Ara es mostren els items 70-89 de 131

    • Load shedding scheme with under-frequency and undervoltage corrective actions to supply high priority loads in islanded microgrids 

      Nascimento, Bruno de Nadai; Zambroni de Souza, Antonio Carlos; de Carvalho Costa, Joao Guilherme; Castilla Fernández, Miguel (2019-08-19)
      Article
      Accés obert
      In the last few years, microgrids have become a potential solution to improve reliability and security in the supply of electricity to power systems. When a microgrid changes its operation mode from grid-connected to ...
    • 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 ...
    • Microgrid architecture evaluation for small and medium size industries 

      Bandeiras, Filipe; Gomes, Mario; Coelho, Paulo; Fernandes, Jose; Camacho Santiago, Antonio; Castilla Fernández, Miguel (De Gruyter, 2018-02-05)
      Article
      Accés obert
    • 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 ...
    • Modelos no lineales y control en modo deslizamiento de convertidores de estructura resonante 

      Castilla Fernández, Miguel (Universitat Politècnica de Catalunya, 1998-05-28)
      Tesi
      Accés obert
      El presente trabajo de investigación se ha dedicado al estudio y la caracterización de un conjunto de sistemas electrónicos de potencia basados en convertidores resonantes Quantum con subsistemas de control en modo de ...
    • Monte-Carlo probabilistic valuation of concentrated solar power systems in Spain under the 2014 retroactive regulatory framework 

      Coronas Herrero, Sergio; Martín Cañadas, María Elena; Hoz Casas, Jordi de la; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel (2021-03-01)
      Article
      Accés obert
      The current Royal Decree 413/2014 legal-economic framework for concentrating solar power plants in Spain has been analysed from a probabilistic perspective. Due to the high inherent risk in most of the parameters defining ...
    • Multi-layer active power and frequency control strategy for industrial microgrids 

      Rey, Juan Manuel; Solano, Javier; Torres Martínez, Javier; Miret Tomàs, Jaume; Ghahderijani, Mohammad Moradi; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Industrial microgrids require control strategies that guarantee high reliability and power quality. In this paper a multi-layer active power and frequency control strategy for industrial microgrids is presented. It is ...
    • Negative-sequence voltage elimination for distributed generators in grid-feeding operation mode 

      Rey López, Juan Manuel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Velasco García, Manel; Martí Colom, Pau; Mojica Nava, Eduardo (2020-07-24)
      Article
      Accés obert
      A major concern of the power quality in distributed systems is related to the mitigation of voltage imbalances. This function can be implemented directly in the control system of the distributed generation power converters ...
    • On the optimal reactive power control for grid-connected photovoltaic distributed generation systems 

      Velasco García, Manel; Martí Colom, Pau; Torres Martínez, Javier; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The increasing deployment of distributed generation (DG) such as photovoltaic panels (PV) connected to low-voltage (LV) grids is becoming a common trend in urban areas. The advances of information and communication technology ...
    • Optimal tuning of the control parameters of an inverter-based microgrid using the methodology of design of experiments 

      Miret Tomàs, Jaume; Balestrassi, Pedro Paulo; Camacho Santiago, Antonio; Guzmán Solà, Ramon; Castilla Fernández, Miguel (2020-10-01)
      Article
      Accés obert
      The design of the control system in an inverter-based microgrid is a challenging problem due to the large number of parameters involved. Different optimisation methods based on obtaining an approximated mathematical model ...
    • Optimal voltage-support control for distributed generation inverters in RL grid-faulty networks 

      Garnica López, Miguel Andrés; García de Vicuña Muñoz de la Nava, José Luis; Miret Tomàs, Jaume; Castilla Fernández, Miguel; Guzmán Solà, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2019-10-30)
      Article
      Accés obert
      During grid faults, the stability and reliability of the network are compromised, and the risk of a widespread disconnection of distributed generation power facilities is increased. Distributed generation inverters must ...
    • Optimizing voltage support using electric vehicles in an islanded microgrid under voltage sags 

      Miret Tomàs, Jaume; Castilla Fernández, Miguel; Borrell Sanz, Àngel (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The number of electric vehicles connected to the grid is growing constantly due to environmental and regulatory issues. Using these connected vehicles as distributed generators is a promising future functionality, known ...
    • Performance analysis of frequency restoration for parallel voltage source inverters connected with a realistic communication channel 

      Martí Colom, Pau; Velasco García, Manel; Martín Rull, Enric Xavier; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Torres Martínez, Javier (2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A topic of interest within the microgrid (MG) community is to achieve accurate sharing of active and reactive power among voltage source inverters (VSI) working in parallel while keeping the voltage frequency and amplitude ...