Blar i Institutt for elkraftteknikk på forfatter "Nøland, Jonas Kristiansen"
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Adaptive Neural Network-based PSS Designs for Modern Power Systems
Grong, Thomas (Master thesis, 2020)Når andelen av fornybar energi i et kraftsystem øker, endres systemets egenskaper på en merkbar måte. Fornybare energikilder som solcelleanlegg og vindturbiner skaper mer hyppige forstyrrelser, men bidrar ikke til å ... -
Analysis and Optimization of a Passive Magnetic Bearing
Tungesvik, Sindre (Master thesis, 2020)Abstract will be available on 2023-06-15 -
Analytical Iron Loss Evaluation in the Stator Yoke of Slotless Surface-Mounted PM Machines
Leandro, Matteo; Elloumi, Nada; Tessarolo, Alberto; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2022)One of the attractive benefits of slotless machines is low losses at high speeds, which could be emphasized by a careful stator core loss assessment, potentially available already at the pre-design stage. Unfortunately, ... -
An Analytical Model for Detailed Transient Fault Analysis of Doubly-Fed Induction Machines
Maurer, Frederic; Nøland, Jonas Kristiansen (Chapter, 2020)This paper presents an exact analytical solution to the two-phase and three-phase short-circuit events of the doubly-fed induction machine (DFIM). The contribution is intended to strengthen the predictability of DFIMs under ... -
Analytical PM Eddy Currents Loss Evaluations in Inverter-Fed Slotless Machines Induced by SVM Control Using Polar Coordinates Formulations
Leandro, Matteo; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2023)Space vector modulation (SVM) is a widespread method for controlling PM machines. However, the switching harmonics contribute to eddy current losses in the magnet region. In the analytical modeling of slotless PM machines, ... -
An Analytical Prediction Model of Balanced and Unbalanced Faults in Doubly-Fed Induction Machines
Maurer, Frédéric; Nøland, Jonas Kristiansen; Toftevaag, Trond Leiv (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
Leandro, Matteo; Nada, Elloumi; Tessarolo, Alberto; Nøland, Jonas Kristiansen (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 ... -
An Approach for Optimal Pre-Conditioning of the Analytical Field Solution of Slotless PM Machines
Leandro, Matteo; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2021)Analytical modeling of electrical machines has the advantage of remarkable computational efficiency when compared with finite element analysis (FEA). This is especially important for slotless topologies, as they are well ... -
Assessing the Feasibility of Developing a High-Speed SynRM by Using a Compound Analytical/FEA-Assisted Design Algorithm
Carlsen, Tord Traa (Master thesis, 2021)Abstract will be available on 2024-02-01 -
Back-to-Back Based Voltage Control of an Isolated Grid Supplied by a Hydro Turbine Driven Induction Generator
Krakk, Eivind (Master thesis, 2020)Dagens samfunn er heilt avhengig av elektrisitetsforsyning. Samankopla transmisjonsnett er lett tilgjengelege over heile verda. Likevel, i rurale områder utan nokon form for eksisterande nettinfrastruktur, kan eit isolert ... -
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 ... -
Coordinated Multi-objective tuning of PSS and AVR
Hansen, Vard Nes (Master thesis, 2021)Spenningsregulatoren (AVR) i en generator sørger for å holde terminalspenningen konstant ved å regulere feltspenningen som tilføres feltviklingene. Synkrongeneratorer kan utstyres med dempetilsats (PSS) som motvirker ... -
Correlation challenges for North Sea offshore wind power: a Norwegian case study
Hjelmeland, Martin N.; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2023)Offshore wind power projects are currently booming around the North Sea. However, there are inherent correlation challenges between wind farms in this area, which has implications for the optimal composition of locations ... -
Design and analysis of a 2.5 MW Coreless Aero Generator for Hybrid-Electric Aircraft
Mikkelsen, Eirik Kvåle (Master thesis, 2023)Denne avhandlingen presenterer design og analyse av en høyhastighets 2,5 MW spor- løs generator for bruk i hybrid-elektriske fly. De sporløse statorviklingene er basert på Alva Industries FiberPrinting-teknologi og består ... -
Design of a Power-Dense Aviation Motor With a Low-Loss Superconducting Slotted Armature
Mellerud, Runar; Hartmann, Christian Magnus; Klop, Casper Leonard; Austad, Sindre; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2023)This article describes the design and analysis of a 2.5-MW, 5000-rpm electric motor with a slotted armature employing REBCO high-temperature superconductors (HTS). The alternating current and field in the armature induces ... -
A Differential Strand-Slot Inductance Model for Improved Compensation of Circulating Currents in the Core Part of Large AC Machines
Frédéric, Maurer; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2021)The Roebel bar conventional design of large AC machines uses the classical strand-slot inductance model (CSSIM). Suitable alternatives are missing as the CSSIM is favored for its inherent simplicity based on the ideally ... -
Direct Drive PMSM Characteristics for Retrofit in Regional Turboprops Using a Design Space Approach
Broch, Håkon (Master thesis, 2022)Et design-rom som dekker effekt- og turtallsbehovet til en representativ samling av turbo-prop fly ønskes generert for å avdekke tendenser i ytelsen til permanentmaskinmotorer uten bruk av giring. Design-rommet utgjør ... -
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 ... -
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 ... -
Electro-Thermal Homogenization of HTS Stacks and Roebel Cables for Machine Applications
Klop, Casper Leonard; Mellerud, Runar; Hartmann, Christian; Nøland, Jonas Kristiansen (Journal article; Peer reviewed, 2024)This paper presents a homogenized electro-thermal model for high-temperature superconductor (HTS) stacks made of multiple REBCO tapes, which reduces the computational complexity of their thermal analysis. The electromagnetic ...