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Calculational model for first-mode eigenfrequency of a semi-guy-wired vertical-axis wind turbine tower
Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS).ORCID iD: 0000-0001-9982-5317
Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS).
2019 (English)In: Wind Engineering: The International Journal of Wind Power, ISSN 0309-524X, E-ISSN 2048-402XArticle in journal (Refereed) Epub ahead of print
Abstract [en]

A simple model for accounting for tower mass when estimating the first-mode eigenfrequency of a semi-guy-wired tower has been derived. This extends previous work where an analytical model of the semi-guy-wired tower of a 200-kW vertical-axis wind turbine was developed. The model was primarily used to estimate the eigenfrequencies as a result of adding guy wires to a free-standing tower (thus creating a semi-guy-wired setup). However, a weakness with the model was that the tower mass was accounted for in a rough way that essentially ignored the guy wires, which gave a larger-than-necessary error. In this work, an effective top mass, that takes into account the tower mass and the constraints from the guy wires, is derived to achieve a higher accuracy when estimating the first-mode eigenfrequency. This, together with the earlier models, gives a more complete method to estimate the eigenfrequencies for a semi-guy-wired wind turbine.

Place, publisher, year, edition, pages
London: Sage Publications, 2019.
Keywords [en]
Vertical-axis wind turbine, eigenfrequency, natural frequency, semi-guy-wired
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:hh:diva-40775DOI: 10.1177/0309524X19882433OAI: oai:DiVA.org:hh-40775DiVA, id: diva2:1362953
Available from: 2019-10-22 Created: 2019-10-22 Last updated: 2019-10-23

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Möllerström, ErikOttermo, Fredric

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CiteExportLink to record
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  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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