Blar i Institutt for elkraftteknikk på tittel
Viser treff 204-223 av 2419
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An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly-Fed Induction Machines
(Peer reviewed; Journal article, 2022)This paper presents the exact transient solution to the unbalanced and balanced faults in the doubly-fed induction machine (DFIM). Stator currents, rotor currents, and stator fluxes have been validated using simulation and ... -
Analytical-Based Iron Loss Assessment in the SPM Slotless Machine Stator Core
(Chapter, 2020)The use of slotless machines has acquired growing interest when features such as low vibrations and noise, along with low losses at high speed, are required. However, a careful assessment of the iron losses in the stator ... -
Analyzing and Testing of New Silicon Carbide Components for Down Hole Oil Applications
(Master thesis, 2014)High temperature power converter becomes possible due to the development of SiC power technology. The inherent properties of wide bandwidth, high breakdown electrical field and high thermal conductivity give commercially ... -
Analyzing optimal sizing and operation of renewable hydrogen systems
(Master thesis, 2021)For å nå netto-null karbonutslipp innen 2050, som avtalt i Paris-avtalen, ser man en markant økning av installert effekt fra fornybar energiproduksjon. Ved bruk av økt fornybar energiproduksjon går utslipp av CO2 ned, men ... -
Analyzing the impact of increased electric vehicle penetration on cost and grid burden with bidirectional charging and solar energy production
(Master thesis, 2022)Den norske regjering har satt et mål om at alle nye privatbiler solgt etter 2025 skal være null-utslipp. Dette vil føre til en stor økning i antallet elbiler og med det en økning i energibehovet til transportsektoren. Denne ... -
Analyzing the Integration of Renewable Energy in Interconnected Power Systems Using a Flow-based Market Model
(Master thesis, 2016)As renewable energy is taking on a more pivotal role in power systems around the world, the implications of this development are all the more significant. The study of these issues requires accurate models with publicly ... -
Ant colony optimization and analysis of time step resolution in transmission expansion computations for wind power integration
(Chapter, 2011)This paper investigates the necessary time step resolution in a transmission expansion planning algorithm based on ant colony optimization. A maximal and efficient wind power integration is the main motivation for the grid ... -
An Anti-Islanding Protection for VSM Inverters in Distributed Generation
(Peer reviewed; Journal article, 2020)Virtual synchronous machine (VSM) technology is an attractive control method for an inverter-based distributed generation (DG) due to having the voltage, and frequency support functionality. Embedding an anti-islanding ... -
Anvendelse av AMS-data for tapsberegninger i fordelingstransformatorer
(Bachelor thesis, 2020)Innføringen av AMS har disponert målinger som gir en mer detaljert oversikt av kraftnettet. Målingene muliggjør nye metoder å beregne tap og tapskostnader. Resultatene kan anvendes til å optimalisere dimensjonering i ... -
Anvendelse av elektriske maskiner for økt kortslutningsytelse og redusert utløsningstid av vern i lavspent fordelingsnett
(Master thesis, 2018)Flere nett i Norge har lav kortslutningsytelse. Dette kan føre til treg utløsning av vern. Oppgaven ser på muligheten til å koble elektriske maskiner til lavspentnettet for å øke kortslutningsstrømmen og redusere utløsningstiden ... -
Anvending av nøyaktige målinger for å detektere individuelle apparater i komplekse bygg.
(Bachelor thesis, 2020)Moderne bygg blir stadig mer kompleks og består av tusenvis av individuelle komponenter. Alt fra komfyrer, lys, kjøleskap, datamaskiner o.l. Til sammen står denne utviklingen for et stadig økende energibehov, som medfører ... -
Apparatus for calorimetric measurements of losses in MgB2 superconductors exposed to alternating currents and external magnetic fields
(Journal article; Peer reviewed, 2013)Inexpensive superconducting wires with low AC losses would open up for a large superconductor market in AC electrical power applications. One candidate for this market is the MgB2 conductor. In the development of an AC ... -
Apparatus for loss measurements under multidirectional and dc-bias flux in electrical steel laminations
(Peer reviewed; Journal article, 2020)Conventional standardized power loss measurements for electric steels are performed at flux densities with a single sinusoidal and unidirectional excitation. However, the flux inside electrical steel laminations can deviate ... -
Application for axial flux motor
(Master thesis, 2023)This thesis aims to explore the key factors that contribute to the performance of an axial flux machine. The axial flux machine offers distinct advantages such as higher power and torque density, as well as the ability to ... -
Application of AC Superconducting Windings in Large PM Synchronous Generators for Wind Power
(Master thesis, 2012)Superconductors are known for carrying very high current density without any loss of energy. This characteristic helps to achieve very high power capacity with compact size of machine. In application of superconductors, ... -
Application of Modular Multilevel Converter for Interfacing Grid-Connected Photovoltaic Conversion Plants
(Master thesis, 2015)This thesis investigates the applicability of the Modular Multilevel Converter (MMC) for interfacing grid connected photovoltaic conversion plants. A detailed three-phase 9-level simulation model is implemented in Simulink. ... -
Application of Modular Multilevel Inverter for Interfacing Grid-Connected Photovoltaic Conversion Plants
(Master thesis, 2016)The main focus of this master thesis is to investigate the application of modular multilevel converter (MMC) based grid-connected photovoltaic (PV) conversion systems, and a MATLAB/Simulink model of a PV system composed ... -
Application of Monte Carlo Simulation to Power System Adequacy Assessment
(Master thesis, 2018)This thesis examines three Monte Carlo Simulation methods that can be used in power system reliability studies. Through application of the methods to both generation- and composite system adequacy assessment, an understanding ... -
Application of Optical Current Transformers in Digital Substations
(Master thesis, 2018)In this master's thesis optical current transformers are studied in order to evaluate whether such sensors are suitable for application in digital transmission substations. The analysis includes a discussion of benefits ... -
Application of Phasor Measurements for Online Monitoring and Adaptive Damping Control of Electromechanical Oscillations
(Doctoral theses at NTNU;2022:230, Doctoral thesis, 2022)Power systems are large and complex systems consisting of thousands of components, like generators, transformers and transmission lines, which function together to ensure that the voltage and frequency are close to the ...