Influence of the grid-side converter synchronization loop on the small-signal stability of a grid-forming DFIG wind turbine

Date

2024-08-30

Director

Publisher

IEEE
Acceso abierto / Sarbide irekia
Contribución a congreso / Biltzarrerako ekarpena
Versión aceptada / Onetsi den bertsioa

Project identifier

  • AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-142791OB-I00/ES/ recolecta
  • AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/TED2021-132604B-I00/
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No disponible en Scopus

Abstract

In grid-forming mode (GFM) doubly-fed induction generator based wind turbines connected to the grid, the converter connected to the rotor side is normally responsible for providing the grid-forming characteristics, while the grid-side converter commonly controls the DC-bus voltage thanks to a current control loop implemented in a rotating reference frame. The angle for the rotating reference frame is obtained by means of a phase-locked loop, which synchronizes the converter with the grid. However, this synchronization loop can introduce stability problems in weak grids. This paper proposes to synchronize the grid-side converter by means of the power synchronization loop of the GFM control of the rotor-side converter. This eliminates the need to use of a specific phase-locked loop, improving small-signal stability as demonstrated in the small-signal stability analysis performed in this paper.

Description

Keywords

Doubly-fed induction generator (DFIG), Droop control, Grid-forming, Phase-locked loop, Power synchronization loop, Small-signal stability

Department

Ingeniería Eléctrica, Electrónica y de Comunicación / Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza / Institute of Smart Cities - ISC

Faculty/School

Degree

Doctorate program

item.page.cita

Samanes, J., Oraa, I., Gubia, E., Lopez, J. (2024) Influence of the grid-side converter synchronization loop on the small-signal stability of a grid-forming DFIG wind turbine. In [IEEE], 2024 International Conference on Renewable Energies and Smart Technologies (REST) (pp. 1-5). IEEE. https://doi.org/10.1109/REST59987.2024.10645470

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