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Avoidance of resona...
Avoidance of resonances in a semi-guy-wired vertical axis wind turbine
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- Möllerström, Erik, 1984- (författare)
- Uppsala universitet,Elektricitetslära,Högskolan i Halmstad, Energiteknik,Energiteknik,Division for Electricity, Department of Engineering Sciences, Uppsala University, PO Box 534, SE - 751 21 Uppsala, SwedenDivision for Electricity, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
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- Ottermo, Fredric, 1975- (författare)
- Högskolan i Halmstad,Energiteknik
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- Hylander, Jonny, 1955- (författare)
- Högskolan i Halmstad,Energiteknik
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- Bernhoff, Hans (författare)
- Uppsala universitet,Elektricitetslära,Division for Electricity, Department of Engineering Sciences, Uppsala University, PO Box 534, SE - 751 21 Uppsala, SwedenDivision for Electricity, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Proceedings of EWEA 2014 - Annual Event (Conference), Barcelona, 10-13 March 2014.
- Relaterad länk:
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http://proceedings.e...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Resonance analysis for a vertical axis wind turbine is performed. The turbine may be described as semi-guy wired, being bolted stiffly to the ground as well as supported by guy wires. The influence of the first mode eigen frequency of the guy wires and how it is affected by wind load is examined. Using beam theory, an analytical model for calculating the first mode eigen frequency of the guy wire for different wind loads is derived. The analytical model is verified with FEM-simulations and then used to assemble a diagram showing how to combine the wire size, inclination angle and pre-tension for an eigen frequency range over the 3P load for nominal rotational speed and for a certain effective spring force acting on the tower. This diagram, here called an EA-T diagram, may be used as a quick tool for comparing wire setups and a similar diagram can be used for other guy wired structures.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- VAWT
- guy wire
- semi-guy-wired
- resonance
- eigen frequency
- natural frequency
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)