Now showing items 38308-38327 of 79830

  • Grid connection control of VSC-based high power converters for wave energy applications 

    Mir Cantarellas, Antonio; Rakhshani, Elyas; Remón, D.; Rodríguez Cortés, Pedro (2013)
    Conference report
    Restricted access - publisher's policy
    In the wave energy sector, an increasing concern regarding the grid connection of wave energy converters is recently being experienced, as well as in the main challenges resulting from the grid integration of large scale ...
  • Grid connection design and control of LCL+Trap filter based two-level VSC for wave power plant applications 

    Mir Cantarellas, Antonio; Rakhshani, Elyas; Remón, D.; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2013)
    Conference report
    Restricted access - publisher's policy
    This paper presents a filter design methodology and control design strategy for LCL+Trap filters deployed in large scale wave power plants. This filter topology appears as an alternative for the widely used LCL filters, ...
  • Grid filter design for a multi-megawatt medium-voltage voltage source inverter 

    Rockhill, A.A.; Liserre, M.; Teodorescu, Remus; Rodríguez Cortés, Pedro (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-10-14)
    Article
    Open Access
    This paper describes the design procedure and performance of an LCL grid filter for a medium-voltage neutral point clamped (NPC) converter to be adopted for a multimegawatt wind turbine. The unique filter design challenges ...
  • Grid harmonic detection and system resonances indentification in wave power plant applications 

    Nisak, Khairul; Mir Cantarellas, Antonio; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2013)
    Conference report
    Restricted access - publisher's policy
    There is a growing interest in electrical grid connection of single unit Wave Energy Converters (WECs), as well as the multiple units based Wave Power Plant (WPP) applications. Due to the increasing integration of high ...
  • Grid impact analysis of a HTSC cable by using an enhanced conventional simulator 

    del Rosario Calaf, Gerard; Sumper, Andreas; Granados, Xavier; Sudrià Andreu, Antoni (2010)
    Article
    Restricted access - publisher's policy
    Conventional simulators for power system studies do not include the new superconducting (SC) elements in order to perform analysis of their behaviour on the grid, however these simulators allow users to include external ...
  • Grid impedance estimation in PV grid-connected systems through PQ variation methods. A Simulink-based approach 

    Carotenuto, Pietro Luigi (Universitat Politècnica de Catalunya, 2011-07-14)
    Master thesis (pre-Bologna period)
    Open Access
    Català: Un mètode d'estimació de impedància de xarxa amb la pertorbació de la potència activa i reactiva es presenten i analitzen a fons en aquest treball. El mètode proposat va ser implementat en Matlab / Simulink i dos ...
  • Grid security 

    Cazorla, Sergi (2010-05-20)
    Audiovisual
    Open Access
  • Grid sequence detector based on a stationary reference frame 

    Robles Sestafe, Eider; Pou Félix, Josep; Ceballos Recio, Salvador; Gabiola, Igor; Santos, Maider (2010-06)
    Article
    Open Access
    This paper proposes a new three-phase positive sequence detector. The scheme is based on a stationary reference frame and a Moving Average Filter (MAF) that guarantees the complete cancellation of harmonics and grid ...
  • Grid sequence detector based on a stationary reference frame 

    Robles Sestafe, Eider; Pou Félix, Josep; Salvador, Ceballos; Gabiola, Igor; Maider, Santos (EPE Association, 2009-10-31)
    Conference report
    Open Access
    This paper proposes a new three-phase positive sequence detector. The scheme is based on a stationary reference frame and a Moving Average Filter (MAF) that guarantees the complete cancellation of harmonics and grid ...
  • GRID Superscalar aplicat a la química computacional 

    Díaz Capell, Joan (Universitat Politècnica de Catalunya, 2009)
    Master thesis (pre-Bologna period)
    Open Access
    La química computacional és la branca de la química que se n’encarrega de la utilització d’entorns computacionals per la resolució de problemes químics. Un dels problemes químics típics en la recerca de nous fàrmacs ...
  • GRID superscalar: a programming model for the Grid 

    Sirvent Pardell, Raül (Universitat Politècnica de Catalunya, 2009-02-03)
    Doctoral thesis
    Open Access
  • Grid synchronization for advanced power processing and FACTS in wind power systems 

    Luna Alloza, Álvaro; Rocabert Delgado, Joan; Vázquez Guzmán, Gerardo; Rodríguez Cortés, Pedro; Teodorescu, Remus; Córcoles López, Felipe (2010)
    Conference report
    Open Access
    The high penetration of wind power systems in the electrical network has introduced new issues in the stability and transient operation of the grid. By means of providing advanced functionalities to the existing power ...
  • Grid voltage synchronization for distributed generation systems under grid fault conditions 

    Luna Alloza, Álvaro; Rocabert Delgado, Joan; Candela García, José Ignacio; Hermoso Costa, Juan Ramón; Teodorescu, Remus; Blaabjerg, Frede; Rodríguez Cortés, Pedro (2015-07-01)
    Article
    Open Access
    The actual grid code requirements for the grid connection of distributed generation systems, mainly wind and photovoltaic (PV) systems, are becoming very demanding. The transmission system operators (TSOs) are especially ...
  • Grid-connected to/from off-grid transference for micro-grid inverters 

    Heredero Peris, Daniel; Chillón Antón, Cristian; Pages Gimenez, Marc; Gross, Gabriel Igor; Montesinos Miracle, Daniel (2013)
    Conference lecture
    Restricted access - publisher's policy
    This paper compares two methods for controlling the on-line transference from connected to stand-alone mode and vice versa in converters for micro-grids. The first proposes a method where the converter changes from CSI ...
  • Grid-fault control scheme for three-phase photovoltaic inverters with adjustable power quality characteristics 

    Castilla Fernández, Miguel; Miret Tomàs, Jaume; Sosa Avendaño, Jorge Luis; Matas Alcalá, José; García de Vicuña Muñoz de la Nava, José Luis (2010-12-23)
    Article
    Restricted access - publisher's policy
    The power quality of a three-phase photovoltaic (PV) inverter drastically deteriorates in the presence of grid faults with unbalanced voltages.Aripple in the injected power and an increase in the current harmonic ...
  • Grid-PV-diesel hybrid system management 

    Velasco Quesada, Guillermo; Casellas Beneyto, Francisco; Guinjoan Gispert, Francisco; Martínez García, Herminio; Piqué López, Robert (2015)
    Conference report
    Open Access
    This paper addresses the functional design of an energy management system (EMS) applicable to hybrid energy systems (HES) formed by the power grid, photovoltaic (PV) generators, diesel generators, and energy storage systems ...
  • Grid-PV-Diesel hybrid system management. Application to MED-Solar project scenarios 

    Velasco Quesada, Guillermo; Casellas Beneyto, Francisco; Guinjoan Gispert, Francisco; Martínez García, Herminio; Piqué López, Robert (2015)
    Conference lecture
    Restricted access - publisher's policy
    This paper addresses the functional design of an energy management system (EMS) applicable to hybrid energy systems (HES) formed by the power grid, photovoltaic (PV) generators, diesel generators, and energy storage systems ...
  • Grid.Searching. Hacia una metodología para la recuperación de información digital de forma colaborativa en aulas 2.0 

    Pérez Garzón, Aureliano Santiago (Universitat Politècnica de Catalunya, 2012-06-25)
    Master thesis
    Open Access
    La búsqueda en internet se ha erigido como práctica social en la sociedad de la información y el conocimiento. Su natural adopción en los espacios docentes no la excluye de las complejidades heredadas de la propia naturaleza ...
  • Grid4All: open market places for democratic grids 

    Krishnaswamy, Ruby; Navarro Moldes, Leandro; Brunner, René; León Gutiérrez, Xavier; Vilajosana Guillen, Xavier (Springer Berlin / Heidelberg, 2008-08-21)
    Part of book or chapter of book
    Restricted access - publisher's policy
    The Grid4All project is focused on the provision of the benefits and opportunities of Grids for everyone, including small organizations such as schools, families, non-governmental organizations, or small businesses. This ...
  • Grimsel test site - Long-term cement studies.Reactive transport modeling of experiment 2 at Grimsel 

    Saaltink, Maarten Willem; Soler Matamala, Josep M. (2016-04)
    External research report
    Open Access
    Within the framework of the GTS-LCS project (Grimsel Test Site – Long-Term Cement Studies), an in-situ experiment lasting about 5 years was started in 2009 to study water-cement-rock interactions in fractured granite. A ...