Blar i Institutt for elkraftteknikk på tittel
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Optimization of battery energy storage system: A case study for an electric vehicle fast-charging station
(Master thesis, 2020)Stadig økende andel elbiler og ladeeffekt, samt utbygging av hurtigladestasjoner, skaper nye utfordringer, blant annet økte effekttopper og mer varierende effekt. Med økende ladeeffekt vil ladetiden gå ned, og kombinasjonen ... -
Optimization of Capacitor for Sub Sea Motor Drive Application
(Master thesis, 2010)Optimization of Capacitor for Sub Sea Motor Drive ApplicationStudent: Umesh ThapaSupervisor: Prof. Lars NorumContact: Espen HauganProblem DescriptionSubsea drives are very large and expensive equipments. Normally subsea ... -
Optimization of Energy Storage for Frequency Control in Autonomous AC Power Systems – Frameworks for Planning and Operation
(Doctoral theses at NTNU;2023:144, Doctoral thesis, 2023)AC power systems have been designed to balance active power from the generation side, adopting technologies that offer three important properties: dispatch capability, ability to participate in frequency control, and large ... -
Optimization of Hybrid Power Plant
(Master thesis, 2023)Det har vært en betydelig utvikling av variabel fornybar energi de siste årene, og det forventes at denne utviklingen øker i fremtiden. I forbindelse med dette skiftet er det et økt behov for fleksible energisystemer, og ... -
Optimization of operational cost for a grid-supporting PV system with battery storage
(Journal article, 2016)Coupling an energy storage to a photovoltaic (PV) system not only increases the self-consumption but also solves the over-voltage issues if the cycling of the storage is properly controlled. Whatever the application the ... -
Optimization of the Energy Management System of a Solar Car
(Master thesis, 2023)The World Solar Challenge er et solcellebilkonkurranse der fullstendig selvforsynte, nettfrakoblede, solcelledrevne elektriske kjøretøy kjører om kapp p˚a tvers av Australia, kun hjulpet av et energilagringssystem med lav ... -
Optimization of Zero-Emission Power Devices for an Electric Aircraft
(Master thesis, 2021)For å nå klimamålene om karbonnøytralitet innen 2050, må også luftfartssektoren erstatte fossilt drivstoff med mer bærekraftige alternativer. Flyindustrien viser spesiell interesse for hydrogen på grunn av grunnstoffets ... -
Optimized Control of Variable Speed Hydropower for Provision of Fast Frequency Reserves
(Peer reviewed; Journal article, 2020)This paper deals with the design of controllers for variable speed hydropower (VSHP) plants with the objective of optimize the plants performance. The control objectives imply enabling fast responses to frequency deviations ... -
Optimized Design of Multi-MHz Frequency Isolated Auxiliary Power Supply for Gate Drivers in Medium-Voltage Converters
(Peer reviewed; Journal article, 2020)This article presents the design and optimization of a suitable topology for an isolated dc–dc auxiliary power supply with high isolation voltage and low coupling capacitance. The converter consists of a GaN HEMT inverter ... -
Optimized Exploitation of Ancillary Services: Compensation of Reactive, Unbalance and Harmonic Currents Based on Particle Swarm Optimization
(Peer reviewed; Journal article, 2021)Taking into account the growth of distributed generation systems in low-voltage networks, it is important to fully exploit the energy resources and their embedded power converter. Thus, this paper proposes an optimization ... -
Optimizing HVDC Grid Expansion and Control for Enhancing DC Stability
(Chapter, 2018)This paper analyzes the problem of the expansion of an offshore HVDC network. We assess which new HVDC link deployment ensures the highest stabilization of the DC voltage under transient conditions, in the worst-case ... -
Optimizing hydrogen pathways using Norwegian energy resources dominated by offshore wind
(Master thesis, 2023)Kraftsystemet står overfor flere utfordringer. Klimarisen krever umiddelbar handling for å redusere klimagassutslippene. Samtidig pågår det også en global energikrise, som har økt behovet for krafttilførsel i det Europeiske ... -
Optimizing weekly hydropower scheduling in a future power system - Development of a deterministic short-term hydro-thermal scheduling model
(Master thesis, 2018)In a future power system with high penetration of intermittent renewable energy sources, it will be necessary to adapt to their changes quickly to ensure system stability. In the European system, the Nordic hydro region ... -
Optimum Configuration of the Dogger Bank Reference Wind Farm Grid with Consideration for Reliability
(Master thesis, 2016)Offshore wind energy has become a major part of the European energy mix, and new and improved technology enables the construction of wind farms with larger installed capacity. One of these large scale projects that has ... -
Organiske forurensninger i HVDC PEX-isolasjon
(Master thesis, 2014)Kryssbundet polyetylen (PEX, eng. XLPE) er et vanlig brukt elektrisk isolasjonsmateriale for høyspenningskabler. Under produksjonsprosessen av isolasjonsmateriale eller kabelisolasjon kan såkalte organiske forurensninger ... -
Oscillatory Convection Onset in a Porous Rectangle with Non-analytical Corners
(Peer reviewed; Journal article, 2020)The analytical theory on Darcy–Bénard convection is dominated by normal-mode approaches, which essentially reduce the spatial order from four to two. This paper goes beyond the normal-mode paradigm of convection onset in ... -
Overoppheting av mellomspennings PEX-kabelskjøter - Termisk aldring karakterisert ved PD-målinger
(Master thesis, 2017)En betydelig andel av det norske mellomspennings kabeldistribusjonsnettet har passert den forventede levetiden på 30 år. Driftserfaringer viser at kabeltilbehør som f.eks. kabelskjøter har en kortere forventet levetid enn ... -
Overslagskarakteristikk for Isolatorer i Distribusjonsnett
(Master thesis, 2019) -
Overspenningsbeskyttelse av instrumenteringsanlegg i vassdrag
(Bachelor thesis, 2021)Instrumenteringsanlegg i vassdrag har vist seg å være sårbare for overspenninger. Denne oppgaven undersøker hvorfor, og forsøker å gi svar på hvordan elektriske anlegg kan bygges robuste i forhold til å håndtere overspenninger. ... -
An overview of bidirectional electric vehicles charging system as a Vehicle to Anything (V2X) under Cyber–Physical Power System (CPPS)
(Peer reviewed; Journal article, 2022)Nowadays, EVs are rapidly increasing in popularity, and are accepted as the vehicles of the future all over the world. The most important components are their battery and charging systems. The energy capacity of EVs’ ...