Universitat Politècnica de Catalunya
Ara mostrant els elements 108-127 de 156
The increasing integration of renewable energy installations at the distribution grid level has led to a strong increase in grid reinforcement measures in recent years. Since the costs are being passed on to the general ...
This thesis focuses on the operation and control of Large Scale Photovoltaic Power Plants (LS-PVPPs) according to grid code requirements with a special focus on the basic unit: the PV generator. The aim of this thesis is ...
In the context of distributed generation growth, local grids could face operational issues. In that sense, smart grid deployment will give information to local grid operators about grid status at medium and low voltage ...
(English) Nowadays, lightning presents a challenge to the proper functioning of an increasingly complex electrical system. One of the most sensitive and exposed to lightning elements are wind turbines. Due to their height ...
(English) Climate change is pushing to decarbonize worldwide economies and forcing fossil fuel-based power systems to evolve into power systems based mainly on renewable energies sources (RES). Thus, increasing the energy ...
The main aim of this thesis is investigating energy sustainability in developing countries using useful indicators. As it is known, serious issues such as global warming and inefficient consumption of energy will lead to ...
In lightning protection techniques a basic aspect is the identification of the impact point possible, which is determined by the evolution of the initial phase of the lightning, known as the stepped leader, the ground ...
(English) The main objective of this thesis is to develop and validate simple but sufficiently accurate mathematical models for single-phase and three-phase transformers, by estimating their parameters from simple laboratory ...
Nowadays, many industries are moving towards more electrical systems and components. This is done with the purpose of enhancing the efficiency of their systems while being environmentally friendlier and sustainable. ...
L'actual situació energètica demanda cada cop més d'aplicacions que redueixin el consum energètic. A nivell d'energia elèctrica, i de la conversió d'aquesta a energia mecànica, els nivells d'eficiència energètica són força ...
El desarrollo informático en los últimos años ha posibilitado la utilización de computadoras para simular el comportamiento de los componentes de una red eléctrica, a través de la utilización de modelos matemáticos. Los ...
El presente documento es la tesis doctoral de Alfredo de Blas del Hoyo, dirigida por el Dr.Ing. Ramón Bargalló Perpiñá, realizada en el marco del programa de doctorado de Ingeniería Electromecánica del Departamento de ...
A detail modelling of railway electrical system with energy storages devices is developed in this thesis in order to analyze most of the implemented railway electrical system. The modelling has been realized from a point ...
The proposals for large-scale deployment of renewable energy sources is leading to the need for more cross-border interconnections creating a pan-European power system, at the EU level. Such interconnections may take ...
This thesis discusses the operation of the grid-tied modular multilevel converters (MMC) applied on the dc power transmission, particularly on the medium and high-voltage applications. First, it is presented the evolution ...
The present Ph.D. thesis has been developed following an Industrial Ph.D. program and verses on developing a commercial piece of equipment for teknoCEA, a spin-off company from CITCEA-UPC. The thesis is centered on developing ...
El objeto de este trabajo pasaba por obtener un motor con un alto par de arranque pero con intensidades limitadas, con variaciones de la intensidad en función de la carga prácticamente inapreciables aunque con pérdidas en ...
This Ph.D. thesis illustrates a novel study on the analytical and numerical design optimization of radial-flux permanent magnet synchronous wind generators (PMSGs) for small power generation in an urban area, in which an ...
The present dissertation is focused on the energy optimization of systems which contain multiple energy carriers. The objective of the research is the development of a methodology and the corresponding software tools, which ...
In recent years, there have been considerable efforts in the design and development of technologies and techniques for more efficient harvesting of renewable energy resources to meet the ever increasing electric power ...
