Browsing SINTEF Open by Author "Nysveen, Arne"

Now showing items 1-5 of 5

    • Apparatus for loss measurements under multidirectional and dc-bias flux in electrical steel laminations 

      Wang, Wei; Nysveen, Arne; Magnusson, Niklas (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 ...

    • Common and differential mode of dc-bias in three-phase power transformers 

      Wang, Wei; Nysveen, Arne; Magnusson, Niklas (Peer reviewed; Journal article, 2022)
      Dc magnetization due to the geomagnetically induced currents (GICs) and HVDC (High Voltage Direct Current) systems may cause core saturation and result in serious destruction in the transformer performance as well as the ...

    • Fabrication of a scaled MgB2 racetrack demonstrator pole for a 10 MW direct drive wind turbine generator 

      Magnusson, Niklas; Eliassen, J. C.; Abrahamsen, Asger B; Hellesø, Svein Magne; Runde, Magne; Nysveen, Arne; Moslått, Lars-Erik; Bjerkli, Jarle; King, Patrick (Journal article; Peer reviewed, 2018)
      Field windings made of MgB2 wires or tapes are considered for their potential to reduce volume, weight and cost of large offshore wind turbine generators. To gain experience of how to use this relatively new material in ...

    • HydroStator : hovedfunn og resultater i KPN-prosjektet HydroStator 

      Berg, Gunnar; Eberg, Espen; Aakre, Torstein Grav; Ildstad, Erling; Kantar, Emre; Nysveen, Arne (SINTEF Rapport;, Research report, 2022)
      Modeller som beskriver temperatur- og frekvensavhengighet til elektriske delutladninger er utviklet og viser at tilstandskontroll med den mer praktiske VLF-metoden som benytter 0,1 Hz høyspenning er representativ for 50 ...

    • Testing of an MgB2 coil for a wind turbine generator pole 

      Magnusson, Niklas; Hellesø, Svein Magne; Mikkonen, R.; Abrahamsen, A.B.; Runde, Magne; Berg, Gunnar; Nysveen, Arne (Peer reviewed; Journal article, 2021)
      We report on the testing of a 1 m long and 0.5 m wide racetrack coil wound from 4.5 km of MgB2 tape-shaped superconductors with a copper strip soldered to the nickel matrix. The cross-section of the coil corresponds to ...