Now showing items 1-20 of 37

    • A single leg switched PWM method for three-phase H-bridge voltage source converters 

      Senturk, Osman S.; Munk-Nielsen, Stig; Teodorescu, Remus; Helle, Lars; Rodríguez Cortés, Pedro (2009)
      Conference lecture
      Open Access
      This paper proposes a single leg switched or a hybrid PWM (HPWM) method for three-phase three-level HBridge Voltage Source Converters (3L-HB-VSCs). By means of the proposed modulation, a 3L-HB-VSC can generate the ...
    • An active power self-synchronizing controller for grid-connected converters emulating inertia 

      Remón, D.; Mir Cantarellas, Antonio; Rakhshani, Elyas; Candela García, José Ignacio; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      Renewable energy sources are increasing their penetration in power systems, making necessary new control systems that offer services usually provided only by conventional generators. In this paper, an active power controller ...
    • An active power synchronization control loop for grid-connected converters 

      Remón, D.; Mir Cantarellas, Antonio; Rakhshani, Elyas; Candela García, José Ignacio; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      The increasing penetration of renewable energy sources in power systems requires new control systems that provide services similar to those of conventional generators. This paper proposes an active power controller that ...
    • An approach to the performance-oriented model of variable-speed wind turbines 

      Rolán Blanco, Alejandro; Luna Alloza, Álvaro; Rocabert Delgado, Joan; Aguilar Galván, Daniel; Vázquez Guzmán, Gerardo (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Conference lecture
      Open Access
      The aim of this work is to give an approach to the Performance-Oriented Model of Variable-Speed Wind turbines (VSWTs) equipped with permanent magnet synchronous generator (PMSG), and compare it to the component-oriented model. ...
    • Analysis of the eolic harnessing of mountain and valley winds in several places of Pyrenees. 

      Viñallonga Pijoan, Jordi (Universitat Politècnica de Catalunya, 2011-07-25)
      Bachelor thesis
      Open Access
      Sota el context actual de canvi climàtic que està patint el nostre país, en aquest escrit es proposa una possible nova font d‟energia alternativa a les muntanyes: l‟aprofitament dels corrents tèrmics. Els cims de les ...
    • Aplicació de dispositius de transmissió AC flexibles per al suport a la xarxa elèctrica 

      Mora Cantallops, Marçal (Universitat Politècnica de Catalunya, 2009-05)
      Master thesis (pre-Bologna period)
      Open Access
      El present projecte s'emmarca dins el camp de les energies renovables (particularment l’eòlica), la tecnologia elèctrica i l’electrònica de potencia. L'elevada penetració de l'energia eòlica i la proliferació de nous ...
    • 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 power converters in distributed generation applications under grid fault conditions 

      Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Muñoz Aguilar, Raúl Santiago; Córcoles López, Felipe; Teodorescu, Remus; Blaabjerg, Frede (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy
      The operation of distributed power generation systems under grid fault conditions is a key issue for the massive integration of renewable energy systems. Several studies have been conducted to improve the response of ...
    • Control proposals for the operation of power converters in wind power systems 

      Luna Alloza, Álvaro; Aguilar, Daniel; Muñoz Aguilar, Raúl Santiago; Córcoles López, Felipe; Rodríguez Cortés, Pedro (IEEE, 2011)
      Conference report
      Open Access
      The wind turbines based on Doubly Fed Induction Generators (DFIG) represent almost the 60% of the installed windpower worldwide. Nowadays most of the existing algorithms, used for regulating the production of active and ...
    • Converter structure-based power loss and static thermal modeling of the press-pack IGBT-based three-level ANPC and HB VSCs applied to Multi-MW wind turbines 

      Senturk, Osman S.; Helle, L; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2010)
      Conference report
      Open Access
      In this study, the converter-structure based power loss and thermal models are developed for the medium voltage full-scale 3LANPC- VSC and 3L-HB-VSC utilizing press-pack IGBT-diode pairs and interfacing a 6MW wind ...
    • Deterministic and stochastic study of wind farm harmonic currents 

      Sainz Sapera, Luis; Mesas García, Juan José; Teodorescu, Remus; Rodríguez Cortés, Pedro (2010-06-03)
      Article
      Open Access
      Wind farm harmonic emissions are a well-known power quality problem, but little data based on actual wind farm measurements are available in literature. In this paper, harmonic emissions of an 18MWwind farm are investigated ...
    • Disseny i modelització d'un convertidor de potència per al control d'un generador d'inducció 

      Yeh Chen, David; Obiols Pascual-Trenor, Santiago (Universitat Politècnica de Catalunya, 2016-06-23)
      Bachelor thesis
      Open Access
      Disseny, modelització i simulació d'una màquina d'inducció, dels seus convertidors i del seu sistema de control mitjançant un software específic de simulacions
    • Dynamic load mitigation for floating offshore wind turbines supported by structures with mooring lines 

      Luo, Ningsu; Pacheco Garcés, José Luis; Vidal Seguí, Yolanda; Zapateiro, Mauricio (2012)
      Conference lecture
      Open Access
      In recent years, the offshore wind industry has experienced significant growth with the installation of offshore wind farms in shallow water (such as in Denmark). However, almost all of offshore wind turbines to date are ...
    • Emulador d’un sistema eòlic connectat a la xarxa elèctrica amb tecnologia back-to-back de tres nivells 

      Calle Prado, Alejandro (Universitat Politècnica de Catalunya, 2008-09)
      Master thesis (pre-Bologna period)
      Open Access
      El present projecte final de carrera es situa dins de l’àmbit dels convertidors multinivell aplicats a la generació d’energia elèctrica a partir d’energia eòlica, particularment es centra en els convertidors de tres ...
    • Enhanced power device configuration and operation of a grid-connected active-neutralpoint- clamped inverter for wind energy conversion systems 

      Caballero Diaz, Luis; Busquets Monge, Sergio; Ratés Palau, Sergi (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference lecture
      Restricted access - publisher's policy
      The power ratings of wind energy conversion systems (WECS) are increasing considerably due to high demand on wind power. Thus, multilevel power converters are becoming an interesting solution in the largest WECS, especially ...
    • 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 ...
    • Impedance analysis of harmonic resonance in HVDC connected Wind Power Plants 

      Sowa, Igor (Universitat Politècnica de Catalunya, 2016-07)
      Master thesis
      Open Access
      During the last years the development of HVDC connected offshore wind power plants increased. As the first wind farms of this type were commissioned, an unexpected phenomenon occurred. Electrical harmonic resonance in ...
    • Medium voltage three-level converters for the grid connection of a multi-MW wind turbine 

      Senturk, Osman S.; Helle, Lars; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2009)
      Conference lecture
      Open Access
      Three-level (3L) neutral point clamped (NPC), flying capacitor (FC), and H-bridge (HB) voltage source converters (VSCs) as a grid-side full-scale medium voltage (MV) converter are modeled, controlled, and simulated for ...
    • Model predictive current control for high-power grid-connected converters with output LCL filter 

      Miranda, Hernan; Teodorescu, Remus; Rodríguez Cortés, Pedro; Helle, Lars (2009)
      Conference report
      Open Access
      A model predictive control strategy for a highpower, grid connected 3-level neutral clamped point converter is presented. Power losses constraints set a limit on commutation losses so reduced switching frequency is ...
    • Modelització, disseny i control d'un generador eòlic utilitzant diferents metodologies de control 

      Renom Estragués, Ona (Universitat Politècnica de Catalunya, 2017-01-12)
      Bachelor thesis
      Open Access
      En aquest treball es presenta la modelització, disseny i control d’un generador eòlic d’inducció de tipus gàbia d’esquirol (SCIG) considerant diferents metodologies de control sobre aquest. Primerament, es realitza la ...