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On the Stator Slot Geometry of a Cable Wound Generator for Hydrokinetic Energy Conversion
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Division of Electricity)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Division of Electricity)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Division of Electricity)
2015 (English)In: Scientific World Journal, ISSN 1537-744X, E-ISSN 1537-744X, 812149Article in journal (Refereed) Published
Abstract [en]

In this paper, the stator slot geometry of a cable wound permanent magnet synchronous generator for hydro-kinetic energy conversion is evaluated. When designing generators, practical experience is of great importance to result in a realizable design. Therefore, practical experience from winding two cable wound generators is used to propose optimized dimensions of different parts in the stator slot geometry. A thorough investigation is performed through simulations of how small geometrical changes alter the generator performance. Simulations are performed by using the finite element method (FEM) to solve coupled field and circuit equations. The parameter study shows that small changes in the geometry can have large affect on the performance and the generator dimensions. Furthermore, it is concluded that the load angle is especially sensitive to small geometrical changes. A new generator design is proposed which shows improved efficiency, reduced weight and a possibility to decrease the expensive permanent magnet material by almost one fifth.

Place, publisher, year, edition, pages
2015. 812149
Keyword [en]
permanent magnet, synchronous generator, tidal energy, hydro-kinetic energy conversion, cable wound
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Science of Electricity
Identifiers
URN: urn:nbn:se:uu:diva-195501DOI: 10.1155/2015/812149OAI: oai:DiVA.org:uu-195501DiVA: diva2:607789
Available from: 2013-02-25 Created: 2013-02-25 Last updated: 2017-12-06Bibliographically approved

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Grabbe, MårtenEriksson, SandraLeijon, Mats
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