Now showing items 41-60 of 290

    • Condition monitoring of pump-turbines. New challenges 

      Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Valentín Ruiz, David; Presas Batlló, Alexandre; Rodriguez Godoy, Cristian (2015-05)
      Article
      Open Access
      At present, pumped storage is the only system to store huge amounts of energy. The surplus of energy in the electrical grid is used for pumping water from a lower to a higher reservoir (pump operation). At peak hours or ...
    • Control design and simulation of an HVDC-connected Offshore Wind Power Plant 

      Heuveneers, Manon (Universitat Politècnica de Catalunya, 2018-06-21)
      Bachelor thesis
      Open Access
      Development of an incremental model on Simulink, using the PLECS tool, of the different elements composing the Offshore Wind Power Plant system, and simulation of various situations of unbalanced faults using positive and ...
    • Control methods for low voltage ride-through compliance in grid-connected NPC converter based wind power systems using predictive control 

      Alepuz Menéndez, Salvador; Busquets Monge, Sergio; Bordonau Farrerons, José; Cortés, Patricio; Kouro, Samir (2009-09)
      Conference lecture
      Open Access
      In presence of grid voltage dips, Low Voltage Ride-Through (LVRT) requirements demand the wind power plant to remain connected to the grid, helping the network to keep voltage and frequency stable. Neutral-Point-Clamped (NPC) ...
    • Control of an offshore wind power plant: emulated inertia 

      Pallas Sanmartín, Alba (Universitat Politècnica de Catalunya, 2016-10)
      Master thesis
      Open Access
      Undoubtedly, the energy sector is moving towards a more renewable and sustainable path. This means renewable energy will increase their penetration into the electric power grid. Wind Energy, in particular Offshore Wind ...
    • Control of DFIG-WT under unbalanced grid voltage conditions 

      Luna Alloza, Álvaro; Rodríguez Cortés, Pedro; Lima, Kleber; Córcoles López, Felipe; Watanabe, Edson H.; Teodorescu, R. (2009)
      Conference lecture
      Open Access
      The voltage oriented control in the synchronous reference frame (VOC-SRF) have been extensively used for controlling wind turbines based on doubly fed induction generators (DFIG-WTs) through the rotor side converter of ...
    • Control of PV generation systems using the synchronous power controller 

      Rodríguez Cortés, Pedro; Candela García, José Ignacio; Luna Alloza, Álvaro (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      The high penetration of distributed generation, as PV or wind power, has forced the Transmission System Operators (TSOs) to set restrictive requirements for the operation of such systems. As it can be extracted from ...
    • Control of the parallel operation of VSC-HVDC links connected to an offshore wind farm 

      Rodríguez Amenedo, José L.; Arnaltes, S.; Aragüés Peñalba, Mònica; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2019-02)
      Article
      Open Access
      This paper introduces the control of the parallel operation of two VSC-HVDC links interconnecting an offshore wind farm. The aim of the study is to propose and validate a control system that allows the parallel operation ...
    • Control scheme for low voltage ride-through compliance in back-to-back NPC converter based wind power systems 

      Alepuz Menéndez, Salvador; Calle Prado, Alejandro; Busquets Monge, Sergio; Bordonau Farrerons, José; Kouro, Samir; Wu, Bin (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Conference report
      Open Access
      The increasing influence of wind power in the power system operation has caused the power system operators to include wind power plants in the control of the overall power system, both in steady-state and transient ...
    • Control signal selection for damping oscillations with wind power plants based on fundamental limitations 

      Domínguez García, José Luis; Bianchi, Fernando Daniel; Gomis Bellmunt, Oriol (2013-11)
      Article
      Restricted access - publisher's policy
      Transmission system operators are increasingly demanding that wind power plants (WPPs) contribute to enhance stability of power systems. When WPPs act as power system stabilizers(PSSs), the control and measured signals ...
    • Control strategies for DFIG wind turbines under grid fault conditions 

      Luna Alloza, Álvaro; Rolán Blanco, Alejandro; Medeiros, G.; Rodríguez Cortés, Pedro; Teodorescu, R. (2009)
      Conference lecture
      Open Access
      The classical control techniques for regulating the active and reactive power delivery in doubly fed induction generators (DFIG), for wind power applications, are normally based on voltage oriented control (VOC) strategies. ...
    • Control strategy for the rotor side converter of a DFIG-WT under balanced voltage sag 

      Lima, Kleber; Luna Alloza, Álvaro; Watanabe, Edson H.; Rodríguez Cortés, Pedro (2009)
      Conference lecture
      Open Access
      This paper proposes a new control technique to improve the fault-ride through capability of doubly fed induction generators (DFIG). In such generators the appearance of severe voltage sags at the coupling point make ...
    • Coordinated operation of wind turbines and flywheel storage for primary frequency control support 

      Díaz González, Francisco; Hau, Melanie; Sumper, Andreas; Gomis Bellmunt, Oriol (2015-06-01)
      Article
      Open Access
      This work assesses the participation of wind power plants in primary frequency control support. To participate in frequency control-related tasks, the wind power plants have to maintain a certain level of power reserves. ...
    • Damage diagnosis for offshore fixed wind turbines 

      Agis Cherta, David; Vidal Seguí, Yolanda; Pozo Montero, Francesc (2019-07-01)
      Article
      Open Access
      This paper proposes a damage diagnosis strategy to detect and classify different type of damages in a laboratory offshore-fixed wind turbine model. The proposed method combines an accelerometer sensor network attached to ...
    • Damage diagnosis for offshore fixed wind turbines 

      Agis Cherta, David; Vidal Seguí, Yolanda; Pozo Montero, Francesc (2019)
      Conference report
      Open Access
      This paper proposes a damage diagnosis strategy to detect and classify different type of damages in a laboratory offshore-fixed wind turbine model. The proposed method combines an accelerometer sensor network attached to ...
    • Deep learning is blowing in the wind. Deep models applied to wind prediction at turbine level 

      Manero Font, Jaume; Béjar Alonso, Javier; Cortés García, Claudio Ulises (Institute of Physics (IOP), 2019)
      Conference report
      Open Access
      Wind Energy generation depends on the existence of wind, a meteorological phenomena intermittent by nature, with the consequence of generating uncertainty on the availability of wind energy in the future. The grid stability ...
    • Deep Learning is blowing in the wind. Deep models applied to wind prediction at turbine level 

      Manero, Jaume; Béjar, Javier; Cortés García, Claudio Ulises (IOP Publishing, 2019-05)
      Article
      Open Access
      Wind Energy generation depends on the existence of wind, a meteorological phenomena intermittent by nature, with the consequence of generating uncertainty on the availability of wind energy in the future. The grid stability ...
    • Deep offshore wind farm planning and cost calculation tools 

      Perez, German; Lopez Mendia, Joseba; Val, Laura; Sumper, Andreas; Schuon, Frieder; Prada, Mikel de; Aragües, Monica; Lopes, Helder; Ergun, Hakan; van Hertem, Dirk (2013)
      Conference lecture
      Open Access
    • Deployment of a stand-alone hybrid renewable energy system in coastal areas as a reliable energy source 

      Kasaeian, Alibakhsh; Razmjoo, Armin; Shirmohammadi, Reza; Pourfayaz, Fathollah; Sumper, Andreas (2020-05)
      Article
      Restricted access - publisher's policy
      Solar and wind can be considered as sustainable environmentally friendly and omnipresent renewable energy sources for generating a part of required electrical energy for inhabitants of the remote areas in different countries. ...
    • Design and calculus of the foundation structure of an offshore monopile wind turbine 

      Garcés García, Carlos (Universitat Politècnica de Catalunya, 2012-09-03)
      Master thesis (pre-Bologna period)
      Open Access
    • Design and coordination of a capacitor and on-load tap changer system for voltage control in a wind power plant of doubly fed induction generator wind turbines 

      Martinez, J.; Rodríguez Cortés, Pedro; Kjaer, P. C.; Teodorescu, Remus (2011-05-26)
      Article
      Restricted access - publisher's policy
      In this paper, a novel coordination and control strategy for capacitor banks and on-load tap changer for a wind power plant is introduced. The capacitor banks are controlled in such way that the steady-state usage of the ...