Blar i Institutt for elkraftteknikk på emneord "Energi og miljø, Elektrisk energiomforming"
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A signal analysis toolbox for power system identification in Smart Grids
(Master thesis, 2018)This thesis delves into the two fields of signal analysis and small-signal stability of power systems. Due to the extensive deployment of PMUs in today s Smart Grid, new possibilities arise to assess the small-signal ... -
A Study of Deep Sea Mining Electrical Power System Topologies
(Master thesis, 2017)Deep sea mining (DSM) is an emerging technology. The ever-increasing world-wide need for minerals in growing markets and industries of developing countries has made DSM financially reasonable. As there are few known system ... -
Active Filter Capability of a Voltage Source Inverter in Marine Applications
(Master thesis, 2017)This thesis is centered around the possibilities of utilizing the active filter capability of a Voltage Source Inverter (VSI) to mitigate harmonic distortion in a marine power system. Hotel loads in marine vessels ... -
Adaptive Resonant Controllers in a Modular Multilevel Converter - An Analytical Study of the Circulating Current Suppressing Controller
(Master thesis, 2018)In this thesis work, the modular multilevel converter was investigated. More specifically, an analytical study of circulating current suppression methods for low-bandwidth systems was undertaken. A comparative study of two ... -
Adjustable Speed of Synchronous Machine for Hydro Power Application
(Master thesis, 2017)When Europe is transitioning from fossil fuels to renewables, hydropower plants will have an important role in the integration of large quantities of fluctuating sources in the power system, such as wind and solar. With ... -
An Integrated Tool for Microgrid Design in Rural Areas
(Master thesis, 2015)PV-microgrids are becoming an affordable alternative to provide electricity access to remote or isolated regions, due to both a reduction in prices on solar panels and a strong focus on utilisation renewable energy resources. ... -
Analysis of Harmonic Conditions in Subsea Electrical Power Systems for Oil and Gas Installations
(Master thesis, 2015)Models of two separate network topologies are developed in cooperation with Statoil ASA to assure realistic construction of the networks along with relevant scenarios. The networks are implemented, simulated and thoroughly ... -
Analysis of relay protection for generators in offshore facilities
(Master thesis, 2015)This thesis study how to configure protective relays for protection of generators in offshore oil and gas facilities. On the Norwegian continental shelf, most platforms have isolated power systems with local power generation ... -
Application of Modular Multilevel Converter for Interfacing Grid-Connected Photovoltaic Conversion Plants
(Master thesis, 2015)This thesis investigates the applicability of the Modular Multilevel Converter (MMC) for interfacing grid connected photovoltaic conversion plants. A detailed three-phase 9-level simulation model is implemented in Simulink. ... -
Application of Scaling Laws for Direct Drive Permanent Magnet Generators in Wind Turbines
(Master thesis, 2015)The object of this thesis is to investigate the use of scaling laws for Permanent Magnet Generators (PMGs). The product is a graphical tool named the Scaling Program, which is created in MATLAB GUIDE. The most applicable ... -
Assembly and Testing of Superconducting Field Winding
(Master thesis, 2016)Superconducting rotor windings are considered for large offshore wind turbines to reduce weight, size and cost. The European project INNWIND.EU utilize various national projects in different European countries to accelerate ... -
Battery energy storage integration via DC/AC converter in grid connected wind turbines
(Master thesis, 2018)The growing need of battery energy storage to support the increase in renewable production in the electricity mix has brought the attention to the modular multilevel converter (MMC) for medium voltage applications. Modular ... -
Battery energy storage system connected to a three-phase 50 Hz-grid
(Master thesis, 2017)Battery energy storage systems (BESS) employing secondary battery technology may offer the greatest potential for large-scale integration of renewable energy sources (RES), and is considered a key element for enabling smart ... -
Battery inductive charging for electrical mobility applications
(Master thesis, 2015)This report is a master thesis at the Department of Electrical Engineering at the Norwegian University of Science and Technology (NTNU). The purpose of the thesis was to find a control system used for regulating a system ... -
Breakdown at Multiple Protrusions and Surface Roughness in SF6 and CO2 - A Study of the Enlargement Law
(Master thesis, 2018)Gas insulated components are important in the modern transmission system. The most common gas used in high pressure insulation is Sulphur Hexafluoride (SF6). SF6 has beenclassified as a greenhouse gas and a potential ... -
Causes and Impacts of Partial Shading for a Building-Applied PV System
(Master thesis, 2016)The world as we know it today is full of technical equipment that requires energy of some sort, let it be oil, gas or electricity. With an increasing growth of the earth s population, as well as a boost in the general ... -
CLIQ Based Quench Protection of 16 [T] Nb3Sn Block-Coil Dipole Magnets for a Future Circular Collider
(Master thesis, 2015)Protection of large high-field, high-energy accelerator magnets is very challenging with current technology. To avoid damage to the magnet coil by local or global overheating, the maximum temperature in the hot-spot of the ... -
Comparing the Surface- and Interior Permanent Magnet Machine with Concentrated Windings for High Dynamic Applications
(Master thesis, 2017)This paper will compare the surface permanent magnet (SPM) machine to the interior permanent magnet (IPM) machine with fractional slot concentrated winding (FSCW). Key features is to achieve high field weakening with low ... -
Condition Assessment of Hydro Generator Insulation Using Partial Discharge Measurements
(Master thesis, 2018)More than half of all hydro generator failures are caused by insulation breakdown. Insulation failures inflict serious damage on the generator and represent significant operating costs for utility companies. One of the ... -
Condition Assessment of Oil Impregnated Paper Transformer Insulation using DC Conduction Measurements.
(Master thesis, 2016)The objective of this thesis has been to study how DC conduction measurementscan be used as a diagnostic tool for condition assessment of oil impregnated paper.In this context, the DC conduction measurements were performed ...