Observer-based power-synchronization control for grid-forming converters
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Journal Title
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Volume Title
A4 Artikkeli konferenssijulkaisussa
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Date
2023-06-29
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
1-6
1-6
Series
2023 IEEE Belgrade PowerTech
Abstract
This paper proposes an observer-based power-synchronization control (OPSC) method for grid-forming converters. The method can also be utilized for the starting of synchronous generators. It is analogous to observer-based volts-per-hertz (V/Hz) control of electric machine drives, consisting of state-feedback control and an observer. A linearized model of the closed-loop system is derived, passivity of the mechanical subsystem is studied and tuning recommendations are given. The power tracking performance is assessed and compared to that of reference-feedforward power-synchronization control (RFPSC) with the help of simulations and laboratory experiments using a 12.5-kVA converter. The results show that the proposed control method provides good performance in both weak and strong grids.Description
Keywords
Couplings, Uncertain systems, Analytical models, Electric machines, Observers, Synchronous generators, Closed loop systems
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Citation
Nurminen, T, Mourouvin, R, Hinkkanen, M, Kukkola, J, Routimo, M, Vilhunen, A & Harnefors, L 2023, Observer-based power-synchronization control for grid-forming converters . in 2023 IEEE Belgrade PowerTech ., 10202897, IEEE, pp. 1-6, IEEE PowerTech, Belgrade, Serbia, 25/06/2023 . https://doi.org/10.1109/PowerTech55446.2023.10202897
