Exploració per autor "Teodorescu, Remus"

Ara es mostren els items 42-61 de 67

    • Medium voltage three-level converters for the grid connection of a multi-MW wind turbine 

      Senturk, Osman S.; Helle, Lars; Munk-Nielsen, Stig; Rodríguez Cortés, Pedro; Teodorescu, Remus (2009)
      Comunicació de congrés
      Accés obert
      Three-level (3L) neutral point clamped (NPC), flying capacitor (FC), and H-bridge (HB) voltage source converters (VSCs) as a grid-side full-scale medium voltage (MV) converter are modeled, controlled, and simulated for ...

    • Microgrid connection management based on an intelligent connection agent 

      Rocabert Delgado, Joan; Azevedo, Gustavo; Candela García, José Ignacio; Teodorescu, Remus; Rodríguez Cortés, Pedro; Etxeberria Otadui, Ion (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Text en actes de congrés
      Accés obert
      The increasing penetration of generation power plants based on renewable energies in the electrical networks has boosted the number of systems connected to the grid. In this scenario the microgrid, providing advanced ...

    • Model predictive current control for high-power grid-connected converters with output LCL filter 

      Miranda, Hernan; Teodorescu, Remus; Rodríguez Cortés, Pedro; Helle, Lars (2009)
      Text en actes de congrés
      Accés obert
      A model predictive control strategy for a highpower, grid connected 3-level neutral clamped point converter is presented. Power losses constraints set a limit on commutation losses so reduced switching frequency is ...

    • Modeling, analysis, and design of stationary reference frame droop controlled parallel three-phase voltage source inverters 

      Vásquez Quintero, Juan Carlos; Guerrero Zapata, Josep Maria; Savaghevi, Mehdi; Teodorescu, Remus (IEEE, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Power electronics based microgrids consist of a number of voltage source inverters (VSIs) operating in parallel. In this paper, the modeling, control design, and stability analysis of three-phase VSIs are derived. The ...

    • Modelling and simulation of VSC-HVDC connection for offshore wind power plants 

      Chaudhary, S. K.; Teodorescu, Remus; Rodríguez Cortés, Pedro; Kjaer, P. C.; Christensen, P.W. (2010)
      Text en actes de congrés
      Accés obert
      Several large offshore wind power plants (WPP) are planned in the seas around Europe. VSC-HVDC is a suitable means of integrating such large and distant offshore WPP which need long submarine cable transmission to the ...

    • Multi-resonant frequency-locked loop for grid synchronization of power converters under distorted grid conditions 

      Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Candela García, José Ignacio; Mujal-Rosas, Ramon Maria; Teodorescu, Remus; Blaabjerg, F. (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-01)
      Article
      Accés obert
      This paper presents a new multiresonant frequencyadaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at ...

    • Multilink DC transmission for offshore wind power integration 

      Craciun, Bogdan-Ionut; da Silva, Rodrigo; Teodorescu, Remus; Rodríguez Cortés, Pedro (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The High Voltage Direct Current (HVDC) system gains much more flexibility on a basis of multi terminal operation. Having extra converters brings also new ideas in sharing the active power and one of the solutions is the ...

    • Multilink DC transmission systems for supergrid future concepts and wind power integration 

      da Silva, Rodrigo; Teodorescu, Remus; Rodríguez Cortés, Pedro (Curran, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A possible methodology for the power sharing is based on DC voltage droop control at onshore station converters. The aim is to present an evaluation tool for the droop control parameter description in support of DC power ...

    • Multiple second order generalized integrators for harmonic synchronization of power converters 

      Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Etxebarría, Ion; Hermoso Costa, Juan Ramón; Teodorescu, Remus (2009)
      Text en actes de congrés
      Accés obert
      This paper presents a new frequency-adaptive synchronization method for grid-connected power converters which allows estimating not only the positive- and negativesequence components of the power signal at the ...

    • Overview of FACTS devices for wind power plants directly connected to the transmission network 

      Adamczyk, A.; Teodorescu, Remus; Mukerjee, R. N.; Rodríguez Cortés, Pedro (2010)
      Text en actes de congrés
      Accés obert
      In this paper state-of-the-art in FACTS for WPPs with AC connection is given. FACTS devices with their properties are described. HVDC, which in literature is also often recognized as FACTS device, is out of this paper ...

    • Overview of recent grid codes for wind power integration 

      Altin, M.; Goksu, O.; Teodorescu, Remus; Rodríguez Cortés, Pedro; Bak-Jensen, Birgitte; Helle, L. (2010)
      Text en actes de congrés
      Accés obert
      As wind power penetration level increases, power system operators are challenged by the penetration impacts to maintain reliability and stability of power system. Therefore, grid codes are being published and continuously ...

    • Overview of the energy storage systems for wind power integration enhancement 

      Swierczynski, M.; Teodorescu, Remus; Rasmunssen, C. N.; Rodríguez Cortés, Pedro; Vikelgaard, H. (2010)
      Text en actes de congrés
      Accés obert
      This paper deals with state of the art of the Energy Storage (ES) technologies and their possibility of accommodation for wind turbines. Overview of ES technologies is done in respect to its suitability for Wind Power ...

    • Parameterization of a synchronous generator to represent a doubly fed induction generator with chopper protection for fault studies 

      Martínez Navarro, Jorge; Kjaer, P. C.; Rodríguez Cortés, Pedro; Teodorescu, Remus (2010-06-28)
      Article
      Accés restringit per política de l'editorial
      This paper addresses the representation of the wound rotor asynchronous generators by an equivalent synchronous generator, valid for short circuit current calculations. Modern wind power plants are required and designed ...

    • Partial shadowing detection based on equivalent thermal voltage monitoring for PV module diagnostics 

      Sera, Dezso; Teodorescu, Remus; Rodríguez Cortés, Pedro (2009)
      Text en actes de congrés
      Accés obert
      Partial shadowing of photovoltaic systems can overproportionally reduce the energy yield and lead to early ageing and failure of the shadowed cells. Large area shadows are relatively easy to detect due to the eminent ...

    • Power capability investigation based on electrothermal models of press-pack IGBT three-level NPC and ANPC VSCs for multimegawatt wind turbines 

      Senturk, Osman S.; Helle, Lars; Rodríguez Cortés, Pedro; Munk-Nielsen, Stig; Teodorescu, Remus (2012-07)
      Article
      Accés restringit per política de l'editorial
      Wind turbine power capability is an essential set of data for both wind turbine manufacturers/operators and transmission system operators since the power capability determines whether a wind turbine is able to fulfill ...

    • Power delivery in multiterminal VSC-HVDC transmission system for offshore wind power applications 

      da Silva, Rodrigo; Teodorescu, Remus; Rodríguez Cortés, Pedro (2010)
      Text en actes de congrés
      Accés obert
      This paper deals with one of the challenges in the field of offshore wind power systems: power transmission among the wind farms and the land when there is more than one AC grid to be considered. This case is known in ...

    • Power density investigation on the press-pack IGBT 3L-HB-VSCs applied to large wind turbines 

      Senturk, Osman S.; Munk-Nielsen, Stig; Teodorescu, Remus; Helle, L.; Rodríguez Cortés, Pedro (IEEE, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      With three different DC-side and AC-side connections, the three-level H-bridge voltage source converters (3L-HB-VSCs) are alternatives to 3L neutral-point-clamped VSCs (3L-NPC-VSCs) for interfacing large wind turbines ...

    • Power electronics for PV power systems integration 

      Teodorescu, Remus; Rodríguez Cortés, Pedro; Liserre, M. (2010)
      Text en actes de congrés
      Accés obert
      Future PV power converters should ensure smart and efficient integration of PV energy into existing electrical networks. To achieve this goal, new essential issues should be addressed by engineers and researchers .

    • Renewable energy operation and conversion schemes: a summary of discussions during the Seminar on Renewable Energy Systems 

      Zacharias, Peter; Teodorescu, Remus; Rodríguez Cortés, Pedro; Liserre, M.; Knapp, Wilfried; Spagnuolo, Giovanni; Petrone, Giovanni; Vasconcelos, Samuel; Carlo Cecati, Araújo; Friis-Madsen, Erik; Gubía, Eugenio; Hissel, Daniel; Jasinski, Marek (2010-03)
      Article
      Accés obert
      A short summary of some speeches given during Seminar on Renewable Energy system (SERENE) is presented. The contributions have been mainly focused on power electronics for photovoltaic (PV) and sea wave energies, pointing ...

    • Safe current injection strategies for a STATCOM under asymmetrical grid faults 

      Rodríguez Cortés, Pedro; Medeiros, G.; Luna Alloza, Álvaro; Cavalcanti, Marcelo C.; Teodorescu, Remus (2010)
      Text en actes de congrés
      Accés obert
      This paper explores different strategies to set the reference current of a STATCOM under unbalanced grid voltage conditions and determines the maximum deliverable reactive power in each case to guarantee the injected ...