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Ara es mostren els items 41-60 de 129

    • 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)
      Examen
      Accés restringit a la comunitat UPC

    • 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)
      Examen
      Accés restringit a la comunitat UPC

    • Examen parcial Sistemes Electrònics (SIEK) [Curs 2016-2017. Q2] 

      Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2017-04-07)
      Examen
      Accés restringit a la comunitat UPC

    • 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)
      Examen
      Accés restringit a la comunitat UPC

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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
      Accés obert
      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
      Accés restringit per política de l'editorial
      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 ...

    • Frequency-modulation control of a DC/DC current-source parallel-resonant converter 

      Moradi Ghahderijani, Mohammad; Castilla Fernández, Miguel; Momeneh, Arash; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2017-07-01)
      Article
      Accés obert
      This paper proposes a frequency-modulation control scheme for a dc/dc current-source parallel-resonant converter with two possible configurations. The basic configuration comprises an external voltage loop, an internal ...

    • 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
      Accés restringit per política de l'editorial
      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 ...

    • 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
      Accés obert
      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 ...

    • Local frequency restoration for droop-controlled parallel inverters in islanded microgrids 

      Rey López, Juan Manuel; Rosero Chandi, Carlos Xavier; Velasco García, Manel; Martí Colom, Pau; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2018-01-01)
      Article
      Accés obert
      In islanded microgrids, voltage source inverters working in parallel are expected to provide regulation of the local frequency while granting active power sharing. This paper presents a local control approach at each ...

    • Local secondary control for inverter-based islanded microgrids with accurate active-power sharing under high load conditions 

      Castilla Fernández, Miguel; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Velasco García, Manel; Martí Colom, Pau (Institute of Electrical and Electronics Engineers (IEEE), 2018-06-13)
      Article
      Accés obert
      Local secondary control has been successfully used to regulate the frequency of inverterbased islanded microgrids without using communications. In this scenario, noticeable steady-state deviations have been observed in ...

    • 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
      Accés obert
      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 ...

    • Mitigation of voltage sags with electric-vehicle based microgrids in large parking lots 

      Castilla Fernández, Miguel; Miret Tomàs, Jaume; Borrell Sanz, Angel (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a real-time control strategy for electric-vehicle based microgrids to mitigate voltage sags in large parking lots. It is programmed into the digital processors of the battery chargers and consists on ...

    • Mixing local and distributed reactive power control for balancing inverters' effort in grid-connected photovoltaic systems 

      Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Reactive power control methods have been proven to be a successful technique for maintaining voltages of photovoltaic (PV) distributed generators (DG) within the admissible limits without enforcing to reduce the production ...

    • Mixing local and distributed reactive power control for balancing inverters’ effort in grid-connected photovoltaic systems 

      Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Reactive power control methods have been proven to be a successful technique for maintaining voltages of photo-voltaic (PV) distributed generators (DG) within the admissible limits without enforcing to reduce the production ...

    • Model-based active damping control for three-phase voltage source inverters with LCL filter 

      Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Morales López, Javier; Castilla Fernández, Miguel; Miret Tomàs, Jaume (2016-09-02)
      Article
      Accés obert
      This paper presents a robust model-based active damping control in natural frame for a three-phase voltage source inverter with LCL filter. The presence of the LCL filter complicates the design of the control scheme, ...

    • Model-based control for a three-phase shunt active power filter 

      Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Morales López, Javier; Castilla Fernández, Miguel; Miret Tomàs, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2016-03-10)
      Article
      Accés obert
      This paper presents a robust model-based control in natural frame for a three-phase shunt active power filter. For the proposed control method a linear converter model is deduced. Then, this model is used in a Kalman ...

    • Modeling and sliding mode control for three-phase active power filters using vector operation technique 

      Morales López, Javier; García de Vicuña Muñoz de la Nava, José Luis; Guzmán Solà, Ramon; Castilla Fernández, Miguel; Miret Tomàs, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2018-01-23)
      Article
      Accés restringit per política de l'editorial
      Traditionally, the vector operation technique has been used to control three-phase converters using one cycle control. In this paper, a three-phase active power filter large-signal model with vector operation technique in ...