Blar i Institutt for elkraftteknikk på tittel
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Challenges of the future Danish energy scenario with 50 % wind integration and how electric vehicles adaptive charging can help to mitigate.
(Master thesis, 2015)Denmark aims for a 50% wind integration in 2020. In the current scenario, where wind represents around 34% of domestic consumption, mothballing of conventional power plants and heavy dependency in interconnection lines is ... -
Challenges on drive circuit design for series-connected SiC power transistors
(Journal article; Peer reviewed, 2017)The breakdown voltages of the currently available 1.2 and 1.7-kV classes Silicon Carbide (SiC) transistors are not sufficient to operate under medium blocking voltages. On the other hand, the fabrication yields of the ... -
Challenging Defects of High Voltage Insulation Systems
(Chapter, 2019)The primary function of a high voltage insulation system is to prevent the flow of electric current between oppositely charged conductors, facilitate heat transportation and provide mechanical support throughout a long ... -
Changes in the European energy system, resulting from increase in Norwegian transmission capacity and hydropower development
(Master thesis, 2019)Denne masteroppgaven har analysert det Europeiske energisystemet. Analysen har hatt hovedfokus på utvikling av mer vannkraft i Norge, utvikling av mer vindkraft i Norge og Storbritannia og økt overføringskapasitet fra Norge ... -
Characteristics of Switching Arc in Ultrahigh-pressure Nitrogen
(Doctoral thesis, 2020)An increasing number of wind farms and mining operations located far off the coast will lead to the development of offshore substations. To avoid the large costs associated with platforms and floaters, such a substation ... -
Characterization and Analysis of Photovoltaic Modules and the Solar Resource Based on In-Situ Measurements in Southern Norway
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:350, Doctoral thesis, 2012)In broad terms, this thesis is concerned with outdoor testing of individual photovoltaic (PV) modules and characterization of the solar resource in Southern Norway. The work aims to evaluate the irradiance and temperature ... -
Characterization of a novel counter-rotating twin harmonic PM machine
(Chapter, 2023)Most machine topologies have two-ports, with one set of electrical connections and one mechanical shaft. Three-port machines having two rotors and mechanical shafts are able to drive two mechanical loads using one stator ... -
Characterization of body diodes in the-state-of-the-art SiC FETs-Are they good enough as freewheeling diodes?
(Chapter, 2018)This paper investigates the switching phenomenon of body diodes in the state-of-the-art discrete SiC FETs. A comparative performance evaluation of the body diodes in planar and double-trench SiC MOS-FETs, and trench cascode ... -
Characterization of Insulation Materials for HVDC Subsea Connectors - Evaluation of Measurement Methods for Surface Conductivity
(Master thesis, 2015)The focus of this work has been on characterization methods for the surface conductivity of insulation materials in HVDC subsea connectors. Having a proper characterization is important when selecting the most suited design ... -
Characterization of Ultrahigh Pressure Nitrogen Arc Using Black Box Arc Model
(Journal article; Peer reviewed, 2023)In this paper, the effect of filling pressure on the black box arc parameters of nitrogen arc is reported using Mayr arc model. The arc current is approximately 130 A at 190 Hz. The filling pressure is varied at absolute ... -
Characterizing flexibility in power markets and systems
(Peer reviewed; Journal article, 2022)The increasing share of variable renewable energy sources creates a need for flexibility resources in the power system operations. This paper presents suggestions for characterizing flexibility, including dimensions of ... -
Characterizing the energy flexibility of buildings and districts
(Journal article; Peer reviewed, 2018)The large penetration rate of renewable energy sources leads to challenges in planning and controlling the energy production, transmission, and distribution in power systems. A potential solution is found in a paradigm ... -
Charge accumulation on slightly conductive barrier systems and its effect on breakdown voltage in an air insulated rod plane arrangement
(Chapter, 2020)The barrier effect has been known since the 1930's. It is of great importance in the field of high voltage engineering as the breakdown voltage of an electrode arrangement can be increased significantly when dielectric ... -
Charging flexibility from electric vehicles via autonomous chargers in a workplace
(Master thesis, 2021)As a part of the ongoing project Autonomously Controlled Distributed Chargers (ACDC), This thesis have designed an autonomous charging controller, with a distributed control architecture incorporating virtual aggregator ... -
Chemical Looping Combustion Cold Flow Model commissioning and performance evaluation
(Master thesis, 2010)SINTEF and NTNU are planning to build a 150 kWth Chemical Looping Combustion (CLC) reactor system. This is new technology and the CLC reactor system is going to be one of the largest of its kind in the world. The technology ... -
CINELDI-rapport 01:2020 - Scenarier for fremtidens elektriske distribusjonsnett anno 2030-2040
(SINTEF Rapport;, Research report, 2020)Rapporten beskriver fire hovedscenarier for fremtidens elektriske distribusjonsnett anno 2030- 2040: • Automatisert nett • Fleksibelt og intelligent nett • Nettet som back-up • Business as usual. De fire hovedscenariene ... -
CINELDI-report 01:2019 - Driving forces for intelligent electricity distribution system innovation
(SINTEF Rapport;, Research report, 2019) -
CINELDI-report 01:2019 - Driving forces for intelligent electricity distribution system innovation
(SINTEF Rapport;, Research report, 2019) -
Classification and analysis of impact on small-signal dynamics and stability from expansion of VSC-HVDC systems to multi-terminal HVDC grids
(Chapter, 2017)This paper presents a structured approach for analysing the effect of HVDC transmission system expansion on the small signal dynamics. The methodology decomposes the expansion of the system into a sequence of steps and ... -
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 ...