Ara es mostren els items 1-20 de 25

  • A unified analytical model for characterization of cable faults in VSC DC systems 

    Mesas García, Juan José; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2015)
    Text en actes de congrés
    Accés obert
  • Behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags 

    Rolán Blanco, Alejandro; Córcoles López, Felipe; Pedra Durán, Joaquim (2012-09)
    Article
    Accés restringit per política de l'editorial
    This study analyses the dynamic behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags, providing insights into wind turbine fault ride-through capability. The sags are assumed to be caused ...
  • Cable fault characterization in VSC DC systems 

    Mesas García, Juan José; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
  • Circuitos monofásicos y trifásicos 

    Pedra Durán, Joaquim (Edicions UPC, 1999)
    Llibre
    Accés restringit a la comunitat UPC
    Este texto está orientado a los estudiantes de las distintas especialidades de la titulación de Ingeniería Industrial. En él se cubre una parte de la teoría de circuitos correspondiente a los circuitos eléctricos que se ...
  • Comparison of simplified models for voltage-source-inverter-fed adjustable-speed drive during voltage sags when the during-event continue mode of operation is active 

    Bogarra Rodríguez, Santiago; Monjo Mur, Lluís; Saura Perisé, Jaime; Córcoles López, Felipe; Pedra Durán, Joaquim (2014-11-13)
    Article
    Accés restringit per política de l'editorial
    Three simplified models for adjustable-speed drives are compared with measurements on an actual drive where the inverter control strategy remains unaltered during the event (also known as continue mode of operation) to ...
  • Detailed study of DFIG-based wind turbines to overcome the most severe grid faults 

    Rolán Blanco, Alejandro; Pedra Durán, Joaquim; Córcoles López, Felipe (2014-11-01)
    Article
    Accés restringit per política de l'editorial
    This paper studies the effects of voltage sags caused by faults on doubly-fed induction generators to overcome grid faults. A wide range of sag duration and depth values is considered. It is observed that sag duration ...
  • Discrete fault-clearing instant influence on the simulation of voltage-source-inverter-fed adjustable-speed drives subjected to voltage sags 

    Córcoles López, Felipe; Bogarra Rodríguez, Santiago; Pedra Durán, Joaquim; Luna Alloza, Álvaro (2011-05)
    Article
    Accés restringit per política de l'editorial
    This study analyses the influence of modelling sags with discrete fault-clearing instants on the behaviour of adjustablespeed drives (ASDs) subjected to sags caused by faults. The effects are compared with those of sags ...
  • Doubly fed induction generator subject to symmetrical voltage sags 

    Rolán Blanco, Alejandro; Córcoles López, Felipe; Pedra Durán, Joaquim (2011-12)
    Article
    Accés restringit per política de l'editorial
    The aim of this paper is to analyze the dynamic behavior of the doubly fed induction generator (DFIG) subject to symmetrical voltage sags caused by three-phase faults. A simple control algorithm is considered and assumed ...
  • Effect of wind turbine converter control on wind power plant harmonic response and resonances 

    Sainz Sapera, Luis; Monjo Mur, Lluís; Pedra Durán, Joaquim; Cheah Mañé, Marc; Liang, Jun; Gomis Bellmunt, Oriol (2017-02-01)
    Article
    Accés restringit per política de l'editorial
    Wind turbine harmonic emissions due to power electronics are a well-known power quality concern in wind power plants (WPPs). This problem may be increased by resonances because they amplify harmonic distortion around ...
  • Electrical resonance instability study in traction systems 

    Sainz Sapera, Luis; Monjo Mur, Lluís; Mesas García, Juan José; Pedra Durán, Joaquim; Cheah Mañé, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Traction system stability can be affected by the interaction between the traction load and resonances in the railway traction grid. This paper presents an electrical resonance instability study applied to traction systems. ...
  • Electrical resonance instability study in wind power plants 

    Sainz Sapera, Luis; Mesas García, Juan José; Monjo Mur, Lluís; Pedra Durán, Joaquim; Cheah Mañé, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Wind power plant stability can be affected by the interaction between the wind turbine and the resonances in the collector grid. This paper presents an electrical resonance instability study applied to wind power plants. The ...
  • Impact of voltage sags on DC bus voltage in unipolar LVDC systems 

    Monjo Mur, Lluís; Mesas García, Juan José; Sainz Sapera, Luis; Saura Perisé, Jaime; Pedra Durán, Joaquim (2015)
    Text en actes de congrés
    Accés obert
  • Model of aeronautical ground lighting system transformers 

    lomvarte, daniel; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2015-03-02)
    Article
    Accés obert
    Airport ground lighting (AGL) systems provide visual reference to aircrafts during airport operations. In AGL systems, constant current regulators feed a beacon circuit supplied through isolation transformers. Component ...
  • On fixed-speed WT generator modeling for rotor speed stability studies 

    Pedra Durán, Joaquim; Córcoles López, Felipe; Monjo Mur, Lluís; Bogarra Rodríguez, Santiago; Rolán Blanco, Alejandro (2012-01-20)
    Article
    Accés restringit per política de l'editorial
    This paper analyzes fixed-speed induction generator modeling oriented to rotor speed stability studies. The single- and double-cage models are compared. The effects of symmetrical voltage sags on generator behavior are ...
  • Parameter estimation of squirrel-cage motors with parasitic torques in the torque–slip curve 

    Monjo Mur, Lluís; Córcoles López, Felipe; Pedra Durán, Joaquim (2015-04-16)
    Article
    Accés obert
    This paper studies parasitic torques in steady-state torque–slip curves of squirrel-cage induction motors. The curves of nine motors (small, medium and large size units), three of which were measured in the range s = 2 ...
  • Parameter estimation of wound-rotor induction motors from transient measurements 

    Kojooyan, Hengameh; Monjo Mur, Lluís; Córcoles López, Felipe; Pedra Durán, Joaquim (2014-06)
    Article
    Accés restringit per política de l'editorial
    A new method for determination of the steady-state equivalent circuit parameters of wound-rotor induction motors using experimental data from starting transient measurements is presented. The algorithm data are the stator ...
  • Saturation effects on torque- and current–slip curves of squirrel-cage induction motors 

    Monjo Mur, Lluís; Córcoles López, Felipe; Pedra Durán, Joaquim (2012-12-24)
    Article
    Accés restringit per política de l'editorial
    This paper measures and analyzes the saturation effects on torque- and current–slip curves of three squirrel-cage induction motors.Motor saturation is illustrated by three sets of measurements: I) torque and current for ...
  • Squirrel-cage induction motor parameter estimation using a variable frequency test 

    Monjo Mur, Lluís; Kojooyan, Hengameh; Córcoles López, Felipe; Pedra Durán, Joaquim (2015-06-01)
    Article
    Accés obert
    This paper presents amethod for squirrel-cage induction motor parameter estimation using a phase-to-phase standstill variable frequency test. The measured resistance and reactance at different frequencies are the data of ...
  • Study of cable short circuit in VSC DC systems 

    Monjo Mur, Lluís; Mesas García, Juan José; Sainz Sapera, Luis; Pedra Durán, Joaquim (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
  • Study of MVDC system benchmark networks 

    Mesas García, Juan José; Monjo Mur, Lluís; Sainz Sapera, Luis; Pedra Durán, Joaquim (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial