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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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811008

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2020 - 20244
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Author: Samanes Pascual, Javier × Subject: Doubly-fed induction generator (DFIG) ×

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Now showing 1 - 4 of 4
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    PublicationOpen Access
    Control strategy for a droop-controlled grid-connected DFIG wind turbine
    (IEEE, 2022) Oraá Iribarren, Iker; Samanes Pascual, Javier; López Taberna, Jesús; Gubía Villabona, Eugenio; Ingeniería Eléctrica, Electrónica y de Comunicación; Institute of Smart Cities - ISC; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren
    The application of droop control techniques without inner current control loops to doubly-fed induction generator (DFIG) based wind turbines does not allow to provide a stable response at all operating points in terms of rotational speed and active and reactive power. After modeling the system dynamics and analyzing the causes of instability, this paper proposes a control strategy that allows to stabilize the system response at all possible operating points. Simulation results performed in MATLAB/Simulink validate the proposed control strategy proving its effectiveness.
  • Thumbnail Image
    PublicationOpen Access
    Modeling of a droop-controlled grid-connected DFIG wind turbine
    (IEEE, 2022) Oraá Iribarren, Iker; Samanes Pascual, Javier; López Taberna, Jesús; Gubía Villabona, Eugenio; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Institute of Smart Cities - ISC; Ingeniería Eléctrica, Electrónica y de Comunicación
    Traditionally, to characterize the response of droop-controlled systems RMS models have been used. However, as it is demonstrated in this work, when droop control is applied to doubly-fed induction generators, RMS models do not allow to predict the system stability and dynamic response. Thus, in this article, a linearized small-signal model that overcomes the limitations of RMS models is presented. The proposed model is validated by simulation in MATLAB/Simulink demonstrating that it allows to accurately analyze the stability and dynamic response of the system under study. This model is an interesting tool that can be used in future works to design and adjust grid-forming controllers for doubly-fed induction generators.
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    PublicationOpen Access
    Sub-synchronous resonance damping control strategy for DFIG wind turbines
    (IEEE, 2020) Samanes Pascual, Javier; Gubía Villabona, Eugenio; López Taberna, Jesús; Burgos, Rolando; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Institute of Smart Cities - ISC; Ingeniería Eléctrica, Electrónica y de Comunicación
    Doubly-fed induction generator (DFIG) wind turbines connected to capacitive series-compensated transmission lines are prone to exhibit oscillatory behavior. The phenomena is called sub-synchronous resonances (SSRs), as these oscillations occur at frequencies below the fundamental component. This paper first develops a modeling methodology for DFIG wind turbines, based on impedance matrices, that is applied to model a real wind farm where SSRs were reported. The stability analysis performed shows how the interaction between the grid-side converter and the rotor-side converter contribute to the instability of DFIG wind energy conversion systems connected to series compensated grids. With this model, we propose a simple sub-synchronous resonance control strategy based on an orthogonal proportional action applied to the rotor currents, and a variable gain in the PI controller adjusted as a function of the DFIG rotational speed. This control strategy depends only on the rotor currents, which are local and already measured variables in any DFIG wind turbine, and is implemented in the rotor side converter, so it does not imply an additional cost at wind farm or wind turbine level and can be applied to any DFIG wind energy conversion system (WECS). Additionally, it proves to be robust for any line impedance series compensation level, and it does not need real-time information concerning the grid at which the wind turbine is connected, or its parameters. A real case study is considered, where the sub-synchronous resonance damping strategy presented in this work is able to stabilize the system for every possible line impedance compensation level.
  • Thumbnail Image
    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.