Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Roldán-Pérez P"'
Stability of power electronic converters connected to power grids is commonly assessed by using the impedance criterion. On the contrary, stability of power grids is typically analysed by using network state-space representation and system eigenvalue
Externí odkaz:
http://arxiv.org/abs/2305.19655
Autor:
Jankovic, Njegos, Roldan-Perez, Javier, Prodanovic, Milan, Suul, Jon Are, D'Arco, Salvatore, Rouco-Rodriguez, Luis
In recent years, transmission system operators have started requesting converter-interfaced generators (CIGs) to participate in grid services such as power oscillation damping (POD). As power systems are prone to topology changes because of connectio
Externí odkaz:
http://arxiv.org/abs/2304.06555
Low-frequency oscillations are an inherent phenomena in transmission networks and renewable energy plants should be configured to damp them. Commonly, a centralised controller is used in PV plants to coordinate PV generators via communication channel
Externí odkaz:
http://arxiv.org/abs/2304.06415
This paper proposes a recursive, virtual admittance based, secondary controller for DG units that improves the voltage profile in distribution networks. First, the adaptation of the virtual admittance concept for the goal of voltage regulation is exp
Externí odkaz:
http://arxiv.org/abs/2210.14859
This paper proposes a taxonomy of power converter control schemes based on the recently proposed concept of complex frequency. This quantity captures local frequency variations due to the change of both the phase angle and amplitude of bus voltages a
Externí odkaz:
http://arxiv.org/abs/2209.11107
Autor:
Patricia Roldán-Pérez, Vanesa Abuín-Porras, Isabel Rodríguez-Costa, María Ortiz-Lucas, Pablo Bellosta-López, Almudena Buesa-Estéllez
Publikováno v:
Children, Vol 11, Iss 10, p 1242 (2024)
Introduction: Specific home tasks and the use of splints seem to positively affect altered structures and functions, as well as the activities and participation, of children with unilateral cerebral palsy (UCP). However, how did families experience t
Externí odkaz:
https://doaj.org/article/9f9c7067d2474818986670f39acf1a42
Autor:
José Luis Piñana, Lourdes Vazquez, Inmaculada Heras, Tommaso Francesco Aiello, Lucia López-Corral, Ignacio Arroyo, Eva Soler-Espejo, Irene García-Cadenas, Valentín Garcia-Gutierrez, Cristina Aroca, Pedro Chorao, María T. Olave, Javier Lopez-Jimenez, Marina Acera Gómez, Elena Arellano, Marian Cuesta-Casas, Alejandro Avendaño-Pita, Clara González-Santillana, José Ángel Hernández-Rivas, Alicia Roldán-Pérez, Mireia Mico-Cerdá, Manuel Guerreiro, Julia Morell, Paula Rodriguez-Galvez, Jorge Labrador, Diana Campos, Ángel Cedillo, Carolina Garcia Vidal, Rodrigo Martino, Carlos Solano
Publikováno v:
Frontiers in Oncology, Vol 14 (2024)
IntroductionScarce real-life data exists for COVID-19 management in hematologic disease (HD) patients in the Omicron era.PurposeTo assess the current clinical management and outcome of SARS-CoV-2 infection diagnosed, identify the risk factors for sev
Externí odkaz:
https://doaj.org/article/c7e1fc043ebf4586b4a5741faa4b32e6
Autor:
Juliana Tobón Ospina, Mayra Alejandra Fuentes Vanegas, Daniela Cuervo Montoya, Samantha Roldán Pérez, Mónica María Durango Zuleta
Publikováno v:
Brazilian Journal of Food Technology, Vol 27 (2024)
Abstract The implementation of effective cleaning and disinfection procedures is crucial to ensure quality control and food safety in food services. This study aimed to evaluate the hygienic conditions in the gastronomy laboratories of a university i
Externí odkaz:
https://doaj.org/article/10f7069601e14cc5807f8b238ddbe3f8
Autor:
Montoya, Francisco Gil, Alcayde, Alfredo, Arrabal-Campos, Francisco, Baños, Raul, Roldán-Pérez, Javier
Traditional power theories and one of their most important concepts --apparent power-- are still a source of debate and, as shown in the literature, they present several flaws that misinterpret the power-transfer phenomena under distorted grid condit
Externí odkaz:
http://arxiv.org/abs/2002.10011
In this paper, the power flow in electrical systems is modelled in the time domain by using Geometric Algebra and the Hilbert Transform. The use of this mathematical framework overcomes some of the limitations shown by the existing methodologies unde
Externí odkaz:
http://arxiv.org/abs/2002.05458