Browsing Institutt for elkraftteknikk by Subject "Elektrisk energiteknikk"
Now showing items 1-20 of 131
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2D Finite Element (FE) modeling and simulation of the stator winding of synchronous machines in adjustable degree of detailing
(Master thesis, 2007)The General Purpose 2D Electromagnetic Tool, GP2DET, at Voith Siemens Hydro Power Generation GmbH is a tool developed for simulation and calculation of electrical parameters in large hydro power machines. In this tool, the ... -
30 kW Power Boost System for Drive Trains for Electric Vehicles Based on Supercapacitor Technologies
(Master thesis, 2007)The goal of the master thesis is to design, dimension and construct a power boost system for the drive trains in electric vehicles, utilizing supercapacitor technology. In order to build the system a supercapacitor bank ... -
A Solution for Low Voltage Ride Through of Induction Generators in Wind Farms using Magnetic Energy Recovery Switch
(Master thesis, 2009)Induction generators constitute 30 percent of today’s installed wind power. They are very sensitive to grid voltage disturbances and need retrofitting to enhance their low voltage ride through (LVRT) capability. LVRT of ... -
AC losses in MgB2 superconductors
(Master thesis, 2007)This Master thesis studies losses in superconductors. Losses arise when the superconductor carries alternating current or is placed in an alternating magnetic field. As most power applications involve at least one of the ... -
Aldring av PEX-isolasjon ved påtrykk av HVDC med overlagrede transienter
(Master thesis, 2012)Produksjon av elektrisk kraft fra offshore vindturbiner vil bli en stor utfordring i nær fremtid. Forskningsrådet har i den forbindelse tildelt SINTEF et femårig forskningsprosjekt på HVAC og HVDC undervannskabler for ... -
An investigation on gridconnectable single phase photovoltaic inverters
(Master thesis, 2010)Several inverter topologies for use with power conditioning of photovoltaic modules were investigated with both national and international requirements in mind, as well as also practical challenges and the ability to be ... -
Analysemodell for vedlikehold og reinvesteringer i kraftnett
(Master thesis, 2012)På grunn av den økende alderen på mye av distribusjonsnettet og den økte ressursbruken dette medfører, har nettselskap satt fokus på hvordan vedlikehold og reinvestering kan planlegges og utføres på en best mulig måte. ... -
Analysis of Large Scale Adoption of Electrical Vehicles and Wind Integration in Nord-Trøndelag
(Master thesis, 2012)With the Agreement on Climate Policy (Klimaforliket) signed by the Norwegian government on January 17th 2008, Norway has set a goal to reduce emission caused by transportation with 2.5 4 million tons CO2 equivalents ... -
Analysis of the Slow Floating in Grid Frequency of the Nordic Power System: Impact of Hydraulic System Characteristics
(Master thesis, 2012)This Master's Thesis work deals with the analysis of the observed slow floating in the grid frequency of the Nordic power system. Measurements indicate that the frequency of this floating or oscillation is around 11-17 ... -
Automation of Testing of Polymer HVDC Cables using Controlled Rapid Voltage Surges.
(Master thesis, 2007)This report aims to describe the work done in order to develop a solution for automation of failure detection and performance of rapid voltage surges. The automated system was developed with basis in the experimental circuit ... -
Balance costs for windpower
(Master thesis, 2009)Wind power scheduling is subject to high forecast uncertainty compared to the dominant Norwegian energy source, hydro power. The regulating market, also known as the balance market, is a market solution for optimal operation ... -
Beredskap i regionalnett: En risikobasert tilnærming til lagerhold
(Master thesis, 2008)Det er i denne rapporten utviklet en metodikk for å kartlegge beredskapsbehov for reservekomponenter og utstyr spesielt tilpasset regionale kraftnett. Metoden er anvendt i praksis ved en analyse utført på regionalnettet ... -
Børsteslitasje i vannkraftgeneratorer
(Master thesis, 2007)Diplomoppgaven er en gjennomgang av laboratorieundersøkelser foretatt i løpet av første halvår 2007 knyttet til børsteslitasje i vannkraftgeneratorer. Det er varierende hvorvidt børsteslitasje oppleves som et problem i ... -
Configuration of large offshore wind farms
(Master thesis, 2009)This master thesis is written at the Department of Electric Power Engineering at the Norwegian University of Science and Technology. The work has been carried out at NTNU in Trondheim. The thesis deals with configuration ... -
Control of a Linear Tubular Permanent Magnet Motor
(Master thesis, 2010)In this thesis a linear permanent magnet motor has been examined. The motor is designed by Resonator AS is a prototype. The motor is designed for usage in offshore drilling where maintenance demands are high. This linear ... -
Control of Offshore Passive Platform System Voltage and Frequency through Control of Onshore Back-to-Back Voltage Source Converters
(Master thesis, 2011)This thesis work shows implementation and testing of existing control strategies in a novel offshore passive platform configuration. Control of the platform voltage and frequency is done through control of a shore-based ... -
Control of Power Electronic Converters in Distributed Power Generation Systems: Evaluation of Current Control Structures for Voltage Source Converters operating under Weak Grid Conditions
(Master thesis, 2010)The performance of different current controller structures for Voltage Source Converters (VSC) under weak grid conditions caused by large grid impedance is investigated. The VSC is synchronized to the grid by a Phase Locked ... -
Control of Wave Energy Converter with constrained electric Power Take Off
(Master thesis, 2011)Because of ocean waves' high energy density and substantial, global technical potential wave energy might become a significant contributor to supply the world's increasing energy demand. The nature of ocean waves is strongly ... -
DC Supply in Buildings
(Master thesis, 2014)In this study, existing work, opportunities, standards and essential safety aspects on development of LVDC distribution systems have been considered. It can be summarised that the standard requirements for AC systems also ... -
Design and testing of Flux Switched Permanent Magnet (FSPM) Machines
(Master thesis, 2009)This thesis offers a short overview of the most important stator mounted permanent magnet machines, with a closer look on the FSPM design. A FSPM machine have been built and tested as a generator, to get a better understanding ...