Now showing items 1-20 of 83

  • A cyclo-dissipativity framework for power factor compensation of electrical circuits 

    García Canseco, Eloísa; Griñó Cubero, Robert; Ortega, Romeo; Salichs Vivancos, Miguel; Stankovic, Alexander (2005-10)
    Conference report
    Open Access
    The purpose of this paper is to bring the attention of the control community some of the aspects of the practically important, and mathematically challenging, power factor compensation problem. Our main contribution is ...
  • A Fixed-Frequency Quasi-Sliding Control Algorithm: Application to Power Inverters Design by Means of FPGA Implementation 

    Ramos Lara, Rafael Ramón; Biel Solé, Domingo; Fossas Colet, Enric; Guinjoan Gispert, Francisco (Institute of Electrical and Electronics Engineers (IEEE), 2003-01-31)
    Article
    Open Access
    In this paper a fixed-frequency quasi-sliding control algorithm based on switching surface zero averaged dynamics (ZAD) is reported. This algorithm is applied to the design of a Buck-based inverter, and implemented in a ...
  • A new passive repetitive controller for discrete-time finite-frequency positive-real systems 

    Costa Castelló, Ramon; Wang, Danwei; Griñó Cubero, Robert (IEEE Control Systems Society, 2007)
    Conference report
    Open Access
    This work proposes a new repetitive controller for discrete-time finite-frequency positive-real systems which are required to track periodic references or to attenuate periodic disturbances. The main characteristic of the ...
  • A passive repetitive controller for discrete-time finite-frequency positive-real systems 

    Costa Castelló, Ramon; Wang, Danwei; Griñó Cubero, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2009-04)
    Article
    Open Access
    This work proposes and studies a new internal model for discrete-time passive or finite-frequency positive-real systems which can be used in repetitive control designs to track or to attenuate periodic signals. The main ...
  • A repetitive controller for discrete-time passive systems 

    Costa Castelló, Ramon; Griñó Cubero, Robert (2006-10-23T14:07:36Z)
    External research report
    Open Access
    This work proposes and studies a new repetitive controller for discrete-time systems which are required to track or to attenuate periodic signals. The main characteristic of the proposed controller is its passivity. This ...
  • 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)
    Conference report
    Open Access
    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 transient model for RF cavity analysis under beam loading 

    Hassanzadegan, Hooman; Griñó Cubero, Robert (2010-04)
    Article
    Restricted access - publisher's policy
    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, ...
  • 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)
    Conference report
    Open Access
    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 ...
  • Advances in HOSM Control Design and Implementation for PEM Fuel Cell Systems 

    Kunusch, Cristian; Puleston, Paul; Mayosky, Miguel Angel; Serra, Maria (2009)
    Conference report
    Open Access
    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 ...
  • An algebraic parameter estimation approach to the adaptive observer-controller based regulation of the boost converter 

    Sira-Ramírez, Hebertt; Fossas Colet, Enric; Spinetti Rivera, Mario (Institute of Electrical and Electronics Engineers, 2007-06)
    Conference report
    Open Access
    In this article, a new approach is proposed for the problem of output voltage reference trajectory tracking in a boost converter with unknown, piecewise constant, load resistance values, under the restriction of noisy ...
  • Analysis of a bidirecctional coupled-inductor Cuk converter operating in sliding mode 

    Martínez Salamero, Luis; Calvente Calvo, Francisco Javier; Giral, Roberto; Poveda López, Alberto; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 1998-04-30)
    Article
    Open Access
    Analytic models for a bidirectional coupled-inductor Cuk converter operating in sliding mode are described. Using a linear combination of the converter four state variable errors as a general switching surface, the expression ...
  • Analysis of the control structures for an integrated ethanol processor for proton exchange membrane fuel cell systems 

    Biset, S; Nieto Deglioumini, Lucas; Basualdo, Marta; Garcia Mariel, Vanesa; Serra, Maria (2009)
    Article
    Open Access
    The aim of this work is to investigate which would be a good preliminary plantwide control structure for the process of Hydrogen production from bioethanol to be used in a proton exchange membrane (PEM) accounting only ...
  • Aplicacions interactives per la docència de control amb computador: alguns exemples de llaç obert 

    Fàbregas i Cornellà, Josep (2005-09)
    External research report
    Open Access
    En aquest treball s’han desenvolupat un conjunt que poden ésser de gran utilitat per il•lustrat els diferents aspectes de la teoria presentada en l’assignatura “Control amb Computador” de l’ETSEIB. Aquestes eines són un ...
  • Application of Sliding Mode Control to the design of a Buck-based sinusoidal Generator 

    Biel Solé, Domingo; Fossas Colet, Enric; Guinjoan Gispert, Francisco; Alarcón Cot, Eduardo José; Poveda López, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2001-06)
    Article
    Open Access
    This paper is devoted to the design of a sliding-mode control scheme for a buck-based inverter, with programmable amplitude, frequency, and dc offset, with no external sinusoidal reference required. A general procedure for ...
  • Bounding the output error in a buck power converter using perturbation theory 

    Angulo García, Fabiola; Fossas Colet, Enric; Seara, Tere M.; Olivar, Gerard (Hindawi, 2008-07)
    Article
    Open Access
    We show the main results obtained when applying the average theory to Zero Average Dynamic control technique in a buck power converter with pulse-width modulation (PWM). In particular, we have obtained the bound values for ...
  • Cardiolab: A Virtual Laboratory for the analysis of Human Circulatory System 

    Hernandez, Alher Mauricio; Pierfranco Herrera, Gino; Mañanas Villanueva, Miguel Ángel; Costa Castelló, Ramon (2009-09-23)
    Conference report
    Open Access
    One of the career areas included in the field of Biomedical Engineering is the application of engineering system analysis: physiological modelling, simulation and control. This paper describes a Virtual Laboratory ...
  • Characterisation of fuel cell state using Electrochemical Impedance Spectroscopy analysis 

    Primucci, Mauricio Ariel; Ferrer, Lluís; Serra, Maria; Riera Colomer, Jordi (EHU, 2008)
    Conference report
    Open Access
    One of the most demanding research topics related to the Polymer Electrolyte Membrane Fuel Cell (PEMFC) concerns its reliability. Apart from the security aspects, it is basic to have a diagnosis of the internal state of ...
  • DAE Methods in Constrained Robotic System Simulation: 

    Costa Castelló, Ramon; Griñó Cubero, Robert; Basañez Villaluenga, Luis (Centro de Investigación en Computación, 1998-03)
    Article
    Open Access
    In this paper a DAE formulation is used to model the behaviour of constrained robotic systems. This formulation allows to specify in an easy and clear way the constrained behaviour of a robotic system. In order to better ...
  • Demonstration of the Internal Model Principle by Digital 

    Costa Castelló, Ramon; Nebot, Jordi; Griñó Cubero, Robert (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-02)
    Article
    Open Access
    A key topic in classical control theory is the Internal Model Principle (IMP). A particular case of the IMP for tracking periodic references or attenuating periodic disturbances in closed-loop control systems is a technique ...
  • Description of gasket failure in a 7 cell PEMFC stack 

    Husar, Attila Peter; Serra, Maria; Kunusch, Cristian (Elsevier S.A., 2007)
    Article
    Open Access
    This article presents the data and the description of a fuel cell stack that failed due to gasket degradation. The fuel cell under study is a 7 cell stack. The unexpected change in several variables such as temperature, ...