Exploració per autor "Rolán Blanco, Alejandro"
Ara es mostren els items 6-25 de 36
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Behavior of the three-phase induction motor with spiral sheet rotor
(2009-03)
Article
Accés obertImprovements in torque at low currents using a rotor with spiral sheets are analyzed. Several rotors and stators have been built combining different constructive and mechanical characteristics of the related elements: ... -
Behavior of three-phase inverters under grid faults explained from a geometric perspective
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertThe aim of this work is to analyze the dynamic behavior of inverters powered by renewable energy sources (RES) operating under grid faults by means of a geometric point of view. To this purpose, a three-phase grid-connected ... -
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 ... -
Control strategies for DFIG wind turbines under grid fault conditions
(2009)
Comunicació de congrés
Accés obertThe classical control techniques for regulating the active and reactive power delivery in doubly fed induction generators (DFIG), for wind power applications, are normally based on voltage oriented control (VOC) strategies. ... -
Desenvolupament de recursos per a la creació i gestio de material docent orientat a l’aprenentatge actiu que faciliti l’adaptació d’assignatures tècniques a l’EEES i la seva aplicació a l’ensenyament de circuits elèctrics
(Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-06-04)
Comunicació de congrés
Accés obertL'autoaprenentatge i l’autoavaluació d’assignatures tècniques requereixen eines de càlcul que no estan disponibles dintre del campus virtual ATENEA, per aquest motiu s’ha incorporat al campus virtual de la UPC el software ... -
Desenvolupament de recursos per a la creació i gestió de material docent orientat a l’aprenentatge actiu que faciliti l’adaptació d’assignatures tècniques a l'EEES i la seva aplicació a l’ensenyament de circuits elèctrics
(Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
Comunicació de congrés / Text en actes de congrés
Accés obertL'autoaprenentatge i l’autoavaluació d’assignatures tècniques requereixen eines de càlcul que no estan disponibles dintre del campus virtual ATENEA, per aquest motiu s’ha incorporat al campus virtual de la UPC el software ... -
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 ... -
Distributed cooperative control for stepper motors synchronization
(2018)
Text en actes de congrés
Accés obertThis paper describes the design and simulation of a distributed cooperative control algorithm based on multi-agents to synchronize a group of stepper motors. Modeling of the two-phase hybrid stepper motor in closed loop ... -
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 ... -
Estudio del efecto de los huecos de tensión en el generador de inducción doblemente alimentado
(Universitat Politècnica de Catalunya, 2012-02-17)
Tesi
Accés obertThe aim of this doctoral thesis is to analyse the dynamic behaviour of the doubly-fed induction generator exposed to voltage sags. This electrical machine is mainly used in variable-speed wind turbines. Due to the noticeable ... -
Fault diagnosis and prognosis of a brushless dc motor using a model-based approach
(2020)
Comunicació de congrés
Accés obertThis paper proposes a model-based fault diagnosis and prognosis approach applied to brushless DC motors (BLDC). The objective is an early detection of mechanical and electrical faults in BLDC motors operating under a variety ... -
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 ... -
Integration of cold ironing and renewable sources in the Barcelona smart port
(2019-11)
Article
Accés obertCold ironing, which is the procedure of supplying shoreside electrical power to a ship at berth when its engines are turned off, arises as the eco-friendly way to deliver power to ships while they are berthed in ports, ... -
Integration of Distributed Energy Resources to Unbalanced Grids under Voltage Sags with Grid Code Compliance
(2022-01-01)
Article
Accés obertThe aim of this paper is to analyze the situations in which distributed power generation systems (DPGSs) based on renewable energy sources (RESs) can be controlled when operating under voltage sags. Analytical models for ... -
Losses and CMV evaluation in transformerless grid-connected PV topologies
(2009)
Comunicació de congrés
Accés obertControlling the thermal losses in the semiconductors ~s well. as the Co~mon Mode Voltage (CMV), are important Issues In the design of power electronics converters for photovoltaic applications. At present time there are ... -
Modeling and control of a three-phase grid-connected inverter under fault conditions
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe aim of this paper is to study the behavior of a three-phase inverter with an RL filter powered by a renewable energy source and connected to a grid under fault conditions. The novelty of the work lies in proposing a ... -
Modeling and simulation of synchronous machine and its behaviour against voltage sags
(2009)
Comunicació de congrés
Accés obertThis paper studies the effects of voltage sags (dips), both symmetrical and unsymmetrical, on the three-phase Synchronous Machine (SM). The vast majority of the electrical power generation systems in the world is consist ... -
Modeling of a variable speed wind turbine with a permanent magnet synchronous generator
(2009)
Comunicació de congrés
Accés obertThe aim of this work is to analyze a typical configuration of a Wind Turbine Generator System (WTGS) equipped with a Variable Speed Generator. Nowadays, doublyfed induction generators are being widely used on WTGS, although ... -
New smart sensor for voltage unbalance measurements in electrical power systems
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-10-27)
Article
Accés obertThis paper deals with voltage unbalances and how they can be quantified according to the standards. Firstly, a comparison between the different unbalance voltage factors is conducted in order to remark on their divergences. ...
