Influence of PLL on stability of interconnected grid-forming and grid-following converters 2024 (English)In: IEEE transactions on power electronics, ISSN 0885-8993, E-ISSN 1941-0107, Vol. 39, no 10, p. 11980-11985Article in journal (Refereed) Published

Abstract [en]

This letter analyzes the impact of a phase-locked loop (PLL) on small-signal stability in a system of interconnected grid-forming and grid-following (GFL) converters. It identifies an undiscovered instability phenomenon, i.e., the system is prone to unstable when the bandwidth of PLL used with GFL converter is low. Experiments validate the theoretical analysis.

Place, publisher, year, edition, pages

Institute of Electrical and Electronics Engineers (IEEE) , 2024. Vol. 39, no 10, p. 11980-11985

Keywords [en]

Phase locked loops, Bandwidth, Synchronization, Stability criteria, Power system stability, Perturbation methods, Voltage control, Grid-following (GFL) converter, grid-forming (GFM) converter, phase-locked loop (PLL), small-signal stability

National Category

Control Engineering

Identifiers

URN: urn:nbn:se:kth:diva-354532DOI: 10.1109/TPEL.2024.3421960ISI: 001304358100053Scopus ID: 2-s2.0-85197502853OAI: oai:DiVA.org:kth-354532DiVA, id: diva2:1904989

Note

QC 20241011

Available from: 2024-10-11 Created: 2024-10-11 Last updated: 2024-10-11Bibliographically approved

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Wang, Xiongfei

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Wu, YangWu, HengWang, Xiongfei

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Electric Power and Energy Systems

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IEEE transactions on power electronics

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Control Engineering

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