Departament d'Enginyeria Elèctrica: Recent submissions
Now showing items 1-12 of 138
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Control of power converter in modern power systems
(Universitat Politècnica de Catalunya, 2022-03-23)
Doctoral thesis
Open AccessPower 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
(Universitat Politècnica de Catalunya, 2022-02-22)
Doctoral thesis
Open AccessDuring 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
(Universitat Politècnica de Catalunya, 2022-03-04)
Doctoral thesis
Open AccessThis 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
(Universitat Politècnica de Catalunya, 2022-02-07)
Doctoral thesis
Open AccessDistributed 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
(Universitat Politècnica de Catalunya, 2021-12-03)
Doctoral thesis
Open AccessIn 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
(Universitat Politècnica de Catalunya, 2022-01-11)
Doctoral thesis
Open AccessNowadays, 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
(Universitat Politècnica de Catalunya, 2022-01-17)
Doctoral thesis
Open AccessWith 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
(Universitat Politècnica de Catalunya, 2022-01-11)
Doctoral thesis
Open AccessIn 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
(Universitat Politècnica de Catalunya, 2021-12-16)
Doctoral thesis
Open AccessDistributed 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
(Universitat Politècnica de Catalunya, 2021-11-12)
Doctoral thesis
Open AccessIn 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
(Universitat Politècnica de Catalunya, 2021-10-01)
Doctoral thesis
Open AccessOn 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
(Universitat Politècnica de Catalunya, 2021-10-22)
Doctoral thesis
Open AccessClimate 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 ...
