Blar i NTNU Open på forfatter "Nilssen, Robert"
-
Design of a Hybrid Winding PM Machine for Electric Aviation
Opdal, Fredrik (Master thesis, 2022)Mens samfundet beveger seg i retning av elektrifisering og fornybar energi, trengs det ny teknologi og nye løsninger for å muliggjøre overgangen til en grønnere luftfartssektor. Dagens luftfart er sterkt avhengige av fossilt ... -
Design of a Lab Setup for testing Stator Windings in Ironless Axial Flux Machines
Husum, Eirik Mathias (Master thesis, 2008)Axial flux machines may give higher power-to weight ratios than conventional radial flux machines. As the axial flux machine can easily be constructed with a multi-rotor configuration, it is well suited for ironless stator ... -
Design of a laboratory setup to investigate stability criteria of series-connected synchronous machines
Picazo Bou, David (Master thesis, 2023)Det er utført en studie på styring av to synkrone maskiner koblet i serie. Vi skal også studere hvordan man kan redusere svingningene i udempede permanentmagnetmaskiner. Denne studien vil muliggjøre videreutvikling av en ... -
Design of a Permanently Magnetized Hypocycloidal Reluctance Machine: Adapting the rolling rotor concept to generator and converter operation
Nilsen, Åsmund Kleiva (Master thesis, 2011)Investigations into the nature of the HRM in general, and a PMHRM-design in particular, were undertaken. Two separate simulation models, based on a magnetic equivalent circuit and FEM-model of the machine were built and ... -
Design of Dual Purpose No-Voltage Combined Windings for Bearingless Motors
Severson, Eric Loren; Nilssen, Robert; Undeland, Tore Marvin; Mohan, Ned (Journal article; Peer reviewed, 2017)A winding design approach is proposed to create a single motor winding, which is able to produce both radial force and torque. This approach can be used to design new bearingless motors, as well as to transform conventional ... -
Design of Large PM-Generators for Wind Power Applications
Lagerström, Anders (Master thesis, 2011)This report describes generator design for wind power applications. It explains a modern design procedure which uses both analytical and numerical analysis. The numerical analysis uses finite element analysis and in this ... -
Design optimization of ironless multi-stage axial-flux permanent magnet generators for offshore wind turbines
Zhang, Zhaoqiang; Nilssen, Robert; Muyeen, S.M.; Nysveen, Arne; Al-Durra, Ahmed (Journal article; Peer reviewed, 2017)Direct-driven ironless-stator machines have been reported to have low requirements on the strength of the supporting structures. This feature is attractive for offshore wind turbines, where lightweight generators are ... -
Design, Optimization and Analysis of a Single Rotor Magnetic Gear Electric Machine
Bjørk, Gunnar Charlie David (Master thesis, 2017)Magnetic gears have recently become serious contenders for mechanical gears in low speed applications that require high torque. A magnetic gear features benefits such as inherent overload protection and low maintenance, ... -
Developing a Numerical Model for Optimization of a Coaxial Magnetic Gear
Bergset, Kristina Ingelin (Master thesis, 2016)Magnetic gears have in recent years attracted a lot of interest as a potential replacement for mechanical gears in applications requiring high torque and low speed. Since the two shafts are not in direct contact undesirable ... -
Developing an Application for Simulating a Parametrized PM Machine by FEM
Haugdal, Hallvar (Master thesis, 2016)A parametrized 2D model of a permanent magnet synchronous machine is developed in the finite elements method software COMSOL Multiphysics, along with a graphical user interface to control it. The GUI provides automatic ... -
Development of high efficiency Axial Flux Motor for Shell Eco-marathon
Buøy, John Ola (Master thesis, 2013)In 2011 Lubna Nasrin designed an optimized in-wheel axial flux motor for the competition Shell Eco-Marathon. A motor was built for the 2012 competition by Fredrik V. Endresen. Testing of this motor showed however that the ... -
Development of Procedures for Analysis of PMSM based on Simplified Permeance Network
Hatefi, Seyed Behzad (Master thesis, 2009)Today, Finite Element Method is the most popular way for modeling and analyzing the behavior of electric machines. However, this method cannot be used when there is a need for fast calculations during the sizing and, ... -
Doubly-Fed Induction Machine for use in Mini-Hydro Power Plants - Technical Assessment
Syed, Rizwan Rafique (Master thesis, 2015)Hydropower is the most popular and fastest growing renewable energy technology among all. Environmental and ecological concerns involved with large water reservoirs limited the usage of potentially available sites. Thus, ... -
Dual Use of Liquid Hydrogen in a Next-Generation PEMFC-Powered Regional Aircraft with Superconducting Propulsion
Hartmann, Christian Magnus; Nøland, Jonas Kristiansen; Nilssen, Robert; Mellerud, Runar (Peer reviewed; Journal article, 2022)In this paper, we present a comprehensive model framework for a disruptive cryo-electric propulsion system intended for a hydrogen-powered regional aircraft. The main innovation lies in the systematic treatment of all the ... -
Dynamic Modeling of a Wind Turbine System
Liseth, Hilde Evensen (Master thesis, 2011)The objective of this paper is to derive a simple dynamic model of a wind turbine system, with focus on mechanical conditions. The investigated system is assumed to be a 10 MW reference wind turbine, with variable speed ... -
Dynamic Modelling of Twin Harmonic Counter-Rotating PMSM for Booster Pump in Pumped Storage Hydropower
Taksdal, Mathias Hagen (Master thesis, 2023)En prototype av en permanentmagnet synkronmotor med utpregede poler og doble rotorer har blitt grundig simulert gjennom endelig elementanalyse i COMSOL. De to rotorene utnytter positiv og negativ sekvens harmoniske komponenter ... -
Dynamical electromechanical analysis of pole-piece rotors in pseudo direct-drive machines
Desmedt, Michiel (Master thesis, 2019)Wind energy has shown to be a great renewable energy source, with a possible penetration of 20% by 2040. In order to increase its competitiveness with fossil fuels, the LCOE should decrease further than it already has. ... -
Electric Generator for Ocean Wave Energy Converter
Gorji Ghalamestani, Setareh (Master thesis, 2008)This paper presents design of a Radial Flux Permanent Magnet (RFPM) ring generator for an ocean Wave Energy Converter (WEC). It has a large diameter 61.4 cm and low speed 37.5 rpm. Three phase one layer concentrated winding ... -
Electric Motor Development for Shell Eco-Marathon: Manufacturing an ironless axial flux permanent magnet Motor with Hallbach array and Development of existing Motor for the Shell Eco-Marathon Competition
Endresen, Fredrik Vihovde (Master thesis, 2012)This thesis describes the process of making a new engine for the car DNV Fuel Fighter 2 that participated in the Shell Eco-Marathon Europe 2012 in Rotterdam. The decision was made to construct a new engine based on an ... -
Electrical Machines and Power Electronics for Starter-Generators in More Electric Aircrafts: A Technology Review
Nøland, Jonas Kristiansen; Leandro, Matteo; Suul, Jon Are Wold; Molinas Cabrera, Maria Marta; Nilssen, Robert (Chapter, 2019)Safety-critical power conversion systems play a major role in the paradigm shift towards more electric aircraft (MEA) architectures. This paper reviews the electrical machines and their power electronic systems that are ...