Blar i Institutt for elkraftteknikk på tittel
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Impact of Virtual Oscillator Control on the instantaneous properties of VSC output voltage in distorted island grids
(Chapter, 2019)This paper investigates the instantaneous properties of voltage and frequency of Voltage Source Converters (VSCs) when they are controlled by Virtual Oscillator Controllers (VOC) in a distorted island grid. Under time-averaged ... -
Impact of Zero Energy Buildings on the Power System: A study of load profiles, flexibility and system investments
(Doctoral theses at NTNU;2017:35, Doctoral thesis, 2017)This thesis investigates the impacts of introducing energy efficient and electricity generating buildings, called ZEBs, into a power system with a high share of renewables. Detailed knowledge of electricity demand is ... -
Impact on Wind Turbine Systems from Transient Fluctuations in Offshore Utility Grids
(Master thesis, 2009)Gas turbines in offshore power systems contribute to about 23% of Norway’s total emissions of CO2. One method for reducing these emissions could be the addition of wind turbines to the offshore utility grids. Power from ... -
Impacts of Interconnecting the Wind Farm Projects within the Dogger Bank Zone: A Technical-Economical Evaluation of the Impact of Increased Wind Farm Connection Reliability
(Master thesis, 2013)The Dogger Bank zone, which has been awarded to Forewind for development, is planned as the world s largest offshore wind farm with an agreed target of 9 GW installed capacity. Due to the size of the wind farm it will be ... -
Impedance computation for power electronic converters with Hilbert transform
(Chapter, 2017)The Hilbert transform (HT) is widely used in signal processing and it has been found as a good tool to understand some physical phenomena in electrical systems. This paper presents a methodology to derive the input impedance ... -
Impedance Modeling and Stability Analysis of Grid-tied Universal Droop Control Inverter
(Chapter; Peer reviewed, 2019)This paper presents an impedance modeling and small-signal stability analysis of the grid-tied Universal Droop Control (UDC) inverter. The -impedance model of the UDC inverter is derived analytically and, which is verified ... -
Impedance Modelling and Stability Analysis of Virtual Synchronous Machine-based Wind Energy Conversion System
(Master thesis, 2022)Ettersom antallet kraftelektronikkomformere øker på grunn av økningen i variabel fornybar energi, har det en betydelig innvirkning på dynamikken og stabiliteten til kraftsystemer. Siden kraftsystemer tradisjonelt domineres ... -
Impedance scanning with chirps for single-phase converters
(Chapter, 2022)Impedance scanning of single-phase AC-DC converters is challenging due to frequency couplings, which map one injection frequency to a multiple of output frequencies. Single-tone injections are often preferred over wideband ... -
Impedance-Based Stability Analysis and Adaptive Control of Grid-Connected Converter
(Master thesis, 2020)De siste tiårene har andelen av kraftelektronikk tilkoblet strømnettet økt drastisk, og denne trenden er for- ventet å fortsette i årene som kommer. Hovedårsaken til er dette er den økte integrasjonen av fornybare ... -
Implementation and laboratory verification of method utilizing phase and neutral quantities for detection and location of low-current earth faults in resonant grounded networks
(Peer reviewed; Journal article, 2023)Earth faults is a challenging fault type to locate in resonant grounded networks due to their naturally low fault current, and the problem increases with an increased fault impedance. This paper describes the detailed ... -
Implementation of Permanent Magnet Motors in Electric Vehicles
(Master thesis, 2008)This thesis has studied permanent magnet motors in electric vehicles (EVs) under the assumption that they are tractable due to a low weight and high compactness. The implementation has been investigated through a case ... -
Implementering av energi- og effektstyring av forbrukslaster
(Master thesis, 2012)Denne hovedoppgaven tar for seg avansert måle- og styresystem (AMS) og innføringen av strupefunksjonen som skal kunne bryte og strupe effektuttaket i det enkelte målepunkt for å redusere effektuttaket ved perioder med ... -
Implementering av logisk styrt automatikk i 22kV distribusjonsnett
(Master thesis, 2018)I dag utføres feil- og avbruddshåndtering i distribusjonsnettet stort sett ved manuell betjening av brytere som fører til langvarige avbrudd. KILE-ordningen gir nettselskap incentiv til å utføre tiltak for å redusere antall, ... -
Implementering av relévern i ATPDraw
(Master thesis, 2012)Rapporten omhandlar utviklinga av relévernmodellar for bruk i ATPDraw. ATPDraw er eit simuleringsprogram for elektriske kretsar, og inneheld per i dag ikkje modellar av relévern.Fyrste del av rapporten tek for seg ... -
Implementing flexibility into energy planning models : Soft-linking of a high- level energy planning model and a short-term operational model.
(Journal article; Peer reviewed, 2020)The operation of electric and heat grids alike is complicated due to the dynamic demand, with the increasing penetration of renewable energy sources adding to the problem. In order to improve the integration of variable ... -
Implementing Hydropower Scheduling in a European Expansion Planning Model
(Master thesis, 2014)This Master s thesis proposes a method for implementing an enhanced hydropower planning formulation in a long-term expansion planning model. The motivation for this work is the important role that hydropower plays in a ... -
Implementing Hydropower Scheduling in a European Expansion Planning Model
(Journal article; Peer reviewed, 2014)A method for implementing an enhanced hydropower planning formulation in a long-term expansion planning model is proposed. The methodological framework involves assigning hydropower generation a marginal cost through water ... -
Implementing LSTM machine learning in long-term hydropower scheduling
(Master thesis, 2023)Energiforbruket øker raskt globalt, og med miljøkrisen erstatter stadig flere mennesker fossile brensler med fornybare energikilder. De nye fornybare energikildene er ikke like fleksible og pålitelige som de gamle fossile ... -
Improved SiC MOSFET SPICE model to avoid convergence errors
(Peer reviewed; Journal article, 2020)This paper presents improvements to a SPICE model for a commercially available SiC MOSFET to avoid convergence errors while still providing reliable simulation results. Functionality in the internal part of the model that ... -
Improved Version of Energy Efficient Motor for Shell Eco Marathon: Half Weight with Higher Efficiency
(Master thesis, 2011)The goal of the thesis is to analyze an existing Axial Flux Permanent Magnet motor used for Shell Eco Marathon from the Norwegian University of Science and Technology (NTNU). The existing machine has been analysed and ...