Abstract
The research focus of this project is to design a methodology to reduce fatigue and peak structural loading experienced by support structures used for tidal stream converters. The methodology is based on the dynamic analysis of a towermonopile support structure for offshore wind turbines. A tuned mass damper (TMD) is implemented in the nacelle in fore-aft direction by correcting the discrete equation of motion of a fixed tidal turbine. Parameters such as added mass and viscous damping were thus incorporated in the mass and damping matrix to study the effects of using a TMD on a tidal energy converter. Both frequency and time domain analysis are presented to compare the TMD effect in different conditions. Moreover a sensitivity analysis in soil effect and different tower-monopile shape is presented. The result shows the influence of the TMD for a fixed tidal turbine when the structure suffers an instant impact and under unsteady continuous wave-current coupled forces.
| Original language | English |
|---|---|
| Pages | 1-8 |
| Number of pages | 8 |
| Publication status | Accepted/In press - 24 Aug 2016 |
| Event | 3rd Asian Wave and Tidal Energy Conference - Marina Bay Sands, Singapore, Singapore Duration: 24 Oct 2016 → 28 Oct 2016 Conference number: 3 http://www.awtec.asia/awtec-2016/ https://www.awtec-headoffice.com/awtec-2016 |
Conference
| Conference | 3rd Asian Wave and Tidal Energy Conference |
|---|---|
| Abbreviated title | AWTEC 2016 |
| Country/Territory | Singapore |
| City | Singapore |
| Period | 24/10/16 → 28/10/16 |
| Internet address |
Keywords
- tidal turbine
- monopile support
- tuned mass damper
- load reduction
- dynamics