Structural response and fatigue assessment of a small vertical axis wind turbine under stationary and non-stationary excitation

Andrea Orlando, Luisa Pagnini and Maria Pia Repetto

Renewable Energy, 2021, vol. 170, issue C, 251-266

Abstract: The paper discusses the response and fatigue damage of the supporting tower of a small vertical axis wind turbine subject to stationary and non-stationary excitation due to wind, turbine rotation, emergency stop and start. Using in-field measurements and the Hot Spot Stress Approach, the study analyses a number of aspects that are usually disregarded in design verifications. The results highlight the importance of the detail modeling, the fundamental role played by the non-stationary conditions and the errors committed when using conventional models of the load. The emphasis of this paper is put on two main aspects: the use of full scale data and the detection of isolated events of non-stationary vibrations, the effects of which can be disregarded when using stress time-histories of 10 min - 1 h.

Keywords: Small wind turbines; Structural monitoring; Vertical axis wind turbines; Hot spot stress; Wind induced fatigue; Non-stationary vibrations (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:170:y:2021:i:c:p:251-266

DOI: 10.1016/j.renene.2021.01.123

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