Now showing items 1-20 of 173

    • A model predictive control-based energy management scheme for hybrid storage system in islanded microgrids 

      Raveendran Nair, Unnikrishnan; Costa Castelló, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2020-05-21)
      Article
      Open Access
      Model predictive control (MPC) facilitates online optimal resource scheduling in electrical networks, thermal systems, water networks, process industry to name a few. In electrical systems, the capability of MPC can be ...
    • 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 novel energy management strategy for fuel-cell/supercapacitor hybrid vehicles 

      Carignano, Mauro; Costa Castelló, Ramon; Nigro, Norberto; Junco, Sergio (2017-07-01)
      Article
      Open Access
      Hybrid platforms powered by fuel cell and supercapacitor represent a powertrain with active state-dependent constraints, providing an adverse scenario for the energy management. In these platforms, the performance of the ...
    • A novel energy management strategy for fuel-cell/supercapacitor hybrid vehicles. 

      Carignano, Mauro; Costa Castelló, Ramon; Nigro, Norberto; Junco, Sergio (Elsevier, 2017)
      Conference report
      Open Access
      Hybrid platforms powered by fuel cell and supercapacitor represent a powertrain with active state-dependent constraints, providing an adverse scenario for the energy management. In these platforms, the performance 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 control scheme for distributed solar collector field 

      Berdugo de Moya, Iván Rafael; Costa Castelló, Ramon; Berenguel, M; Yebra, José Luis A. (2010-05)
      Article
      Restricted access - publisher's policy
      The control of the output fluid temperature in a distributed solar collector field implies accounting for the excitement of its intrinsic resonance modes. Resonance mode frequencies are related to the residence time of the ...
    • 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 survey of repetitive control in varying frequency conditions 

      Fuentes, G.A.R.; Olm Miras, Josep Maria; Costa Castelló, Ramon (2011-08)
      Article
      Open Access
      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 ...
    • 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 ...
    • Adaptive estimation of time-varying parameters with application to roto-magnet plant 

      Na, Jing; Xing, Yashan; Costa Castelló, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2018-12-10)
      Article
      Open Access
      This paper presents an alternative adaptive parameter estimation framework for nonlinear systems with time-varying parameters. Unlike existing techniques that rely on the polynomial approximation of time-varying parameters, ...
    • 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
      Restricted access - publisher's policy
      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 online parameter estimation algorithm of PEM fuel cells 

      Xing, Yashan; Jing, Na; Costa Castelló, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Open Access
      Since most of fuel cell models are generally nonlinearly parameterized functions, existing modeling techniques rely on the optimization approaches and impose heavy computational costs. In this paper, an adaptive online ...
    • Adaptive parameter estimation-based observer design for nonlinear systems 

      Xing, Yashan; Jing, Na; Costa Castelló, Ramon; Gao, Guanbin (2020)
      Conference report
      Open Access
      In this paper, alternative adaptive observers are developed for nonlinear systems to achieve state observation and parameter estimation of nonlinear systems simultaneously. The proposed observers are derived from the ...
    • An adaptive disturbance rejection control scheme for voltage regulation in DC micro-grids 

      Raveendran Nair, Unnikrishnan; Costa Castelló, Ramon; Ramos Fuentes, German A. (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Open Access
      Uncertain generation by renewable sources and load variations have resulted in adding energy storage systems in the grid to maintain grid parameters (voltage, frequency) within prescribed limits. The disturbances being ...
    • An analysis of energy storage system interaction in a multi objective model predictive control based energy management in DC microgrid 

      Raveendran Nair, Unnikrishnan; Costa Castelló, Ramon (2019)
      Conference report
      Open Access
      Non-deterministic generation from renewable sources have resulted in the incorporation energy storage systems in modern grids. Management of energy between different storage elements need to done optimally to ensure efficient ...
    • An analysis of multi objective energy scheduling in PV-BESS system under prediction uncertainty 

      Raveendran Nair, Unnikrishnan; Sandelic, Monika; Sangwongwanich, Ariya; Dragicevic, Tomislav; Costa Castelló, Ramon; Blaabjerg, Frede (2021-01-01)
      Article
      Open Access
      Energy storage systems (ESSs) are being considered to overcome issues in modern grids, caused by increasing penetration of renewable generation. Nevertheless, integration of ESS should also be supplemented with an optimal ...
    • An educational approach to the internal model principle for periodic signals 

      Costa Castelló, Ramon; Olm Miras, Josep Maria; Vargas, Hector; Ramos Fuentes, Germán Andrés (2012-08)
      Article
      Open Access
      This article presents an educational approach to resonant control and repet- itive control, which are Internal Model Principle-based control techniques speci cally de- signed for the tracking/rejection of periodic signals. ...
    • 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
      Open Access
      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 ...
    • An interactive teaching/learning approach to the design of robust linear control systems using the closed-loop shaping methodology 

      Díaz Martínez, José Manuel; Dormido Bencomo, Sebastián; Costa Castelló, Ramon (2020)
      Conference lecture
      Open Access
      Usually the controller is designed working on the open-loop transfer function. However, it is also possible to design the controller working on the closed-loop transfer functions. The closed-loop shaping methodology o ers ...
    • An interactive tool to introduce the waterbed effect 

      Costa Castelló, Ramon; Dormido Bencomo, Sebastián (2015)
      Conference report
      Restricted access - publisher's policy
      Linear control systems are subject to design constraints. Most of these constraints are intrinsic properties of linear systems which can be explained in terms of complex variable theory. In this work a tool designed to ...