Exploració per autor "Pedra Durán, Joaquim"
Ara es mostren els items 3-22 de 38
-
Behaviour of the doubly fed induction generator exposed to unsymmetrical voltage sags
(2012-09)
Article
Accés restringit per política de l'editorialThis 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
(2016)
Comunicació de congrés
Accés restringit per política de l'editorial -
Circuitos monofásicos y trifásicos
(Edicions UPC, 1999)
Llibre
Accés restringit a la comunitat UPCEste 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
(2014-11-13)
Article
Accés restringit per política de l'editorialThree 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 ... -
Comparison of small-signal admittance-based models of doubly-fed induction generators
(2023-02)
Article
Accés restringit per política de l'editorialThis paper reviews and compares the main doubly-fed induction generator (DFIG) models for stability assessment in the literature by PSCAD/EMTDC simulation. The main contribution of the paper is a detailed study on small- ... -
DC Admittance Model of VSCs for Stability Studies in VSC-HVDC Systems
(2023-07-01)
Article
Accés obertHigh-voltage direct current (HVDC) systems linked to AC grids with converters are promising energy transmission systems. These systems present complex AC- and DC-side dynamic interactions. Impedance-based stability studies ... -
Detailed study of DFIG-based wind turbines to overcome the most severe grid faults
(2014-11-01)
Article
Accés restringit per política de l'editorialThis 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
(2011-05)
Article
Accés restringit per política de l'editorialThis 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
(2011-12)
Article
Accés restringit per política de l'editorialThe 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 ... -
Doubly fed induction generator-based variable-speed wind turbine: proposal of a simplified model under a faulty grid with short-duration faults
(2019-08)
Article
Accés obertThe aim of this study is to provide a simplified model of a variable-speed wind turbine (VSWT) with the technology of a doubly-fed induction generator (DFIG) which operates under faulty grid conditions. A simplified model ... -
Effect of wind turbine converter control on wind power plant harmonic response and resonances
(2017-02-01)
Article
Accés restringit per política de l'editorialWind 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
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialTraction 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
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialWind 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 short-circuit ratio on control parameter settings of DFIG wind turbines
(2024-04-11)
Article
Accés obertThis work deals with doubly fed induction generator (DFIG) modeling and stability when connected to weak AC grids. A detailed state-space model that includes the phase-locked loop (PLL) is developed. This work aims to ... -
Impact of voltage sags on DC bus voltage in unipolar LVDC systems
(2015)
Text en actes de congrés
Accés obert -
Initialization of DFIG wind turbines with a phasor-based approach
(2019-03)
Article
Accés obertThe objective of this paper is to propose a simple approach to solve the steady state of a wind turbine (WT) equipped with a doubly-fed induction generator (DFIG) which can be used to initialize dynamic studies of the ... -
Model of aeronautical ground lighting system transformers
(2015-03-02)
Article
Accés obertAirport 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 ... -
Model of quasi-Z-source inverter-based PV power systems for stability studies of multi-terminal AC grid-connected PV power systems
(Elsevier, 2024-01)
Article
Accés obertPhotovoltaic (PV) power systems are becoming one of the most popular green power systems. Power converters are used in these systems. Among them, quasi-Z-source inverters (qZSIs) are currently on the rise. However, ... -
On fixed-speed WT generator modeling for rotor speed stability studies
(2012-02)
Article
Accés restringit per política de l'editorialThis 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
(2015-04-16)
Article
Accés obertThis 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 ...
