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Closest security boundary for improving oscillation damping through generation redispatch using eigenvalue sensitivities
(Journal article; Peer reviewed, 2018)This paper proposes an algorithm for determining a minimum generation redispatch capable of moving specific oscillation modes to the closest small-signal security boundary that guarantees them a desired damping factor. The ... -
Closing the loop: Tracking stocks and flows of steel from the end of useful life to re-melting
(Master thesis, 2014)Recycling steel scrap from different stages in the life cycle is an important input to secondary steel production and manufacturing. While flows and losses from pre-consumer processes are well known, there are considerable ... -
Clustering methods assessment for investment in zero emission neighborhoods’ energy system
(Peer reviewed; Journal article, 2020)This paper investigates the use of clustering in the context of designing the energy system of Zero Emission Neighborhoods (ZEN). ZENs are neighborhoods who aim to have net zero emissions during their lifetime. While ... -
Clustering of AMS-data
(Master thesis, 2020)Utrullingen av AMS (smarte strømmålere) man ser i dag, både i Norge og globalt, gjør store mengder strømdata (AMS-data) tilgjengelig. På disse AMS-dataene kan man bruke Big-Data teknikker, og clustering er en teknikk mye ... -
Co-Simulation Model for Optimal Wind-Hydro Coordination Using Wind Farm Control Dynamics: A Case Study of a Hybrid Wind and Hydro Plant System
(Master thesis, 2023)Den økende andelen variabel fornybar energi i kraftsystemene medfører utfordringer for reguleringsmyndigheter, nettoperatører og energiprodusenter. Variable energikilder har begrenset fleksibilitet i driften sin, da de er ... -
Co-Simulation of an IPMSM Drive Using Comsol and Simulink
(Master thesis, 2021)Endelig elementmetoder (FEM) er standardtilnærmingen for å vurdere ytelse og design til elektriske maskiner. Permanent-magnet-synkron-motorer med innfelte magneter (IPMSM) øker i popularitet innen trekkapplikasjoner, romfart ... -
Co-Simulation of Optimal EVSE and Techno-Economic System Design Models for Electrified Fleets
(Peer reviewed; Journal article, 2022)As the transition to electric mobility is expanding at a rapid pace, operationally feasible and economically viable charging infrastructure is needed to support electrified fleets. This paper presents a co-simulation of ... -
CO2-kjølesystemer for data-/telesentraler
(Master thesis, 2013)Kjøling av datasentraler står for en økende del av verdens elektrisitetsforbruk. I senere år har fokus dreid seg fra utelukkende å være på driftssikkerhet til å også omfatte energieffektivitet. Mer energiintensivt IT-utstyr, ... -
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 ... -
Combining analytical power system reliability assessment methods with Monte Carlo simulation
(Master thesis, 2019)Denne masteroppgaven undersøker fagfeltet pålitelighetsanalyse av kraftsystemer gjennom to deler, et litteraturstudie om det nye innen metoder for pålitelighetsanalyse av kraftsystemer, og en implementasjon av to hybridmetoder ... -
Common and differential mode of dc-bias in three-phase power transformers
(Peer reviewed; Journal article, 2022)Dc magnetization due to the geomagnetically induced currents (GICs) and HVDC (High Voltage Direct Current) systems may cause core saturation and result in serious destruction in the transformer performance as well as the ... -
Communication Network for Internal Monitoring and Control in Multilevel Power Electronics Converter
(Doctoral thesis at NTNU;2014:354, Doctoral thesis, 2014)The design process of complex power electronics converters, such as the multilevel converter, can be simplified with the concept of Power Electronic Building Blocks (PEBBs). PEBB is a fully integrated hardware with ... -
Communication of Sustainability Performance of Large Events
(Master thesis, 2013)Businesses who acknowledge that their activities have potential impacts on the environment and society as well as the economy, are increasingly choosing to commu- nicate their performance in sustainability reports. Large ... -
Comparative Assessment of Supervised Learning ANN Controllers for Grid-Connected VSC System
(Chapter, 2022)The widely used PI-controller imposes certain performance limitations when used for the grid-connected VSC systems. Model predictive controllers (MPC) can eliminate these inherent issues of PI-controller but in trade-off ... -
Comparative evaluation of a commercially available 1.2 kV SiC MOSFET module and a 1.2 kV Si IGBT module
(Chapter, 2016)In this paper, a comparative performance evaluation of a 1.2 kV SiC MOSFET module and a 1.2 kV Si IGBT module is carried out under a series of different conditions such as similar dv/dt, di/dt, voltage overshoot, current ... -
Comparative Evaluation of AC and DC Power Distribution Systems for Underwater Vehicles Based on Multiobjective Optimization Techniques
(Peer reviewed; Journal article, 2020)This paper presents a multiobjective optimization technique for the submarine cables of high-power remotely operated vehicles (ROVs). A detailed design flowchart with integrated electrical and mechanical designs of the ROV ... -
Comparative study on various dielectric barriers and their effect on breakdown voltage
(Journal article; Peer reviewed, 2018)Non-pressurised air is extensively used as basic insulation medium in high-voltage equipment. Unfortunately, an inherent property of air-insulated design is that the system tends to become physically large. On the other ... -
Comparing Optimization Strategies in Local Electricity Markets Applied to Large Industrial End-users in Norway and Residential Buildings in the UK
(Master thesis, 2020)Den økende bruken av distribuerte og fornybare energikilder, i kombinasjon med økende bruk av kraftkrevende enheter, skaper nye utfordringer for dagens kraftsystem. Dette inkluderer utfordninger knyttet til forsyning og ... -
Comparing the Surface- and Interior Permanent Magnet Machine with Concentrated Windings for High Dynamic Applications
(Master thesis, 2017)This paper will compare the surface permanent magnet (SPM) machine to the interior permanent magnet (IPM) machine with fractional slot concentrated winding (FSCW). Key features is to achieve high field weakening with low ... -
Comparison between Si MOSFETs and GaN HEMTs with special emphasis on low load problems occuring in the LLC resonant converter
(Master thesis, 2019)Det stilles store krav til likerettere brukt til å forsyne datasentere med kraft. Et av kravene er høy virkningsgrad. En av de vanligste topologiene brukt til dette formålet består av en PFC-likeretter, for å få sinusformet ...