Institutt for elkraftteknikk: Recent submissions
Now showing items 41-60 of 2468
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Investigating Sum of Squares Applicability for Large Signal Stability Certificates in Electrical Systems
(Master thesis, 2024)Denne masteroppgaven fortsetter arbeidet som ble startet i det tilhørende spesialiseringsprosjektet, ved å videre undersøke Sum of Squares metoden som et verktøy for å oppnå stabilitetssertifikater, dvs. Estimasjon av ... -
Power quality monitoring in electric grid integrating offshore wind energy: A review
(Journal article; Peer reviewed, 2023)The rising integration of offshore wind energy into the electric grid provides remarkable opportunities in terms of environmental sustainability and cost efficiency. However, it poses challenges to power quality (PQ) caused ... -
Selective PQD Power Control Strategy for Single-Phase Grid-Following Inverters
(Journal article; Peer reviewed, 2023)This article proposes the selective active, reactive, and distortion (PQD) power control strategy based on proportional-integral (PI) controllers devised in stationary abc -reference frame for single-phase grid-following ... -
Load Flow Analysis of Yggdrasil Power from Shore: Impact of Temperature Distribution in HVAC Subsea Cables
(Bachelor thesis, 2024)Yggdrasil er et nytt oljefelt med planlagt produksjonsstart i 2027. Området er designet for å bli forsynt med kraft fra land gjennom høyspennings vekselstrøms sjøkabler [1]. Tap i sjøkabler er temperaturavhengig og varierer ... -
Automated Railway Single-Line Diagram Generation Using RDS (ISO/IEC 81346)
(Bachelor thesis, 2024)Denne oppgaven utforsker opprettelsen av et automatisert system for å generere enlinjeskjemaer for jernbane ved hjelp av referansebetegnelsessystemet (RDS) i henhold til ISO/IEC 81346-standardene. Prosjektet har som mål å ... -
Coastal Electrification Using Hydrogen Technology and Distribution Grid Flexibility Potential
(Chapter, 2023)This paper aims to analyze the impact of electrifying a coastal fishing fleet on the distribution network. The objective is to address a production and capacity planning challenge by optimizing hydrogen production over the ... -
Modeling and Control of a Single-Phase Grid-Connected Inverter with LCL Filter
(Peer reviewed; Journal article, 2021)The increasing penetration of renewable energy sources is pushing low-voltage electrical grids to become predominantly power electronic-based. Consequently, the design and operation of the related grid-connected converters ... -
Modeling of Saturation and Cross-coupling in a 6-phase IPMSM
(Master thesis, 2024)Nøyaktig modellering av forholdet mellom stator strømmer og flux i en Permanent Magnet Synkronmotor er avgjørende for å oppnå best mulig motorstyring. Presise motormodeller og -parametre er spesielt verdifullt i konteksten ... -
Performance Analysis of Passive Resonance Circuit Breakers in HVDC Systems
(Peer reviewed; Journal article, 2022)High voltage direct current (HVDC) systems have been increasingly employed to provide a connection amongst various energy sources, especially renewable energies. In order to switch the load current in these systems, the ... -
Real-time Simulation and Adaptive Gate Driving of SiC MOSFETs
(Doctoral theses at NTNU;2024:211, Doctoral thesis, 2024) -
Fool Me Once, Shame on Me - A Qualitative Interview Study of Social Engineering Victims
(Journal article; Peer reviewed, 2023)Security breaches still continue to flourish despite of the many technical measures in place. More often than not, the human users get the blame. Social engineering attacks use various manipulation techniques to fool users ... -
Energy storage systems for services provision in offshore wind farms
(Journal article; Peer reviewed, 2024)Offshore wind energy is growing continuously and already represents 12.7% of the total wind energy installed in Europe. However, due to the variable and intermittent characteristics of this source and the corresponding ... -
Power Module Design with Chip-Level Series-Connected SiC MOSFETs
(Chapter, 2024)Series connection of Silicon Carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) is a viable solution to design switches for voltages that are not yet commercially available or limited for single-die ... -
Local energy communities: Member benefits and grid impact under various regulatory frameworks
(Doctoral theses at NTNU;2024:231, Doctoral thesis, 2024)Due to global warming, there is a need to electrify fossil fuel processes and increase the amount of renewable energy. A way to include citizens in this green shift is by making it easier to invest in renewable technology ... -
The Race to Realize Small Modular Reactors: Rapid Deployment of Clean Dispatchable Energy Sources
(Journal article; Peer reviewed, 2024)Small modular reactors (SMRs) are currently touted as the next evolution of nuclear energy. They are a type of nuclear reactor designed to be smaller in size than a traditional reactor. Nevertheless, they are based on the ... -
Simplified steady-state model for probabilistic operational planning of a power system
(Master thesis, 2024)Denne masteroppgaven bruker probabilistisk operasjonell planlegging ved hjelp av en steady state modell med en DC approksimasjon til å finne den mest kostnadseffektive strategien for et 25-bus system. Resultatene fra denne ... -
Real-Time Discrete Electro-Thermal Model of Dual Active Bridge Converter for Photovoltaic Systems
(Journal article; Peer reviewed, 2024)Renewable energy systems have stochastic generation profiles, which affect the performance of the power electronic converters in these systems, especially due to the excessive thermal cycling. In particular, the power ... -
Lightning Impulse Testing in Short Air-Gaps and Memory Effect of Previous Discharges
(Peer reviewed; Journal article, 2024)This paper reports on an observed phenomenon of increasing breakdown voltage while performing standard up and down lightning impulse (LI) testing in short air-gaps with weakly non-uniform field in an enclosed volume. The ... -
Modelling of frequency-coupled power electronics systems: Automated model generation and chirp frequency scanning, applied to single-phase VSCs
(Doctoral theses at NTNU;2024:138, Doctoral thesis, 2024)Power electronics converters play a major role as interface to the AC grid as we transition towards an electric and renewable society. The converters are controlled, modelled and generally understood in time-periodic ... -
Electro-Thermal Homogenization of HTS Stacks and Roebel Cables for Machine Applications
(Journal article; Peer reviewed, 2024)This paper presents a homogenized electro-thermal model for high-temperature superconductor (HTS) stacks made of multiple REBCO tapes, which reduces the computational complexity of their thermal analysis. The electromagnetic ...