Decoupling Adaptive Sliding Mode Observer Design for Wind Turbines Subject to Simultaneous Faults in Sensors and Actuators

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Decoupling Adaptive Sliding Mode Observer Design for Wind Turbines Subject to Simultaneous Faults in Sensors and Actuators

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Habibi Hamed / Howard Ian / Simani Silvio / Fekih Afef

This paper proposes an adaptive sliding mode observer (ASMO)-based approach for wind turbines subject to simultaneous faults in sensors and actuators. The proposed approach enables the simultaneous detection of actuator and sensor faults without the need for any redundant hardware components. Additionally, wind speed variations are considered as unknown disturbances, thus eliminating the need for accurate measurement or estimation. The proposed ASMO enables the accurate estimation and reconstruction of the descriptor states and disturbances. The proposed design implements the principle of separation to enable the use of the nominal controller during faulty conditions. Fault tolerance is achieved by implementing a signal correction scheme to recover the nominal behavior. The performance of the proposed approach is validated using a 4.8 MW wind turbine benchmark model subject to various faults. Monte-Carlo analysis is also carried out to further evaluate the reliability and robustness of the proposed approach in the presence of measurement errors. Simplicity, ease of implementation and the decoupling property are among the positive features of the proposed approach.

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Title :

Decoupling Adaptive Sliding Mode Observer Design for Wind Turbines Subject to Simultaneous Faults in Sensors and Actuators

Contributors:

Habibi Hamed (author) / Howard Ian (author) / Simani Silvio (author) / Fekih Afef (author) / Habibi, Hamed / Howard, Ian / Simani, Silvio / Fekih, Afef

Publication date :

2021-01-01

DOI :

https://doi.org/10.1109/JAS.2021.1003931

Type of media :

Article (Journal)

Type of material :

Electronic Resource

Language :

English

Keywords :

Fault tolerant control , horizontal axis wind turbines , Monte-Carlo analysis , principle of separation , simultaneous faults , sliding mode observer