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Ara es mostren els items 63-82 de 129

    • 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 ...

    • Performance evaluation of secondary control policies with respect to digital communications properties in inverter-based islanded microgrids 

      Martí Colom, Pau; Velasco García, Manel; Martín Rull, Enric Xavier; García de Vicuña Muñoz de la Nava, José Luis; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2016-09-12)
      Article
      Accés obert
      A key challenge for inverted-based microgrids working in islanded mode is to maintain their own frequency and voltage to a certain reference values while regulating the active and reactive power among distributed generators ...

    • PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags 

      Miret Tomàs, Jaume; Garnica López, Miguel Andrés; Castilla Fernández, Miguel; García de Vicuña Muñoz de la Nava, José Luis; Camacho Santiago, Antonio (2018-10-25)
      Article
      Accés obert
      In the recently deregulated power system scenario, the growing number of distributed generation sources should be considered as an opportunity to improve stability and power quality along the grid. To make progress in this ...

    • Positive and Negative Sequence Control Strategies to Maximize the Voltage Support in Resistive-Inductive Grids During Grid Faults 

      Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Guzmán Solà, Ramon (2017-07-27)
      Article
      Accés obert
      Grid faults are one of the most severe perturbations in power systems. During these extreme disturbances, the reliability of the grid is compromised and the risk of a power outage is increased. To prevent this issue, ...

    • Positive sequence voltage control, full negative sequence cancellation and current limitation for static compensators 

      Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Velasco García, Manel; Guzmán Solà, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2021-12)
      Article
      Accés obert
      This paper presents a control scheme in the stationary reference frame for Static Synchronous Compensators that provides three features: 1) regulation of the positive sequence voltage to the nominal value, 2) full cancellation ...

    • Power sharing control in islanded microgrid using event driven communication 

      de Sousa Pérez, Óscar; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Martí Colom, Pau; Guzmán Solà, Ramon (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a novel power sharing control strategy for islanded mode microgrids (MG). The goal is to enable renewable power sources connected to the point of com- mon coupling (PCC) through three-phase three-wire ...

    • Primer parcial [Curs 2018-2019] 

      Río Fernandez, Joaquín del; Prat Tasias, Jordi; Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2018-11-07)
      Examen
      Accés restringit a la comunitat UPC

    • Primer parcial [Curs 2019-2020] 

      Prat Tasias, Jordi; Río Fernandez, Joaquín del; Miret Tomàs, Jaume; Soria Pérez, José Antonio; López García, Mariano; Gayà Suñer, Pedro Francisco (Universitat Politècnica de Catalunya, 2019-11-04)
      Examen
      Accés restringit a la comunitat UPC

    • Re-avaluació [Curs 2018-2019] 

      Prat Tasias, Jordi; Río Fernandez, Joaquín del; Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2019-01-29)
      Examen
      Accés restringit a la comunitat UPC

    • Re-avaluació [Curs 2019-2020] 

      Prat Tasias, Jordi; Río Fernandez, Joaquín del; Miret Tomàs, Jaume; Soria Pérez, José Antonio; López García, Mariano; Gayà Suñer, Pedro Francisco (Universitat Politècnica de Catalunya, 2020-01-23)
      Examen
      Accés restringit a la comunitat UPC

    • Reactive current injection protocol for low-power rating distributed generation sources under voltage sags 

      Miret Tomàs, Jaume; Camacho Santiago, Antonio; Castilla Fernández, Miguel; García de Vicuña Muñoz de la Nava, José Luis; Hoz Casas, Jordi de la (2015-06-01)
      Article
      Accés obert
      Voltage sags are one of the main problems in transmission and distribution networks. This study proposes a voltage support control scheme for grid-connected low-power rating inverters under voltage sags. Voltage support ...

    • Reactive power control for distributed generation power plants to comply with voltage limits during grid faults 

      Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Guzmán Solà, Ramon; Borrell Sanz, Angel (2014-01-20)
      Article
      Accés obert
      Grid faults are one of the most severe problems for network operation. Distributed generation power plants can help to mitigate the adverse effects of these perturbations by injecting reactive power during the sag and the ...

    • Reactive power control for loss minimization in low-voltage distributed generation systems 

      Martí Colom, Pau; Velasco García, Manel; Torres Martínez, Javier; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Dispersed small distributed generation (DG) systems in low-voltage (LV) grids pose diverse challenges for successful grid operation. The main one is to guarantee power quality by ensuring that voltages along all the feeders ...

    • Receding-horizon model predictive control for a three-phase VSI with an LCL filter 

      Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Rey, Juan M (Institute of Electrical and Electronics Engineers (IEEE), 2018-11-20)
      Article
      Accés obert
      This paper presents a Continuous Control Set Model Predictive Control with receding horizon for a threephase voltage source inverter with LCL filter, using a reduced model of the converter. The main advantages of using ...

    • Reduction of Current Harmonic Distortion in Three-Phase Grid-Connected Photovoltaic Inverters via Resonant Current Control 

      Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Matas Alcalá, José; García de Vicuña Muñoz de la Nava, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2013-04)
      Article
      Accés obert
      The resonant current control has been extensively employed to reduce the current harmonic distortion in a wide range of grid-connected distributed generation applications, including photovoltaic (PV) inverters, wind and ...

    • Reliability and energy costs analysis of a rural hybrid microgrid using measured data and battery dynamics: a case study in the coast of Perú 

      Canziani Amico, Franco; Vargas, Raúl; Castilla Fernández, Miguel; Miret Tomàs, Jaume (2021-10-06)
      Article
      Accés obert
      Hybrid microgrids constitute a promising solution for filling the electricity access gap that currently exists in rural areas; however, there is still relatively little information about their reliability and costs based ...