Recent Submissions

Development of a methodology for optimizing transformers and devices with magnetic core 

Badri Barberán, José Antonio (Date of defense: 2025-09-26)

(English) This thesis contributes to the field of design and optimization of magnetic core devices, specifically transformers for power electronics. A calculation software has been developed for the design of transformers, ...

Grid-forming strategies for renewable energy sources 

Girona-Badia, Jaume (Date of defense: 2025-07-18)

(English) Modern power systems are increasingly integrating a larger share of renewable energy resources to mitigate climate change. These renewable resources are gradually replacing conventional power plants, which employ ...

DC-side differential mode filtering for voltage source converters 

Raab, Sebastian (Date of defense: 2025-07-16)

(English) When using voltage source converters (VSC) to control the load flow between the DC voltage circuit and n-phase AC consumers/generators, distortion currents/voltages occur due to the principle involved. These ...

Machine learning methods for smart grid operation with LECs 

Hernández Matheus, Alejandro Henrique (Date of defense: 2025-07-28)

(English) Recent technological developments in renewable energy have enabled a shift in the energy generation capacity closer to the consumption. This evolution has led to a decentralisation process that is required for ...

Conceptualization, design and optimal operation of hybrid AC-DC power router grids 

Gadelha Teixeira Filho, Vinicius (Date of defense: 2025-06-20)

(English) Driven by increasingly strict climate goals, the need for modernization of the electric power system has intensified in recent years. The transition towards a distributed and decarbonized smart energy system ...

Supervised learning for optimal investment planning in active distribution networks 

Saldaña González, Antonio Emmanuel (Date of defense: 2025-06-16)

(English) Due to the exponential growth of electric vehicles and distributed generation in distribution networks, potential congestion in power lines, transformers, and voltage deviations is expected to increase in the ...

Designing and development of secure protection strategies for distribution network integrated with distributed energy resources 

Al Hanaineh, Wael Hasan Ahmad (Date of defense: 2025-05-16)

(English) Global electricity generation increasingly incorporates Distributed Generation (DG) resources, such as solar and wind, into distribution systems (DS), offering benefits like improved reliability, power quality, ...

Control of a grid of multiple AC and DC sub-systems interconnected with power converters 

Arévalo Soler, Josep (Date of defense: 2025-05-07)

(English) High Voltage Direct Current (HVDC) offers clear advantages for long distance electrical transmission. This is why its implementation is rising in the interconnection of remote renewable energy and interconnection ...

El disco de Aragó: análisis electrodinámico de rotores discoidales conductores 

Paul Recarens, Carles (Date of defense: 2025-03-14)

(English) In this thesis, important ideas like electricity, magnetism, electric motors, special relativity, and history are explained. This is because, on the one hand, the historical memory of Francesc Aragó, a 19th-century ...

Control design for converters in modern power system 

Dadjo Tavakoli, Saman (Date of defense: 2024-11-22)

(English) Dynamic behavior of modern power system is increasingly influenced by the dynamics of power converters. At the generation level, a high volume of wind and solar energy with their large-scale power converters are ...

Control of floating offshore energy hubs 

Pozo González, Héctor del (Date of defense: 2024-10-04)

(English) The significant worldwide offshore potential has garnered considerable interest from energy companies and oil and gas plant owners in recent years. With significant advancements in bottom-fixed structures, floating ...

Active online characterization of lithium-ion batteries 

Hein, Thiemo Harald (Date of defense: 2024-10-23)

(English) Lithium-ion cells are commonly used in a variety of applications today. Depending on the power and energy requirements of the application, several cells are interconnected. Due to intrinsic and extrinsic factors, ...

Stability analysis of modern power systems 

Collados Rodríguez, Carlos (Date of defense: 2024-03-04)

(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 

Roncancio Guzmán, José Andrés (Date of defense: 2024-10-31)

(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 

El Mariachet Carreño, Jorge (Date of defense: 2021-09-08)

(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 

Romero Durán, David (Date of defense: 2022-10-28)

(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 

Stefanidou Voziki, Paschalia (Date of defense: 2023-01-10)

(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 

Bas Calopa, Pau (Date of defense: 2024-05-06)

(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 

Liu, Yuming (Date of defense: 2024-01-26)

(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 

Fontanes Molina, Pol (Date of defense: 2023-11-17)

(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 ...