Browsing Institutt for elkraftteknikk by Title
Now showing items 838-857 of 2415
-
Evaluation of simulation tools for expansion planning
(Master thesis, 2008)This master thesis is performed at the Department of Electric Power Engineering at the Norwegian University of Science and Technology in Trondheim in the spring 2008. The thesis is done in collaboration with Statkraft ... -
Evaluation of Switching Characteristics, Switching Losses and Snubber Design for a Full SiC Half-Bridge Power Module
(Master thesis, 2016)In this thesis, the performance of the full Silicon Carbide (SiC) half-bridge power module BSM120D12P2C005 from Rohm Semiconductor is investigated. A laboratory circuit enabling double-pulse tests of the half-bridge module ... -
Evaluation of the Fluid Model Approach for the Sizing of Energy Storage in Wave-Wind Energy Systems
(Journal article; Peer reviewed, 2016)The application of energy storage in offshore renewable generation systems allows managing the intrinsic uncertainty of the resources and improving the utilization factor of the electrical network. Optimal storage design ... -
Evaluation of Virtual Synchronous Machines With Dynamic or Quasi-Stationary Machine Models
(Peer reviewed; Journal article, 2016)This paper presents a comparison of the small-signal stability properties for Virtual Synchronous Machines (VSMs) with dynamic and quasi-stationary representation of the internal Synchronous Machine (SM) model. It is shown ... -
Evaluation of wave-frequency motions extraction from dynamic positioning measurements using the empirical mode decomposition
(Chapter, 2019)For dynamic positioning operations, high-frequency wave induced motions cause excessive control action, and consequently additional power consumption and wear of actuators in the propulsion system. Thus, such operations ... -
Evaluation, Modeling and Control of Modular Multilevel Converter for Photovoltaic Applications
(Doctoral theses at NTNU;2019:193, Doctoral thesis, 2019) -
Evaluering av modulert kavitasjon i vannkraftturbiner
(Master thesis, 2013)Det har lenge vært ønskelig å bygge en kavitasjonsrigg ved Vannkraftlaben for å forske på modulert kavitasjon på vingeprofiler. Formålet med oppgaven er å prosjektere en slik rigg, samt beskrive nødvendig instrumentering ... -
Evaluering av pumpene i Vannkraftlaboratoriet
(Master thesis, 2008)Vannkraftlaboratoriet har i den siste tiden opplevd stor pågang fra eksterne firmaer som ønsker å teste modeller av turbiner og andre vannkraftmaskiner. Det er derfor ønskelig å kartlegge kapasiteten til pumpene i ... -
Event Detection and its Signal Characterization in PMU Data Stream
(Journal article; Peer reviewed, 2017)The potential application of signal processing techniques is not only to detect the event but also to characterize them according to physical disturbance. In this paper, event detection and its characterization algorithm ... -
Event signal characterization for disturbance interpretation in power grid
(Chapter, 2018)This paper presents the signal processing approach to detect and characterize the physical events that occur in power system using PMUs signals. A small window is applied so that the extracted spectral features belong to ... -
Evolving Toward a Scalable Hyperloop Technology: Vacuum transport as a clean alternative to short-haul flights
(Peer reviewed; Journal article, 2021)The future transformation of transportation is set to fundamentally shape our modern civilization in reducing the global energy consumption from travel and the time needed to move. In the future climate vision of the ... -
Examination of Longitudinal AC Breakdown Strength of Dielectric Surfaces as a function of Elastic Modulus
(Journal article; Peer reviewed, 2017)This paper examines the influence of the elastic modulus of the polymer insulation on the tangential AC breakdown strength (BDS) of polymer interfaces theoretically and experimentally. In the experiments, four different ... -
Exchange Domains for Cross-border Activation of Balancing Bids - Preventing Internal Congestion in an Integrated European Balancing Activation Optimization
(Master thesis, 2018)In the near future Europe's power markets and electric power system operation will undergo significant changes. A pan-European central balancing platform is under a development that is going to optimize the activation and ... -
Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends
(Journal article; Peer reviewed, 2019)Wound-field synchronous machines (WFSMs) are included in the majority of large power generating units and special high-power motor drives, due to their high efficiency, flexible field excitation and intrinsic flux weakening ... -
Expansion of Offshore HVDC Grids. An overview of contributions, status, challenges, and perspectives.
(Chapter, 2017)The goal of this paper is to review, systematize and critically discuss the approaches that have been proposed so far for grid transmission expansion in HVDC systems. In particular, the paper will focus on the special ... -
An expansion planning method for extending distributed energy system lifespan with energy storage systems
(Peer reviewed; Journal article, 2021)The recent advances in the modern power grids, such as growing energy demand and penetration of higher amounts of distributed energy generators like renewable energy resources, caused additional grid integration challenges ... -
An Expeditious Algorithm for Identification and Classification of Rotor Faults in Salient Pole Synchronous Generators
(Peer reviewed; Journal article, 2023)Providing secure electricity depends on the reliable operation of the synchronous generators in power plants. Interturn short-circuit (ITSC) and dynamic eccentricity (DE) faults are among the most prevalent fault types in ... -
Experimental and numerical investigation of oil-water separation
(Master thesis, 2014)Separation of oil-water mixtures is essential to prepare the productsprior to transportation. This is, among others things, due to salesspecifications, minimisation of corrosion, and reduction of transporta-tion costs. The ... -
Experimental Determination of Losses in MgB2 Superconductors for Wind Turbine Applications
(Master thesis, 2017)Superconducting generator field windings are suggested for the next generation of wind turbines. The foreseen wind turbines with power ratings greater than 10 MW give raise to technical challenges. Superconducting field ... -
Experimental evaluation of SiC-based medium voltage Series Resonant Dual-Active-Bridge three-level DC/DC converters for EV charging
(Chapter, 2023)This paper compares two topologies of SeriesResonant Dual-Active-Bridge (SRDAB) converters with threelevel input applied for EV charging from medium voltage (MV) bipolar DC-link. To convert such a voltage with the utilization ...