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Power-Synchronization Control of Grid-Connected Voltage-Source Converters
KTH, School of Electrical Engineering (EES), Electrical Machines and Power Electronics.ORCID iD: 0000-0002-1755-1365
2010 (English)In: IEEE Transactions on Power Systems, ISSN 0885-8950, E-ISSN 1558-0679, Vol. 25, no 2, 809-820 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a novel control method of grid-connected voltage-source converters (VSCs) is proposed. The method can be generally applied for all grid-connected VSCs but may be of most importance in high-voltage dc (HVDC) applications. Different from the previous control methods, the proposed method utilizes the internal synchronization mechanism in ac systems, in principle, similar to the operation of a synchronous machine. By using this type of power-synchronization control, the VSC avoids the instability caused by a standard phase-locked loop in a weak ac-system connection. Moreover, a VSC terminal can give the weak ac system strong voltage support, just like a normal synchronous machine does. The control method is verified by both analytical models and time simulations.

Place, publisher, year, edition, pages
2010. Vol. 25, no 2, 809-820 p.
Keyword [en]
Control, converters, HVDC, phase-locked loops, power systems, stability
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-27975DOI: 10.1109/TPWRS.2009.2032231ISI: 000285051800024Scopus ID: 2-s2.0-77951667637OAI: oai:DiVA.org:kth-27975DiVA: diva2:382815
Note
QC 20110103Available from: 2011-01-03 Created: 2011-01-03 Last updated: 2017-12-11Bibliographically approved

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Nee, Hans-Peter

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