Blar i NTNU Open på forfatter "Nøland, Jonas Kristiansen"
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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 ... -
The Energy Transition's Impact on the Accumulated Average Efficiency of Large Hydrogenerators
Karekezi, Yannick Cyiza; Øyvang, Thomas; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2022)The energy transition is aimed to take advantage of the operational flexibility of hydropower to extend the integration of intermittent renewable sources. Consequently, the hydrogenerators will have to operate in regimes ... -
Enhanced Power Capability of Generator Units for Increased Operational Security using NMPC
Øyvang, Thomas; Nøland, Jonas Kristiansen; Sharma, Roshan; Hegglid, Gunne John; Lie, Bernt (Journal article; Peer reviewed, 2019)The ever-increasing penetration of intermittent energy sources introduces new demanding operating regimes for the bulk power generation in the power grid. During a worst-case power system disturbance scenario, the generator ... -
Equivalent Magnetic Network Modeling of Variable-Reluctance Fractional-Slot V-Shaped Vernier Permanent Magnet Machine Based on Numerical Conformal Mapping
Ghods, Mehrage; Faiz, Jawad; Gorginpour, Hamed; Mohammad Amin, Bazrafshan; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2023)The V-shaped permanent magnet synchronous machine (PMSM) has been successfully commercialized in hybrid-and all-electric vehicles fabricated by several famous companies. The advantages of PMSMs are a wide constant torque-speed ... -
Evaluating the Precision of the DC Decay Test Method for Characterizing Wound-Field Synchronous Machines in Power Plants
Maurer, Frédéric Michael; Øyvang, Thomas; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2023)The sudden short-circuit test is the gold standard for determining the equivalent diagram of wound-field synchronous machines (WFSMs). Only a single measurement is needed while the machine is in saturated mode. However, ... -
Evolving Toward a Scalable Hyperloop Technology: Vacuum transport as a clean alternative to short-haul flights
Nøland, Jonas Kristiansen (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 ... -
Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends
Nøland, Jonas Kristiansen; Nuzzo, Stefano; Tessarolo, Alberto; Alves, Erick Fernando (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 ... -
Future Operational Regimes of Bulk Power Generation in The Era of Global Energy Transition: Grid Codes, Challenges and Open Issues
Nøland, Jonas Kristiansen; Leandro, Matteo; Nysveen, Arne; Øyvang, Thomas (Chapter, 2020)This paper explores the effects of the ongoing energy transition on the classical bulk power generation. The rapid increase in renewable penetration changes the role of grid-connected generators significantly. Large machines ... -
Generalized and Reduced Analytical Formulation for Ultra-Fast 3-D Field and Vector Potential Calculation from Arch-Shaped Axially Magnetized Bodies in Electrical Machines
Maurer, Frederic; Kawkabani, Basile; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2020)Arch-shaped axially magnetized bodies tend to appear frequently in electrical machine analysis such as in overhang parts of classical radial-flux machines as well as in main parts of axial-flux machines. The calculation ... -
High-Power Machines and Starter-Generator Topologies for More Electric Aircraft: A Technology Outlook
Nøland, Jonas Kristiansen; Leandro, Matteo; Suul, Jon Are Wold; Molinas Cabrera, Maria Marta (Peer reviewed; Journal article, 2020)More electric aircraft (MEA) architectures consist of several subsystems, which must all comply with the settled safety requirements of aerospace applications. Thus, achieving reliability and fault-tolerance represents the ... -
High-Speed MW-Class Generator with Multi-Lane Slotless Winding for Hybrid-Electric Aircraft
Mikkelsen, Eirik Kvåle; Matveev, Alexey Vyacheslavovich; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2023)This paper presents a comprehensive design and analysis of a high-speed, multi-lane, 2.5MW, 15 000 rpm, 3 kV slotless generator system tailored for hybrid-electric aircraft. The armature of this generator incorporates ... -
Hydrogen Electric Airplanes: A Disruptive Technological Path to Clean Up the Aviation Sector
Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2021)Recently, the COVID-19 pandemic has been a painful reminder of the vulnerability of the aerospace industry. It is currently facing challenges with costs, expensive fuels, and carbon emissions. In recovering the industry, ... -
Laterally Penetrative Onset of Convection in a Horizontal Porous Layer
Tyvand, Peder A.; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2020)The onset of Darcy–Bénard convection in an unlimited horizontal porous layer is studied theoretically. The thermomechanical boundary conditions of Dirichlet or Neumann type at the lower and upper plane are switched from ... -
A Length Scale Approach to the Highest Standing Water Wave
Tyvand, Peder A.; Nøland, Jonas Kristiansen (Journal article; Peer reviewed, 2021)The highest standing surface wave at infinite depth is a classical hydrodynamic problem, illuminated by Taylor’s ex- cellent experiments [Taylor, G. I., Proc. R. Soc. Lond. Ser. A 218, 44 (1953)]. Based on length scale ... -
Loss Modeling of Large Hydrogenerators for Cost Estimation of Reactive Power Services and Identification of Optimal Operation
Karekezi, Yannick Cyiza; Melfald, Emil Ghieh; Øyvang, Thomas; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2022)As a result of the worldwide energy transition, reactive power generation has started to become a more scarce resource in the power grid. Until recently, reactive power has been an auxiliary grid service that classical ... -
Maximum Torque Density Limit for Surface-Cooled SPM Machines
Bocchese, Andrea; Nøland, Jonas Kristiansen; Bianchi, Nicola; Noddeland, Børge; Røkke, Astrid (Chapter, 2020)The aim of this work is to find the maximum torque density limit of a surface cooled SPM machine. In this paper, an analytical and a FEM-based model are developed under some theoretical conditions. Both models consist of ... -
Modellering og simulering av drivsystem for permanentmagnet synkronmaskin
Engen, Per Kristian; Bergesen, Wilhelm; Heidsve, Sivert (Bachelor thesis, 2021)For drifting av elektriske fartøy har permanentmagnet synkronmaskinen blitt et populært valg av motor. Form˚alet med oppgaven er ˚a utvikle en digital modell av permanentmagnet synkronmaskinen og drivsystemet som kontrollerer ... -
Multi-Parametric Condition Monitoring of Medium-Power Generators with Brushless Exciters under Mechanical Faults
Gyftakis, Konstantinos N.; Platero, Carlos A.; Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2023)The interest in reliable condition monitoring of small-to-medium-power generator sets (GenSets) has increased in recent years due to the multiple benefits of prompt and decisive fault detection. This leads to the minimization ... -
Next-Generation Cryo-Electric Hydrogen-Powered Aviation: A Disruptive Superconducting Propulsion System Cooled by Onboard Cryogenic Fuels
Nøland, Jonas Kristiansen; Mellerud, Runar; Hartmann, Christian Magnus (Journal article; Peer reviewed, 2022)The idea of hydrogen (H2)- powered airplanes has recently attracted a revitalized push in the aviation sector to combat carbon dioxide (CO2) emissions. However, to also reduce, or even eliminate, non-CO2 emissions and con- ...