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Frequency Optimisation With Respect to Weight and Electric Efficiency for Direct Drive Underwater Power Generaton
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of Engineering Sciences.
In: IEEE Journal of Oceanic EngineeringArticle in journal (Refereed) Accepted
URN: urn:nbn:se:uu:diva-93573OAI: oai:DiVA.org:uu-93573DiVA: diva2:167096
Available from: 2005-10-19 Created: 2005-10-19Bibliographically approved
In thesis
1. Direct Drive Generator for Renewable Power Conversion from Water Currents
Open this publication in new window or tab >>Direct Drive Generator for Renewable Power Conversion from Water Currents
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis permanent magnet direct drive generator for power conversion from water currents is studied. Water currents as a power source involves a number of constrains as well as possibilities, especially when direct drive and permanent magnets are considered. The high power fluxes and low current velocities of a water current, in combination with its natural variations, will affect the way the generator is operated and, flowingly, the appearance of the generator. The work in this thesis can, thus, be categorized into two general topics, generator technology and optimization. Under the first topic, fundamental generator technology is used to increase the efficiency of a water current generator. Under the latter topic, water current generators are optimized to a specific environment. The conclusion drawn from this work is that it is possible to design very low speed direct drive generators with good electromagnetic properties and wide efficiency peak.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2005. 44 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 100
Engineering physics, Teknisk fysik
National Category
Other Engineering and Technologies
urn:nbn:se:uu:diva-6010 (URN)91-554-6362-2 (ISBN)
Public defence
2005-11-04, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:00
Available from: 2005-10-19 Created: 2005-10-19 Last updated: 2013-07-31Bibliographically approved

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