Searched for: department%3A%22Electrical%255C+Sustainable%255C+Energy%22
(81 - 100 of 126)
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Prazeres, J.R.E.G. (author)With the current surge in the development and use of Electric Vehicles (EVs) due to increased environmental consciousness, methods to increase the driving range and improve the battery charging conditions of these vehicles have become important research areas. Inductive Power Transfer (IPT) is one of the solutions to the challenges currently...master thesis 2014
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Leal, A. (author)Chile is an energy independent country; goal achieved due to the diversification of the energy matrix and promoting exploitation of renewable energies. On the other side, Argentina holds permanent electricity importations from its neighboring countries, relying on these transactions to supply its demand. The Northern Interconnected System (SING)...master thesis 2014
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Blufpand, S.Y. (author)The thesis consists of 7 chapters. The first chapter will explain the background, motivations and the general overview of the thesis. Chapter 2 is a literature review describing the physics behind the creation of PDs. The conditions necessary for the occurrence of PDs are covered in addition to an analysis of the different types of PD in GIS...master thesis 2014
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Vismara, R. (author)Advanced texturization is a promising approach to increase the performance of thin-film solar cells. Currently, light trapping schemes implemented in state-of-the-art devices utilize randomly textured interfaces to increase their optical performance. Periodic gratings, however, have the potential to outperform their random counterparts and are...master thesis 2014
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Rognvaldsson, H.H. (author)This master’s thesis project is considered to be a starting point for further research in the field of intelligent electrical power grids with the main goal to increase the reliability in real-time operations of electrical power systems. The increased reliability will consequently increase the confident level of electrical power system operators...master thesis 2014
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Tan, J. (author)With the growth of the number of electric appliances which suffer from electromagnetic inference (EMI) in the frequency range 2 k – 150 kHz, the setting up of researches in this field has become more and more popular. Measuring impedances accurately in this frequency range is of great assistance for better understanding of the circuit as well as...master thesis 2014
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Papakonstantinou, G. (author)For a prolonged period, the photovoltaic industry has been on the brink of transition towards improving the performance and reducing the manufacturing costs of solar cells. In this view, hydrogenated amorphous/crystalline silicon (a-Si:H/c-Si) heterojunction (SHJ) solar cells have gained considerable attention, by bridging the benefits of c-Si...master thesis 2014
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Shipurkar, U. (author)With growing interest in sustainable forms of energy, the wind industry is growing rapidly. The Doubly Fed Induction Generator is the most popular choice for the drivetrain because it is cost effective. However, it suffers from reliability and maintenance issues due to the slip rings and brushes it requires. The Brushless Doubly Fed Induction...master thesis 2014
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Marcelis, P.J. (author), De Groot, O.F.C. (author)De huidige beschikbare laadpalen zijn eenvoudige voedingsbronnen die geen rekening houden met omstandigheden zoals het energieverbruik van de rest van een gebouw. Hierdoor ontstaan pieken in het energiegebruik en dit brengt hoge kosten met zich mee. Software die nodig zal zijn voor het opladen van elektrische voertuigen met kostenbesparende...bachelor thesis 2014
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Taal, A.J. (author), Van Wee, S.G. (author)Een toegankelijke oplaadinfrastructuur wordt gezien als één van de belangrijkste factoren voor de overstap naar elektrisch personenvervoer. Huidige oplaadpalen voor elektrische personenauto's zijn ontworpen om slechts één voertuig tegelijkertijd op te laden. Het probleem dat hieruit voortvloeit is verspilling van laadcapaciteit wanneer auto's...bachelor thesis 2014
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Pantziris, K. (author)The rapidly increasing penetration of rooftop PV systems in rural LV distribution networks calls for the attention of DNOs in order to secure end-user voltage range. In times of high photovoltaic generation and low load consumption, voltage at PCCs may exceed the specified upper limit and make PV inverters trip. This phenomenon hinders further...master thesis 2014
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Lanaras, E. (author)The transfer of energy between systems that are not connected by physical contact between them can be accomplished by wireless power transfer methods, through electromagnetic field or radiation between a primary-transmitter and a secondary-receiver section. In the particular field of e-mobility, inductive power transfer systems have been...master thesis 2014
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Harihara Subramanian, K.K. (author)The commercial efficiency of a c-Si solar cell is ~18% although the thermodynamic limit is ~95%. This indicates a good scope for improvements. The major loss mechanism in a solar cell is spectral mismatch which is contributed to by non-absorption of low energy photons and thermalization of high energy photons. In this thesis, it is sought to...master thesis 2013
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- Azari, D. (author) master thesis 2013
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Schouten, M. (author)Photovoltaic energy is one of the key components of a sustainable energy future. While the market is currently dominated by crystalline silicon solar modules, thin-film silicon technology holds the promise of a cheap, resource-efficient and versatile alternative. The major drawback of thin-film silicon PV is its relatively low conversion...master thesis 2013
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Kontos, E. (author)The increasing global energy needs and the high integration of renewable energy generation have changed the requirements for the electricity grid. Countries are becoming unable to cover their energy demands with their own means and the need for power exchange between neighboring countries has increased. Consequently, power needs to be...master thesis 2013
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Chandra Mouli, G.R. (author)In recent years, high penetration of distributed generation (DG) driven by PV panels and heavy load insertion in the distribution network has led to frequent voltage fluctuations in the form of undervoltage and overvoltage. Voltage control using traditional voltage regulators are unable to cope with this situation as frequent tap changes reduce...master thesis 2013
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Velitsikakis, K.S. (author)Modern transmission power networks consist mainly of High Voltage overhead lines, since the later have proven their high operational reliability. However, technological developments have made it possible to use High Voltage cables, not only in the distribution grids, but also at higher transmission voltage levels. Thus, more mixed configurations...master thesis 2013
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Manev, A.M. (author)The thesis presents a detailed design of 1.5kW induction cooker capable of heating all types of metals employed in the everyday cooking vessels. The design is based on newly developed control approach for resonant LLC DC-DC converters by NXP Semiconductors. The approach reduces the close loop transfer function of resonant converter to first...master thesis 2013
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Kanas, V. (author)During the last 50 years electricity demand has significantly increased. Large amounts of electricity are transported from the generation to the consumption sites. Overhead lines or underground cables are used to transport the required energy. High voltage levels are used to reduce the transmission losses. Power transformers are responsible for...master thesis 2013
Searched for: department%3A%22Electrical%255C+Sustainable%255C+Energy%22
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