• Advanced condition monitoring of Pelton turbines 

      Egusquiza Montagut, Mònica; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Presas Batlló, Alexandre; Valentín Ruiz, David; Bossio, Matias (2018-04)
      Article
      Accés obert
      The ability of hydropower to adapt the electricity generation to the demand is necessary to integrate wind and solar energy into the electrical grid. Nowadays, hydropower turbines are required to work under harsher operating ...
    • Experimental validation in a controlled environment of a methodology for assessing the dynamic behavior of railway track components 

      Reina, Salvatore; Ayabaca, Cèsar; Venegas, Diego; Zambrano, Iván; Venegas, William; Vila, Carlos; Ordóñez Izquierdo, Víctor Hugo (2022-05-19)
      Article
      Accés obert
      This article presents a novel methodology conducted under controlled laboratory conditions to assess the dynamic behavior of the components of railway tracks by applying an unbalanced mass excitation force. The methodology ...
    • Numerical study on the dynamic behavior of a francis turbine runner model with a crack 

      Zhang, Ming; Valentín Ruiz, David; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Zhao, Weiqiang (2018-01-01)
      Article
      Accés obert
      Crack appearance in the blade is the most common type of fatigue damage in Francis turbines. However, it is sometimes difficult to detect cracks in time using the current monitoring system, even when they are very large. ...
    • Sensor-based optimized control of the full load instability in large hydraulic turbines 

      Presas Batlló, Alexandre; Valentín Ruiz, David; Egusquiza Montagut, Mònica; Valero Ferrando, Ma. del Carmen; Egusquiza Estévez, Eduard (Multidisciplinary Digital Publishing Institute (MDPI), 2018-03-30)
      Article
      Accés obert
      Hydropower plants are of paramount importance for the integration of intermittent renewable energy sources in the power grid. In order to match the energy generated and consumed, Large hydraulic turbines have to work under ...
    • Univariate and multivariate control charts for monitoring dynamic-behavior processes: a case study 

      Haridy, Salah; Wu, Zhang (School of Industrial and Aeronautic Engineering of Terrassa (ETSEIAT). Universitat Politècnica de Catalunya (UPC), 2009-12)
      Article
      Accés obert
      The majority of classic SPC methodologies assume a steady-state (i.e., static) process behavior (i.e., the process mean and variance are constant) without the influence of the dynamic behavior (i.e., an intended or unintended ...