Departament d'Enginyeria Elèctrica

Recent Submissions

Modular platform for research in microgrids 

Lledó Ponsati, Tomàs (Date of defense: 2022-07-15)

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 ...

Enhance OF SOGI-FLL and SOGI-PLL response to voltage sags and swells perturbations 

Abdali Nejad, Sajad (Date of defense: 2022-07-19)

The scope of this thesis is related to the enhancement of the operation of distributed generators (DGs) based on renewable energies (REs) when connected to the conventional grid network. Synchronization of those DGs, i.e. ...

Remaining useful life and fault detection models for high voltage electrical connectors focused on predictive maintenance 

Martínez Reyes, Jimmy Arturo (Date of defense: 2022-07-08)

In recent years, industries have chosen to invest in technology with the aim of making their processes more efficient and thus offering market products of higher quality. Nowadays it is very common for companies to use ...

Optimal operation and design of modular multilevel converter for HVDC applications 

Westerman Spier, Daniel (Date of defense: 2022-06-30)

Modular Multilevel Converters (MMCs) are a type of Voltage Source Converter (VSC) which have become the preferred topology choice for High Voltage Direct Current (HVDC) applications. Compare to its HVDC converter predecessors, ...

Contribucions a l'estudi de rectificadors no controlats m-fàsics en condicions no equilibrades per unitats TRUs o ATRUs multi polsos 

Saura Perisé, Jaime (Date of defense: 2022-06-22)

This doctoral thesis has been developed to provide a new point of view and a new approach to the analysis and study of uncontrolled bridge rectifiers. The methodology developed has been generalized to extend the study to ...

Control of power converter in modern power systems 

Lai, Ngoc Bao (Date of defense: 2022-03-23)

Power system is undergoing an unpreceded paradigm shift: from centralized to distributed generation. As the renewable-based generations and battery storage systems are increasingly displacing conventional generations, it ...

Virtually synchronous power plant control 

Tarrasó Martínez, Jaime (Date of defense: 2022-02-22)

During the last century, the electrical energy infrastructures have been governed by synchronous generators, producing electrical energy to the vast majority of the population worldwide. However, power systems are no longer ...

Corona discharges from grounded rods and 337/777 nm emissions of laboratory long sparks 

Arcanjo, Marcelo Augusto Sousa (Date of defense: 2022-03-04)

This thesis presents an investigation on the signatures of corona discharges from grounded rods under thunderstorms and in the laboratory, with optical detections in the 337/777 nm wavelengths for high voltage sparks. This ...

Sag effects on protection system in distributed generation grids 

Bakkar, Mostafa (Date of defense: 2022-02-07)

Distributed Generators (DGs) are sensible to voltage sags, so the protection devices must trip fast to disconnect the faulted part of the grid. The DG disconnection will not be desirable in the near future with a large ...

Data-driven methodologies for evaluation and recommendation of energy efficiency measures in buildings. Applications in a big data environment 

Grillone, Benedetto (Date of defense: 2021-12-03)

In order to reach the goal set in the Paris agreement of limiting the rise in global average temperature well below 2 ºC compared to pre-industrial levels, massive efforts to reduce global greenhouse gas emissions are ...

Modeling and identification of power electronic converters 

Rojas Dueñas, Gabriel (Date of defense: 2022-01-11)

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. ...

Aportaciones al control corriente de convertidores VSC de sistemas eólicos conectados a redes eléctricas perturbadas 

García Quintanilla, José Ignacio (Date of defense: 2022-01-17)

With the increasing development of renewable energy sources and their integration into the grid, international standards require next-generation plants to achieve the same levels of reliability and performance as the current ...

Design optimization and performance analysis methodology for PMSMs to improve efficiency in hydraulic applications 

Candelo Zuluaga, Carlos Andres (Date of defense: 2022-01-11)

In the recent years, water pumping and other hydraulic applications are increasingly demanding motors capable to operate under different working conditions, including variable pressure and volumetric flow demands. Moreover, ...

Control strategy of grid connected power converter based on virtual flux approach 

Roslan, Nurul Fazlin (Date of defense: 2021-12-16)

Distributed Generation (DG) provides an alternative to the Centralized Generation (CG) by means of generating electricity near to the end user of power with the employment of small-scale technologies to produce electricity, ...

Caracterización de la electrificación de tormentas para su aplicación en procesos de sistemas de alerta: el caso de aerogeneradores y otras infraestructuras elevadas 

Salvador Yuste, Albert (Date of defense: 2021-11-12)

In an increasingly technological society,vulnerability to the effects of lightning is also increasing. The implementation of monitoring and surveillance systems in real time of lightning activity can greatly improve the ...

Flexibility services for distribution network operation 

Munné Collado, Íngrid (Date of defense: 2021-10-01)

On the way towards a low carbon electricity system, flexibility has become one of the main sources for achieving it. Flexibility can be understood as the ability of a power system to cope with the variability and uncertainty ...

Energy security in power systems within the frame of energy transitions 

Fuentes Ruiz, Sergio (Date of defense: 2021-10-22)

Climate change is real. Global human population is growing as never before. Natural resources are limited. These factors have taken different countries to embrace new pathways in order to fulfill the energy needs of their ...

Aportación al análisis de la distribución de corriente del rayo en palas de aerogenerador equipadas con fibra de carbono 

Rey Fernández, José Antonio (Date of defense: 2021-08-04)

This doctoral thesis investigates the current distribution in a wind turbine blade when it is struck by lightning. The thesis focuses on the problem of current distribution in blades with carbon fiber spar caps. In the ...

Photovoltaic power converter for large scale applications 

Verdugo Retamal, Cristian Andrés (Date of defense: 2021-07-23)

Most of large scale photovoltaic systems are based on centralized configurations with voltage source converters of two or three output voltage levels connected to photovoltaic panels. With the development of multilevel ...

Measuring energy sustainability by using energy sustainability indicators 

Razmjoo, Ali (Armin) (Date of defense: 2021-02-19)

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 ...