Blar i NTNU Open på forfatter "Molinas, Marta"
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Grid Integration of the Wave Energy Converter Bolt2: Control of the Grid Side Converter with Energy Storage
Ulvin, Johannes Christopher (Master thesis, 2012)This thesis is written in cooperation with Fred Olsen's Wave Energy Project Bolt2 which is a Wave Energy Converter (WEC) recently deployed outside of Falmouth Bay in the UK. After the initial phases of testing, the device ... -
Impedance-based Methods for Small-signal Analysis of Power Electronics Dominated Systems
Rygg, Atle (Doctoral theses at NTNU;2018:292, Doctoral thesis, 2018)Kraftsystemet er i endring - vi manglar metodar for å analysere det! Kraftnettet har tradisjonelt hatt ein struktur med store produksjonseiningar tilkopla høgspentnettet, og rollen til nettet har vore å føre denne ... -
Instantaneous Frequency Identification in Microgrids Through Adaptive Data Analysis
Westad, Erlend (Master thesis, 2020)Den økende integreringen av kraftelektroniske komponenter har sammen med mer distribuert generering av energi ført til at kraftsystemet er mer usatt for harmonisk forurensning. Isolerte systemer typisk kategorisert av lavt ... -
Integration of Mobile Physiological Sensors For Use in Pilot Experiments
Abelson, Filip Gornitzka (Master thesis, 2021)Denne oppgaven undersøker hvordan blikksporingsteknologi kan bli brukt som et forskningsverktøy i piloteksperimenter. En skjermbasert ideeringsstudie (N = 24), som bygger videre på eksperimentet av Goucher-Lambert et al. ... -
Investigating G-parameters Modelling of Power Electronc Devices
Jakobsen, Sigurd Hofsmo (Master thesis, 2013)In a world with an ever increasing population, the demand for energy is constantly on the rise. Most countries also agree, that a sustainable development should be ensured. To accomplish this, a higher penetration of ... -
Investigating the Interaction between Degradation and Thermal Behaviour in Lithium-Ion Batteries
Spitthoff, Lena (Doctoral theses at NTNU;2023:446, Doctoral thesis, 2023)The overall aim of this thesis is to generate knowledge on the interplay of battery degradation and thermal behaviour. We focused on the temperature dependency of degradation on the one hand and on the effect of degradation ... -
Investigating the Role of Active Loads in the Future Electrical Grid Dominated by Power Electronics
Jelani, Nadeem (Doctoral Theses at NTNU, 1503-8181; 2014:174, Doctoral thesis, 2014)The advancements in power electronics in the past decade have resulted in a wide spread use of power electronically interfaced generation units and loads in both AC and DC distribution systems. Power electronics plays an ... -
Investigation of distortions in microgrids
Kulia, Geir (Master thesis, 2016)This thesis presents a validation study based on data analysis aimed at identifying the cause of atypical behavior observed in a microgrid's data. The data of a stand-alone PV microgrid in Bhutan is analyzed. The analysis ... -
Investigation of mental stress detection with an 8-channel EEG system using KNN, SVM and EEGNet
Galtung, Ivar Tesdal; Marthinsen, Anne Joo Yun (Master thesis, 2023)Det er viktig å påpeke at dette arbeidet er gjort som en fortsettelse av prosjektoppgaven av Marthinsen [1]. Derfor vil det være seksjoner, spesielt i chapter 2, som vil være sterkt inspirert av eller direkte gjenbrukt fra ... -
Investigation of mental stress detection with an 8-channel EEG system using KNN, SVM and EEGNet
Galtung, Ivar Tesdal; Marthinsen, Anne Joo Yun (Master thesis, 2023)Det er viktig å påpeke at dette arbeidet er gjort som en fortsettelse av prosjektoppgaven av Marthinsen [1]. Derfor vil det være seksjoner, spesielt i chapter 2, som vil være sterkt inspirert av eller direkte gjenbrukt fra ... -
Limitations in Impedance Reshaping of Grid Forming Converters for Instability Prevention
Shah, Chirag Ramgopal; Molinas, Marta; Nilsen, Roy; Amin, Mohammad (Chapter, 2023)Under a weak grid scenario, Grid Forming (GFM) converters have superior impedance-based small-signal stability compared to Grid Following (GFL) converters. The underlying assumption in defining a weak grid has traditionally ... -
Low-density EEG Source Reconstruction: Towards an Automated Framework for Minimizing Electrode Count While Retaining High Accuracy
Soler, Andres (Doctoral theses at NTNU;2022:196, Doctoral thesis, 2022)In this thesis, multiple approaches for electroencephalographic (EEG) source reconstruction using low-density electrode counts are introduced. Source reconstruction provides valuable information about the location and ... -
Mental Stress Classification from Phonocardiogram Signals - A wavelet Scattering Approach on Asynchronously Segmented PCG
Sletta, Øystein Stavnes (Master thesis, 2023)Deteksjon av stress fra biosignaler er et fremtidsrettet felt innen maskinlæring, men er fremdeles i tidlig utviklingsfase. Mangelen på offentlige datasett med stressmarkeringer er en flaskehals for videre forskningsprogresjon ... -
Model-Based Design of Marine Hybrid Power Systems - With a case study of DC Grid Architecture and Control
Park, Daeseong (Doctoral theses at NTNU;2023:346, Doctoral thesis, 2023)Marine electrification and hybridization with DC power systems topology are still under development with advanced power electronics, energy storage systems (ESS), and their associated controllers to cope with stricter ... -
Modeling and control of inductive power transfer systems with constant voltage load
Zhou, Jiayu (Doctoral theses at NTNU;2023:107, Doctoral thesis, 2023)In recent decades, wireless power transfer (WPT) systems have been used in more and more fields, such as portable electronic devices, implanted medical devices, power system monitoring devices, underwater vehicles, etc. ... -
Modelling of frequency-coupled power electronics systems: Automated model generation and chirp frequency scanning, applied to single-phase VSCs
Føyen, Sjur (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 ... -
Motor Imagery-based Brain-Computer Interfaces: Exploring Optimization and Transfer Learning Techniques for Multiclass Classification
Kenworthy, Victoria Taklo; Nylænder, Karoline Malene (Master thesis, 2023)Dette arbeidet fokuserer på å håndtere noen utfordinger innen hjerne-datamaskin-grensesnitt (BCI) basert på forestilte bevegelser (MI), kalt MI-BCI, inkludert forbedring av deteksjon og klassifisering av MI, identifisering ... -
Motor Imagery-based Brain-Computer Interfaces: Exploring Optimization and Transfer Learning Techniques for Multiclass Classification
Nylænder, Karoline Malene; Kenworthy, Victoria Taklo (Master thesis, 2023)Dette arbeidet fokuserer på å håndtere noen utfordinger innen hjerne-datamaskin-grensesnitt (BCI) basert på forestilte bevegelser (MI), kalt MI-BCI, inkludert forbedring av deteksjon og klassifisering av MI, identifisering ... -
New switching pattern for AC/AC converters with RB-IGBTs for offshore wind parks
Mogstad, Anne Berit (Master thesis, 2008)Offshore wind power has an increasing interest in the research community and among the politicians. Therefore it is important to find the right solutions to meet the environmental and commercial requirements to give offshore ... -
Off-grid energy system for Wawashang, East Nicaragua: analysis of the energy potential and design of a micro hydropower installation
Boninella, Marco (Master thesis, 2013)The Wawashang Complex on the East Coast of Nicaragua is a typical example of remote rural area that can benefit from off-grid renewable energy solutions. In this Complex, the non-profit organization FADCANIC supports the ...