Searched for: department%3A%22Electrical%255C%252BSustainable%255C%252BEnergy%22
(301 - 320 of 445)
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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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Buatois, A. (author), Gibescu, M. (author), Rawn, B.G. (author), Van der Meijden, M.A.M.M. (author)This paper evaluates, for a 2030 scenario, the impact on onshore power systems in terms of the variability of the power generated by 81 GW of offshore wind farms installed in the North Sea. Meso-scale reanalysis data are used as input for computing the hourly power production for offshore wind farms, and this total production is analyzed to...journal article 2014
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Fragoso Rodrigues, S.M. (author), Bauer, P. (author), Bosman, P.A.N. (author), Pierik, J. (author)Offshore wind farms with high installed capacities and located further from the shore are starting to be built by northern European countries. Furthermore, it is expected that by 2020, several dozens of large offshore wind farms will be built in the Baltic, Irish and North seas. These wind farms will be constituted of a considerable number of...conference paper 2014
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Santbergen, R. (author), Hairen, T. (author), Zeman, M. (author), Smets, A.H.M. (author)The scattering cross-section of a plasmonic nanoparticle is proportional to the intensity of the electric field that drives the plasmon resonance. In this work we determine the driving field pattern throughout a complete thin-film silicon solar cell. Our simulations reveal that by tuning of the thicknesses of silicon and transparent conductive...journal article 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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Electrical Sustainable Energy Department (author)In the present deliverable, the results of the second common ‘Workshop on intermediate results’, co-organized by UMBRELLA and iTesla projects are summarized. The workshop was hosted at ENTSO-E’s premises on January 14th, 2014 with a total number of some 80 registered participants including experts from industry, academia and regulatory bodies.report 2014
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Hart, K. (author), McDonald, A. (author), Polinder, H. (author), Corr, E. (author), Carroll, J. (author)This paper investigates geared and direct-drive permanent magnet generators for a typical offshore wind turbine, providing a detailed comparison of various wind turbine drivetrain configurations in order to minimise the Cost of Energy. The permanent magnet generator topologies considered include a direct-drive machine and single stage, two-stage...conference paper 2014
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Abrahamsen, A.B. (author), Magnusson, N. (author), Liu, D. (author), Stehouwer, E. (author), Hendriks, B. (author), Polinder, H. (author)A superconducting direct drive generator based on field windings of MgB2 superconducting tape is proposed as a solution by mounting the generator in front of the blades using a king-pin nacelle design for offshore turbines with power ratings larger than 10 MW as investigated in the INNWIND.EU project.conference paper 2014
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Thomas, W. (author)The growing energy consumption of lighting as well as rising luminous efficacies and -fluxes of high-power Light Emitting Diodes (LEDs) have contributed to the widespread use of LEDs in modern lighting systems. One of the most prominent users of the LED-technology is automotive (exterior) lighting. It benefits from LEDs’ high efficiencies and...doctoral thesis 2014
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Teixeira Pinto, R. (author)When large amounts of electricity need to be transported for long distances, or when underground or submarine cables are involved, using direct current high-voltage transmission systems is more efficient and cost effective than using traditional high-voltage alternating current transmission. Therefore, the main thesis objective is to study to...doctoral thesis 2014
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Josifovic, I. (author)Current PCB power converter construction technologies are based on the utilization of nonstandardized building blocks. Utilization of passive components with various shapes, poor thermal properties and mixed technology mounting (THT and SMT) represents fundamental limit for reaching high power density, effective thermal management, particular...doctoral thesis 2014
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Ferreira, J.A. (author)Electrical power converter for converting electrical power of a power source connected or connectable at an input to electrical DC-power at an output, wherein between the input and the output a first circuit of submodules is provided, wherein said first circuit of submodules and the power source form a primary power loop and wherein each...patent 2014
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Chmura, L.A. (author)Nowadays, utilities are confronted with assets reaching or even exceeding their designed life. This in turn, implies the occurrence of upcoming replacements to assure reliable network operation. In this thesis, the application of statistical tools for life-time and residual life assessment of high-voltage assets installed in a power network is...doctoral thesis 2014
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Zuijderduin, R. (author), Chevtchenko, O. (author), Smit, J.J. (author), Aanhaanen, G. (author), Ross, R. (author)The electricity grid of the Netherlands is changing. There is a call of society to use more underground cables, less overhead lines (OHL) and to reduce magnetic emissions. At the same time, parts of the future transmission grid need strengthening depending on the electricity demand in the coming decades [1]. Novel high temperature superconductor...conference paper 2014
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Abrahamsen, A.B. (author), Magnusson, N. (author), Jensen, B.B. (author), Liu, D. (author), Polinder, H. (author)An MgB2 race track coil intended for demonstrating a down scaled pole of a 10 MW direct drive wind turbine generator has been designed. The coil consists of 10 double pancake coils stacked into a race track coil with a cross section of 84 mm x 80 mm. The length of the straight section is 0.5 m and the diameter of the end sections is 0.3 m....conference paper 2014
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Simons, C.A.B.A.E. (author), Sanabria-Walter, C. (author), Polinder, H. (author)During the past decades, superconducting electrical machines have become more suitable to replace conventional iron based designs, because of their lower weight and higher torque density. These properties make them good candidates for use in More Electric Aircraft (MEA). Especially helicopter propulsion systems could benefit from the increased...conference paper 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
Searched for: department%3A%22Electrical%255C%252BSustainable%255C%252BEnergy%22
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