Abstract
This paper investigates the restoring stiffness of the main platform concepts proposed for offshore floating wind turbine (FWT) systems; namely, barge, spar, tension leg platform (TLP). The overall system stiffness is partly due to the hydrostatics, and partly due to mooring. The hydrostatic stiffness matrix is formulated using the linear hydrostatic approach that assumes small platform rotation. A new analytical form of the mooring stiffness matrix for a taut-leg platform is presented and subsequently used to formulate the TLP mooring stiffness. While a numerical approach, is used for the other two platform types. The hydrostatic and mooring stiffness coefficients for the surge, sway, heave, roll, pitch and yaw degrees of the freedom (DOF) are computed for the different types of platforms. For each DOF, the magnitude of stiffness from both hydrostatics and moorings are compared.
| Original language | English |
|---|---|
| Title of host publication | 2014 Oceans - St. John's, OCEANS 2014 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781479949182 |
| DOIs | |
| State | Published - 6 Jan 2015 |
| Externally published | Yes |
Publication series
| Name | 2014 Oceans - St. John's, OCEANS 2014 |
|---|
Bibliographical note
Publisher Copyright:© 2014 IEEE.
Keywords
- floating wind turbines
- hydrostatic stiffness
- mooring stiffness
- mooring system
- offshore platforms
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Ocean Engineering
- Computer Networks and Communications
