An active fault tolerant control approach to an offshore wind turbine model

RENEWABLE ENERGY

卷:75

Article

Shi, Fengming¹  Patton, Ron¹ 

[1] Univ Hull, Sch Engn, Kingston Upon Hull HU6 7RX, N Humberside, England

关键词: Wind turbine control;    Active fault tolerant control;    Fault estimation;    Linear parameter varying system;    Closed-loop robustness;   

DOI  :  10.1016/j.renene.2014.10.061

来源: Elsevier

【 摘 要 】

The paper proposes an observer based active fault tolerant control (AFTC) approach to a non-linear large rotor wind turbine benchmark model. A sensor fault hiding and actuator fault compensation strategy is adopted in the design. The adapted observer based AFTC system retains the well-accepted industrial controller as the baseline controller, while an extended state observer (ESO) is designed to provide estimates of system states and fault signals within a linear parameter varying (LPV) descriptor system context using linear matrix inequality (LMI). In the design, pole-placement is used as a time-domain performance specification while H-infinity, optimization is used to improve the closed-loop system robustness to exogenous disturbances or modelling uncertainty. Simulation results show that the proposed scheme can easily be viewed as an extension of currently used control technology, with the AFTC proving clear added value as a fault tolerant system, to enhance the sustainability of the wind turbine in the offshore environment (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

Free