scholarly journals Dynamic response and power production of a floating integrated wind, wave and tidal energy system

2018 ◽  
Vol 116 ◽  
pp. 412-422 ◽  
Author(s):  
Liang Li ◽  
Yan Gao ◽  
Zhiming Yuan ◽  
Sandy Day ◽  
Zhiqiang Hu
Keyword(s):  
Dynamic Response ◽  
Wind Wave ◽  
Tidal Energy ◽  
Power Production ◽  
Energy System

Effects of Misaligned Wave and Wind Action on the Response of the Combined Concept WindWEC

2018 ◽  
Author(s):  
Madjid Karimirad ◽  
Constantine Michailides
Keyword(s):  
Dynamic Response ◽  
Wind Turbine ◽  
Wave Energy ◽  
Power Production ◽  
Energy System ◽  
Mooring Line ◽  
Offshore Platforms ◽  
Dynamic Simulations ◽  
Line System ◽  
Wind Action

In the present paper, the effects of misaligned wave and wind action on the dynamic response of the WindWEC combined concept are evaluated and presented. WindWEC is a recently proposed combined wind and wave energy system; a hybrid offshore energy system that consists of: (a) a 5MW floating wind turbine supported by a spar-type substructure (e.g. Hywind), a Wave Energy Converter (WEC) that is of heaving buoy type (e.g. Wavestar), (c) a structural arm that connects the spar with the WEC and (d) a common mooring system. Hybrid offshore platforms are combining wave and wind energy systems and are designed in order to gain the possible synergy effects and reduce the cost of generated electrical power while increasing the quality of delivered power to grids. During the lifetime of a combined concept, wave and wind can be misaligned which may affect the dynamic response and as a result the functionality of it. In particular, for asymmetric configurations, the misalignment of the wave and wind may result in unexpected behaviour and significant effects that may reduce the produced power. For the case of the WindWEC concept, the relative motion of the spar platform and WEC buoy results to the produced power. In this paper, the dynamic response and power production of the buoy type WEC and wind turbine are examined for different loading conditions where the wave and wind are misaligned. Integrated/coupled aero-hydro-servo-elastic time-domain dynamic simulations considering multi-body analyses are applied. The motion, structural and tension responses as well as power production are examined. The misalignment of wave and wind results to higher loads that affect the mooring line system and motion responses of the spar. It is found that the produced power of wind turbine is not significantly affected.

Power production of the hybrid Wavestar point absorber mounted around the Hywind spar platform and its dynamic response

2021 ◽  
Vol 13 (3) ◽  
pp. 033308
Author(s):  
Hamid Reza Ghafari ◽  
Atefeh Neisi ◽  
Hassan Ghassemi ◽  
Mehdi Iranmanesh
Keyword(s):  
Dynamic Response ◽  
Power Production ◽  
Spar Platform ◽  
Point Absorber

Prefeasibility Assessment of a Tidal Energy System

2019 ◽  
pp. 115-188
Author(s):  
Vikas Khare ◽  
Cheshta Khare ◽  
Savita Nema ◽  
Prashant Baredar
Keyword(s):  
Tidal Energy ◽  
Energy System

4598211 Tidal energy system

1987 ◽  
Vol 14 (1) ◽  
pp. ii
Author(s):  
Joh Koruthu
Keyword(s):  
Tidal Energy ◽  
Energy System

scholarly journals Optimal Dimensions of a Semisubmersible Floating Platform for a 10 MW Wind Turbine

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3092 ◽  
Author(s):  
Giulio Ferri ◽  
Enzo Marino ◽  
Claudio Borri
Keyword(s):  
Wind Turbine ◽  
Frequency Domain ◽  
Degrees Of Freedom ◽  
Wind Wave ◽  
Radial Distance ◽  
Power Production ◽  
Wave Action ◽  
Response Amplitude ◽  
Simulation Approach ◽  
Floating Platform

In this paper, an optimal semisubmersible platform is sought considering two key geometry variables: the diameter of the outer cylinders and their radial distance from the platform centre. The goal is to identify a platform configuration able to most efficiently contrast the combined wind-wave action, keeping the platform dimensions as small as possible. The amplitude of the Response Amplitude Operator (RAO) peaks and the integral area of the RAOs in a range of excited frequencies for the selected degrees of freedom are chosen as targets to be minimised. Through an efficient frequency domain simulation approach, we show that upscaling techniques proposed in the literature may lead to overdesigned platforms and that smaller and more performing platforms can be identified. In particular, the optimised platform shows a reduction of about 51% in parked and 54% in power production of the heave RAO peak, and a reduction of about 37% in parked and 50% in power production of the pitch RAO.

Sign in / Sign up

Export Citation Format

Share Document