Enviaments recents

  • An Interactive and comprehensive software tool to promote active learning in the Loop Shaping Control System design 

    Díaz, José Manuel; Costa Castelló, Ramon; Muñoz, R; Dormido Bencomo, Sebastián (Institute of Electrical and Electronics Engineers (IEEE), 2017-06-07)
    Article
    Accés obert
    The classical loop shaping is a design procedure that explicitly involves the shaping of the open loop transfer function L(s), within a desired frequency spectrum by manipulating the poles, zeros, and gain of the controller ...
  • A new approach for flux and rotor resistance estimation of induction motors 

    Bazylev, Dmitry; Dòria Cerezo, Arnau; Pyrkin, Anton A.; Bobstov, Alexey A.; Ortega, Romeo (2017-07-01)
    Article
    Accés restringit per política de l'editorial
    In this paper we address the problems of flux and rotor resistance estimation of induction motors. We propose a radically new approach that combines the recently introduced techniques of parameter estimation based observers ...
  • On average real sliding dynamics in linear systems 

    Olm Miras, Josep Maria; Biel Solé, Domingo; Repecho del Corral, Víctor; Shtessel, Yuri B. (2017-07-01)
    Article
    Accés obert
    It is well known that in implementations of sliding mode controllers using hysteresis comparators, when the hysteresis band amplitude tends to zero the real dynamics tends to the ideal sliding dynamics. However, in real ...
  • Optimal power flow for resistive DC networks: a port-hamiltonian approach 

    Benedito Benet, Ernest; del Puerto Flores, Dunstano; Dòria Cerezo, Arnau; Scherpen, Jacquelien (2017-07-01)
    Article
    Accés obert
    This paper studies the optimal power flow problem for resistive DC networks. The gradient method algorithm is written in a port-Hamiltonian form and the stability of the resulting dynamics is studied. Stability conditions ...
  • A local stability condition for dc grids with constant power loads 

    Arocas Pérez, José; Griñó Cubero, Robert (2017-07-01)
    Article
    Accés obert
    Currently, there are an increasing number of power electronics converters in electrical grids, performing the most diverse tasks, but most of them, work as constant power loads (CPLs). This work presents a sufficient ...
  • Canonical realization of (2+1)-dimensional Bondi-Metzner-Sachs symmetry 

    Batlle Arnau, Carles; Campello, Víctor; Gomis Torné, Joaquin (2017-07-12)
    Article
    Accés obert
    We construct canonical realizations of the (2+1)-dimensional Bondi-Metzner-Sachs (bms3) algebra as symmetry algebras of a free Klein-Gordon (KG) field in 2+1 dimensions for both massive and massless cases. We consider two ...
  • Non-relativistic Bondi-Metzner-Sachs algebra 

    Batlle Arnau, Carles; Delmastro, Diego; Gomis Torné, Joaquin (2017-09-21)
    Article
    Accés obert
    We construct two possible candidates for non-relativistic bms(4) algebra in four space-time dimensions by contracting the original relativistic bms(4) algebra. bms(4) algebra is infinite-dimensional and it contains the ...
  • PM-Assisted Synchronous Reluctance Machine flux weakening control for EV and HEV applications 

    Trancho, Elena; Ibarra Basabe, Edorta; Arias Pujol, Antoni; Kortabarria, Iñigo; Jurgens, Jonathan; Marengo, Luca; Fricasse, Antonio; Gragger, Johannes (Institute of Electrical and Electronics Engineers (IEEE), 2017-08-31)
    Article
    Accés obert
    IEEE In this manuscript, a novel robust torque control strategy for Permanent Magnet Assisted Synchronous Reluctance Machine drives applied to electric vehicles and hybrid electric vehicles is presented. Conventional control ...
  • Distributed parameter model-based control of water activity and concentration of reactants in a polymer electrolyte membrane fuel cell 

    Sarmiento Carnevali, Maria Laura; Serra, Maria; Batlle Arnau, Carles (2017-01-01)
    Article
    Accés restringit per política de l'editorial
    Water management is still a key challenge for optimal performance and durability of polymer electrolyte membrane (PEM) fuel cells. Water levels along the channel in a PEM fuel cell present important spatial variations that ...
  • Energy management strategy for fuel cell-supercapacitor hybrid vehicles based on prediction of energy demand 

    Carignano, Mauro; Costa Castelló, Ramon; Roda Serrat, Vicente; Nigro, Norberto; Junco, Sergio; Feroldi, Diego Hernan (2017-08-31)
    Article
    Accés restringit per política de l'editorial
    Offering high efficiency and producing zero emissions Fuel Cells (FCs) represent an excellent alternative to internal combustion engines for powering vehicles to alleviate the growing pollution in urban environments. Due ...
  • Tachyons in the Galilean limit 

    Batlle Arnau, Carles; Gomis Torné, Joaquin; Mezincescu, Luca; Townsend, Paul K. (2017-04-20)
    Article
    Accés obert
    The Souriau massless Galilean particle of “colour” k and spin s is shown to be the Galilean limit of the Souriau tachyon of mass m = ik and spin s. We compare and contrast this result with the Galilean limit of the Nambu-Goto ...
  • Nonlinear predictive control for durability enhancement and efficiency improvement in a fuel cell power system 

    Luna Pacho, Julio Alberto; Jemei, Samir; Yousfi-Steiner, Nadia; Husar, Attila Peter; Serra, Maria; Hissel, Daniel (2016)
    Article
    Accés obert
    In this work, a nonlinear model predictive control (NMPC) strategy is proposed to improve the efficiency and enhance the durability of a proton exchange membrane fuel cell (PEMFC) power system. The PEMFC controller is based ...

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