Browsing Institutt for elkraftteknikk by Title

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    • Wind farm voltage dip measurements 

      Marvik, Jorun Irene; Tande, John Olav Giæver; Uhlen, Kjetil (Journal article; Peer reviewed, 2014)
      This paper is based on continuous measurements of voltages and currents from three wind farms for a period of 1 year, and the focus is on voltage dips. The purpose is to get an overview of the characteristics and rate of ...

    • Wind in the North Sea.: Effects of offshore grid design on power system operation. 

      Bergfjord, Line (Master thesis, 2011)
      In this thesis a method was developed to evaluate and compare various offshore grid topology and capacity choices. A small power system was created for the purpose of the study, including prototypes of offshore grids. To ...

    • Wind Powered Water Injection Systems for Oil and Gas Applications 

      Silva Diaz, Jesus Ernesto (Master thesis, 2016)
      The project is focused on the modelling and control of water injection systems (WIS) in oil and gas (O&G) facilities powered by wind turbines. The use of wind power for WIS has been presented by DNV-GL as an sustainable, ...

    • Wind Turbine in Yawed Operation 

      Loland, Kari Medby (Master thesis, 2011)
      The task of this project was to investigate the near wake, performance characteristics and yaw moment on a model wind turbine. The test turbine is a horizontal axis three bladed machine with a rotor diameter of 0.9 meter. ...

    • Wind turbine wake meandering 

      Lynum, Susanne (Master thesis, 2013)
      In this master thesis the meandering of the wake of a three bladed horizontal axis model wind turbine has been studied. Measurements have been conducted by the use of four hot-wire probes located at multiple nearby points ...

    • 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 ...

    • Wireless Control of Active Gate Drivers for Silicon Carbide power MOSFETs 

      Philipps, Daniel Alexander; Peftitsis, Dimosthenis (Peer reviewed; Journal article, 2023)
      Active Gate Drivers (AGDs) enhance controllability and monitoring of switching devices, especially for fast switching Silicon Carbide (SiC) power Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs). To support ...

    • With a Little Help from Your Friends: Collaboration with Vendors During Smart Grid Incident Response Exercises 

      Langås, Mari; Løfqvist, Sanna; Katt, Basel; Haugan, Thomas Sagvold; Jaatun, Martin Gilje (Chapter, 2021)
      The introduction of Information and Communications Technology (ICT) into conventional power grids has resulted in a digitalized smart grid, enabling a more efficient and robust operation. However, it can also lead to ...

    • Wound Rotor Induction Machine - Laboratory Measurements of Stator Current Harmonics and Harmonic Propagation in the Distribution Grid Causing Power Quality Problem 

      Følling, Tone Madsen (Master thesis, 2017)
      A great deal of parameters effects the power system quality and harmonics is one of them. The origin of this thesis is a quality issue experienced by a customer in Norway, where troublesome flicker in the light equipment ...

    • An XAI approach for COVID-19 detection using transfer learning with X-ray images 

      Sarp, Salih; Catak, Ferhat Özgur; Kuzlu, Murat; Cali, Umit; Kusetogullari, Huseyin; Zhao, Yanxiao; Guler, Ozgur (Peer reviewed; Journal article, 2023)
      The coronavirus disease (COVID-19) has continued to cause severe challenges during this unprecedented time, affecting every part of daily life in terms of health, economics, and social development. There is an increasing ...

    • ZEN Case Study. End User Flexibility Potential in the Service Sector 

      Lien, Synne Krekling; Ahang, M.; Lindberg, Karen Byskov; Fjellheim, Øystein (ZEN Report;, Research report, 2020)
      The electricity grid is designed to handle peaks in electricity consumption and is usually dimensioned to handle peak loads at the coldest hours of the year. Over the years to come, investment plans in the Norwegian ...

    • Zero Emission Neighbourhoods in the European Energy System 

      Backe, Stian; Pinel, Dimitri; Askeland, Magnus; Lindberg, Karen Byskov; Korpås, Magnus; Tomasgard, Asgeir (ZEN Report;, Research report, 2021)
      Utviklingen av energisystemet drives av politiske ambisjoner for å dempe klimaendringene. Disse ambisjonene impliserer at energirelaterte klimagassutslipp må reduseres dramatisk i løpet av de neste tiårene. I tillegg til ...

    • Zero energy at the neighbourhood scale: Regulatory challenges regarding billing practices in Norway 

      Askeland, Magnus; Backe, Stian; Lindberg, Karen Byskov (Journal article; Peer reviewed, 2019)
      Buildings are becoming an increasingly active part of the power system due to the ongoing deployment of decentralized energy resources. To reap the added value that may be realized by zero emission neighbourhoods, it is ...

    • Økt forsyningssikkerhet i Sør-Odal kommune 

      Løland, Joakim; Lilleli, Leander; Samset, Martin (Bachelor thesis, 2021)