Blar i Institutt for elkraftteknikk på forfatter "Norges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for elkraftteknikk"
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Analysis and Control of a Modular Series ConnectedConverter for a Transformerless Offshore Wind Turbine
Gjerde, Sverre Skalleberg (Doktoravhandlinger ved NTNU, 1503-8181; 2013:279, Doctoral thesis, 2013)A modular series connected converter consisting of N number of converter units, suitable for a high power, high voltage transformerless offshore wind turbine is analyzed in this thesis. The main objective is to verify the ... -
Analysis of a Multi-Infeed HVDC System in the Norwegian Power System
Holthe, Alexander Håkan George (Master thesis, 2014)The impact of a new Modular Multi-Level Converter (MMC) on a Line Commutated Converter (LCC) in the same AC-grid, representing the future system of NordLink and NorNed is investigated. This multi-infeed HVDC system is ... -
Analysis of a Novel Coil Design for Axial Flux Machines
Lomheim, Sigbjørn (Master thesis, 2013)A novel coil design for permanent magnet axial flux machines is presented. An analysis of its performance regarding winding layout, cooling capability, cogging torque, and back-EMF is conducted. Different manufacturing and ... -
Analysis of CO2 heat pump for low energy residential building
Thoreby, Aleksander Olsen (Master thesis, 2013)In low energy buildings heat loss is reduced through energy-saving measureslike heat recovery of ventilation air and a well-insulated buildingenvelope. Consequently the demand for domestic hot water often makesup a larger ... -
Analysis of IEEE Power System Stabilizer Models
Hammer, Anders (Master thesis, 2011)Student: Anders HammerSupervisor: Kjetil UhlenContact: Daniel MotaCollaboration with: Voith HydroProblem descriptionIEEE (Institute of Electrical and Electronics Engineers) presented in 2005 a new PSS structure named ... -
Analysis of Large Scale Adoption of Electrical Vehicles and Wind Integration in Nord-Trøndelag
Vatne, Åshild (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 Large Scale Integration of Electric Vehicles in Nord-Trøndelag
Sagosen, Øystein (Master thesis, 2013)In recent years, the shift in attitude towards climate and CO2 emissions has acceleratedthe sale of electric and hybrid electric vehicles in Norway. Predictionsindicate that Norway may surpass 200,000 chargeable vehicles ... -
Analysis of Passive Cooling And Heating of Ventilation Air in a Buried Intake Culvert
Slobodinski, Daniel Løchen (Master thesis, 2013)Passive ventilation is becoming increasingly important due to more focus on limiting electricity for ventilation purposes. Underground culverts may be utilized to achieve preheating or precooling of the intake air. Therefore ... -
Analysis of Slow Frequency Variations in the Nordic Power System
Oftebro, Anja (Master thesis, 2014)Slow oscillations in system frequency, with a periodic time of 60-90 seconds and amplitude of 50 mHz, has been observed in the Nordic grid. As a result the frequency is outside the limit of 50 +/- 0,1 Hz more often. It is ... -
Analysis of the Slow Floating in Grid Frequency of the Nordic Power System: Impact of Hydraulic System Characteristics
Grøtterud, Magnus (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 ... -
Analyzing and Testing of New Silicon Carbide Components for Down Hole Oil Applications
Yang, Xiaoxia (Master thesis, 2014)High temperature power converter becomes possible due to the development of SiC power technology. The inherent properties of wide bandwidth, high breakdown electrical field and high thermal conductivity give commercially ... -
Application of AC Superconducting Windings in Large PM Synchronous Generators for Wind Power
Tiwari, Raghbendra (Master thesis, 2012)Superconductors are known for carrying very high current density without any loss of energy. This characteristic helps to achieve very high power capacity with compact size of machine. In application of superconductors, ... -
Assessing the Environmental Costs and Benefits of Households Electricity Consumption Management
Segtnan, Ida Lund (Master thesis, 2011)In this study the environmental costs and benefits of smart metering technology systems installed in households in Norway have been assessed. Smart metering technology systems enable mechanisms to manage electricity ... -
Assessing the Life Cycle Environmental Impacts of Offshore Wind Power Generation and Power Transmission in the North Sea
Birkeland, Christine (Master thesis, 2011)An integrated approach to climate and energy policy is required to meet the challenges associated with climate changes caused by anthropogenic emissions. At the same time, the demand for electricity is increasing. Wind ... -
Automation of Testing of Polymer HVDC Cables using Controlled Rapid Voltage Surges.
Karlsen, Thomas (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 ... -
Axial flux machines with super high torque density or super high efficiency: Design Optimization of an Axial Flux Permanent Magnet Machine Using Genetic Optimization
Veflingstad, Thomas (Master thesis, 2014)An analytical model of an axial flux permanent magnet machine has been made. The model were based on a 2-D magnetic circuit calculated at average length assuming a constant magnetic and electric loading. The model were ... -
Balance costs for windpower
Skaflestad, Stig (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 ... -
Balancing Costs for Wind Power
Larssen, Marit (Master thesis, 2007)Nordel is the organisation for the Nordel synchronous system, held by the Nordic Transmission System Operators. In their work to harmonise the Nordic electricity markets they have agreed upon harmonising the Nordic balance ... -
Balancing of Offshore Wind Power in Mid-Norway: Implementation of a load frequency control scheme for handling secondary control challenges caused by wind power
Gleditsch, Morten (Master thesis, 2009)In order to comply with governmentally announced greenhouse gas emission reductions goals and to consolidate an independent and stable electric power and energy supply, Norway must increase its installed renewable energy ... -
Belastbarhet for roterende frekvensomformere for jernbanen i Norge
Klingan, Ole Johan Ekeli (Master thesis, 2014)I denne oppgaven har det blitt beregnet temperaturøkning i en enfasegenerator med dempevikling ved overlast. Generatoren er en del av en roterende frekvensomformer av typen Q48/Q49 som brukes av Jernbaneverket for å forsyne ...