Observer-based power-synchronization control for grid-forming converters

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.

Keywords

Couplings, Uncertain systems, Analytical models, Electric machines, Observers, Synchronous generators, Closed loop systems

DOI

10.1109/PowerTech55446.2023.10202897

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

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202309065698

Collections

[article-cris] Sähkötekniikan korkeakoulu / ELEC

Show all metadata

Observer-based power-synchronization control for grid-forming converters

Access rights

URL

Journal Title

Journal ISSN

Volume Title

Authors

Date

Department

Major/Subject

Mcode

Degree programme

Language

Pages

Series

Abstract

Description

Keywords

Other note

DOI

Citation

Permanent link to this item

Collections