Now showing items 21-40 of 170

  • Computational analysis of fire dynamics inside a wind turbine 

    Rengel Darnaculleta, Francisco de Borja; Pastor Ferrer, Elsa; Gómez, E.; Hermida, Debora; Molinelli, L.; Planas Cuchi, Eulàlia (2017-06-15)
    Article
    Open Access
    Wind turbines are generally considered cost-effective, reliable and sustainable energy sources. Fires are not common in wind turbines, but a significant number of fires occur every year due to the large number of turbines ...
  • Computational Fluid Dynamics study of 2D vertical axis turbines for application to wind and tidal energy production 

    Hernández Gómez, Antonio (Universitat Politècnica de Catalunya, 2014-03-13)
    Bachelor thesis
    Open Access
    This project consists in the study of vertical axis turbines, which in opposition to classical horizontal axis turbines have their axis of rotation perpendicular to the fluid (air/water) direction. These kinds of turbines ...
  • Conception d’une éolienne à axe verticale avec la société ADVTECH 

    Gratacós Grau, Jaume; Prior, Virginia; Giralt, Eduard (Universitat Politècnica de Catalunya / École Nationale Supérieure d’Arts et Métiers, 2014)
    Bachelor thesis
    Restricted access - confidentiality agreement
  • Condition monitoring of wind turbine structures through univariate and multivariate hypothesis testing 

    Pozo Montero, Francesc; Vidal Seguí, Yolanda (IntechOpen, 2018)
    Part of book or chapter of book
    Restricted access - publisher's policy
    This chapter presents a fault detection method through uni- and multivariate hypothesis testing for wind turbine (WT) faults. A data-driven approach is used based on supervisory control and data acquisition (SCADA) data. ...
  • Control de un generador doblemente alimentado para turbinas eólicas 

    Gamarra Rodríguez, Isabel (Universitat Politècnica de Catalunya, 2009-06-26)
    Master thesis (pre-Bologna period)
    Open Access
    En los últimos años se está produciendo un crecimiento de demanda energética y un aumento de los niveles de contaminación, debido en parte a la industrialización de países en vías de desarrollo. Para controlar la ...
  • Control de un inversor trifásico conectado a la red bajo huecos de tensión desequilibrados 

    Zha, Yong (Universitat Politècnica de Catalunya, 2011-11)
    Master thesis (pre-Bologna period)
    Open Access
    Este proyecto consiste en estudiar, simular y comprobar experimentalmente tres m etodos usuales de control de corriente para los inversores trif asicos de aerogenerador, adem as tienen que funcionar cuando aparecen huecos ...
  • 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 Full-Scale Converter based Wind Power Plants for damping of low frequency system oscillations 

    Rodríguez Cortés, Pedro; Teodorescu, Remus; Adamczyk, Andrzej Grzegorz (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
    Conference report
    Restricted access - publisher's policy
    Damping of low frequency power oscillations is one of essential aspects of maintaining power system stability. In literature can be found publications on damping capability of Doubly Fed Induction Generator based wind ...
  • Control of STATCOM in wind power plants based on induction generators during asymmetrical grid faults 

    Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Medeiros, G.; Teodorescu, Remus; Blaabjerg, F. (2010)
    Conference report
    Open Access
    This paper explores different strategies to set the reference current of a STATCOM under unbalanced grid voltage conditions. The aim of the proposed control strategies is to provide a set of reactive current references ...
  • 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. ...
  • Converter structure-based power loss and static thermal modeling of the press-pack IGBT three-level ANPC VSC applied to multi-MW wind turbines 

    Senturk, Osman S.; Helle, Lars; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2011-09-19)
    Article
    Restricted access - publisher's policy
    Wind turbine converters demand high power density due to nacelle space limitation and high reliability due to high maintenance cost. Depending on the converter structure, the converter thermal performance determines the ...
  • Damage diagnosis for offshore fixed wind turbines 

    Agis Cherta, David; Vidal Seguí, Yolanda; Pozo Montero, Francesc
    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 ...
  • Data-driven identification of local structural dynamics in wind turbines under various aerodynamic & marine loads 

    Anayurt, Basak (Universitat Politècnica de Catalunya, 2015-09-14)
    Master thesis
    Restricted access - author's decision
    The power generation from wind turbines constitutes an example of highly complex engineering system especially in offshore applications where flow around the tower and nacelle coupled with inflow turbu- lence and rotation ...
  • DC-link voltage oscilations reduction during unbalanced grid faults for high power wind turbines 

    Miranda, Hernan; Teodorescu, Remus; Rodríguez Cortés, Pedro; Helle, L. (2011)
    Conference report
    Restricted access - publisher's policy
    During unbalanced grid voltage faults the Power injected to the grid experiences 100Hz oscillations as a result of interactions between positive and negative sequence components of three-phase voltages and currents. These ...
  • Definició i implementació d'un procés de correlació per a una primera unitat d'Aerogenerador 

    Safont Aparicio, Ferran (Universitat Politècnica de Catalunya, 2010-04)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Aquest projecte pretén definir un procés de correlació estructural entre un model de simulació i un model experimental d’aerogenerador, per a analitzar el comportament estructural de l’aerogenerador enfront diferents ...
  • Design and analysis of a slope voltage control for a DFIG wind power plant 

    Martinez, J.; Kjaer, P. C.; Rodríguez Cortés, Pedro; Teodorescu, Remus (2012-03)
    Article
    Restricted access - publisher's policy
    This paper addresses a detailed design of a wind power plant and turbine slope voltage control in the presence of communication delays for a wide short-circuit ratio range operation. The implemented voltage control ...
  • 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 ...
  • Design of global chain for wind turbines production 

    Guarch Fontanals, Oriol; Garcia, Patricia; Gelgel, Mehmet; Le Goff, Pierre (Universitat Politècnica de Catalunya, 2009-11-30)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Danmarks tekniske universitet
    This project discusses perspectives for design global supply chain for wind turbine production aiming to a future political system supporting this development. We have to install wind farms in 6 countries (Denmark, Sweden, ...
  • Design of wind turbine rotors 

    Cañeque Fernández, Daniela (Universitat Politècnica de Catalunya / Tecnhische Universität München, 2014)
    Bachelor thesis
    Restricted access - author's decision
    The objective of the following assignment is to analyze a wind turbine of 10MW. The initial configuration, given in class, had a hub height of 119m. In our case, we have perturbed this height by increasing it 10%.