Ara es mostren els items 1-20 de 37

  • Active and reactive power strategies with peak current limitation for distributed generation inverters during unbalanced grid faults 

    Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Borrell Sanz, Angel; García de Vicuña Muñoz de la Nava, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2015-03-01)
    Article
    Accés obert
    Distributed generation inverters have become a key element to improve grid efficiency and reliability, particularly during grid faults. Under these severe perturbations, inverter-based power sources should accomplish ...
  • 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)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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 LMI approach to H_ synchronization of second-order neutral master-slave systems 

    Reza Karimi, Hamid; Zapateiro, Mauricio; Luo, Ningsu; Rossell Garriga, Josep Maria (American Automatic Control Council, 2009-06-10)
    Text en actes de congrés
    Accés obert
    The H_ synchronization problem of the master and slave structure of a second-order neutral master-slave systems with time-varying delays is presented in this paper. Delaydependent sufficient conditions for the design of a ...
  • Application of subsynchronous damping controller to static var compensator 

    Ghorbani, Hamidreza; Moghadam, Davoud Esmaeil; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2015)
    Text en actes de congrés
    Accés obert
    This paper proposes a new auxiliary Subsynchronous Damping Controller (SSDC) for the Static Var Compensator (SVC) to damp out subsynchronous oscillations in power system containing series compensated transmission lines. ...
  • Collective behavior of chaotic oscillators with environmental coupling 

    Quintero Quiroz, Carlos Alberto; Cosenza, M. G (2015-02-01)
    Article
    Accés restringit per política de l'editorial
  • Cooperative signal amplification for molecular communication in nanonetworks. 

    Abadal Cavallé, Sergi (Universitat Politècnica de Catalunya, 2011-09-19)
    Projecte Final de Màster Oficial
    Accés obert
    English: Nanotechnology is enabling the development of devices in a scale ranging from a few to hundreds of nanometers. Communication between these devices greatly expands the possible applications, increasing the complexity ...
  • Coordination of multi-agent Euler-Lagrange systems via energy-shaping: Networking improves robustness 

    Nuño, Emmanuel; Ortega, Romeo; Jayawardhana, Bayu; Basañez Villaluenga, Luis (2013-10-01)
    Article
    Accés restringit per política de l'editorial
    In this paper, the robust coordination of multi-agent systems via energy-shaping is studied. The agents are nonidentical, Euler–Lagrange systems with uncertain parameters which are regulated (with and without exchange of ...
  • Delay-induced synchronization phenomena in an array of globally coupled logistic maps 

    Martí, A. C.; Masoller Alonso, Cristina (2003-05)
    Article
    Accés obert
    We study the synchronization of a linear array of globally coupled identical logistic maps. We consider a time-delayed coupling that takes into account the finite velocity of propagation of the interactions. We find globally ...
  • Delayed coupling of logistic maps 

    Masoller Alonso, Cristina; Cavalcante, Hugo; Rios Leite, José R. (2001-08)
    Article
    Accés obert
    We study the synchronization of logistic maps in a one-way coupling configuration. The master system is coupled to the slave system with a delay n1, and the slave is a delayed logistic map with a delay n2. We show that ...
  • Design of highly synchronizable and robust networks 

    Estrada Roger, Ernesto; Gago Álvarez, Silvia; Caporossi, Gilles (2010-11)
    Article
    Accés restringit per política de l'editorial
    In this paper, the design of highly synchronizable, sparse and robust dynamical networks is addressed. Better synchronizability means faster synchronization of the oscillators, sparsity means a low ratio of links per ...
  • Digital Communication System with Multi-carrier Modulation (OFDM) for Power Line Communication 

    Ramírez Jávega, Francisco (Universitat Politècnica de Catalunya, 2008-10)
    Projecte/Treball Final de Carrera
    Accés obert
    Se propone el un diseño para un receptor OFDM. El esquema de sincronismo esta dividido en cuatro partes para estimar el sincronismo de los simboles, el offset frecuencial y el canal de transmision. Se implementa un esquema ...
  • Feasibility study of geosynchronous SAR satellites 

    Guzmán Bofarull, Marc (Universitat Politècnica de Catalunya, 2014-07-11)
    Projecte/Treball Final de Carrera
    120 months embargo
    [ANGLÈS] The project is a feasibility study of a new mission concept of Earth Observation based on GEOsynchronous SAR satellites (GEOSAR). More specifically the bistatic GEOSAR is analysed, with the transmitter and receiver ...
  • Generalized voltage droop strategy for power synchronization control in multi-terminal DC grids: an analytical approach 

    Rouzbehi, Kumars; Zhang, Weiyi; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2015)
    Text en actes de congrés
    Accés obert
    Vector current control based on Phase-locked loop, regardless of its popularity in control of grid-connected converters, performs under the limitation of the short-circuit capacity of the connected ac system. A previously ...
  • Hardware-efficient implementation of a femtocell/macrocell interference-mitigation technique for high-performance LTE-based systems 

    Font Bach, Oriol; Bartzoudis, Nikolaos; Pascual Iserte, Antonio; Payaró Llisterri, Miquel (2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents the FPGA design of an interference-aware digital front end tailored for heterogeneous multi-cell LTE-based systems. A resource-optimized RTL architecture has been implemented and validated under realistic ...
  • Identification of Obstructive Sleep Apnea patients from tracheal breath sound analysis during wakefulness in polysomnographic studies 

    Solà Soler, Jordi; Fiz Fernández, José Antonio; Torres Cebrián, Abel; Jané Campos, Raimon (2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Obstructive Sleep Apnea (OSA) is currently diagnosed by a full nocturnal polysomnography (PSG), a very expensive and time-consuming method. In previous studies we were able to distinguish patients with OSA through formant ...
  • Implementing static synchronous sensor fields using NiMo 

    Clérici Martínez, Silvia Inés; Duch Brown, Amalia; Zoltan Torres, Ana Cristina (2009-05)
    Report de recerca
    Accés obert
    In this work we present some implementations of a Static Synchronous Sensor Field (SSSF), a static and synchronous model for sensor networks in which a finite set of sensing devices are geographically distributed and can ...
  • Maximum likelihood estimation of position in GNSS 

    Closas Gómez, Pau; Fernández Prades, Carlos; Fernández Rubio, Juan Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-05)
    Article
    Accés obert
    In this letter, we obtain the Maximum Likelihood Estimator of position in the framework of Global Navigation Satellite Systems. This theoretical result is the basis of a completely different approach to the positioning ...
  • Obtaining synchronization-free code with maximum parallelism 

    Gavaldà Mestre, Ricard; Ayguadé Parra, Eduard; Torres Viñals, Jordi (1996-03)
    Report de recerca
    Accés obert
    This paper addresses the problem of extracting the maximum synchronization-free parallelism that may be present in loops. In order to reduce communication and synchronization overheads, some parallelizing compilers ...
  • Parallelization of BiCGMisR method with cache-cache elements preconditioning 

    Iwasato, K.; Fujino, S. (CIMNE, 2015)
    Comunicació de congrés
    Accés obert
    We consider Krylov subspace methods for solving a linear system of equations on parallel computer with distributed memory. For speed-up of parallel computation, it is necessary to shorten the communication time among ...
  • PARSECSs: Evaluating the impact of task parallelism in the PARSEC benchmark suite 

    Chasapis, Dimitrios; Casas Guix, Marc; Moreto Planas, Miquel; Vidal Ortiz, Raul; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (2015-12-01)
    Article
    Accés obert
    In this work, we show how parallel applications can be implemented efficiently using task parallelism. We also evaluate the benefits of such parallel paradigm with respect to other approaches. We use the PARSEC benchmark ...