Ara es mostren els items 21-40 de 454

    • A sensor-less sliding mode control scheme for a stand-alone wound rotor synchronous generator under unbalanced load conditions 

      Muñoz Aguilar, Raúl Santiago; Rodríguez Cortés, Pedro; Dòria Cerezo, Arnau; Candela García, José Ignacio; Luna Alloza, Álvaro (2004-09)
      Article
      Accés restringit per política de l'editorial
      This paper presents a sliding mode control for a wound rotor synchronous machine acting as an isolated generator connected to an unbalanced load. In order to simplify the control methodology, the standard dq-model of the ...
    • A simple switching frequency regulated sliding mode controller for a VSI with a full digital implementation 

      Repecho del Corral, Víctor; Biel Solé, Domingo; Olm Miras, Josep Maria (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-06)
      Article
      Accés obert
      This paper describes the design of a first order sliding mode controller for a VSI operating at fixed switching frequency. The proposal is simple, as it does not include any integral or resonant action in the switching ...
    • A sliding mode control for a wound rotor synchronous generator with an isolated RL load 

      Muñoz Aguilar, Raúl Santiago; Dòria Cerezo, Arnau; Fossas Colet, Enric (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Comunicació de congrés
      Accés obert
      In this paper a sliding mode controller for the stator voltage amplitude of a stand-alone wound rotor synchronous generator is presented. The standard dq-model of the electrical machine connected to an isolated inductive ...
    • A sliding mode controlled three wheeled narrow vehicle 

      Fossas Colet, Enric; Roqueiro, Nestor; Gaudezi de Faria, Marcelo (2013)
      Article
      Accés restringit per política de l'editorial
      This paper presents a sliding mode controller for a narrow tilting three-wheeled vehicle. The vehicle is modelled as a dynamic eighteen-order system with two inputs and two outputs, however, a simple third-order model of ...
    • A stator voltage oriented PI controller for the doubly-fed induction machine 

      Batlle Arnau, Carles; Dòria Cerezo, Arnau; Ortega, Romeo (Institute of Electrical and Electronics Engineers, 2007)
      Text en actes de congrés
      Accés obert
      In this paper we propose a new control scheme for the doubly–fed induction machine (DFIM) that offers significant advantages, and is considerably simpler, than the classical vector control method. In contrast with the ...
    • A survey of repetitive control in varying frequency conditions 

      Fuentes, G.A.R.; Olm Miras, Josep Maria; Costa Castelló, Ramon (2011-08)
      Article
      Accés obert
      Digital repetitive control is a strategy that allows tracking/ rejecting periodic signals. Repetitive controllers are designed assuming that the exogenous signal period is constant and known, its main drawback being the ...
    • A transient model for RF cavity analysis under beam loading 

      Hassanzadegan, Hooman; Griñó Cubero, Robert (2010-04)
      Article
      Accés restringit per política de l'editorial
      There are two important considerations in the development of an electrical model for RF cavities to be used for system analysis or LLRF loop design, being: transient response and cavity impedance mismatch. In the literature, ...
    • A unified approach to explain contrary effects of hysteresis and smoothing in nonsmooth systems 

      Bonet Revés, Carles; Martínez-Seara Alonso, M. Teresa; Fossas Colet, Enric; Jeffrey, Mike R. (2017-09-01)
      Article
      Accés obert
      Piecewise smooth dynamical systems make use of discontinuities to model switching between regions of smooth evolution. This introduces an ambiguity in prescribing dynamics at the discontinuity: should the dynamics be given ...
    • A variable structure-based algorithm for adaptive cruise control 

      Dòria Cerezo, Arnau; Olm Miras, Josep Maria; Benedito Benet, Ernest; Biel Solé, Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Comunicació de congrés
      Accés restringit per política de l'editorial
    • Active damping of a DC network with a constant power load: an adaptive observer-based design 

      Machado, Juan; Ortega, Romeo; Astolfi, Alessandro; Arocas Pérez, José; Pyrkin, Anton; Bobtsov, Alexey; Griñó Cubero, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés obert
      This paper proposes a nonlinear, output feedback, adaptive controller to increase the stability margin of a direct-current (DC), small-scale, electrical network containing an unknown constant power load. Due to their ...
    • Active damping of a DC network with a constant power load: an adaptive passivity-based control approach 

      Machado, Juan E.; Arocas Pérez, José; He, Wei; Ortega, Romeo; Griñó Cubero, Robert (2018)
      Comunicació de congrés
      Accés obert
      This paper proposes a nonlinear, adaptive controller to increase the stability margin of a direct-current (DC) small-scale electrical network containing a constant power load, whose value is unknown. Due to their negative ...
    • Active damping: an Hinf model reference approach 

      Pérez, Jorge; Cóbreces Álvarez, Santiago; Griñó Cubero, Robert; Huerta, Francisco; Rodríguez, Francisco Javier (Institute of Electrical and Electronics Engineers (IEEE), 2018-08-01)
      Article
      Accés obert
      This paper focuses on the design of an active-damping controller that shapes the dynamics of an LCL grid connected voltage source converter (VSC) to mimic an L-filter connected VSC. This makes possible to use simpler ...
    • Adaptive Compensation Strategy For The Tracking/Rejection of Signals with Time-Varying Frequency in Digital Repetitive Control Systems 

      Ramos Fuentes, Germán Andrés; Olm Miras, Josep Maria; Costa Castelló, Ramon (2009-09)
      Text en actes de congrés
      Accés obert
      Digital repetitive control is a technique which al- lows to track periodic references and/or reject peri- odic disturbances. Repetitive controllers are usually de- signed assuming a fixed frequency for the signals to ...
    • Adaptive control-based voltage regulation of a magnetically coupled multiport DC-DC converter for electrified vehicles applications 

      Holm Nielsen, Jens Bo; Fossas Colet, Enric; Repecho del Corral, Víctor; Dòria Cerezo, Arnau; Griñó Cubero, Robert (2020)
      Text en actes de congrés
      Accés obert
      This paper presents an adaptive control-based strategy to regulate the output voltage of a a magnetically coupled multiport dc-dc converter aimed at automotive applications. The proposed algorithm renders robustness to ...
    • Adaptive neural network state predictor and tracking control for nonlinear time-delay systems 

      Na, Jing; Ren, Xuemei; Gao, Yan; Griñó Cubero, Robert; Costa Castelló, Ramon (2010-02)
      Article
      Accés restringit per política de l'editorial
      A new adaptive nonlinear state predictor (ANSP) is presented for a class of unknown nonlinear systems with input time-delay. A dynamical identification with neu- ral network (NN) is constructed to obtain NN weights and ...
    • Adaptive predictive robust control for fuel cells hybrid vehicles 

      Degliuomini, Lucas Nieto; Zumoffen, David; Basualdo, Marta; Feroldi, Diego Hernán; Riera, Jordi (Riera Colomer) (2010)
      Text en actes de congrés
      Accés obert
      The transient behavior of a Polymer Electrolyte Membrane Fuel Cell System (PEMFCS) under an efficient Adaptive Predictive Control with Robust Filter (APCWRF) is analyzed. This control scheme is tested to evaluate its ...
    • Admittance-shaped Hinf current controller for grid-connected VSC 

      Perez Morales, Jorge; Cóbreces Álvarez, Santiago; Griñó Cubero, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper introduces an H8 current controller that allows the shaping of power converters’ input admittance in frequency domain, allowing to define not only its magnitude but also its phase. In addition to admittance ...
    • Advances in HOSM Control Design and Implementation for PEM Fuel Cell Systems 

      Kunusch, Cristian; Puleston, Paul; Mayosky, Miguel Angel; Serra, Maria (2009)
      Text en actes de congrés
      Accés obert
      A second order sliding mode strategy to control the air supply and oxygen stoichiometry of a fuel cell based generation system is presented. The control design is accomplished from a complete model of a experimental plant ...
    • Ageing of an oscillator due to frequency switching 

      Bonet Revés, Carles; Jeffrey, Mike R.; Martín de la Torre, Pablo; Olm Miras, Josep Maria (2021-11-01)
      Article
      Accés obert
      If an oscillator is driven by a force that switches between two frequencies, the dynamics it exhibits depends on the precise manner of switching. Here we take a one-dimensional oscillator and consider scenarios in which ...
    • An adaptive observer-based controller design for active damping of a DC network with a constant power load 

      Machado, Juan E.; Ortega, Romeo; Astolfi, Alessandro; Arocas Pérez, José; Pyrkin, Anton A.; Bobtsov, Alexey; Griñó Cubero, Robert (2021)
      Article
      Accés obert
      This article explores a nonlinear, adaptive controller aimed at increasing the stability margin of a direct-current (dc), small-scale, electrical network containing an unknown constant power load (CPL). Due to its negative ...