Analysis of tower/blade interaction in the cancellation of the tower fore-aft mode via control

W.E. Leithead, S. Dominguez, C. Spruce

Research output: Contribution to conferencePaper

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Abstract

With the increase in size of wind turbines, there is increasing interest in exploiting the pitch control capability of variable speed turbines to alleviate tower fatigue loads. The most direct method is to modify the blade pitch angle in response to a measurement of tower acceleration. It is shown that the ap mode has a
central role in determining whether this approach is effective since there is a strong interaction between the blade ap-wise mode and the tower fore-aft mode. Several different approaches to the design of the controller for the tower speed feedback loop are investigated. It is concluded that a reduction in the tower loads of up to
18% is possible for multi-megawatt sized wind turbines.
Original languageEnglish
Publication statusPublished - 2004
EventEuropean Wind Energy Conference 2004 - London, United Kingdom
Duration: 22 Nov 2004 → …

Conference

ConferenceEuropean Wind Energy Conference 2004
CountryUnited Kingdom
CityLondon
Period22/11/04 → …

Keywords

  • wind turbines
  • tower fore-aft mode
  • pitch control
  • flap loads
  • wind energy

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    Leithead, W. E., Dominguez, S., & Spruce, C. (2004). Analysis of tower/blade interaction in the cancellation of the tower fore-aft mode via control. Paper presented at European Wind Energy Conference 2004, London, United Kingdom.