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764-tik 121-130 emaitza erakusten
Equivalence of primary control strategies for AC and DC microgrids
(MDPI, 2017)
Microgrid frequency and voltage regulation is a challenging task, as classical generators with rotational inertia are usually replaced by converter-interfaced systems that inherently do not provide any inertial response. ...
On the accurate characterization of the drawbead up-lift forces
(IOP Publishing Ltd., 2018)
The competitiveness of the automotive sector has led to a high demand of accuracy and reduction in lead-time of the deep drawing tool making process. In that regard, the numerical simulation of the deep drawing process has ...
Drawbead uplift force analytical model for deep drawing operations
(IOP Publishing Ltd., 2018)
Drawbead uplift force calculation has been an open issue among the deep drawing tool maker and software developers in the last years. Starting from the original work of Stoughton (1988) many have been the models presented ...
Influencia del agua de mar en el comportamiento frente a impacto de baja energía de un nuevo laminado de resina natural reforzada con fibra de fique colombianoInfluence of seawater immersion in low energy impact behavior of a novel colombian fique fiber reinforced bio-resin laminate
(Universidad Nacional de Colombia, 2015)
This experimental work is aimed at the influence of seawater immersion in low impact energy behavior of a novel Colombian fique fiber reinforced bio-resin laminate. Such material was manufactured by vacuum infusion. The ...
Three stage maturity model in SME's towards Industry 4.0
(Universitat Politecnica de Catalunya, 2016)
Purpose: To address the challenges regarding the concept of Industry 4.0 and the diversification methodology and based on the strategic guidance towards Industry 4.0, we propose a process model as a guiding framework for ...
Control of PWM rectifier under grid voltage dips
(PAN, 2009)
This paper investigates control structure for grid connected three-phase two-level Voltage Source Converter (VSC) under distorted grid voltage conditions. Grid voltage is distorted by balanced and unbalanced voltage dips ...
Experimental uncertainty decompositions of aerodynamic coefficients affected by operative condition variations
(Elsevier Ltd., 2020)
A twofold analysis is performed on an experimental set-up comprising a low-Reynolds wind tunnel, with the aim of quantifying the effect of measurand uncertainties and operative condition variations in the lift and drag ...
On the impact of long-term wave trends on the geometry optimisation of oscillating water column wave energy converters
(Elsevier Ltd., 2020)
Wave trends have been shown to be relevant to energy generation in various areas of the world. Accordingly, this article describes the impact of wave trends on the design of oscillating water column wave energy converters. ...
Instrumentos de rendición de cuentas externos a los medios los casos de Andalucía y la CAPV
(Universidad Complutense de Madrid, 2019)
Este artículo analiza los instrumentos de rendición de cuentas externos a los medios en Andalucía y la Comunidad Autónoma del País Vasco (CAPV), que serían los siguientes: asociaciones de espectadores; colegios, sindicatos ...