Now showing items 1-12 of 123

    • A sliding-mode control in a new reference frame for three-phase UPFR with extended control range 

      Chico Villegas, José Pascual; Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel; Borrell Sanz, Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2024-06-18)
      Article
      Open Access
      This article presents a new switching strategy for a unity power factor rectifier (UPFR) using sliding-mode control (SMC). The traditional SMC in the natural frame suffers from a cross-coupling problem among controllers ...
    • Robust voltage unbalance control with inherent current sharing in grid-connected microgrids 

      Duarte Mejia, Josue Neftali; Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2024-06-06)
      Article
      Open Access
      Grid-connected ac microgrids (MG) are commonly exposed to voltage quality deterioration due to the presence of voltage imbalance. This article presents a control strategy that enables MG grid-feeding inverters (interfacing ...
    • An analysis of the development of the cogeneration sector in Spain: A comprehensive review of the period 1980–2020 from a regulatory perspective 

      Adamo, Angela; Hoz Casas, Jordi de la; Martín Cañadas, María Elena; Rubio, Joan; Coronas Herrero, Sergio (2024-01-27)
      Article
      Open Access
      Combined Heat and Power (CHP) has been identified by the EU as a powerful resource capable of making substantial contributions to energy savings and reducing GHG emissions. Spain’s effort to promote CHP has been prolific ...
    • Voltage support provided by three-phase three-wire inverters with independent reactive phase-current injection 

      Iñiguez Amigot, José Ignacio; Duarte Mejia, Josue Neftali; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2024)
      Article
      Open Access
      During voltage sags, three-phase three-wire power inverters can provide voltage support with several current injection strategies. In general, good results are ob- tained, except in overvoltage situations when one or more ...
    • Variations of the Gauss Seidel and the gauss implicit z-bus load flow methods for primary-secondary integrated distribution grids 

      Barrenechea Gruber, Roberto Carlos; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel; Rypin, Federico; Paiva Mata, Pedro (Elsevier, 2022-09)
      Article
      Restricted access - publisher's policy
      The primary and secondary distribution grids are typically designed separately and operated with a radial configuration; therefore, specialized load flow methods only applicable to radial or weakly meshed networks are ...
    • Remote multi-nodal voltage unbalance compensation in islanded AC microgrids 

      Duarte Mejia, Josue Neftali; Velasco García, Manel; Martí Colom, Pau; Borrell Sanz, Ángel; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2024-03)
      Article
      Restricted access - publisher's policy
      Microgrids (MG) are exposed to voltage quality deterioration due to the presence of voltage unbalance. To deal with this problem, existing solutions based on Distributed Generation (DG) units interfaced by power electronics ...
    • Revisiting classical controller design and tuning with genetic programming 

      García Sánchez, Carlos Andrés; Velasco García, Manel; Angulo Bahón, Cecilio; Martí Colom, Pau; Camacho Santiago, Antonio (2023-12-09)
      Article
      Open Access
      This paper introduces the application of a genetic programming (GP)-based method for the automated design and tuning of process controllers, representing a noteworthy advancement in artificial intelligence (AI) within the ...
    • A comprehensive methodology for the statistical characterization of solar irradiation: application to the case of Morocco 

      Bouhorma, Naoufal; Martín Cañadas, María Elena; Hoz Casas, Jordi de la; Coronas Herrero, Sergio (Multidisciplinary Digital Publishing Institute, 2023-03-06)
      Article
      Open Access
      The prediction and characterization of solar irradiation relies mostly on either the use of complex models or on complicated mathematical techniques, such as artificial neural network (ANN)-based algorithms. This mathematical ...
    • Analysis of gas turbine compressor performance after a major maintenance operation using an autoencoder architecture 

      Castro Cros, Martí de; Velasco García, Manel; Angulo Bahón, Cecilio (Multidisciplinary Digital Publishing Institute (MDPI), 2023-01-21)
      Article
      Open Access
      Machine learning algorithms and the increasing availability of data have radically changed the way how decisions are made in today’s Industry. A wide range of algorithms are being used to monitor industrial processes and ...
    • Improving voltage imbalance in inverter-based islanded microgrids during line-to-line short circuits 

      Castilla Fernández, Miguel; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Borrell Sanz, Ángel; Alfaro Aragón, Carlos Arturo (2023-08-19)
      Article
      Open Access
      Line-to-line short circuits are the transient disturbances that cause the highest currents as well as the largest voltage imbalances in inverter-based microgrids. This paper presents a control scheme for grid-forming ...
    • Economic and regulatory uncertainty in renewable energy system design: a review 

      Alonso Travesset, Alexandre; Coppiters, Diederik; Martín Cañadas, María Elena; Hoz Casas, Jordi de la (2023-01-12)
      Article
      Open Access
      Renewable energy is increasingly mobilizing more investment around the globe. However, there has been little attention to evaluating economic and regulatory (E&R) uncertainties, despite their enormous impact on the project ...
    • Maximum current injection method for grid-forming inverters in an islanded microgrid subject to short circuits 

      Miret Tomàs, Jaume; Castilla Fernández, Miguel; Velasco García, Manel; Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis (2023-02-03)
      Article
      Open Access
      In islanded microgrids, when a short circuit or a sudden overload occurs, it provokes an abrupt increment in the currents supplied by the generation nodes, which feed the load collaboratively. This is particularly challenging ...