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

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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.
Original languageEnglish
Title of host publication2023 IEEE Belgrade PowerTech
Number of pages6
ISBN (Print)978-1-6654-8779-5
Publication statusPublished - 29 Jun 2023
MoE publication typeA4 Conference publication
EventIEEE PowerTech - Belgrade , Serbia
Duration: 25 Jun 202329 Jun 2023
Conference number: 15


ConferenceIEEE PowerTech


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


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