Browsing USN Open Archive by Author "Hjelmervik, Karina Bakkeløkken"
Now showing items 1-5 of 5
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Comparision of Thyristor-Controlled Rectification Topologies for a Six-Phase Rotating Brushless Permanent Magnet Exciter
Nøland, Jonas Kristiansen; Hjelmervik, Karina Bakkeløkken; Lundin, Urban (Journal article; Peer reviewed, 2016)The thyristor bridge rectifier has proven to be a reliable solution regarding control of excitation equipment for synchronous generators. However, in rotating brushless exciters the diode rectifier is the dominant topology ... -
Heat generation in underwater transducers
Wild, Marcus Sebastian (Doctoral dissertations at the University of South-Eastern Norway;38, Doctoral thesis, 2019)Acoustic transducers are used for a variety of applications, ranging from medical to maritime uses. In the maritime sector, underwater transducers can be used for appli- cations such as seabed mapping, fishing and ... -
Measuring Container Port Complementarity and Substitutability with Automatic Identification System (AIS) Data – Studying the Inter-port Relationships in the Oslo Fjord Multi-port Gateway Region
Schøyen, Halvor; Hjelmervik, Karina Bakkeløkken; Wang, Hao; Osen, Ottar (Journal article; Peer reviewed, 2017)This paper considers the degree of competition among small and medium-sized container ports located in a multi-port gateway region. The level of port competition is evaluated by means of an analysis of the revealed preferences ... -
Organizing data from industrial internet of things for maritime operations
Osen, Ottar; Wang, Hao; Hjelmervik, Karina Bakkeløkken; Schøyen, Halvor (Chapter, 2017)The enormous amount of data collected from different sources in an Industrial Internet of Things (IIoT) will have to be processed, analyzed, and visualized in a timely manner. In this paper, we present a strategy for ... -
Simulert tidevann i Oslofjorden. Tre forskjellige utforminger av havneområdet i Moss
Hjelmervik, Karina Bakkeløkken; Staalstrøm, Andre; Nordby, Svend Erik (Research report, 2014)Tidevannsstrømmen er modellert i hele Oslofjorden helt fra Oslo Havn og ut til Helgeroa og svenskegrensa, med høy horisontal oppløsning. Havmodellen FVCOM (Finite-Volume Community Ocean Model), som deler fjorden opp i ...