Session: Hybrid System & Substation

Paper Number: 172650

172650 - Comparative Frequency Domain Hydrodynamic Analysis Study of Hybrid Owc-Floating Offshore Wind Turbine Platform 

Abstract: 

This research work focusses on the vibration mitigation of Floating Offshore Wind Turbine (FOWT) in a new proposed hybrid wind-wave platform. In this study, we have compared the results of frequency domain hydrodynamic analysis using three modelling packages on two FOWT platforms. The platforms under consideration are the standard ITI Energy Barge and ITI Energy barge with four integrated Oscillating Water Columns (OWCs). The OWCs are used for two objectives on one hand harness wave energy along with the wind energy and on the other hand be used as active structural control to mitigate the undesired vibration induced by the wind and wave loads. The modelling approaches considered are WAMIT, ShipMo and Ansys Aqwa. While linear wave theory only necessitates meshing of the wetted surface in the undisplaced position, numerical tools vary in their requirements. Both ShipMo and ANSYS AQWA require meshing of the wetted and freeboard surfaces, whereas Multisurf only requires meshing the wetted surface. The results show similar expected behavior where they peak out at some intermediate frequency and level out at higher frequencies. Also, all three models show a spike at a certain sloshing resonance frequency which is due to the sloshing water inside the capture chambers of the introduced moonpools. The achieved results provide an insight into the platform’s stability and design.

Presenting Author: Fares M'zoughi University of Victoria (UVic)

Presenting Author Biography: Fares received the B.Eng degree in Mechatronics from the University of Carthage (UCar), Carthage, Tunisia in 2013, and received the MSc degree in Automatic Control & Signal Processing from the University of Tunis El Manar (UTM), Tunis, Tunisia in 2014. He also received the Ph.D. degree in Engineering Control, Automation and Robotics from the University of the Basque Country (UPV/EHU), Bilbao, Spain and the Ph.D. degree in Electrical Engineering from UTM in 2018 in a cotutelle framework.

He was a postdoctoral Researcher with Laboratoire des Systemes Electriques (LSE) at UTM, Tunisia, from 2018 to 2019. Then joined the Automatic Control Group (ACG) at UPV/EHU, Bilbao, Spain as a Postdoctoral Researcher from 2019-2024. He recently obtained the prestigious Marie Sklodowska-Curie Actions (MSCA) grant for a Global Postdoctoral Fellowship at the University of Victoria (UVic), British Columbia, Canada.

His current research interests include renewable energy applications, Mechatronics, adaptive control, intelligent control design, and applied control of dynamic systems, applied to wave energy converters and offshore energy systems.

Authors:

Fares M'zoughi University of Victoria (UVic)
Virag Mishra Oregon State University
Curran Crawford University of Victoria
Izaskun Garrido University of the Basque Country
Aitor J. Garrido University of the Basque Country