Departament d'Enginyeria Elèctrica: Enviaments recents
Ara mostrant els elements 1-20 de 165
Stability analysis of modern power systems
(English) The massive installation of converter-based resources, such as wind and solar photovoltaic power plants and High Voltage Direct Current (HVDC) systems, is resulting in a profound transformation of power systems ...
Aportaciones a la caracterización de las emisiones ópticas producidas por rayos y su detección desde el espacio
(Castellà) Este trabajo de investigación se centra en la caracterización de las emisiones ópticas generadas por diversos procesos de rayos, con el objetivo de mejorar la interpretación de las detecciones ópticas realizadas ...
New approach of power calculation for droop-controlled inverters supplying nonlinear loads
(English) This thesis framework is that of the control of single-phase inverters in alternate current (AC) microgrids. In this context, voltage sourced inverters present difficulties in coping with power quality issues ...
Comportamiento eléctrico de los compuestos de carbono (CFRP): implicaciones para el modelado y fabricación de palas de aerogenerador con elementos estructurales que incorporan compuestos de CFRP
(English) Carbon fiber reinforced composites (CFRP) have been introduced in a very significant way in all areas of industry and the wind energy sector has been no exception. Due to the size of today's wind turbines and the ...
Advanced data-driven fault diagnosis schemes for active distribution grids
(English) Reliable and uninterrupted power supply is crucial for modern societies. Therefore, the minimization of the power outages' duration is a priority for the power system operators. This thesis aims to contribute to ...
Partial discharges in low-pressure atmosphere: an experimental approach to improving electrical protection
(English) This thesis contributes to the field of partial discharges in low-pressure environments, aiming to improve electrical wire interconnecting systems (EWIS) protection in aerospace applications. A series of experimental ...
Development, optimization and experimental validation of smart devices for substations and power transmission lines
(English) In recent years, there has been a significant increase in the growth of electricity demand. This electricity demand requires retrofitting of lines or exploiting the maximum capacity of existing power lines. In ...
Influence of electrostatic charge on lightning interactions with aircraft and wind turbines: an experimental approach to an active charge control application
(English) Lightning strikes to aircraft and wind turbines can lead to substantial repair expenses. These structures often trigger lightning strikes, in the form of bidirectional leaders in the case of aircraft and upward ...
Contribution to optimal microgrid design and management in uncertain and regulated environments
(English) The rise of distributed generation systems (DGSs) is crucial for the energy transition. The reduction in renewable energy costs and increasing implementation of environmentally-friendly policies are driving a new ...
Modeling and characterization of single-phase and three-phase transformers based on minimum information
(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 ...
Design optimization of dual active bridge converter
(English) The proliferation of batteries for local storage and electric vehicles (EVs) is rising steadily. The EV market’s prospects point to exponential growth in the coming years. This trend has also contributed to the ...
Localizaciones con impactos de rayos recurrentes : aportación a la distribución geográfica de rayos con corrientes extremas y a la caracterización de rayos que afectan aerogeneradores
(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 ...
Energy management systems for smart homes and local energy communities based on optimization and artificial intelligence techniques
(English) The rapid advancement of digitalization, combined with the integration of renewable generation and the development of information and communication technologies within the distribution network, is accelerating ...
Computational analysis of modern power systems with power electronics
(English) Modern power systems have been and will continue to be increasingly penetrated with power electronics at different voltage levels. Such high penetration of power electronics elements changes the nature of modern ...
Enhanced flux-weakening control algorithm for permanent magnet synchronous machines
(English) EspinarThis thesis presents the overall state of the art of electric vehicles in terms of the technology of the main concepts in an electric powertrain: batteries, traction inverters, electric machines, and control ...
Power calculation algorithm under nonlinear loads and Hopf oscillator-based synchronization controller for grid-forming inverters in a microgrid
(English) In the grid-forming control of microgrids, the droop control is a widely used for the parallel operation of power inverters, but has some peculiarities as slow dynamic and inaccuracy in the power sharing. In the ...
Dc-dc converters for HVDC heterogeneous interconnections
(English) High voltage direct current (HVDC) technologies have been used for bulk power transmission over long distances since the 1950s. These technologies have proven to be the most cost-efficient compared to the high ...
Mathematical programming-based models for the distribution networks' decarbonization
(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 ...
Development of a VHF broadband interferometer to investigate unsolved lightning phenomena: high-energy radiation from lightning strikes and multi-stroke positive cloud-to-ground flashes
(English) The aim of this thesis work is the development of a VHF broadband interferometer for lightning research. The observations with this instrument allowed us to investigate some unsolved aspects of lightning related ...
Possibilities and limitations of active battery management systems for lithium-ion batteries
(English) Lithium-Ion Batteries (LIBs) are being used in more and more areas of application. At the same time, their chemical composition and their designs are constantly evolving. Major developments are also taking place ...
