Active and passive fault-tolerant LPV control of wind Turbines

Christoffer Sloth*, Thomas Esbensen, Jakob Stoustrup

*Corresponding author for this work

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

Abstract

This paper addresses the design and comparison of active and passive fault-tolerant linear parameter-varying (LPV) controllers for wind turbines. The considered wind turbine plant model is characterized by parameter variations along the nominal operating trajectory and includes a model of an incipient fault in the pitch system. We propose the design of an active fault-tolerant controller (AFTC) based on an existing LPV controller design method and extend this method to apply for the design of a passive fault-tolerant controller (PFTC). Both controllers are based on output feedback and are scheduled on the varying parameter to manage the parameter-varying nature of the model. The PFTC only relies on measured system variables and an estimated wind speed, while the AFTC also relies on information from a fault diagnosis system. Consequently, the optimization problem involved in designing the PFTC is more difficult to solve, as it involves solving bilinear matrix inequalities (BMIs) instead of linear matrix inequalities (LMIs). Simulation results show the performance of the active fault-tolerant control system to be slightly superior to that of the passive fault-tolerant control system.

Original languageEnglish
Title of host publicationProceedings of the 2010 American Control Conference, ACC 2010
Number of pages7
Publication date2010
Pages4640-4646
Article number5531061
ISBN (Print)9781424474264
Publication statusPublished - 2010
Event2010 American Control Conference, ACC 2010 - Baltimore, MD, United States
Duration: 30. Jun 20102. Jul 2010

Conference

Conference2010 American Control Conference, ACC 2010
Country/TerritoryUnited States
CityBaltimore, MD
Period30/06/201002/07/2010
SponsorAIAA, AIChE, National Institute of Advanced Industrial Science and Technology, ASCE, IEEE

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