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Fault tolerant control design of floating offshore wind turbines

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Rodellar Benedé, JoséMés informacióMés informacióMés informació
Tutivén Gálvez, ChristianMés informació
Acho Zuppa, LeonardoMés informacióMés informacióMés informació
Vidal Seguí, YolandaMés informacióMés informacióMés informació
Document typeConference report
Defense date2016
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
This work is concerned with active vibration mitigation in wind turbines (WT) but not through the use of specifically tailored devices. Instead, a general control scheme is designed for torque and pitch controllers based on a super-twisting algorithm, which uses additional feedback of the fore-aft and side-to-side acceleration signals at the top of the WT tower to mitigate the vibrational behavior. In general, proposed methods to improve damping through pitch and torque control suffer from increased blade pitch actuator usage. However, in this work the blade pitch angle is smoothed leading to a decrease of the pitch actuator effort, among other benefits evidenced through numerical experiments. The most frequent faults induce vibrations in the corresponding WT subsystems. In fact, vibration monitoring has been recently used for fault diagnosis Thus, by means of vibration mitigation, different faulty conditions can be alleviated leading to a passive fault tolerant control. In this work, coupled non-linear aero-hydro- servo-elastic simulations of a floating offshore wind turbine are carried out for one of the most common pitch actuator faults.
CitationRodellar, J., Tutivén, C., Acho, L., Vidal, Y. Fault tolerant control design of floating offshore wind turbines. A: European Conference on Structural Control. "EACS 2016 Proceedings". Sheffield: 2016. 
URIhttp://hdl.handle.net/2117/103180
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