Ara es mostren els items 1-20 de 23

  • Active damping control for a three phase grid-connected inverter using sliding mode control 

    Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Camacho Santiago, Antonio; Matas Alcalá, José; Castilla Fernández, Miguel; Miret Tomàs, Jaume (2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper proposes a ne w active damping method based on virtual resistors for three-phase grid connected voltage source inverters (VSI) with LCL filter. The use of this filters is a standard solution to provide the ...
  • A family of gradient descent grid frequency estimators for the SOGI filter 

    Matas Alcalá, José; Martín Cañadas, María Elena; Hoz Casas, Jordi de la; Abusorrah, A.; Al-Turki, Y.A.; Al-Hindawi, M. (2017-09-04)
    Article
    Accés restringit per política de l'editorial
    This paper applies the adaptive gradient descent method to the second-order generalized integrator (SOGI) filter in order to find an online estimation algorithm for the grid frequency, which leads to the proposal of three ...
  • An adaptive prefiltering method to improve the speed/accuracy tradeoff of voltage sequence detection methods under adverse grid conditions 

    Matas Alcalá, José; Castilla Fernández, Miguel; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Guzmán Solà, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2013-07-23)
    Article
    Accés restringit per política de l'editorial
    This paper deals with the improvement of the transient response and harmonic, subharmonic, and dc-offset voltage rejection capability of a grid voltage sequence detection scheme based on a second-order generalized integrator ...
  • A new LPF-based grid frequency estimation for the SOGI filter with improved harmonic rejection 

    Matas Alcalá, José; Martín Cañadas, María Elena; El Mariachet Carreño, Jordi; Abusorrah, A.; Al-Turki, Y.A. (2018)
    Comunicació de congrés
    Accés obert
    This paper proposes a new method for the estimation of the grid voltage frequency using a low-pass filter (LPF) approach. The estimated frequency is used to tune a second order generalized integrator (SOGI) filter commonly ...
  • Assessing the 2014 retroactive regulatory framework applied to the concentrating solar power systems in Spain 

    Hoz Casas, Jordi de la; Martín Cañadas, María Elena; Montalà Palau, Montserrat; Matas Alcalá, José; Guzmán Solà, Ramon (2018-02-15)
    Article
    Accés obert
    The RD 413/2014 new economic and regulatory framework applied to the concentrating solar power plants (CSPP) in Spain has been here analysed and its new remuneration scheme has been formulated, becoming evident its high ...
  • Control design for multiphase synchronous buck converters based on exact constant resistive output impedance 

    Borrell Sanz, Angel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Matas Alcalá, José; García de Vicuña Muñoz de la Nava, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2013-11)
    Article
    Accés restringit per política de l'editorial
    This paper describes a control design methodology based on output impedance analysis for multiphase synchronous buck converters. This design leads to an optimal output voltage transient response. Two design alternatives ...
  • Control scheme for photovoltaic three-phase inverters to minimize peak currents during unbalanced grid-voltage sags 

    Miret Tomàs, Jaume; Castilla Fernández, Miguel; Camacho Santiago, Antonio; García de Vicuña Muñoz de la Nava, José Luis; Matas Alcalá, José (2012)
    Article
    Accés restringit per política de l'editorial
    Nowadays, the majority of the photovoltaic (PV) power sources are connected to the public grid. One of the main connection problems occurs when voltage sags appear in the grid due to short circuits, lightning, etc. ...
  • Control strategies based on effective power factor for distributed generation power plants during unbalanced grid voltage 

    Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Matas Alcalá, José; Guzmán Solà, Ramon; de Sousa Pérez, Óscar; Martí Colom, Pau; García de Vicuña Muñoz de la Nava, José Luis (2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Unbalanced voltages in three-phase power systems is a common perturbation propagated along the grid. Distributed Generation plants have gained widespread attention due to their capability to improve power quality in a ...
  • Control strategy to maximize the power capability of PV three-phase inverters during voltage sags 

    Sosa, Jorge Luis; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Matas Alcalá, José; Al-Turki, Y.A. (2016-04-01)
    Article
    Accés obert
    Under voltage sags, grid-tied photovoltaic inverters should remain connected to the grid according to low-voltage ride-through requirements. During such perturbations, it is interesting to exploit completely the distributed ...
  • Coordinated reactive power control for static synchronous compensators under unbalanced voltage sags 

    Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Matas Alcalá, José; Alarcón Gallo, Eduardo; García de Vicuña Muñoz de la Nava, José Luis (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Unbalanced voltage sags strongly deteriorate the performance of power converters and electrical machines connected to the distribution network. In particular, a reduction of the power quality is noticed in these equipments, ...
  • Design and analysis of the droop control method for parallel inverters considering the impact of the complex impedance on the power sharing 

    Yao, W.; Chen, Min; Matas Alcalá, José; Guerrero Zapata, Josep Maria; Qian, Z.-M. (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-02)
    Article
    Accés restringit per política de l'editorial
    This paper investigates the characteristics of the active and reactive power sharing in a parallel inverters system under different system impedance conditions. The analyses conclude that the conventional droop method ...
  • Design of an analog quasi-steady-state nonlinear current-mode controller for single-phase active power filter 

    Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Castilla Fernández, Miguel; Matas Alcalá, José; Guerrero Zapata, Josep Maria (2009-12)
    Article
    Accés obert
    The injection of sinusoidal current to an electrical grid is nowadays possible with the use of active power filters (APFs).With quasi-steady-state (QSS) nonlinear controllers, these power filters provide low ...
  • Fast grid synchronization technique based on a multiple cascaded general integrator scheme for distributed generation inverters 

    Matas Alcalá, José; Castilla Fernández, Miguel; García de Vicuña Muñoz de la Nava, José Luis; Miret Tomàs, Jaume; Alarcón Gallo, Eduardo; Camacho Santiago, Antonio (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper proposes a new structure for grid synchronization based on generalized integrators (GI) that lead to fast detection of positive and negative components of the grid voltage. The GI are used as a band pass ...
  • Grid-fault control scheme for three-phase photovoltaic inverters with adjustable power quality characteristics 

    Castilla Fernández, Miguel; Miret Tomàs, Jaume; Sosa Avendaño, Jorge Luis; Matas Alcalá, José; García de Vicuña Muñoz de la Nava, José Luis (2010-12-23)
    Article
    Accés restringit per política de l'editorial
    The power quality of a three-phase photovoltaic (PV) inverter drastically deteriorates in the presence of grid faults with unbalanced voltages.Aripple in the injected power and an increase in the current harmonic ...
  • Microcontroladores MCS-51 y MCS-251 

    Matas Alcalá, José; Ramos Lara, Rafael Ramón (Edicions UPC, 2001)
    Llibre
    Accés restringit a la comunitat UPC
    La importancia actual de los sistemas basados en microcontroladores es tal que en realidad están presentes en buena parte de los sistemas electrónicos de aplicación industrial y doméstica, como por ejemplo en el ratón de ...
  • Power calculation algorithm for single-phase droop-operated inverters considering nonlinear loads 

    El Mariachet Carreño, Jorge; Matas Alcalá, José; Martín Cañadas, María Elena; Abusorrah, A. (2018)
    Comunicació de congrés
    Accés obert
    The average active and reactive powers, Pav and Qav, are crucial parameters that have to be calculated when sharing common loads between parallelized droop-operated single-phase inverters. However, low-pass filters (LPF) ...
  • Power calculation algorithm for single-phase droop-operated inverters considering nonlinear loads and unsing n-order SOGI filtering 

    El Mariachet Carreño, Jorge; Matas Alcalá, José; Hoz Casas, Jordi de la; Al-Turki, Y.A. (2018)
    Comunicació de congrés
    Accés obert
    The average active and reactive powers, P and Q, are crucial parameters that have to be calculated when sharing common loads between parallelized droop-operated single-phase inverters. However, the droop method algorithm ...
  • Reduction of Current Harmonic Distortion in Three-Phase Grid-Connected Photovoltaic Inverters via Resonant Current Control 

    Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Matas Alcalá, José; García de Vicuña Muñoz de la Nava, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2013-04)
    Article
    Accés obert
    The resonant current control has been extensively employed to reduce the current harmonic distortion in a wide range of grid-connected distributed generation applications, including photovoltaic (PV) inverters, wind and ...
  • Selective harmonic-compensation control for single-phase active power filter with high harmonic rejection 

    Miret Tomàs, Jaume; Castilla Fernández, Miguel; Matas Alcalá, José; Guerrero Zapata, Josep Maria; Vásquez Quintero, Juan Carlos (2009-08-11)
    Article
    Accés obert
    This paper presents a linear current control scheme for single-phase active power filters. The approach is based on an outer voltage loop, an inner current loop, and a resonant selective harmonic compensator. The design ...
  • Simple low-cost hysteretic controller for multiphase synchronous buck converters 

    Borrell, Angel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Matas Alcalá, José; García de Vicuña Muñoz de la Nava, José Luis (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-06)
    Article
    Accés restringit per política de l'editorial
    This paper presents a novel hysteretic controller for a multiphase synchronous buck converter supplying low voltage, high current, and high slew-rate loads. The control scheme implements the main control functions for ...