Blar i NTNU Open på forfatter "Nysveen, Arne"

Viser treff 81-92 av 92

    • Superledere i synkronmaskiner 

      Bjerkan, Tor (Master thesis, 2007)
      Hensikten med denne oppgaven er å skaffe en oversikt over utførte synkronmaskinprosjekter verden over, som har benyttet superledere i felt- eller statorviklinger. Videre er et dimensjoneringseksempel utføret, for å se på ...

    • Tank Losses in a Generator Step-Up Transformer 

      Kroken, John (Master thesis, 2011)
      The background for the project is the 320 MVA generator step-up transformer for Jostedal Power Plant. The transformer experiences excess heating in a limited part of the steel tank and lid from eddy current loss caused by ...

    • 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 ...

    • Testing of Insulation Liquids for Subsea Power Converters - Partial Discharge and Breakdown Testing 

      Borge, Malin Drevdal (Master thesis, 2015)
      To realise the future subsea power systems, pressure compensated, liquid insulated power converters are subject to development. The liquid insulation provides a higher breakdown strength than air-insulated systems and works ...

    • The development of calcGenProg and GenProgApp 

      Aarvoll, Jostein Hovde (Master thesis, 2021)
      This report covers the working principals, and development of the improved version of GenProg first created by Alexander Lundseng and Ivar Vikan in 2010. The work described in this report can be considered a direct sequel ...

    • Time Domain Signature Analysis of Synchronous Generator under Broken Damper Bar Fault 

      Ehya, Hossein; Nysveen, Arne; Nilssen, Robert; Lundin, Urban (Chapter, 2019)
      Fault detection of electrical machines can avoid unplanned outage of the electricity generation at a power plant. Research related to a different type of faults in the synchronous generator, the broken damper bar (BDB) ...

    • Transmission solutions for connecting offshore power plants to the onshore grid 

      Engen, Erlend Riise (Master thesis, 2009)
      The European Union has set a binding target saying 20 per cent of their energy consumption shall come from renewable energy sources within 2020. Around 4 per cent of the total amount is planned to come from offshore ...

    • Undersøkelse av beregningsverktøy for elektriske lavspenningsinstallasjoner 

      Skogsrud, Johan (Master thesis, 2009)
      Av dagens beregningsverktøy for elektrotekniske installasjoner har Febdok den største markedsandelen. Febdok benyttes av elektroentreprenører, industri, rådgivende ingeniører, tavlebyggere og flere andre aktører i ...

    • Use of FEM in design program for hydropower generators 

      Leite, Asgeir (Master thesis, 2022)
      Design av vannkraftgeneratorer er et vanskelig optimaliseringsproblem. Generatorer konstrueres normalt ved hjelp av et beregningsprogram. Designeren gir alle geometriske og fysiske parametere til maskinen, og deretter ...

    • Variable-speed operation of hydropower plants: past, present, and future 

      Valavi, Mostafa; Nysveen, Arne (Journal article; Peer reviewed, 2018)
      In This article, the state of the art in the variable-speed operation of hydropower plants is reviewed, with a focus on pumped-storage hydropower. Relevant literature is reviewed to address the benefits of variable-speed ...

    • Vibrations from Magnetic Forces in Hydropower Generators 

      Pascal, Jules (Master thesis, 2016)
      Electrical machines using a fractional slot winding can be subject to low modes of vibration, which can produce noise and stator deformation. The design of a machine has an influence on the amplitude of these deformations, ...

    • Winding and Testing of Superconducting Coils 

      Eliassen, Jan Christian (Master thesis, 2015)
      Superconducting rotor windings are considered for future large offshore wind turbines for their low weight, volume and their possibility to reduce costs. In a joint European project, INNWIND.EU, a superconducting small ...