Blar i NTNU Open på forfatter "Nilssen, Robert"
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2D Finite Element (FE) modeling and simulation of the stator winding of synchronous machines in adjustable degree of detailing
Hole, Håkon (Master thesis, 2007)The General Purpose 2D Electromagnetic Tool, GP2DET, at Voith Siemens Hydro Power Generation GmbH is a tool developed for simulation and calculation of electrical parameters in large hydro power machines. In this tool, the ... -
Additive Manufactured Amorphous Metal in High-Speed Interior Permanent Magnet Motor
Havnsund, Ulrik (Master thesis, 2020) -
Analysis of a Novel Coil Design for Axial Flux Machines
Lomheim, Sigbjørn (Master thesis, 2013)A novel coil design for permanent magnet axial flux machines is presented. An analysis of its performance regarding winding layout, cooling capability, cogging torque, and back-EMF is conducted. Different manufacturing and ... -
Analysis of Dynamic Eccentricity faults in a Permanent Magnet Synchronous Machine using stray flux
Laurhammer, Oscar (Master thesis, 2024)Omtrent all elektrisitet produsert i verden kommer fra generatorer, og motorer står for omtrent 30% av det totalte forbruket på verdensbasis. Å monitorere helsen på disse elektriske maskinene er ekstremt viktig. En ny ... -
Analysis of electromagnetic behavior of Permanent Magnetized (PM) electrical machines in fault modes
Hassan, Muhammad Usman (Master thesis, 2017)Over the years, the use of PM machines has been increasing in the offshore wind industry and marine industry. The industries thrive on efficient function of the PM machines. These machines are prone to electro-mechanical ... -
Analysis of Losses and Radial Vibration in a PM Synchronous Machine with Physical Modularity
Mellerud, Runar (Master thesis, 2021)En ModHVDC-generator er en spesielt lukrativ løsning for havvind ettersom den bidrar til et redusert antall komponenter i systemet og samtidig øker tilgjengelighet. Her bruker man fysisk modularitet, der luftgap deler opp ... -
Analytical Calculation of Yoke Flux Patterns in Fractional-Slot Permanent Magnet Machines
Røkke, Astrid; Nilssen, Robert (Journal article; Peer reviewed, 2017)Machine design problems are often solved under the assumption of no-load when calculating iron flux densities. However, it is particularly important to account for the fluxes from the stator currents, the armature reaction, ... -
Application for axial flux motor
Fossmo, Andreas (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 Scaling Laws for Direct Drive Permanent Magnet Generators in Wind Turbines
Hartviksen, Håvard (Master thesis, 2015)The object of this thesis is to investigate the use of scaling laws for Permanent Magnet Generators (PMGs). The product is a graphical tool named the Scaling Program, which is created in MATLAB GUIDE. The most applicable ... -
Axial flux machines with super high torque density or super high efficiency: Design Optimization of an Axial Flux Permanent Magnet Machine Using Genetic Optimization
Veflingstad, Thomas (Master thesis, 2014)An analytical model of an axial flux permanent magnet machine has been made. The model were based on a 2-D magnetic circuit calculated at average length assuming a constant magnetic and electric loading. The model were ... -
Co-Simulation of an IPMSM Drive Using Comsol and Simulink
Andersson, Kristoffer Stabell (Master thesis, 2021)Endelig elementmetoder (FEM) er standardtilnærmingen for å vurdere ytelse og design til elektriske maskiner. Permanent-magnet-synkron-motorer med innfelte magneter (IPMSM) øker i popularitet innen trekkapplikasjoner, romfart ... -
Comparing the Surface- and Interior Permanent Magnet Machine with Concentrated Windings for High Dynamic Applications
Kløvstad, Lasse (Master thesis, 2017)This paper will compare the surface permanent magnet (SPM) machine to the interior permanent magnet (IPM) machine with fractional slot concentrated winding (FSCW). Key features is to achieve high field weakening with low ... -
Comparison of AC-Superconducting Multi-Phase Symmetric-Winding Topologies for Wind Power Generators with PM Rotors
Tome Robles, Dany Josue; Nilssen, Robert; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2022)In this paper, an AC superconducting multi-phase symmetric-winding machine is designed for a wind power generator to improve its performance and reduce losses, where four handpicked topological designs were explored and ... -
Comparison of iron loss calculation models including rotational loss
Haukvik, Siri Faremo (Master thesis, 2020)Målet med denne oppgaven er å undersøke beregningsmetoder for jerntap i elektriske maskiner, med fokus på å identifisere raske og enkle metoder med akseptabel nøyaktighet til bruk i industriell sammenheng. En grundig ... -
Converting an Induction Motor into a Permanent Magnet Synchronous Motor: - replacing the rotor in a used induction machine with a PM rotor
Christiansen, Petter Føsund (Master thesis, 2011)Abstract In this article the possibility of exchanging the rotor of an IM with a high performance PM rotor to increase the motor s efficiency and PF is investigated. A standard industrial IM is used as a reference motor ... -
Design and Manufacturing of a Twin Harmonic Machine with Counter-rotating Rotors
Bergesen, Samson (Master thesis, 2022)Konseptet med å drive to rotorer som kan rotere i separate retninger i samme stator ved å bruke harmoniske komponenter i et konsentrert viklingsoppsett i en overflatemontert permanentmagnetmotor har blitt undersøkt. ... -
Design and measurement of a passive thrust magnetic bearing for a bearingless motor
Severson, Eric; Røkke, Astrid; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned (IEEE Industrial Electronics Society. Annual Conference. Proceedings;IECON 2013, Journal article; Peer reviewed, 2013)The design and construction of a permanent magnet thrust bearing for a bearingless motor is presented and a measurement technique is proposed to characterize the bearing. Optimal design of a bearingless motor requires the ... -
Design and Modelling of Linear Permanent Magnet Actuator with Gas Springs for Offshore Applications
Ummaneni, Ravindra Babu (Doctoral thesis at NTNU;2016:130, Doctoral thesis, 2016)Although rotary steerable systems have been evolving rapidly and delivering unprecedented rates of drilling penetration, drillers nevertheless seek technologies that further accelerate the drilling process. Currently, ... -
Design and Optimization of a Super-Compact PM-Motor for Aviation Using Genetic Algorithm
Fossum, Sigurd Bøyum (Master thesis, 2020)Abstract will be available on 2023-06-10 -
Design and testing of Flux Switched Permanent Magnet (FSPM) Machines
Rotevatn, Njål (Master thesis, 2009)This thesis offers a short overview of the most important stator mounted permanent magnet machines, with a closer look on the FSPM design. A FSPM machine have been built and tested as a generator, to get a better understanding ...