Samanes Pascual, Javier

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https://academica-e.unavarra.es/handle/2454/49952

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Samanes Pascual

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Javier

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Ingeniería Eléctrica, Electrónica y de Comunicación

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ISC. Institute of Smart Cities

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0000-0002-0192-3814

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88821

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811008

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Author: Samanes Pascual, Javier × Subject: Phase-locked loop ×

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    PublicationOpen Access
    Influence of the grid-side converter synchronization loop on the small-signal stability of a grid-forming DFIG wind turbine
    (IEEE, 2024-08-30) Samanes Pascual, Javier; Oraa Iribarren, Iker; Gubía Villabona, Eugenio; López Taberna, Jesús; Ingeniería Eléctrica, Electrónica y de Comunicación; Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza; Institute of Smart Cities - ISC
    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.