Active and Passive Fault-Tolerant LPV Control of Wind Turbines

Christoffer Sloth, Thomas Esbensen, Jakob Stoustrup

Research output: Contribution to journalConference article in JournalResearchpeer-review

76 Citations (Scopus)

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 parametervarying 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 faulttolerant control system to be slightly superior to that of the passive fault-tolerant control system.
Original languageEnglish
JournalAmerican Control Conference (ACC)
Volume2010
Pages (from-to)4640-4646
ISSN0743-1619
Publication statusPublished - 2010
EventAmerican Control Conference 2010 - Baltimore, Maryland, United States
Duration: 30 Jun 20102 Jul 2010

Conference

ConferenceAmerican Control Conference 2010
CountryUnited States
CityBaltimore, Maryland
Period30/06/201002/07/2010

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Wind turbines
Controllers
Control systems
Linear matrix inequalities
Failure analysis
Trajectories
Feedback

Cite this

Sloth, Christoffer ; Esbensen, Thomas ; Stoustrup, Jakob. / Active and Passive Fault-Tolerant LPV Control of Wind Turbines. In: American Control Conference (ACC). 2010 ; Vol. 2010. pp. 4640-4646.
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title = "Active and Passive Fault-Tolerant LPV Control of Wind Turbines",
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 parametervarying 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 faulttolerant control system to be slightly superior to that of the passive fault-tolerant control system.",
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Active and Passive Fault-Tolerant LPV Control of Wind Turbines. / Sloth, Christoffer; Esbensen, Thomas; Stoustrup, Jakob.

In: American Control Conference (ACC), Vol. 2010, 2010, p. 4640-4646.

Research output: Contribution to journalConference article in JournalResearchpeer-review

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T1 - Active and Passive Fault-Tolerant LPV Control of Wind Turbines

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AU - Stoustrup, Jakob

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N2 - 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 parametervarying 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 faulttolerant control system to be slightly superior to that of the passive fault-tolerant control system.

AB - 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 parametervarying 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 faulttolerant control system to be slightly superior to that of the passive fault-tolerant control system.

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