Now showing items 21-40 of 107

    • Control strategy for distribution generation inverters to maximize the voltage support in the lowest phase during voltage sags 

      Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Garnica López, Miguel Andrés (Institute of Electrical and Electronics Engineers (IEEE), 2017-08-07)
      Article
      Open Access
      IEEE Voltage sags are considered one of the worst perturbations in power systems. Distributed generation power facilities are allowed to disconnect from the grid during grid faults whenever the voltage is below a certain ...
    • Control strategy for grid-connected three-phase inverters during voltage sags to meet grid codes and to maximize power delivery capability 

      Garnica López, Miguel Andrés; García de Vicuña Muñoz de la Nava, José Luis; Miret Tomàs, Jaume; Castilla Fernández, Miguel; Guzmán Solà, Ramon (2018-01-12)
      Article
      Open Access
      Inverter-based distributed generation plays a vital role in the stability and reliability of new power systems. Under voltage sags, these systems must remain connected to the electrical network according to the stringent ...
    • Control strategy to maximize the power capability of PV three-phase inverters during voltage sags 

      Sosa, Jorge Luis; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Matas Alcalá, José; Al-Turki, Y.A. (2016-04-01)
      Article
      Open Access
      Under voltage sags, grid-tied photovoltaic inverters should remain connected to the grid according to low-voltage ride-through requirements. During such perturbations, it is interesting to exploit completely the distributed ...
    • Coordinated reactive power control for static synchronous compensators under unbalanced voltage sags 

      Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Matas Alcalá, José; Alarcón Gallo, Eduardo; García de Vicuña Muñoz de la Nava, José Luis (2012)
      Conference report
      Restricted access - publisher's policy
      Unbalanced voltage sags strongly deteriorate the performance of power converters and electrical machines connected to the distribution network. In particular, a reduction of the power quality is noticed in these equipments, ...
    • Design of an analog quasi-steady-state nonlinear current-mode controller for single-phase active power filter 

      Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel; Matas Alcalá, José; Guerrero Zapata, Josep Maria (2009-12)
      Article
      Open Access
      The injection of sinusoidal current to an electrical grid is nowadays possible with the use of active power filters (APFs).With quasi-steady-state (QSS) nonlinear controllers, these power filters provide low ...
    • Distributed reactive power control methods to avoid voltage rise in grid-connected photovoltaic power generation systems 

      Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2013)
      Conference report
      Restricted access - publisher's policy
      A high density of grid-connected photovoltaic (PV) power generation systems is expected to occur in urban areas. The connection of distributed generation (DG) may cause serious problems in the distribution system such ...
    • Dual-core DSP for control and communication in AC microgrids 

      Castilla Fernández, Miguel; Miret Tomàs, Jaume (The Institution of Engineering and Technology, 2016-05-01)
      Part of book or chapter of book
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      Control circuits are a key element in the operation and performance of power electronics converters. This book describes practical issues related to the design and implementation of these control circuits, with a focus on ...
    • Enabling grid-feeding converters with a dissonant-resonant controller for negative-sequence voltage elimination 

      Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Rey López, Juan Manuel; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2020-04-01)
      Article
      Open Access
      The mitigation of the adverse effects of voltage unbalance in equipment and power quality can be performed by the power electronic converters that interface distributed generators to the grid. Inspired in a resonant ...
    • Evaluating the 2014 retroactive regulatory framework applied to the grid connected PV systems in Spain 

      Hoz Casas, Jordi de la; Martín Cañadas, María Elena; Miret Tomàs, Jaume; Castilla Fernández, Miguel; Guzmán Solà, Ramon (2016-05-15)
      Article
      Open Access
      © 2016 Elsevier Ltd. The RD 413/2014 new economic and regulatory framework for producers of electricity from renewable energy sources in Spain has been here analysed, putting the focus on its impact on the economic results ...
    • Examen final [Curs 2017-2018] 

      López García, Mariano; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel; Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2018-06-08)
      Exam
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    • Examen final curs 2016-2017 

      Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2017-01-19)
      Exam
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    • Examen parcial [Curs 2017-2018] 

      Castilla Fernández, Miguel; García de Vicuña Muñoz de la Nava, José Luis; López García, Mariano; Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2018-03-17)
      Exam
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    • Examen parcial [Curs 2018-2019] 

      Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; López García, Mariano; Castilla Fernández, Miguel (Universitat Politècnica de Catalunya, 2019-04-01)
      Exam
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    • Examen parcial Sistemes Electrònics (SIEK) [Curs 2016-2017. Q2] 

      Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2017-04-07)
      Exam
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    • Examen segon parcial i recuperació del primer parcial (SIEK) [Curs 2016-2017. Q2] 

      Castilla Fernández, Miguel; Río Fernandez, Joaquín del; García de Vicuña Muñoz de la Nava, José Luis; López García, Mariano; Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2017-06-23)
      Exam
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    • Experimental study of clock drift impact over droop-free distributed control for industrial microgrids 

      Torres Martínez, Javier; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Ghahderijani, Mohammad Moradi; Rey López, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
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      It is well-know that in systems composed of several digital processors, clock signals of individual units differ from each other due to clock drifts. This paper investigates the effect of clock drifts from voltage source ...
    • Fast grid synchronization technique based on a multiple cascaded general integrator scheme for distributed generation inverters 

      Matas Alcalá, José; Castilla Fernández, Miguel; García de Vicuña Muñoz de la Nava, José Luis; Miret Tomàs, Jaume; Alarcón Gallo, Eduardo; Camacho Santiago, Antonio (2012)
      Conference report
      Restricted access - publisher's policy
      This paper proposes a new structure for grid synchronization based on generalized integrators (GI) that lead to fast detection of positive and negative components of the grid voltage. The GI are used as a band pass ...
    • Finite control set model predictive control for a three-phase shunt active power filter with a kalman filter-based estimation 

      Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio (2017-10-10)
      Article
      Open Access
      In this paper, the finite control set model predictive control is combined with the vector operation technique to be applied in the control of a three-phase active power filter. Typically, in the finite control set technique ...
    • Flexible voltage support control for three-phase distributed generation inverters under grid fault 

      Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Vasquez, Juan C.; Alarcón Gallo, Eduardo (Institute of Electrical and Electronics Engineers (IEEE), 2013-04)
      Article
      Restricted access - publisher's policy
      Ancillary services for distributed generation (DG)systems become a challenging issue to smartly integrate renewable-energy sources into the grid. Voltage control is one of these ancillary services which can ride through ...
    • Grid-fault control scheme for three-phase photovoltaic inverters with adjustable power quality characteristics 

      Castilla Fernández, Miguel; Miret Tomàs, Jaume; Sosa Avendaño, Jorge Luis; Matas Alcalá, José; García de Vicuña Muñoz de la Nava, José Luis (2010-12-23)
      Article
      Restricted access - publisher's policy
      The power quality of a three-phase photovoltaic (PV) inverter drastically deteriorates in the presence of grid faults with unbalanced voltages.Aripple in the injected power and an increase in the current harmonic ...