Stability Margin Analysis for PI Pitch Controllers on Large Wind Turbines

Qusay Hawari, James Fleming, Taeseong Kim, Christopher Ward

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This work addresses blade pitch controllers for variable speed wind turbines for the purpose of maintaining power at rated value during above rated wind speeds. The work proposes a collective proportional integral (PI) pitch controller design that accounts for the effects of low frequency aero-elastic modes to enhance the performance of the basic PI controller used in industry. Validation was performed by testing the proposed controller on a non-linear model for the DTU10MW turbine under turbulent wind conditions. Statistical analysis of fatigue loads at the main shaft bearing were further investigated to verify that the proposed controller does not add excessive loading compared with the basic controller.
Original languageEnglish
Title of host publicationProceedings of 2022 UKACC 13th International Conference on Control (CONTROL)
Number of pages2
Publication date2022
ISBN (Electronic)978-1-6654-5200-7
Publication statusPublished - 2022
Event13th UK Automatic Control Council International Conference - Plymouth, United Kingdom
Duration: 20 Apr 202222 Apr 2022
Conference number: 13


Conference13th UK Automatic Control Council International Conference
Country/TerritoryUnited Kingdom
Internet address


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