• openAccess   Assessment of Subsynchronous Oscillations in AC grid-connected VSC Systems with Type-4 Wind Turbines 

      Sainz, Luis; Monjo, Lluís; Cheah-Mane, Marc; Liang, Jun The Institution of Engineering and Technology (IET) (2019-10-16)
      Converters are the key for the increasing development of renewable energy generation but their dynamic interaction with the grid has an important impact on stability. Oscillatory instabilities in different grid-connected ...
    • closedAccess   Enhanced Grid Fundamental Positive-Sequence Digital Synchronization Structure 

      Alfonso, j. Carlos; Vague Cardona, José Joaquín; Orts-Grau, Salvador; Gimeno Sales, Francisco José; Seguí Chilet, Salvador Institute of Electrical and Electronics Engineers (IEEE) (2013-01)
      The second-order generalized integrator (SOGI) filter and delayed signal cancellation (DSC) structures have been used separately in order to improve the synchronization systems response in adverse grid conditions. Taking ...
    • closedAccess   Measurement System for a Power Quality Improvement Structure Based on IEEE Std.1459 

      Alfonso, j. Carlos; Orts-Grau, Salvador; Muñoz Galeano, N.; Gimeno Sales, Francisco José; Seguí Chilet, Salvador Institute of Electrical and Electronics Engineers (IEEE) (2013-12)
      This paper presents an IEEE Std. 1459 power magnitude measurement system working as a part of a power quality improvement structure. It is intended to enhance the performance of selective shunt active power compensators ...
    • openAccess   Resonance-Based Procedure for Locating Failed Luminaires in AGL Systems 

      Vidal Lombarte, Daniel; Monjo, Lluís; Sainz, Luis Institute of Electrical and Electronics Engineers (IEEE) (2017-08)
      Aeronautical ground lighting (AGL) systems provide a visual reference for aircraft during airport operations. Fast detection and location of failed luminaires is an important safety concern in AGL systems. In the event of ...