Now showing items 1-16 of 16

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      A Real-Time Sliding Mode Control for a Wind Energy System Based on a Doubly Fed Induction Generator 

      Barambones Caramazana, Oscar ORCID; Cortajarena Echeverria, José Antonio ORCID; Alkorta Egiguren, Patxi; González de Durana García, José María (MDPI, 2014-10)
      In this paper, a real time sliding mode control scheme for a variable speed wind turbine that incorporates a doubly feed induction generator is described. In this design, the so-called vector control theory is applied, in ...
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      An Algebraic Preservation Theorem for Aleph-Zero Categorical Quantified Constraint Satisfaction 

      Chen, Hubert; Müller, Moritz (Logical Methods in Computer Science c/o Institut f. Theoretische Informatik, Technische Universität Braunschweig, 2013-03-29)
      We prove an algebraic preservation theorem for positive Horn definability in aleph-zero categorical structures. In particular, we define and study a construction which we call the periodic power of a structure, and define ...
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      Analysis of the Channel Influence to Power Line Communications Based on ITU-T G.9904 (PRIME) 

      Llano, Asier; Angulo Pita, Itziar ORCID; Angueira Buceta, Pablo ORCID; Arzuaga, Txetxu; De la Vega Moreno, David ORCID (MDPI, 2016-01)
      ITU-T G.9904 standard, also known as PoweRline Intelligent Metering Evolution (PRIME), is a Power Line Communications standard for advanced metering, grid control and asset monitoring defined by the International ...
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      Beyond Q-Resolution and Prenex Form: a Proof System for Quantified Constraint Satisfaction 

      Chen, Hubert Ming (Technische Universität Braunschweig, Institute of Theoretical Computer Science, 2014)
      We consider the quanti fied constraint satisfaction problem (QCSP) which is to decide, given a structure and a first-order sentence (not assumed here to be in prenex form) built from conjunction and quanti fication, whether ...
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      Design, Construction and Testing of a Hydraulic Power Take-Off for Wave Energy Converters 

      Lasa, Joseba; Antolín Urbaneja, Juan Carlos; Angulo Duque, Carlos ORCID; Estensoro, Patxi; Santos, Maider; Ricci, Pierpaolo (MDPI, 2012-06)
      This paper presents the construction, mathematical modeling and testing of a scaled universal hydraulic Power Take-Off (PTO) device for Wave Energy Converters (WECs). A specific prototype and test bench were designed and ...
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      Enhanced Operation of Electricity Distribution Grids Through Smart Metering PLC Network Monitoring, Analysis and Grid Conditioning 

      Sendin, Alberto; Berganza, Iñigo; Arzuaga, Aitor; Osorio, Xabier; Urrutia, Iker; Angueira Buceta, Pablo ORCID (MDPI, 2013-01)
      Low Voltage (LV) electricity distribution grid operations can be improved through a combination of new smart metering systems' capabilities based on real time Power Line Communications (PLC) and LV grid topology mapping. ...
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      Gain Scheduling Control of an Islanded Microgrid Voltage 

      Camblong Ruiz, Aritza ORCID; Etxeberria Urkia, Aitor; Ugartemendia de la Iglesia, Juan José ORCID; Curea, Octavian (MDPI, 2014-07)
      The aim of this research study has been to design a gain scheduling (GS) digital controller in order to control the voltage of an islanded microgrid in the presence of fast varying loads (FVLs), and to compare it to a ...
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      Mitigation Techniques to Reduce the Impact of Wind Turbines on Radar Services 

      De la Vega Moreno, David ORCID; Matthews, James C. G.; Norin, Lars; Angulo Pita, Itziar ORCID (MDPI, 2013-06)
      Radar services are occasionally affected by wind farms. This paper presents a comprehensive description of the effects that a wind farm may cause on the different radar services, and it compiles a review of the recent ...
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      Modeling Innovative Power Take-Off Based on Double-Acting Hydraulic Cylinders Array for Wave Energy Conversion 

      Antolín, Juan Carlos; Cortes, Alain; Cabanes Axpe, Itziar; Estensoro, Patxi; Lasa, Joseba; Marcos Muñoz, Margarita (MDPI, 2015-03)
      One of the key systems of a Wave Energy Converter for extraction of wave energy is the Power Take-Off (PTO) device. This device transforms the mechanical energy of a moving body into electrical energy. This paper describes ...
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      Pitch Based Wind Turbine Intelligent Speed Setpoint Adjustment Algorithms 

      González-González, Asier; Etxeberria Agiriano, Ismael ORCID; Zulueta Guerrero, Ekaitz; Oterino Echavarri, Fernando ORCID; López Guede, José Manuel (MDPI, 2014-06)
      This work is aimed at optimizing the wind turbine rotor speed setpoint algorithm. Several intelligent adjustment strategies have been investigated in order to improve a reward function that takes into account the power ...
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      Simulación de sistemas Multi-Agente mediante un esquema Monte Carlo basado en ecuaciones diferenciales ordinarias 

      Zulueta Guerrero, Ekaitz; González González, Asier; López Guede, José Manuel; Calvo Gordillo, Isidro ORCID (Elsevier, 2011-07)
      [ES] En este trabajo se expone una metodología para modelar un sistema Multi-Agente (SMA), para que sea equivalente a un sistema de Ecuaciones Diferenciales Ordinarias (EDO), mediante un esquema basado en el método de Monte ...
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      Sliding Mode Control Strategy for Wind Turbine Power Maximization 

      Barambones Caramazana, Oscar ORCID (MDPI, 2012-07)
      The efficiency of the wind power conversions systems can be greatly improved using an appropriate control algorithm. In this work, a sliding mode control for variable speed wind turbine that incorporates a doubly fed ...
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      Strategies for Power Line Communications Smart Metering Network Deployment 

      Sendin, Alberto; Peña Valverde, Ivan ORCID; Angueira Buceta, Pablo ORCID (MDPI, 2014-04)
      Smart Grids are becoming a reality all over the world. Nowadays, the research efforts for the introduction and deployment of these grids are mainly focused on the development of the field of Smart Metering. This emerging ...
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      The Economics of Gasification: A Market-Based Approach 

      Abadie, Luis María; Chamorro Gómez, José Manuel ORCID (MDPI, 2009-09)
      This paper deals with the economics of gasification facilities in general and IGCC power plants in particular. Regarding the prospects of these systems, passing the technological test is one thing, passing the economic ...
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      Valuing Expansions of the Electricity Transmission Network under Uncertainty: The Binodal Case 

      Abadie, Luis María; Chamorro Gómez, José Manuel ORCID (MDPI, 2011-10)
      Transmission investments are currently needed to meet an increasing electricity demand, to address security of supply concerns, and to reach carbon-emissions targets. A key issue when assessing the benefits from an expanded ...
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      Virtual Reconstruction of the Ancient State of a Ruined Church 

      Gkintzou, Christina; Georgopoulos, Andreas; Valle Melón, José Manuel ORCID; Rodriguez-Miranda, Alvaro (Springer Berlin Heidelberg, 2012-11)
      [EN] Three dimensional virtual models can represent both the existing and the already destroyed architectural heritage. This project deals with the 3D reconstruction and representation of the church of San Prudencio's ...