Now showing items 1-20 of 98

  • Active and reactive power strategies with peak current limitation for distributed generation inverters during unbalanced grid faults 

    Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Borrell Sanz, Angel; García de Vicuña Muñoz de la Nava, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2015-03-01)
    Article
    Open Access
    Distributed generation inverters have become a key element to improve grid efficiency and reliability, particularly during grid faults. Under these severe perturbations, inverter-based power sources should accomplish ...
  • Active damping based on Ackermann's formula for a three-phase voltage source inverter with LCL filter 

    Guzmán Solà, Ramon; García de Vicuña Muñoz de la Nava, José Luis; Morales López, Javier; Momeneh, Arash; Miret Tomàs, Jaume; Torres Martínez, Javier (2015)
    Conference report
    Restricted access - publisher's policy
    This paper presents an active damping method in natural frame for a three-phase voltage source inverter with LCL filter. The proposed method is based on the pole placement technique via Ackermann's formula. This approach ...
  • 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)
    Conference report
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    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 ...
  • Adaptive slope voltage control for distributed generation inverters with improved transient performance 

    Rey López, Juan Manuel; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Camacho Santiago, Antonio; Guzmán Solà, Ramon (2019-04-09)
    Article
    Restricted access - publisher's policy
    Reactive power injection in distributed generation inverters is an useful ancillary service for grid supporting purposes. For grid-feeding converters, the slope control method is the most common voltage regulation strategy ...
  • A flexible experimental laboratory for distributed generation networks based on power inverters 

    Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Guzmán Solà, Ramon; Camacho Santiago, Antonio; Moradi Ghahderijani, Mohammad (2017-10-13)
    Article
    Open Access
    In the recently deregulated electricity market, distributed generation based on renewable sources is becoming more and more relevant. In this area, two main distributed scenarios are focusing the attention of recent research: ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • Analysis, design and implementation of a DC/DC boost resonant-inductor converter with sliding-mode control 

    Moradi Ghahderijani, Mohammad; Castilla Fernández, Miguel; Momeneh, Arash; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis (2018-03-20)
    Article
    Open Access
    Modern DC-DC resonant converters are normally build around a voltage-source series-resonant converter. This study aims to facilitate the practical use of current-source parallel-resonant converters due to their outstanding ...
  • Analysis, design and implementation of a residential inductive contactless energy transfer system with multiple mobile clamps 

    Momeneh, Arash; Castilla Fernández, Miguel; Moradi Ghahderijani, Mohammad; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis (2017-06-30)
    Article
    Open Access
    This study presents the analysis, design and implementation of a simple and cost-effective residential inductive contactless energy transfer system with multiple mobile clamps. The topology is based on the cascaded connection ...
  • 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, 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 ...
  • Aplicació de tècniques de control no lineal per a convertidors electrònics de potència amb consignes variables en el temps 

    Miret Tomàs, Jaume (Universitat Politècnica de Catalunya, 2005-02-04)
    Doctoral thesis
    Open Access
    El principal objetivo de esta Tesis ha sido establecer nuevas estrategias de control para convertidores de potencia simples y paralelizados, que siguen consignes variables en el tiempo.<br/>En la Tesis Doctoral se propone ...
  • Charging demand of Plug-in Electric Vehicles: Forecasting travel behavior based on a novel Rough Artificial Neural Network approach 

    Jahangir, Hamidreza; Tayarani, Hanif; Ahmadian, Ali; Golkar, Masoud Aliakbar; Miret Tomàs, Jaume; Tayarani, Mohammad; Gao, H. Oliver (2019-08-20)
    Article
    Restricted access - publisher's policy
    The market penetration of Plug-in Electric Vehicles (PEVs) is escalating due to their energy saving and environmental benefits. In order to address PEVs impact on the electric networks, the aggregators need to accurately ...
  • 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 ...
  • 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 ...
  • 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
    Restricted access - publisher's policy
    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 a multiple-output DC/DC current source parallel resonant converter 

    Ghahderijani, Mohammad Moradi; Castilla Fernández, Miguel; Miret Tomàs, Jaume; Guzmán Solà, Ramon; Rey López, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    The aim of this paper is to regulate the output voltages of a multiple-output DC/DC class-D current source parallel resonant converter. To this end, a sliding mode control scheme is presented consisting of an outer voltage ...
  • 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
    Restricted access - publisher's policy
    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)
    Conference report
    Restricted access - publisher's policy
    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 for distribution generation inverters to maximize the voltage support in the lowest phase during voltage sags 

    Camacho Santiago, Antonio; Castilla Fernández, Miguel; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis; Garnica López, Miguel Andrés (Institute of Electrical and Electronics Engineers (IEEE), 2017-08-07)
    Article
    Open Access
    IEEE Voltage sags are considered one of the worst perturbations in power systems. Distributed generation power facilities are allowed to disconnect from the grid during grid faults whenever the voltage is below a certain ...