Ara es mostren els items 1-20 de 120

  • A comparative study of methods for estimating virtual flux at the point of common coupling in grid connected voltage source converters with LCL filter 

    Roslan, Nurul Fazlin; Suul, Jon Are; Luna Alloza, Álvaro; Rocabert Delgado, Joan; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2016)
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    Grid connected Voltage Source Converters (VSCs) with LCL filters usually have voltage measurements at the filter capacitors, while it can be important to control the active or reactive power injection at the grid-side of ...
  • A control strategy for DC-link voltage control containing PV generation and energy storage — An intelligent approach 

    Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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    In this paper, DC-link voltage control in DC microgrids with photovoltaic (PV) generation and battery, is addressed based on an intelligent approach. The proposed strategy is based on the modeling of the power interface, ...
  • Adaptive droop for control of multiterminal DC bus integrating energy storage 

    Gavriluta, Catalin; Candela García, José Ignacio; Rocabert Delgado, Joan; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2015-02-01)
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    Multiterminal dc (MTDC) systems are drawing a lot of interest lately in applications related to distributed generation, especially in those that integrate wind or photovoltaic (PV) generation with energy storage (ES). ...
  • Adaptive droop for primary control in MTDC networks with energy storage 

    Gavriluta, Catalin; Candela García, José Ignacio; Luna Alloza, Álvaro; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro (2013)
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    Multi-terminal DC (MTDC) systems are drawing a lot of interest lately in applications related to distributed generation, especially in those that integrate wind or PV systems together with energy storage. This paper proposes ...
  • Advanced control of a high power converter connected to a weak grid 

    Shahparasti, Mahdi; Catalán, Pedro; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2016)
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    This paper addresses the stability problems of a high power converter connected to a weak grid. The wide range values that grid impedance can take, challenges the stability and the performance of the controllers, which are ...
  • 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)
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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 ...
  • A generalized voltage droop strategy for control of multi-terminal DC grids 

    Rouzbehi, Kumars; Miranian, Arash; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2013)
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    This paper proposes a generalized voltage droop (GVD) control strategy for control and power sharing in voltage source converter (VSC)-based multi-terminal DC (MTDC) grids. In the proposed approach, the conventional voltage ...
  • A generalized voltage droop strategy for control of multiterminal DC grids 

    Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2015-02)
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    This paper proposes a generalized voltage droop (GVD) control strategy for dc voltage control and power sharing in voltage source converter (VSC)-based multiterminal dc (MTDC) grids. The proposed GVD control is implemented ...
  • A hierarchical control structure for multi-terminal VSC-based HVDC grids with GVD characteristics 

    Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2013)
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    This paper presents a hierarchical control structure for Multi terminal HVDC grids. The hierarchical control structure is inspired by the three-layer control structure of largescale AC power systems and it is divided into ...
  • A hybrid power flow controller for flexible operation of multi-terminal DC grids 

    Rouzbehi, Kumars; Miranian, Arash; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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    This paper develops a hybrid power flow controller (HPFC) to take one step forward for building future flexible DC transmission system (FDCTS). The idea for proposing HPFC is inspired by the successful operation of flexible ...
  • An active power synchronizing controller for grid-connected power converters with configurable natural droop characteristics 

    Zhang, Weiyi; Luna Alloza, Álvaro; Candela García, José Ignacio; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro (2015)
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    Improving the dynamics of the widely applied gridconnected power converters has been drawing a lot of interests in recent years. Since the currently installed grid-connected converters doesn’t shown inertia effect in power ...
  • Analysis of ferroresonance effects in distribution networks with distributed source units 

    Monadi, Mehdi; Luna Alloza, Álvaro; Candela García, José Ignacio; Rocabert Delgado, Joan; Fayezizadeh, Mostafa; Rodríguez Cortés, Pedro (2013)
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    The connection of Distributed Generation (DG) units to existing networks may give rise to harmful effects on the network and the DG units itself. Therefore, due to increasing penetration of DG units, it is important to ...
  • Analysis on capability of harmonic damping using active filter acting as resistive harmonic impedance 

    Hasan, Khurshid N Md; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2013)
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    This paper presents the analysis of shunt active filter (SAF) in harmonic damping. SAF with voltage-based detection control act as an active damping and able to attenuate harmonic propagation throughout the power distribution ...
  • An approach to the performance-oriented model of variable-speed wind turbines 

    Rolán Blanco, Alejandro; Luna Alloza, Álvaro; Rocabert Delgado, Joan; Aguilar Galván, Daniel; Vázquez Guzmán, Gerardo (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
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    The aim of this work is to give an approach to the Performance-Oriented Model of Variable-Speed Wind turbines (VSWTs) equipped with permanent magnet synchronous generator (PMSG), and compare it to the component-oriented model. ...
  • A novel approach for voltage control of multi-terminal DC grids with offshore wind farms 

    Rouzbehi, Kumars; Miranian, Arash; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2013)
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    This paper proposes a novel control strategy in multi-terminal DC (MTDC) grids with offshore wind generation based on the idea of generalized voltage droop (GVD). In the proposed strategy, the GVD characteristics are ...
  • An overview of harmonic analysis and resonances of large wind power plant 

    Md. Hasan, Khairul Nisak; Rauma, Kalle; Rodríguez Cortés, Pedro; Candela García, José Ignacio; Muñoz Aguilar, Raúl Santiago; Luna Alloza, Álvaro (IEEE, 2011)
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    This paper presented an overview of harmonic analysis and resonance in large wind power plant. The harmonic related problem becomes a concern as the growing numbers of nonlinear load and the increased possibility of ...
  • Application of imperialist competitive algorithm to design an optimal controller for LFC problem 

    Rakhshani, Elyas; Luna Alloza, Álvaro; Rouzbehi, Kumars; Rodríguez Cortés, Pedro (2012)
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    A novel optimization algorithm is presented to improve the design of optimal controllers for load frequency control problem. This algorithm is applied for two area LFC system with using an output feedback controller. In ...
  • Application of Posicast control method to generator excitation system 

    Ghorbani, Hamidreza; Candela García, José Ignacio; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2014)
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    Application of Posicast control method to generator excitation system is presented in this paper. Presented control method is one of the simplest control design methods which can be installed in generators excitation to ...
  • Application of subsynchronous damping controller to static var compensator 

    Ghorbani, Hamidreza; Moghadam, Davoud Esmaeil; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2015)
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    This paper proposes a new auxiliary Subsynchronous Damping Controller (SSDC) for the Static Var Compensator (SVC) to damp out subsynchronous oscillations in power system containing series compensated transmission lines. ...
  • A proportional resonant controller tuning method for grid connected power converters with LCL+trap filter 

    Zhang, Weiyi; Mir Cantarellas, Antonio; Remón, D.; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2014)
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    Three-phase power converters are largely employed in power generation facilities based on renewable energy sources, and these converters commonly working in grid connection mode are frequently connected to the grid through ...