Browsing by Author "Costa Castelló, Ramon"
Now showing items 1-20 of 221
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A model predictive control-based energy management scheme for hybrid storage system in islanded microgrids
(Institute of Electrical and Electronics Engineers (IEEE), 2020-05-21)
Article
Open AccessModel 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 nonlinear observer for liquid water estimation in fuel cells
(Institute of Electrical and Electronics Engineers (IEEE), 2024-05)
Article
Restricted access - publisher's policyFuel cells are electrochemical devices with some internal variables that cannot be measured, but have to be monitored in real-time. That is the case for the liquid water inside the fuel cell catalyst layer. This motivates ... -
A new passive repetitive controller for discrete-time finite-frequency positive-real systems
(IEEE Control Systems Society, 2007)
Conference report
Open AccessThis 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
(2017-07-01)
Article
Open AccessHybrid 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.
(Elsevier, 2017)
Conference report
Open AccessHybrid 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
(Institute of Electrical and Electronics Engineers (IEEE), 2009-04)
Article
Open AccessThis 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
(2010-05)
Article
Restricted access - publisher's policyThe 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
(2006-10-23T14:07:36Z)
Research report
Open AccessThis 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
(2011-08)
Article
Open AccessDigital 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 virtual sensor for a cell voltage prediction of a Proton-Exchange Membranes based on intelligent techniques
(Springer Link, 2021)
Conference report
Restricted access - publisher's policyThe use of Proton-Exchange Membranes Fuel Cells is presented as a key alternative to face the increasing and concerning problems related to global warming. The international expansion of green policies, has resulted in the ... -
Adaptive Compensation Strategy For The Tracking/Rejection of Signals with Time-Varying Frequency in Digital Repetitive Control Systems
(2009-09)
Conference report
Open AccessDigital 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
(Institute of Electrical and Electronics Engineers (IEEE), 2021-02-10)
Article
Open AccessThis 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
(2010-02)
Article
Restricted access - publisher's policyA 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 nonlinear parameter estimation for a proton exchange membrane fuel cell
(Institute of Electrical and Electronics Engineers (IEEE), 2022-08)
Article
Open AccessParameter estimation is vital for modeling and control of fuel cell systems. However, the nonlinear parameterization is an intrinsic characteristic in the fuel cell models such that classical parameter estimation schemes ... -
Adaptive online parameter estimation algorithm of PEM fuel cells
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference report
Open AccessSince 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
(2020)
Conference report
Open AccessIn 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 ... -
Addressing the relative degree restriction in nonlinear adaptive observers: A high-gain observer approach
(2022-05)
Article
Open AccessThe design of adaptive observers is a common approach for the joint state and parameter-estimation problem. Nonetheless, there are still some obstacles that have to be solved to improve the design of adaptive observers and ... -
An adaptive disturbance rejection control scheme for voltage regulation in DC micro-grids
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference report
Open AccessUncertain 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
(2019)
Conference report
Open AccessNon-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
(2021-01-01)
Article
Open AccessEnergy 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 ...
