Programa de Doctorat en Enginyeria Elèctrica: Recent submissions
Now showing items 61-80 of 154
Analysis and implementation of a methodology for optimal PMa-SynRM design taking into account performances and reliability
Automotive applications focus to develop drive-train technologies with higher energy efficiency and lower environmental impact. Electric and hybrid vehicles are gaining popularity since they fulfill these requirements . ...
Large scale photovoltaic power plants: configuration, integration and control
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 ...
Control and operation of wind power plants connected to DC grids
Remote offshore wind power plants (WPPs) are being linked through high-voltage de voltage-source converter (VSC-HVdc) transmission to the main grids. The current deployments of HVdc grid connections for offshore WPPs are ...
Offshore grid control of voltage source converters for integrating offshore wind power plants
The offshore grid in North and Baltic Sea can help Europe to achieve 2020 and 2030 renewable energy target to counter climate changes . The formation of offshore grid requires the interconnection between several offshore ...
Direct current control for grid connected multilevel inverters
Control schemes for inverters of different topologies and various numbers of voltage levels are of great interest for many standard as well as special applications. This thesis describes a novel, robust and high-dynamic ...
Operation of HVDC converters for transformer inrush current reduction
The present PhD thesis deals with transformer inrush current in offshore grids including offshore wind farms and High Voltage Direct Current (HVDC) transmission systems. The inrush phenomenon during transformers energization ...
Estudio y caracterización armónica de las lámparas fluorescentes compactas de baja potencia
This Doctoral Thesis is framed within the generic issue of power quality and more specifically in the study and harmonic characterization of low power compact fluorescent lamps (CLFs) with integrated ballast, also called ...
Anàlisi experimental de la problemàtica de càrrega-descàrrega de ACEE aplicables en transports
lt's a well-known fact that the flywheel stores energy inside, and this energy is proportional to the rotational speed and the moment of inertia. lf the moment of inertia increases, the energy increases in the same proportion ...
Stand-alone hybrid renewable energy systems (HRES)
End of Energy Poverty and achieving Sustainable Energy for all by 2030 is a universal challenge. 1.3 billion people without energy access and 2.8 billion people using unsustainable solid fuel for cooking and heating are ...
High frequency modeling of power transformers under transients
This thesis presents the results related to high frequency modeling of power transformers. First, a 25kVA distribution transformer under lightning surges is tested in the laboratory and its high frequency model is proposed. ...
Modular multilevel converters for power system applications
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 ...
Control contributions to AC microgrid inverters
This thesis is focused on the microgrid control framework. Specifically, it is concentrated on alternative current microgrids. As a result of the author involvement in different industrial projects concerning microgrids ...
Desarrollo de herramientas constructivistas para la publicación y personalización de contenidos de cursos en línea
Since early times in internet, there have been training experiences with different success. Sometimes because they were complicated to use, others for the state of technology, or because the public has not supported it. ...
Analysis and control of multi–area HVDC interconnected power systems by using virtual inertia
Virtual inertia is known as an inevitable part of the modern power systems. Recent trend of research is oriented in different methods of emulating virtual inertia in different part of the systems. This dissertation is ...
Protection and fault management in active distribution systems
The integration of renewable energy resources (RES), as a type of distributed generation (OG) units, is increasing in distribution, systems. This integration, changes the topology, performance and the operational aspects ...
Development of high-capacity substation connectors compatible with HTLS technology
The advent of HTLS (High Temperature, Low Sag) conductors imposes more severe operating conditions on devices such as substation connectors intended for transmission and distribution systems, which are subjected to higher ...
Electromagnetic models for ultrasound image processing
Speckle noise appears when coherent illumination is employed, as for example Laser, Synthetic Aperture Radar (SAR), Sonar, Magnetic Resonance, X-ray and Ultrasound imagery. Backscattered echoes from the randomly distributed ...
Análisis y comparación de algoritmos de un PLL monofásico basados en un filtro paso todo digital
The phase-locked loop (PLL) is an element of a grid-connected converter system, which provides phase angle and frequency measurements of the grid voltage. The PLL takes care of control the synchronization with the grid ...
Aportaciones al control de la máquina de reluctancia híbrida HRM como motor y generador
The nature of the SRM (Switched Reluctance Motor) makes this type of motor one of the candidates to investigate over the next few years. Its mechanical development is simple and inexpensive, but requires an electronic ...
Power converter control for offshore wind energy generation and transmission
This thesis discusses the control of different power converters that will have a key role in future offshore wind power systems, enabling the integration of the power generated by the wind turbines into the mainland ...
