Ara es mostren els items 36-55 de 188

    • Centralized protection strategy for medium voltage DC microgrids 

      Monadi, Mehdi; Gavriluta, Catalin; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2016-08-15)
      Article
      Accés obert
      This paper presents a centralized protection strategy for medium voltage dc (MVDC) microgrids. The proposed strategy consists of a communication-assisted fault detection method with a centralized protection coordinator and ...
    • CIRCUITS ELÈCTRICS (2n quadrimestre, 2a avaluació) 

      Luna Alloza, Álvaro (Universitat Politècnica de Catalunya, 2010-06-04)
      Examen
      Accés restringit a la comunitat UPC
    • Comparative efficiency study of single phase photovoltaic grid connected inverters using PLECS® 

      Rouzbehi, Kumars; Davarifar, M.; Martino, M.; Citro, Costantino; Luna Alloza, Álvaro; Daneshifar, Z.; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Global warming is already having significant and costly effects on our communities, our health, and our climate. Nowadays, In developing countries (G20) around the world, decisions are being considered and a shifting ...
    • Comparison of different power loop controllers for synchronous power controlled grid-interactive converters 

      Zhang, Weiyi; Remón, D.; Mir Cantarellas, Antonio; Luna Alloza, Álvaro; Rocabert Delgado, Joan; Candela García, José Ignacio; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The impact caused by the large scale penetration of renewable energy sources into electrical grid has been given an increasing concern in the past decade. Multiple challenges will occur in the future when the share of the ...
    • Comprehensive analogy between conventional AC grids and DC grids characteristics 

      Rouzbehi, Kumars; Gavriluta, Catalin; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The high penetration of renewable energy resources, such as wind and photovoltaic, as well as the development of power electronics devices play an important role in the development of DC grids. However, the evolution of ...
    • Connection and disconnection transients for micro-grids under unbalance load condition 

      Rocabert Delgado, Joan; Azevedo, Gustavo M.S.; Candela García, José Ignacio; Luna Alloza, Álvaro; Blaabjerg, Frede; Rodríguez Cortés, Pedro (2014-03)
      Article
      Accés restringit per política de l'editorial
      In this paper the design and the implementation of a method oriented to carry out a safe and a stable intentional disconnection, and re-connection, of local micro-grids from the main distribution network under generic grid ...
    • Consells per afrontar un projecte de recerca i innovació - Ideació 

      Luna Alloza, Álvaro (2023-01-06)
      Audiovisual
      Accés obert
      Primer vídeo de la sèrie 'Consells per afrontar un projecte de recerca i innovació', en què Álvaro Luna, professor del Departament d'Enginyeria Elèctrica a l’Escola Superior d'Enginyeries Industrial, Aeroespacial i Audiovisual ...
    • Control of a three-phase active transformer integrating energy storage 

      Vidal León Romay, José David; Tarraso Martínez, Andrés; Candela García, José Ignacio; Rocabert Delgado, Joan; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2023-06-12)
      Article
      Accés obert
      The high penetration of distributed energy sources is changing the paradigm of electrical networks control and management. Nowadays, power conversion systems associated to green energy plants are not only required to deliver ...
    • Control of D-STATCOM during unbalanced grid faults based on DC voltage oscillations and peak current limitations 

      Khoshooei, Arash; Moghani, Javad S.; Milimonfared, Jafar; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2016)
      Text en actes de congrés
      Accés obert
      The safe operation of grid connected power converters during abnormal condition is a key issue in order to guarantee its operation and to avoid undesired trips. In this paper different control methods for the operation of ...
    • Control of DFIG-WT under unbalanced grid voltage conditions 

      Luna Alloza, Álvaro; Rodríguez Cortés, Pedro; Lima, Kleber; Córcoles López, Felipe; Watanabe, Edson H.; Teodorescu, R. (2009)
      Comunicació de congrés
      Accés obert
      The voltage oriented control in the synchronous reference frame (VOC-SRF) have been extensively used for controlling wind turbines based on doubly fed induction generators (DFIG-WTs) through the rotor side converter of ...
    • Control of grid-connected power converters based on a virtual admittance control loop 

      Rodríguez Cortés, Pedro; Candela García, José Ignacio; Citro, Costantino; Rocabert Delgado, Joan; Luna Alloza, Álvaro (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The connection of electronic power converters to the electrical network is increasing mainly due to massive integration of renewable energy systems. However, the electrical dynamic performance of these converters does ...
    • Control of power converters in distributed generation applications under grid fault conditions 

      Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Muñoz Aguilar, Raúl Santiago; Córcoles López, Felipe; Teodorescu, Remus; Blaabjerg, Frede (IEEE, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The operation of distributed power generation systems under grid fault conditions is a key issue for the massive integration of renewable energy systems. Several studies have been conducted to improve the response of ...
    • Control of PV generation systems using the synchronous power controller 

      Rodríguez Cortés, Pedro; Candela García, José Ignacio; Luna Alloza, Álvaro (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The high penetration of distributed generation, as PV or wind power, has forced the Transmission System Operators (TSOs) to set restrictive requirements for the operation of such systems. As it can be extracted from ...
    • Control of STATCOM in wind power plants based on induction generators during asymmetrical grid faults 

      Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Medeiros, G.; Teodorescu, Remus; Blaabjerg, F. (2010)
      Text en actes de congrés
      Accés obert
      This paper explores different strategies to set the reference current of a STATCOM under unbalanced grid voltage conditions. The aim of the proposed control strategies is to provide a set of reactive current references ...
    • Control of VSC-HVDC with electromechanical characteristics and unified primary strategy 

      Zhang, Weiyi; Rouzbehi, Kumars; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2016)
      Text en actes de congrés
      Accés obert
      High voltage dc (HVDC) systems act as the prevailed solution for transmitting offshore wind energy to onshore main grids. Control of the voltage source converters (VSC) in HVDC systems is decisive for the performance. This ...
    • Control proposals for the operation of power converters in wind power systems 

      Luna Alloza, Álvaro; Aguilar, Daniel; Muñoz Aguilar, Raúl Santiago; Córcoles López, Felipe; Rodríguez Cortés, Pedro (IEEE, 2011)
      Text en actes de congrés
      Accés obert
      The wind turbines based on Doubly Fed Induction Generators (DFIG) represent almost the 60% of the installed windpower worldwide. Nowadays most of the existing algorithms, used for regulating the production of active and ...
    • Control strategies for DFIG wind turbines under grid fault conditions 

      Luna Alloza, Álvaro; Rolán Blanco, Alejandro; Medeiros, G.; Rodríguez Cortés, Pedro; Teodorescu, R. (2009)
      Comunicació de congrés
      Accés obert
      The classical control techniques for regulating the active and reactive power delivery in doubly fed induction generators (DFIG), for wind power applications, are normally based on voltage oriented control (VOC) strategies. ...
    • Control strategy for the rotor side converter of a DFIG-WT under balanced voltage sag 

      Lima, Kleber; Luna Alloza, Álvaro; Watanabe, Edson H.; Rodríguez Cortés, Pedro (2009)
      Comunicació de congrés
      Accés obert
      This paper proposes a new control technique to improve the fault-ride through capability of doubly fed induction generators (DFIG). In such generators the appearance of severe voltage sags at the coupling point make ...
    • Current control method for distributed generation power generation plants under grid fault conditions 

      Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Hermoso Costa, Juan Ramón; Etxeberria Otadui, Ion; Teodorescu, Remus; Blaabjerg, Frede (IEEE Computer Society Publications, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The operation of distributed power generation systems under grid fault conditions is a key issue for the massive integration of renewable energy systems. Several studies have been conducted to improve the response of ...
    • Current harmonics cancellation in three-phase four-wire systems by using a four-branch star filtering topology 

      Rodríguez Cortés, Pedro; Candela García, José Ignacio; Luna Alloza, Álvaro; Asiminoaei, Lucian; Teodorescu, R.; Blaabjerg, F. (2009-08)
      Article
      Accés obert
      This paper presents a new solution for filtering current harmonics in three-phase four-wire networks. The original four-branch star (FBS) filter topology presented in this paper is characterized by a particular layout ...