Departament d'Enginyeria Elèctrica: Envíos recientes
Mostrando ítems 81-100 de 165
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 ...
Analysis of power distribution systems using a multicore environment
Currently it is widely accepted that the construction of large generation centers is no longer the best option to supply the increment of electric load. High costs related to the construction of new generation centers, ...
Operation and control of transmission systems for offshore wind power plants
This thesis deals with grid integration of oshore wind power plants through HVDC (High Voltage Direct Current) or HVAC (High Voltage Alternating Current) transmission . The behaviour of wind farms and their transmission ...
Multi-terminal HVDC grids control and operation
In recent years, there have been considerable efforts in the design and development of technologies and techniques for more efficient harvesting of renewable energy resources to meet the ever increasing electric power ...
Sistema d'anàlisi i planificació de xarxes de distribució d'energia elèctrica de mitjana tensió
The optimal planning of the annual development tasks of a medium voltage power distribution network, to tackle the evolution of the demand with maximum levels of quality and continuity of service and minimum investment, ...
Electricitat i foc: aportacions experimentals d'aplicació docent
According to reliable statistics, electrical fire ignition sources have a notable impact regarding the generation of fires and explosions. Electrical equipment and installations can also be the victims of fire. This is due ...
Aporte a la sostenibilidad y eficiencia energética de las viviendas de interés social de la zona intertropical : caso América del Sur
The present work is framed in the area of the EE, raising main objectives: * The study and analysis of the State of energy efficiency in some Latin American countries * Analyze regulations, rules and standards in force ...
Control of voltage source converters for distributed generation in microgrids
Microgrids are the near future candidate to reduce the dependence on the carbon-based generation, towards a more environmentally friendly and sustainable energy paradigm. The popularization of the use of renewable energy ...
Control and operation of multi-terminal VSC-DC networks
For the past century, ac networks have been established as the standard technology for electrical power transmission system s. However, the de technology has not disappeared completely from this picture. The capability of ...
Análisis de la actividad de rayos y de tormentas relacionadas con la producción de rayos gamma terrestres
Terrestrial Gamma ray Flashes (TGFs) have been known since 20 years ago, but since the first moment of the discovery it was clear that they were related to lightning and thunderstorms. The latest studies revealed that TGFs ...
Analysis and design of fault tolerant axial flux permanent magnet synchronous motors
Electric vehicles (EVs) are attractive comparted to internal combustion engine powered vehicles due to several benefits, including low emissions, higher efficiency, less maintenance costs, stronger acceleration or lower ...
Assessment of color quality and energy effciency : new insights for modern lighting. Part I : color quality in general lighting applications. Part II : mesopic photometry and street lighting
This dissertation is divided in two parts: The first one deal with two main characteristics of the light sources for general lighting: Color quality and luminous efficacy. The second one deals with technical aspects of the ...
Sostenibilidad técnica, económica y ambiental de flotas comerciales de vehículos eléctricos
This doctoral thesis analyses whether electric vehicle is technical, economic and environmental sustainable. We have studied a company fleet of electric vehicles which has a carsharing service for the retail department to ...
Caracterización armónica de dispositivos de iluminación de eficiencia energética
This doctoral thesis is presented as a compendium of six (6) articles published in Science Citation Index journals. The work proposes harmonic models of some of the most common energy efficient lighting devices in electrical ...
