Controlling a meandering wake: Insights from full-information control

Parul Singh, Peter J Seiler Jr

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In this paper we design and analyze a full-information H controller to in order to reduce the wake meandering behind a wind turbine. The low frequency instability that causes wake meandering can cause unsteady mechanical loads on the downstream turbines resulting in early onset of material fatigue. Controlling the wake meandering in a wind farm can therefore reduce maintenance costs. The control design and analysis in this paper proceeds in two steps. First, a linear reduced order model of the turbine is obtained using snapshots from a higher-order nonlinear 2D actuator-disk model. A full-information H controller is then designed for the reduced order model assuming access to the entire flow field and disturbance input. The control performance is evaluated by simulations on the higher-order nonlinear model. The full-information controller can not be implemented in practice. However, it can provide insight into control design for wind farms such as identifying desirable locations to measure the downstream flow.

Original languageEnglish (US)
Title of host publication2017 American Control Conference, ACC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages697-702
Number of pages6
ISBN (Electronic)9781509059928
DOIs
StatePublished - Jun 29 2017
Event2017 American Control Conference, ACC 2017 - Seattle, United States
Duration: May 24 2017May 26 2017

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619

Other

Other2017 American Control Conference, ACC 2017
CountryUnited States
CitySeattle
Period5/24/175/26/17

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    Singh, P., & Seiler Jr, P. J. (2017). Controlling a meandering wake: Insights from full-information control. In 2017 American Control Conference, ACC 2017 (pp. 697-702). [7963034] (Proceedings of the American Control Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/ACC.2017.7963034