Exploració per autor "Teodorescu, Remus"
Ara es mostren els items 39-58 de 67
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Lifetime investigations of a lithium iron phosphate (LFP) battery system connected to a wind turbine for forecast improvement and output power gradient reduction
Swierczynski, M.; Teodorescu, Remus; Rodríguez Cortés, Pedro (2011)
Text en actes de congrés
Accés obertLithium Ion batteries and especially Lithium Iron Phosphate (LFP) batteries can be characterized by high power densities, relatively long life-time, no maintenance and a lot of research currently being done on increasing ... -
Lithium ion batteries ageing analysis when used in a PV power plant
Beltran, H.; Swierczynski, M.; Aparicio, N.; Belenguer, E.; Teodorescu, Remus; Rodríguez Cortés, Pedro (2012)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper analyzes the integration of lithium ion (Li-ion) batteries into large scale grid-connected PV plants. It performs a systematic analysis on both the operation improvement obtained by a PV+ES power plant and the ... -
Local reactive power control methods for overvoltage prevention of distributed solar inverters in low-voltage grids
Demirok, Erhan; Casado Gonzalez, P.; Frederiksen, K.H.B.; Sera, Dezso; Rodríguez Cortés, Pedro; Teodorescu, Remus (2011-12-27)
Article
Accés restringit per política de l'editorialThe main objective of this study is to increase the penetration level of photovoltaic (PV) power production in low-voltage (LV) grids by means of solar inverters with reactive power control capability. This paper ... -
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 obertThree-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 obertThe 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 obertA 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'editorialPower 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 obertSeveral 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 obertThis 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'editorialThe 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'editorialA 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 obertThis 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 obertIn 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 obertAs 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 obertThis 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'editorialThis 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)
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Accés obertPartial 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'editorialWind 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 obertThis 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'editorialWith 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 ...