

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Harnefors, LennartNee, Hans-Peter

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  • apa
  • harvard1
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More styles
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  • de-DE
  • en-GB
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Output format
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