Browsing by Subject "Energia--Emmagatzematge"
Now showing items 1-20 of 33
-
A hybrid energy storage solution based on supercapacitors and batteries for the grid integration of utility scale photovoltaic plants
(Elsevier, 2022-07-01)
Article
Open AccessThis paper presents a 2-level controller managing a hybrid energy storage solution (HESS) for the grid integration of photovoltaic (PV) plants in distribution grids. The HESS is based on the interconnection of a lead-acid ... -
A mathematical model for the energy stored in green roofs
(2023-03-13)
Article
Open AccessA simple mathematical model to estimate the energy stored in a green roof is developed. Analytical solutions are derived corresponding to extensive (shallow) and intensive (deep) substrates. Results are presented for the ... -
A systemic approach to investigate the gaps between distribution system operators need and technology developers’ perception—A case study of an intelligent low-voltage grid management system with storage
(Multidisciplinary Digital Publishing Institute, 2021-06-09)
Article
Open AccessThe purpose of the paper is to introduce a new bi-directional approach to assess the gapbetween the customer needs and technology developers’ perception on the value propositions ofinnovations which includes storages. The ... -
Advanced study for the numerical resolution of the Navier-Stokes equations. Application to thermal energy storage systems
(Universitat Politècnica de Catalunya, 2022-07-19)
Master thesis
Open AccessThe resolution of the Navier Stokes equations in three dimensions in a turbulent regime applying turbulence models is studied. To accomplish this objective, it is done a brief introduction to the work done on the Final ... -
Brookite TiO2 nanorods as promising electrochromic and energy storage materials for smart windows
(2023-01-01)
Article
Open AccessElectrochromic smart windows (ESWs) offer an attractive option for regulating indoor lighting conditions. Electrochromic materials based on ion insertion/desertion mechanisms also present the possibility for energy storage, ... -
Capacitor voltage balancing in a three-level-converter-based energy storage system
(2013-10-01)
Article
Restricted access - publisher's policyThis paper discusses a grid-connected energy storage system based on two three-level (3L) converters: a DC-DC one and a neutral-point-clamped inverter. When compared to a system using standard two-level converters, the ... -
Coherent vorticity extraction in resistive drift-wave turbulence: Comparison of orthogonal wavelets versus proper orthogonal decomposition
(2011-03)
Article
Open AccessWe assess two techniques for extracting coherent vortices out of turbulent flows: the wavelet based Coherent Vorticity Extraction (CVE) and the Proper Orthogonal Decomposition (POD). The former decomposes the flow field ... -
Comparative life cycle assessment of different lithium-ion battery chemistries and lead-acid batteries for grid storage application
(Universitat Politècnica de Catalunya, 2021-11-08)
Master thesis
Restricted access - confidentiality agreement
Covenantee: KTH School of Industrial Engineering and Management -
Competitiveness in power systemfrequency regulation markets
(Universitat Politècnica de Catalunya, 2021-11-08)
Master thesis
Open Access
Covenantee: KTH School of Industrial Engineering and ManagementThe growing share of weather-dependent power generation in the Swedish power system is challenging the stability of the whole system. Therefore, the need to increase system flexibility by frequency regulation reserves is ... -
Control of a flywheel energy storage system for power smoothing in wind power plants
(2014-03-01)
Article
Open AccessThis paper deals with the design and the experimental validation in scale-lab test benches of an energy management algorithm based on feedback control techniques for a flywheel energy storage device. The aim of the flywheel ... -
Control strategies for combining local energy storage with wells turbine oscillating water column devices
(2015-11-01)
Article
Open Access -
Corrosion evaluation of austenitic and duplex stainless steels in molten carbonate salts at 600 °C for thermal energy storage
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-19)
Article
Open AccessNext-generation concentrated solar power (CSP) plants are required to operate at temperatures as high as possible to reach a better energy efficiency. This means significant challenges for the construction materials in ... -
Design and calculations of a thermal solar installation in a studenthall
(2007-07)
Master thesis (pre-Bologna period)
Restricted access - author's decision
Covenantee: Hochschule Aalen -
Development of Digital Twins in an industry
(Universitat Politècnica de Catalunya, 2022-09-19)
Master thesis
Open AccessThis Master Thesis consists in the development process of a digital twin of an industry. The digital twin includes the model of the main assets of an industry, such as batteries, converters, photovoltaic generation, and ... -
Duplex stainless steels for thermal energy storage: characterization of oxide scales formed in carbonate salts at 500 °C
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-15)
Article
Open AccessNext generation concentrated solar power (CSP) plants promise a higher operating temperature and better efficiency. However, new issues related to the corrosion against protection of the construction alloys need to be ... -
Emmagatzematge energètic a nivell d’usuari: estudi de viabilitat de l'ús d'emmagatzematge energètic a nivell d'usuari.
(Universitat Politècnica de Catalunya, 2015-10-30)
Bachelor thesis
Restricted access - author's decision -
Entropy generation model to estimate battery ageing
(Elsevier, 2020-12)
Article
Open AccessDetermining battery ageing is a key issue in predicting the available charge in battery-operated systems. Beyond the common use of voltage or current measurements, which have proved unsuccessful as general methods, we aim ... -
Estudio sobre control de microrredes eléctricas con almacenamiento de energía
(Universitat Politècnica de Catalunya, 2022-10-14)
Bachelor thesis
Restricted access - author's decisionLa transición energética hacia un modelo en el que la producción, la distribución y el consumo energético adquieran un carácter sostenible que participe en la descarbonización de la sociedad, es una tarea colosal. Si bien ... -
Estudio técnico y de mercado de Wiser Energy Center
(Universitat Politècnica de Catalunya, 2021-07-06)
Bachelor thesis
Open Access
Covenantee: Schneider Electric España S.A.UAquest projecte inclou l’estudi tècnic i de mercat previ al llançament de la solució Wiser Energy Center, de Schneider Electric, a Espanya. Conjuntament, s’ha realitzat una eina de càlcul pel dimensionat de l’ecosistema ... -
Free-standing, flexible nanofeatured polymeric films prepared by spin-coating and anodic polymerization as electrodes for supercapacitors
(2021-07-02)
Article
Open AccessFlexible and self-standing multilayered films made of nanoperforated poly(lactic acid) (PLA) layers separated by anodically polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) conducting layers have been prepared and used ...