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Frequency Converter Solutions and Control Methods for Varible Speed Operation of Pumped Storage Plants
(Doctoral theses at NTNU;2023:399, Doctoral thesis, 2023)Pumped storage hydropower plants (PSHP) are widely used for bulk energy storage around the world. The variable speed operation of these plants further enables their capability to regulate the power in pump mode as well. ... -
Frequency Domain Modelling for Assessment of Hilbert and SOGI Based Single-Phase Synchronisation
(Chapter, 2019)Two different single-phase synchronisation schemes based on orthogonal system generation (OSG) are modelled in the linear, time-periodic framework. The frequency adaptive Hilbert phase locked loop (PLL) and the frequency-fixed ... -
Frequency Response Presentation of Power System Components
(Master thesis, 2015)This master thesis presents a method for stability analysis. The dynamics of an electric system are described through frequency dependent impedances and admittances. This is presented with the basis of an electric traction ... -
Frequency support by wave farms in low inertia power systems
(Peer reviewed; Journal article, 2023)New ancillary services and additional requirements for the grid integration of variable renewable energy (VRE) are being defined worldwide, in response to the technical challenges caused by increasing levels of VRE utilization ... -
Frequency-dependent cable modelling for small-signal stability analysis of VSC-HVDC systems
(Journal article; Peer reviewed, 2016)State-of-the-art time-domain models of power cables account for the frequency dependency of physical parameters to enable accurate transient simulations of high-voltage transmission schemes. Owing to their formulation, ... -
Fuel Cell Assisted PhotoVoltaic Power Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:158, Doctoral thesis, 2012)Distributed generation (DG) systems as local power sources have great potential to contribute toward energy sustainability, energy efficiency and supply reliability. This thesis deals with DGs that use solar as primary ... -
Fuel Savings Obtained by Replacing Traditional AC-distribution Systems onboard Vessels with DC-distribution Systems
(Master thesis, 2013)Today most of the diesel-electric systems on board ships are based on an AC-distribution of the generated power. The electric power is fed directly from the synchronous generators into an AC-grid, where it is distributed ... -
Full Speed Range Sensorless IPMSM Drive Enhanced with Online Parameter Identification
(Chapter, 2021)This paper aims to combine the state-of-the-art parameter-adaptation and state-estimation techniques to realize an adaptive and sensorless interior permanent magnet synchronous machine (IPMSM) drive that offers robust ... -
Full Speed Range Sensorless IPMSM Drive Enhanced with Online Parameter Identification
(Chapter, 2021)This paper aims to combine the state-of-the-art parameter-adaptation and state-estimation techniques to realize an adaptive and sensorless interior permanent magnet synchronous machine (IPMSM) drive that offers robust ... -
Fundamental Multi-Product Price Forecasting in Power Markets
(SINTEF Rapport;, Research report, 2019)This report has been prepared in the first phase of the project 'Pricing Balancing Services in the Future Nordic Power Market1, and its purpose is two-fold. First, a review on expected future trends in European power markets ... -
Fundamentals and recent developments in stochastic unit commitment
(Journal article; Peer reviewed, 2019)Optimal scheduling of power generating units must take into account possibilities of forecast errors and equipment failure. The stochastic unit commitment problem addresses scheduling of generating units under uncertainty. ... -
Fundamentals of Grid Connected Photo-Voltaic Power Electronic Converter Design
(Master thesis, 2007)In this master thesis the basic theory of grid connected photo-voltaic systems is explained, giving an introduction to the different aspects of system design. Starting with a look at the standards concerning grid connection ... -
Funksjonalitet for intelligente veilyssystemer
(Master thesis, 2013)Denne rapporten er et resultat av en masteroppgave våren 2013 ved NTNU omhandlende kartlegging av dagens driftssituasjon og en kartlegging av hva som er tilgjengelig på markedet av styresystem til veibelysning. Installering ... -
Funksjonstesting av relévern i digitale transformatorstasjoner
(Master thesis, 2019)I det moderne samfunn blir folk stadig mer avhengige av strømforsyning fra det elektriske kraftnettet. Transformatorstasjoner er en sentral del av kraftnettet, da de tillater transformering mellom spenningsnivåer og er ... -
Future Design of Subsea High Voltage Cables for Offshore Renewables - Effect of Static Mechanical Stresses on the Insulation Lifetime
(Master thesis, 2022)I dag er normalt en våtdesign kabel klassifisert for opptil 36 kV. I det siste har det vært en stor interesse for å øke spenningen slik at de kan brukes til inter-array forbindelser i vindparker til havs hvor de utsettes ... -
Future Design of Subsea High Voltage Cables for Offshore Renewables - Water tree growth from contaminants of oxidized polyethylene
(Master thesis, 2023)Høyspent sjøkabel er en nøkkelkomponent i offshore energiproduksjon fra vind eller sol. I kablene som kobles mellom slike installasjoner er det ikke ønskelig med en vanntettende barriere av bly. Dette er både av hensyn til ... -
Future Norwegian Power Surplus and the Effect of Interconnections to the Continent
(Master thesis, 2011)AbstractEU goals and policies have significant consequences for Norway affiliated through the EEA-agreement. Through the EU Climate Package, EU aims to reduce total GHG emissions in all EU member states 20% and increase ... -
Future Operation and Control of Power Systems-Laboratory Models and Real-Time Simulation
(Master thesis, 2022)Abstract Recently, growing electrical energy demand and increasing integration of renewable energy sources in power system have led to new challenges for the transmission system operators and on the network planning step. ... -
Future Operational Regimes of Bulk Power Generation in The Era of Global Energy Transition: Grid Codes, Challenges and Open Issues
(Chapter, 2020)This paper explores the effects of the ongoing energy transition on the classical bulk power generation. The rapid increase in renewable penetration changes the role of grid-connected generators significantly. Large machines ... -
Future Solar Photovoltaic and Electro Mobility Scenarios for Garmisch-Partenkirchen
(Master thesis, 2014)Ever since the German Renewable Energy Act became effective in 2000, it has been a steady increase of renewable energy based electricity production in Germany. The largest share of this growth originates from wind and solar ...