Now showing items 1-20 of 56

    • A distributed control for accurate active-power sharing in islanded microgrids subject to clock drifts 

      Alfaro Aragón, Carlos Arturo; Castilla Fernández, Miguel; Camacho Santiago, Antonio; Martí Colom, Pau; Velasco García, Manel (2021-01-28)
      Article
      Open Access
      Inverters-based islanded microgrids are operated by local digital signal processors, driven by their own local clocks. These local clocks have drifts affecting the clock signals which are used to control the inverters in ...
    • Active power sharing and frequency regulation in droop-free control for islanded microgrids under electrical and communication failures 

      Rosero Chandi, Carlos Xavier; Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-01)
      Article
      Open Access
      The droop-free control for ac microgrids achieves active power sharing and frequency regulation by replacing the centralized secondary control and the primary-level droop mechanism by a cooperative distributed control ...
    • An alternative discrete-time model for networked control systems with time delay less than the sampling period 

      Torres Guerrero, Gina; Velasco García, Manel; Martí Colom, Pau; Martín Rull, Enric Xavier; Fuertes Armengol, José Mª (2013)
      Conference lecture
      Restricted access - publisher's policy
      The majority of existing Networked Control Systems (NCS) models are discrete-time formulations based on the exact discretization of the continuous-time linear plant over a sample interval. In the state-space formalism, ...
    • Analysis of consensus-based islanded microgrids subject to unexpected electrical and communication partitions 

      Rosero Chandi, Carlos Xavier; Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2018-01-01)
      Article
      Open Access
      Microgrids are power systems consisting of an electrical network composed by distributed loads and generation units that may include a communication network for improved operation. The considered microgrid in islanded mode ...
    • Analysis of the effect of clock drifts on frequency regulation and power sharing in inverter-based islanded microgrids 

      Martí Colom, Pau; Torres Martínez, Javier; Rosero Chandi, Carlos Xavier; Velasco García, Manel; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2018-02-12)
      Article
      Open Access
      Local hardware clocks in physically distributed computation devices hardly ever agree because clocks drift apart and the drift can be different for each device. This paper analyses the effect that local clock drifts have ...
    • Cálculo de la odometría en un robot cuadrúpedo mediante técnicas de visión artificial 

      Lillo Fantova, Lucía; Velasco García, Manel; Angulo Bahón, Cecilio (2015)
      Conference lecture
      Restricted access - publisher's policy
      En una primera fase, se hizo posible publicar las imágenes obtenidas por la cámara del robot AIBO a través del entorno de programacion ROS, un estándar en la programacion de robots moviles. Estas imágenes, pueden ser ...
    • Collaborative voltage unbalance elimination in grid-connected AC microgrids with grid-feeding inverters 

      Borrell, Angel; Velasco García, Manel; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Martí Colom, Pau; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2021-06-01)
      Article
      Open Access
      The control flexibility of the power inverters that interface distributed generation can be exploited to incorporate power quality enhancement features in addition to the usual power management control. This article presents ...
    • Communication-aware consensus for frequency restoration in islanded microgrids 

      Martí Colom, Pau; Velasco García, Manel; Martín Rull, Enric Xavier; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      MicroGrids (MGs) include spatially distributed generation (DG) systems and loads that may require operating autonomously in islanded mode. The operation of islanded MGs can benefit from consensus theory and practice, ...
    • Comparative study of reactive power control methods for photovoltaic inverters in low-voltage grids 

      Momeneh, Arash; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Martí Colom, Pau; Velasco García, Manel (2016-03-01)
      Article
      Open Access
      The increasing installation of photovoltaic panels in low-voltage grids causes an over voltage problem, especially during high production and low consumption periods. Generally the over voltage problem is overcome by ...
    • Condition assessment of industrial gas turbine compressor using a drift soft sensor based in autoencoder 

      Castro Cros, Martí de; Rosso, Stefano; Bahilo, Edgar; Velasco García, Manel; Angulo Bahón, Cecilio (Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-12)
      Article
      Open Access
      Maintenance is the process of preserving the good condition of a system to ensure its reliability and availability to perform specific operations. The way maintenance is nowadays performed in industry is changing thanks ...
    • Conectando el Robot AIBO a ROS: Extracción de imágenes 

      Lillo Fantova, Lucía; Téllez Lara, Ricardo; Velasco García, Manel; Angulo Bahón, Cecilio (2015)
      Conference report
      Open Access
      En este documento se realiza una introduccion al trabajo realizado con el robot AIBO, de Sony, para la obtencion de imagenes, asi como su tratamiento con el objetivo que el robot navegue de forma autonoma mediante algoritmos ...
    • Consensus for active power sharing and frequency restoration in islanded microgrids subject to drifting clocks 

      Rosero Chandi, Carlos Xavier; Martí Colom, Pau; Velasco García, Manel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      The application of consensus theory in the control of islanded microgrids (MG) is gaining increased attention because it facilitates the development of distributed control solutions. In particular, its application to active ...
    • Design of a hands-on course in networked control systems 

      Fuertes Armengol, José Mª; Villa Millaruelo, Ricardo; Ayza Graells, Jordi; Marès Martí, Pere; Martí Colom, Pau; Velasco García, Manel; Yépez Castillo, José Gregorio; Torres Guerrero, Gina (2012-01-17)
      External research report
      Open Access
      This report presents a hands-on course in networked control systems (NCS) to be integrated in the education of embedded control systems engineers. The course activities have a strong practical component and most of them ...
    • Design of an embedded control system laboratory experiment 

      Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª; Camacho Santiago, Antonio; Buttazzo, Giorgio (2010-02-08)
      Article
      Open Access
    • Design of an embedded control system laboratory experiment 

      Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª; Camacho Santiago, Antonio; Buttazzo, Giorgio (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-10-01)
      Article
      Restricted access - publisher's policy
      This paper presents a prototype laboratory experiment to be integrated in the education of embedded control system engineers. The experiment, a real-time control of a dynamical system, is designed to drive students to a ...
    • Designing a practical course in networked control systems 

      Fuertes Armengol, José Mª; Villa Millaruelo, Ricardo; Ayza Graells, Jordi; Marès Martí, Pere; Martí Colom, Pau; Velasco García, Manel; Yépez Castillo, José Gregorio; Torres Guerrero, Gina; Perelló, Miquel (2012)
      Conference report
      Open Access
      This paper presents a hands-on course in networked control systems (NCS) to be integrated in the education of embedded control systems engineers. The course activities have a strong practical component and most of them are ...
    • Distributed reactive power control methods to avoid voltage rise in grid-connected photovoltaic power generation systems 

      Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2013)
      Conference report
      Restricted access - publisher's policy
      A high density of grid-connected photovoltaic (PV) power generation systems is expected to occur in urban areas. The connection of distributed generation (DG) may cause serious problems in the distribution system such ...
    • Droop-free hierarchical control strategy for inverter-based AC microgrids 

      Rey, Juan M.; Vergara Barrios, Pedro P.; Castilla Fernández, Miguel; Camacho Santiago, Antonio; Velasco García, Manel; Martí Colom, Pau (2020-05-20)
      Article
      Open Access
      Hierarchical schemes are widely used for the design of inverter-based AC microgrids control strategies. To ensure a reliable operation, hierarchical control must consider together all the functionalities that allow the ...
    • Efficient utilization of bus idle times in CAN-based networked control systems 

      Martí Colom, Pau; Camacho Santiago, Antonio; Velasco García, Manel; El Mongi Ben Gaid, Mohamed (2010)
      Conference lecture
      Open Access
      This paper presents a novel approach to networked control systems (NCS) analysis and design that provides increased control performance for a set of control loops that exchange control data over the Controller Area Network ...
    • Embedding Kalman techniques in the one-shot task model when non-uniform samples are corrupted by noise 

      Lozoya, Camilo; Romero, Julio; Martí Colom, Pau; Velasco García, Manel; Fuertes Armengol, José Mª (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Conference report
      Open Access
      The performance of several closed-loop systems whose controllers concurrently execute in a multitasking realtime system may be deteriorated due to timing uncertainties in tasks´executions, problem known as scheduling ...