Blar i NTNU Open på tittel
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Modeling and analysis of grid-synchronizing stability of a Type-IV wind turbine under grid faults
(Peer reviewed; Journal article, 2020)Transient behavior and response of wind turbines have been extensively studied in the context of the low-voltage-ride-through (LVRT) for many years, in which the identified transients are mostly associated with circuit ... -
Modeling and Analysis of Liquid Loading Phenomena and Its Impact on Crossflow in Gas Wells Using ROCX and OLGA
(Master thesis, 2023)Denne oppgaven undersøker samspillet mellom reservoar og brønn under væskeopphopning (liquid loading). Det kan oppstå kryss-strømninger mellom reservoarsoner med ulike egenskaper, og denne oppgaven undersøker om ... -
Modeling and Analysis of Motion Data from Dynamically Positioned Vessels for Sea State Estimation
(Chapter, 2019)Developing a reliable model to identify the sea state is significant for the autonomous ship. This paper introduces a novel deep neural network model (SeaStateNet) to estimate the sea state based on the ship motion data ... -
Modeling and Analysis of Noise
(Master thesis, 2013)Noise is an environmental issue which may have a negative impact on health and wellbeing. Norwegian legislation states recommended noise limits for inhabited and other noise sensitive areas. Areas susceptible to noise ... -
Modeling and analysis of performance and emissions of marine lean-burn natural gas engine propulsion in waves
(Peer reviewed; Journal article, 2020)In many vessels, the prime mover is a diesel engine, while the researchers recommended using natural gas as an attractive option to comply with the latest emission legislations. This study aims to analyze the dynamic ... -
Modeling and analysis of ship traffic by observation and numerical simulation
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:136, Doctoral thesis, 2011)The continuing losses of vessels and the ever increasing volume of cargo carried by ship marks marine traffic as a high risk activity where a single accident has the potential to incur large human, environmental and economic ... -
Modeling and Analysis of SOGI-PLL/FLL-based Synchronization Units: Stability Impacts of Different Frequency-feedback Paths
(Peer reviewed; Journal article, 2020)— Second-order Generalized Integrator (SOGI)-based quadrature-signal-generator (QSG) together with either a phaselocked-loop (PLL) or a frequency-locked-loop (FLL) constitute two types of typical synchronization units ... -
Modeling and Calibration of Electricity Price Dynamics for Derivatives Valuation
(Master thesis, 2013)The objective of this thesis is to model electricity price dynamics and use the results to valuate derivatives. Electricity prices are known to display features such as spikes, seasonality and jumps, leading to large ... -
Modeling and Characterization of Liquid Vapor Equilibrium of N-methyl-1,3-Propanediamine for CO2 Capture - Using the Extended UNIQUAC Framework
(Master thesis, 2011)In this work the loaded MAPA system has been thermodynamically characterized. This was done by measuring the phase- and chemical equilibrium in the laboratory, as vapor - liquid - equilibrium data. A thermodynamical model ... -
Modeling and Characterization of SOI Multigate MOSFETs
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:334, Doctoral thesis, 2011)Multi-gate MOSFETs (MugFETs) with superior gate control are replacing planar CMOS in future technology nodes. Recently Intel announced that their 22nm technology will be based upon 3D Tri-gate MOSFETs. An accurate modeling ... -
Modeling and characterizing acoustic signals from cavity clouds generated by marine seismic air-gun arrays: Implications for marine mammals
(Doctoral theses at NTNU;2018:239, Doctoral thesis, 2018)Marine seismic air-gun arrays generate not only low-frequency (<∼300 Hz) acoustic waves which benefit seismic imaging, but also high-frequencies up to tens of kilohertz. Although such high-frequencies are much weaker than ... -
Modeling and Confidence in a System for Automatic Classification of Birdsong
(Master thesis, 2015)It turns out that using a two-state-HMM model structure with appurtenant GMM-based state distributions improves the system performance compared to the use of just GMMs as model structure for each bird specie. Hence, it is ... -
Modeling and Control for Dynamic Positioned Marine Vessels in Drifting Managed Sea Ice
(Journal article; Peer reviewed, 2014)This paper presents a development framework for dynamic positioning control systems for marine vessels in managed ice. Due to the complexity of the vessel-ice and ice-ice interactions a configurable high fidelity numerical ... -
Modeling and Control for Managed Pressure Drilling from Floaters: Heave Compensation by Automatic Nonlinear Control
(Master thesis, 2011)Managed pressure drilling is a sophisticated pressure control method which is intended to meet increasingly high demands in drilling operations in the oil and gas industry. With this method, the well is pressurized and the ... -
Modeling and Control of a Bifilar Crane Payload
(Journal article; Peer reviewed, 2018)This paper presents a modeling technique and a controller for an underactuated crane payload. The crane payload is modeled as a bifilar pendulum. The payload is attached to a sheave block, such that a cable can freely run ... -
Modeling and control of a calcination furnace
(Master thesis, 2017)Calcined anthracite is the primary material used in Søderberg electrode paste, prebaked carbon electrodes, aluminium cathodes, and a variety of other carbon products used in the metallurgical industries. In electrical ... -
Modeling and Control of a DC-grid Hybrid Power System with Battery and Variable Speed Diesel Generators
(Master thesis, 2016)Hybrid electric power systems (HPS) have successfully been integrated in the road-traffic industry due to enhanced efficiency and environmental benefits. Recently this concept has been implemented in the marine sector. In ... -
Modeling and Control of a Foiling Trimaran Sailboat
(Master thesis, 2021)For tiden er foiler på seilbåter som løfter dem ut av vannet veldig i vinden, og det har vært en økende trend de siste årene. Ved å fly over vannet, øker farten til båten. Dette er på grunn av den synkende hydrodynamiske ... -
Modeling and Control of a Four-wheel Autonomous Agricultural Robot
(Master thesis, 2021)Denne masteroppgaven utvikler et hierarkisk kontrollsystem for en 4-hjul-individuelt-styrt (4WIS) bil, som blir laget av det norske landbruksoppstartsselskapet AutoAgri. Et nytt type kontrollsystem som tillater simultan ... -
Modeling and Control of a Marine Diesel Engine driving a Synchronous machine and a Propeller
(Journal article; Peer reviewed, 2014)In some designs of power systems for marine vessels, large-size or medium-size Diesel engine(s) is(are) used to drive one synchronous machine to generate electricity, and the main propeller, simultaneously, through a gear ...