Ara es mostren els items 1-20 de 42

    • A coordinated voltage regulation algorithm of a power distribution grid with multiple photovoltaic distributed generators based on active power curtailment and on-line tap changer 

      Maataoui, Yassir; Chekenbah, Hamid; Boutfarjoute, Omar; Puig Cayuela, Vicenç; Lasri, Rafik (2023-07-01)
      Article
      Accés obert
      The aim of this research is to manage the voltage of an active distribution grid with a low X/R ratio and multiple Photovoltaic Distributed Generators (PVDGs) operating under varying conditions. This is achieved by providing ...
    • A Demo of FPGA Aggressive Voltage Downscaling: Power and Reliability Tradeoffs 

      Salami, Behzad; Unsal, Osman Sabri; Cristal Kestelman, Adrián (IEEE, 2018-12-06)
      Comunicació de congrés
      Accés obert
      The power consumption of digital circuits, e.g., Field Programmable Gate Arrays (FPGAs), is directly related to their operating supply voltages. On the other hand, usually, chip vendors introduce a conservative voltage ...
    • 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), 2021-08-07)
      Article
      Accés obert
      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 ...
    • Active transformer functionalities including an energy storage system 

      Vidal León Romay, José David; Tarraso Martínez, Andrés; Candela, Jose Ignacio; Rodriguez, Pedro (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper presents a series converter in an application with a Custom Power Active Transformer (CPAT) which is a power electronics integrated transformer providing services to the grid and load. The active transformer ...
    • An optimal tracking power sharing controller for inverter-based generators in grid-connected mode 

      Patarroyo Montenegro, Juan; Castellà Rodil, Marc; Andrade Rengifo, Fabio; Kampouropoulos, Konstantinos; Romeral Martínez, José Luis; Vasquez-Plaza, Jesus D. (2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work, an optimal power sharing controller for a three-phase Inverter-based Generator (IG) in a synchronous d-q reference frame is presented. The optimization of this controller is computed using a Linear-Quadratic ...
    • Analysis of reactive power strategies in HVDC-connected wind power plant clusters 

      Schönleber, Kevin; Ratés Palau, Sergi; Gomis Bellmunt, Oriol (2017-12)
      Article
      Accés obert
      © 2017 John Wiley & Sons, Ltd. Offshore wind power plants (WPPs) built near each other but far from shore usually connect to the main grid by a common high-voltage DC (HVDC) transmission system. In the resulting decoupled ...
    • Block disabling characterization and improvements in CMPs operating at ultra-low voltages 

      Ferrerón, Alexandra; Suárez Gracia, Darío; Alastruey, Jesús; Monreal Arnal, Teresa; Viñals Yufera, Víctor (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés obert
      Power density has become the limiting factor in technology scaling as power budget restricts the amount of hardware that can be active at the same time. Reducing supply voltage to ultra-low voltage ranges close to the ...
    • Complex pole placement control for a three-phase voltage source converter 

      Serra, Federico; Dòria Cerezo, Arnau; De Angelo, Cristian; Martín Fernández, L.L.; Bodson, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés obert
      In this work, a complex-valued controller for a three-phase VSC with an LC output filter is proposed. The system is first transformed into its complex representation with the consequent order reduction and simpler analysis. ...
    • Comprehensive Evaluation of Supply Voltage Underscaling in FPGA on-Chip Memories 

      Salami, Behzad; Unsal, Osman S.; Cristal Kestelman, Adrián (IEEE, 2018-12-13)
      Comunicació de congrés
      Accés obert
      In this work, we evaluate aggressive undervolting, i.e., voltage scaling below the nominal level to reduce the energy consumption of Field Programmable Gate Arrays (FPGAs). Usually, voltage guardbands are added by chip ...
    • Control of a three-phase active transformer integrating energy storage 

      Vidal León Romay, José David; Tarraso Martínez, Andrés; Candela García, José Ignacio; Rocabert Delgado, Joan; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2023-06-12)
      Article
      Accés obert
      The high penetration of distributed energy sources is changing the paradigm of electrical networks control and management. Nowadays, power conversion systems associated to green energy plants are not only required to deliver ...
    • Dc voltage droop control design for mmc-based multiterminal hvdc grids 

      Dadjo Tavakoli, Saman; Sánchez Sánchez, Enric; Prieto Araujo, Eduardo; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-20)
      Article
      Accés obert
      This article addresses the design of the DC voltage droop control in modular multilevel converter (MMC)-based multiterminal HVDC grids. First, two energy-based control approaches, namely classic and cross control, are ...
    • Decentralized Robust Frequency Regulation of Multi-terminal HVDC-linked Grids 

      Kim, Jun Soo; Park, Jae Young; Kim, Young-Jin; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2022-01-01)
      Article
      Accés obert
      This paper proposes a new strategy for optimal grid frequency regulation (FR) in an interconnected power system where regional ac grids and an offshore wind farm are linked via a multi-terminal high voltage direct-current ...
    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...
    • Experimental implementation of a voltage control for a Multiterminal VSC-HVDC offshore transmission system 

      Egea Àlvarez, Agustí; Bianchi, Fernando Daniel; Junyent Ferré, Adrià; Gross, Gabriel Igor; Gomis Bellmunt, Oriol (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
    • Fixed Switching Period Discrete-Time Sliding Mode Current Control of a PMSM 

      Repecho del Corral, Víctor; Biel Solé, Domingo; Arias Pujol, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2017-08-25)
      Article
      Accés obert
      A fixed switching period sliding mode control (SMC) for Permanent Magnet Synchronous Machines (PMSMs) is presented. The aim of the paper is to design a SMC that improves the traditional PI based Field Oriented Control (FOC) ...
    • Generalized multivariable grid-forming control design for power converters 

      Chen, Meng; Zhou, Dao; Tayyebi, Ali; Prieto Araujo, Eduardo; Dörfler, Florian; Blaabjerg, Frede (2022-03-22)
      Article
      Accés obert
      The grid-forming converter is an important unit in the future power system with more inverter-interfaced generators. However, improving its performance is still a key challenge. This paper proposes a generalized architecture ...
    • Grid synchronization of renewable generation systems using synchronous power controllers 

      Remón Rodríguez, Daniel; Zhang, Weiyi; Luna Alloza, Álvaro; Candela García, José Ignacio; Rodríguez Cortés, Pedro (2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The increasing penetration of renewable energy sources in power systems has increased the amount of generating units employing power electronics as their grid interface, instead of synchronous generators. Their different ...
    • Grid-forming loads: can the loads be in charge of forming the grid in modern power systems? 

      Gomis Bellmunt, Oriol; Dadjo Tavakoli, Saman; Albernaz Lacerda Freitas, Vinícius; Prieto Araujo, Eduardo (2022-08-29)
      Article
      Accés obert
      Modern power systems are facing the tremendous challenge of integrating vast amounts of variable (non-dispatchable) renewable generation capacity, such as solar photovoltaic or wind power. In this context, the required ...
    • Hierarchical power control of multiterminal HVDC grids 

      Egea Àlvarez, Agustí; Beerten, Jef; Van Hertem, Dirk; Gomis Bellmunt, Oriol (2015-04-01)
      Article
      Accés obert
      This article introduces a hierarchical power control structure for Multi-terminal High Voltage Direct Current (MT-HVDC) systems. The presented hierarchy is similar to the control structure used in classical AC transmission ...
    • LDO–assisted vs. linear–assisted DC/DC converters: a comprehensive study and comparison 

      Shirmohammadli, V.; Saberkari, Alireza; Martínez García, Herminio; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper deals with a comprehensive study and comparison on the conventional linear-assisted converter and a new structure named, LDO-assisted converter based on a new class-AB LDO regulator instead of the conventional ...