Recent Submissions

  • Enabling grid-feeding converters with a dissonant-resonant controller for negative-sequence voltage elimination 

    Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Rey Lopez, Juan Manuel; Miret Tomàs, Jaume; Castilla Fernández, Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2020-04-01)
    Article
    Open Access
    The mitigation of the adverse effects of voltage unbalance in equipment and power quality can be performed by the power electronic converters that interface distributed generators to the grid. Inspired in a resonant ...
  • Optimal tuning of the control parameters of an inverter-based microgrid using the methodology of design of experiments 

    Miret Tomàs, Jaume; Balestrassi, Pedro Paulo; Camacho Santiago, Antonio; Guzmán Solà, Ramon; Castilla Fernández, Miguel (2020-10-01)
    Article
    Open Access
    The design of the control system in an inverter-based microgrid is a challenging problem due to the large number of parameters involved. Different optimisation methods based on obtaining an approximated mathematical model ...
  • Renewable energy auction prices: near subsidy-free? 

    Martín Cañadas, María Elena; Coronas Herrero, Sergio; Alonso Travesset, Alexandre; Hoz Casas, Jordi de la; Matas Alcalá, José (2020-07-01)
    Article
    Open Access
    The latest trend of low record bid prices in renewable energy auctions has raised concerns on the effective deployment of the winning projects. A survey of recent auction data from several countries, technologies and ...
  • New sogi-fll grid frequency monitoring with a finite state machine approach for better response in the face of voltage sag and swell faults 

    Abdali Nejad, Sajad; Matas Alcalá, José; Martín Cañadas, María Elena; Hoz Casas, Jordi de la; Al-Turki, Y.A. (2020-04-01)
    Article
    Open Access
    The SOGI-FLL (Second-Order Generalized Integrator–Frequency-Locked Loop) is a well-known and simple adaptive filter that allows for estimating the parameters of grid voltage with a small computational burden. However, the ...
  • Negative-sequence voltage elimination for distributed generators in grid-feeding operation mode 

    Rey López, Juan Manuel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Velasco García, Manel; Martí Colom, Pau; Mojica Nava, Eduardo (2020-07-24)
    Article
    Restricted access - publisher's policy
    A major concern of the power quality in distributed systems is related to the mitigation of voltage imbalances. This function can be implemented directly in the control system of the distributed generation power converters ...
  • A new control strategy for three-phase shunt active power filters based on FIR prediction 

    Kukrer, Osman; Komurcugil, Hasan; Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-07)
    Article
    Restricted access - publisher's policy
    A new discrete-time control strategy for three-phase three-wire shunt active power filters (APF) is presented, based on a mathematical model in the stationary reference frame. It involves a feedback-linearization-type ...
  • 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 ...
  • Aggregated economic analysis of the brazilian electricity distribution companies using a regulated market economic model 

    Cortez, Carolina; Bonatto, Benedito Donizeti; Arango, Héctor; Castilla Fernández, Miguel (Springer, 2020-03-29)
    Article
    Restricted access - publisher's policy
    While most of the research work in the field of electrical engineering was aroused by the scientific challenges to be overcome, it is fair to recognize that the practical importance of engineering hinges on its economic ...
  • A new THD measurement method with small computational burden using a SOGI-FLL grid monitoring system 

    Matas Alcalá, José; Martín Cañadas, María Elena; Hoz Casas, Jordi de la; Abusorrah, A.; Al-Turki, Y.A.; Alshaeikh, Hamed (Institute of Electrical and Electronics Engineers (IEEE), 2020-06-01)
    Article
    Restricted access - publisher's policy
    This article proposes a new method for obtaining the total harmonic distortion (THD) using few math operations, a low-pass filter (LPF), and a grid monitoring system able to provide the fundamental and harmonics components ...
  • A power calculation algorithm for single-phase droop-operated-inverters considering linear and nonlinear loads HIL-assessed 

    El Mariachet Carreño, Jorge; Matas Alcalá, José; Martín Cañadas, María Elena; Li, Mingshen; Guan, Yajuan; Guerrero, Josep M. (2019-11-01)
    Article
    Open Access
    The active and reactive powers, P and Q, are crucial variables in the parallel operation of single-phase inverters using the droop method, introducing proportional droops in the inverter output frequency and voltage amplitude ...
  • Avoiding overvoltage problems in three-phase distributed-generation systems during unbalanced voltage sags 

    Castilla Fernández, Miguel; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis (2020-02-01)
    Article
    Open Access
    During voltage sags, distributed generation systems must fulfil specific grid-code requirements for reactive current injection. This ancillary service can produce overvoltage problems in networks operating in unbalanced ...
  • A novel electricity price forecasting approach based on dimension reduction strategy and rough artificial neural networks 

    Jahangir, Hamidreza; Tayarani, Hanif; Baghali, Sina; Ahmadian, Ali; Elkamel, Ali; Golkar, Masoud Aliakbar; Castilla Fernández, Miguel (2020-04-01)
    Article
    Restricted access - publisher's policy
    An accurate electricity price forecasting (EPF) plays a vital role in the deregulated energy markets and has a specific effect on optimal management of the power system. Considering all the potent factors in determining ...

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