Print Email Facebook Twitter Vibration-based Identification of Hydrodynamic Loads and System Parameters for Offshore Wind Turbine Support Structures Title Vibration-based Identification of Hydrodynamic Loads and System Parameters for Offshore Wind Turbine Support Structures Author Fallais, D.J.M. (TU Delft Offshore Engineering) Voormeeren, S.N. (Siemens Wind Power) Lourens, E. (TU Delft Offshore Engineering) Date 2016 Abstract For reliable structural health monitoring and possible lifetime extension of offshore wind turbine support structures, accurate predictions of the response of these structures at all critical locations are required. Response predictions in offshore wind applications are, however, affected by large uncertainties on environmental (wind/wave/soil) as well as system parameters (eigenfrequencies/damping). As a first step towards robust health monitoring in the presence of these uncertainties, a methodology for simultaneous estimation of a response equivalent hydrodynamic loading and a system parameter from measured vibration signals is proposed. Use is made of a recently proposed coupled input-state-parameter estimation technique based on the Extended Kalman filter. The identification process is driven by a limited set of artificially generated vibration response data in combination with an approximate reduced-order model of the support structure. The results show that the proposed method is capable of tracking both the response equivalent hydrodynamic loading and a parameter that is related to the stiffness of the substructure. Subject Coupled input-state-parameter estimationhydrodynamic load identificationoffshore wind turbinereduced-order modelsupport structure monitoring To reference this document use: http://resolver.tudelft.nl/uuid:6730fbf7-73c9-479c-8b3d-8cc3e67c2278 DOI https://doi.org/10.1016/j.egypro.2016.09.222 ISSN 1876-6102 Source Energy Procedia, 94, 191-198 Event 13th Deep Sea Offshore Wind R&D Conference, 2016-01-20 → 2016-01-22, Trondheim, Norway Part of collection Institutional Repository Document type journal article Rights © 2016 D.J.M. Fallais, S.N. Voormeeren, E. Lourens Files PDF 1_s2.0_S1876610216309055_main.pdf 1.9 MB Close viewer /islandora/object/uuid:6730fbf7-73c9-479c-8b3d-8cc3e67c2278/datastream/OBJ/view