Now showing items 1-20 of 21

    • A robust grid current controller with grid harmonic and filter resonance damping capabilities using a closed-loop admittance shaping 

      Perez Morales, Jorge; Cóbreces Álvarez, Santiago; Wang, Xiongfei; Blaabjerg, Frede; Griñó Cubero, Robert (IEEE Press, 2017)
      Conference report
      Open Access
      This paper presents a grid current control of a grid connected Voltage Source Converter (VSC) with an LCL filter. The control method enables to shape the input admittance of the converter in addition to track a given current ...
    • A stationary reference frame grid synchronization system for three-phase grid-connected power converters under adverse grid conditions 

      Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Muñoz Aguilar, Raúl Santiago; Etxebarría, Ion; Teodorescu, Remus; Blaabjerg, Frede (2012-01)
      Article
      Restricted access - publisher's policy
      Grid synchronization algorithms are of great importance in the control of grid-connected power converters, as fast and accurate detection of the grid voltage parameters is crucial in order to implement stable control ...
    • Advanced structures for grid synchronization of power converters in distributed generation applications 

      Luna Alloza, Álvaro; Rocabert Delgado, Joan; Candela García, José Ignacio; Rodríguez Cortés, Pedro; Teodorescu, Remus; Blaabjerg, Frede (2012)
      Conference report
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      The Transmission System Operators are specially concerned about the Low Voltage Ride Through requirements of distributed generation power plants. Solutions based on the installation of STATCOMs and DVRs, as well as on ...
    • AI-based damping of electromechanical oscillations by using grid-connected converter 

      Gregory Baltas, Nicholas; Lai, Ngoc Bao; Tarraso Martínez, Andrés; Marín Arévalo, Leonardo Vidal; Blaabjerg, Frede; Rodríguez Cortés, Pedro (2021-03-05)
      Article
      Open Access
      The proliferation of grid-connected converter interfaced energy sources in Smart Grids, enhance sustainability and efficiency as well as minimizing power losses and costs. However, concerns arise regarding the stability ...
    • An analysis of multi objective energy scheduling in PV-BESS system under prediction uncertainty 

      Raveendran Nair, Unnikrishnan; Sandelic, Monika; Sangwongwanich, Ariya; Dragicevic, Tomislav; Costa Castelló, Ramon; Blaabjerg, Frede (2021-01-01)
      Article
      Open Access
      Energy storage systems (ESSs) are being considered to overcome issues in modern grids, caused by increasing penetration of renewable generation. Nevertheless, integration of ESS should also be supplemented with an optimal ...
    • Connection and disconnection transients for micro-grids under unbalance load condition 

      Rocabert Delgado, Joan; Azevedo, Gustavo M.S.; Candela García, José Ignacio; Blaabjerg, Frede; Rodríguez Cortés, Pedro (2011)
      Conference report
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      The recent grid integration of Distributed Energy Resources (DER) possibility the formation of intentional islands in the case of a grid fault conditions. For such island formation is required an active agent capable 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
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      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 ...
    • 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)
      Conference report
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      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 ...
    • Convertidores de frecuencia: retos y aplicaciones futuras 

      Blaabjerg, Frede; Villafafila Robles, Roberto; Thoegersen, Peter; Galceran Arellano, Samuel (Grupo Tecnipublicaciones, 2005-04)
      Article
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      La tecnología de los convertidores de frecuencia está madura en cuanto a su uso en el control de motores, pero la rápida evolución que han sufrido estos equipos en los últimos diez años ha hecho que su aplicación efectiva ...
    • 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)
      Conference report
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      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 ...
    • Detection and mitigation of false data in cooperative dc microgrids with unknown constant power loads 

      Cecilia Piñol, Andreu; Sahoo, Subham; Dragicevic, Tomislav; Costa Castelló, Ramon; Blaabjerg, Frede (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Article
      Open Access
      The rapid development and implementation of distributed control algorithms for DC microgrids has increased the vulnerability of this type of system to false data injection attacks, being one of the most prominent types of ...
    • Detection of partial demagnetization fault in PMSMs operating under nonstationary conditions 

      Wang, Chao; Delgado Prieto, Miquel; Romeral Martínez, José Luis; Chen, Zhe; Blaabjerg, Frede; Liu, Xiaoyan (2016-07-01)
      Article
      Open Access
      Demagnetization fault detection of in-service permanent magnet synchronous machines (PMSMs) is a challenging task, because most PMSMs operate under nonstationary circumstances in industrial applications. A novel approach ...
    • Grid voltage synchronization for distributed generation systems under grid fault conditions 

      Luna Alloza, Álvaro; Rocabert Delgado, Joan; Candela García, José Ignacio; Hermoso Costa, Juan Ramón; Teodorescu, Remus; Blaabjerg, Frede; Rodríguez Cortés, Pedro (2015-07-01)
      Article
      Open Access
      The actual grid code requirements for the grid connection of distributed generation systems, mainly wind and photovoltaic (PV) systems, are becoming very demanding. The transmission system operators (TSOs) are especially ...
    • Model and control of the isolated multi-modular converter 

      Verdugo Retamal, Cristian Andrés; Candela García, José Ignacio; Blaabjerg, Frede; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      Multi-modular converters have proven to be one of the most suitable topology to be used in high and power applications. The modularity of these configurations offer several advantages, such as: high quality voltage, ...
    • Multilevel-clamped multilevel converters (MLC2) 

      Rodríguez Cortés, Pedro; Bellar, Maria Dias; Muñoz Aguilar, Raúl Santiago; Busquets Monge, Sergio; Blaabjerg, Frede (2012-03)
      Article
      Restricted access - publisher's policy
      This letter introduces a new series of multilevel (ML) converters based on the ML clamping concept. By applying this technique, a ML clamping unit (MCU) conveys additional levels for synthesizing the output waveforms ...
    • Robust admittance shaping approach to grid current harmonic attenuation and resonance damping 

      Cóbreces Álvarez, Santiago; Wang, Xiongfei; Pérez Serrano, Jorge; Griñó Cubero, Robert; Blaabjerg, Frede (2018-09-01)
      Article
      Open Access
      This paper presents a novel grid current control of a grid-connected voltage source converter with an LCL filter. The proposed control method uses an H 8 synthesis method to shape the input admittance of the converter, to ...
    • Thermal and efficiency analysis of five-level multi-level clamped multilevel converter considering grid codes 

      Ma, Ke; Muñoz Aguilar, Raúl Santiago; Rodríguez Cortés, Pedro; Blaabjerg, Frede (2013-06-05)
      Article
      Open Access
      In this paper a five-level Multi-Clamped Multilevel Converter (5L-MLC2) topology is analyzed based on a typical grid integration application for renewable energy system. The loss and thermal distribution of the power ...
    • Thermal and efficiency analysis of five-level multi-level clamped multilevel converter considering grid codes 

      Ma, Ke; Muñoz Aguilar, Raúl Santiago; Rodríguez Cortés, Pedro; Blaabjerg, Frede (2012)
      Conference report
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      In this paper a five-level Multi-Clamped Multilevel Converter (5L-MLC2) topology is analyzed based on a typical grid integration application for renewable energy generation system. The loss and thermal distribution of the ...
    • Thermal and efficiency analysis of five-level multilevel-clamped multilevel converter considering grid codes 

      Ke, Ma; Muñoz Aguilar, Raúl Santiago; Rodríguez Cortés, Pedro; Blaabjerg, Frede (2014-02)
      Article
      Restricted access - publisher's policy
      In this paper, a five-level multilevel-clamped multilevel converter (5L-MLC2) topology is analyzed based on a typical grid integration application for renewable energy system. The loss and thermal distributions of the ...
    • Three-phase isolated multi-modular converter in renewable energy distribution systems 

      Verdugo Retamal, Cristian Andrés; Candela García, José Ignacio; Blaabjerg, Frede; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-25)
      Article
      Open Access
      Multilevel converters are widely used in medium and high voltage applications. Their high performance, power quality, efficiency and smaller filters make them interesting for renewable energy distribution systems. In ...