Recent Submissions

  • Aportación al análisis de la distribución de corriente del rayo en palas de aerogenerador equipadas con fibra de carbono 

    Rey Fernández, José Antonio (Universitat Politècnica de Catalunya, 2021-08-04)
    Doctoral thesis
    Open Access
    This doctoral thesis investigates the current distribution in a wind turbine blade when it is struck by lightning. The thesis focuses on the problem of current distribution in blades with carbon fiber spar caps. In the ...
  • Photovoltaic power converter for large scale applications 

    Verdugo Retamal, Cristian Andrés (Universitat Politècnica de Catalunya, 2021-07-23)
    Doctoral thesis
    Open Access
    Most of large scale photovoltaic systems are based on centralized configurations with voltage source converters of two or three output voltage levels connected to photovoltaic panels. With the development of multilevel ...
  • Measuring energy sustainability by using energy sustainability indicators 

    Razmjoo, Ali (Armin) (Universitat Politècnica de Catalunya, 2021-02-19)
    Doctoral thesis
    Open Access
    The main aim of this thesis is investigating energy sustainability in developing countries using useful indicators. As it is known, serious issues such as global warming and inefficient consumption of energy will lead to ...
  • Energy sustainability of smart cities 

    Villa-Arrieta, Manuel (Universitat Politècnica de Catalunya, 2019-07-22)
    Doctoral thesis
    Open Access
    The increase in the energy consumption of cities forecasted for the coming years makes these urban areas tend to be representative of the energy sustainability of their countries. In this sense, on the basis of the analysis ...
  • Energy-based control schemes of Modular Multilevel Converters for HVDC applications 

    Sánchez Sánchez, Enric (Universitat Politècnica de Catalunya, 2020-12-21)
    Doctoral thesis
    Open Access
    High Voltage Direct Current (HVDC) is a power electronics -based technology that enables the transmission of large amounts of power over long distances, the integration of remote offshore wind power to the main land, and ...
  • Development of the future generation of smart high voltage connectors and related components for substations, with energy autonomy and wireless data transmission capability 

    Kadechkar, Akash (Universitat Politècnica de Catalunya, 2020-10-07)
    Doctoral thesis
    Open Access
    The increased dependency on electricity of modern society, makes reliability of power transmission systems a key point. This goal can be achieved by continuously monitoring power grid parameters, so possible failure modes ...
  • Local electricity markets design and operation in distribution power systems 

    Olivella Rosell, Pol (Universitat Politècnica de Catalunya, 2020-01-31)
    Doctoral thesis
    Open Access
    In the context of distributed generation growth, local grids could face operational issues. In that sense, smart grid deployment will give information to local grid operators about grid status at medium and low voltage ...
  • A novel assessment of unintentional islanding operations in distribution networks 

    Serrano Fontova, Alexandre (Universitat Politècnica de Catalunya, 2020-06-09)
    Doctoral thesis
    Open Access
    This thesis aims to investigate an unexpected islanding operation (IO) which has been identified in a real distribution network. The process of recording and processing the data obtained from the field measurements in the ...
  • Modelling and control strategies for hybrid AC/DC grids 

    Agbemuko , Adedotun Jeremiah (Universitat Politècnica de Catalunya, 2019-11-08)
    Doctoral thesis
    Open Access
    The proposals for large-scale deployment of renewable energy sources is leading to the need for more cross-border interconnections creating a pan-European power system, at the EU level. Such interconnections may take ...
  • Investigación de las estructuras eléctricas y líderes de rayos en tormentas : aportaciones a las condiciones de inicio de rayos gamma terrestres 

    López Trujillo, Jesús Alberto (Universitat Politècnica de Catalunya, 2019-06-21)
    Doctoral thesis
    Open Access
    This thesis presents a characterization of the charge structures of thunderstorms and lightning leader development, and their relationship with the emissions of terrestrial gamma ray flashes (TGFs). The results include a ...
  • DC current flow controllers for meshed HVDC grids 

    Sau Bassols, Joan (Universitat Politècnica de Catalunya, 2019-06-28)
    Doctoral thesis
    Open Access
    Meshed High Voltage Direct Current (HVDC) grids are seen as solution to transmit and exchange high amounts of power across long distances or using submarine cables with high levels of flexibility and redundancy. Also, they ...
  • Large scale battery systems in distribution grids 

    Resch, Matthias (Universitat Politècnica de Catalunya, 2019-01-31)
    Doctoral thesis
    Open Access
    The increasing integration of renewable energy installations at the distribution grid level has led to a strong increase in grid reinforcement measures in recent years. Since the costs are being passed on to the general ...

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